From 5b0fe9552336338acb52756daf65dd7a4eeca73f Mon Sep 17 00:00:00 2001
From: Herbert Xu <herbert@gondor.apana.org.au>
Date: Tue, 10 Sep 2019 11:42:05 +1000
Subject: crypto: algif_skcipher - Use chunksize instead of blocksize

When algif_skcipher does a partial operation it always process data
that is a multiple of blocksize.  However, for algorithms such as
CTR this is wrong because even though it can process any number of
bytes overall, the partial block must come at the very end and not
in the middle.

This is exactly what chunksize is meant to describe so this patch
changes blocksize to chunksize.

Fixes: 8ff590903d5f ("crypto: algif_skcipher - User-space...")
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---
 include/crypto/internal/skcipher.h | 30 ------------------------------
 include/crypto/skcipher.h          | 30 ++++++++++++++++++++++++++++++
 2 files changed, 30 insertions(+), 30 deletions(-)

(limited to 'include')

diff --git a/include/crypto/internal/skcipher.h b/include/crypto/internal/skcipher.h
index 734b6f7081b8..3175dfeaed2c 100644
--- a/include/crypto/internal/skcipher.h
+++ b/include/crypto/internal/skcipher.h
@@ -205,19 +205,6 @@ static inline unsigned int crypto_skcipher_alg_max_keysize(
 	return alg->max_keysize;
 }
 
-static inline unsigned int crypto_skcipher_alg_chunksize(
-	struct skcipher_alg *alg)
-{
-	if ((alg->base.cra_flags & CRYPTO_ALG_TYPE_MASK) ==
-	    CRYPTO_ALG_TYPE_BLKCIPHER)
-		return alg->base.cra_blocksize;
-
-	if (alg->base.cra_ablkcipher.encrypt)
-		return alg->base.cra_blocksize;
-
-	return alg->chunksize;
-}
-
 static inline unsigned int crypto_skcipher_alg_walksize(
 	struct skcipher_alg *alg)
 {
@@ -231,23 +218,6 @@ static inline unsigned int crypto_skcipher_alg_walksize(
 	return alg->walksize;
 }
 
-/**
- * crypto_skcipher_chunksize() - obtain chunk size
- * @tfm: cipher handle
- *
- * The block size is set to one for ciphers such as CTR.  However,
- * you still need to provide incremental updates in multiples of
- * the underlying block size as the IV does not have sub-block
- * granularity.  This is known in this API as the chunk size.
- *
- * Return: chunk size in bytes
- */
-static inline unsigned int crypto_skcipher_chunksize(
-	struct crypto_skcipher *tfm)
-{
-	return crypto_skcipher_alg_chunksize(crypto_skcipher_alg(tfm));
-}
-
 /**
  * crypto_skcipher_walksize() - obtain walk size
  * @tfm: cipher handle
diff --git a/include/crypto/skcipher.h b/include/crypto/skcipher.h
index 37c164234d97..aada87916918 100644
--- a/include/crypto/skcipher.h
+++ b/include/crypto/skcipher.h
@@ -304,6 +304,36 @@ static inline unsigned int crypto_skcipher_blocksize(
 	return crypto_tfm_alg_blocksize(crypto_skcipher_tfm(tfm));
 }
 
+static inline unsigned int crypto_skcipher_alg_chunksize(
+	struct skcipher_alg *alg)
+{
+	if ((alg->base.cra_flags & CRYPTO_ALG_TYPE_MASK) ==
+	    CRYPTO_ALG_TYPE_BLKCIPHER)
+		return alg->base.cra_blocksize;
+
+	if (alg->base.cra_ablkcipher.encrypt)
+		return alg->base.cra_blocksize;
+
+	return alg->chunksize;
+}
+
+/**
+ * crypto_skcipher_chunksize() - obtain chunk size
+ * @tfm: cipher handle
+ *
+ * The block size is set to one for ciphers such as CTR.  However,
+ * you still need to provide incremental updates in multiples of
+ * the underlying block size as the IV does not have sub-block
+ * granularity.  This is known in this API as the chunk size.
+ *
+ * Return: chunk size in bytes
+ */
+static inline unsigned int crypto_skcipher_chunksize(
+	struct crypto_skcipher *tfm)
+{
+	return crypto_skcipher_alg_chunksize(crypto_skcipher_alg(tfm));
+}
+
 static inline unsigned int crypto_sync_skcipher_blocksize(
 	struct crypto_sync_skcipher *tfm)
 {
-- 
cgit v1.2.3


From 977da0738f3ba3569b883ed6209c300bfcb695d4 Mon Sep 17 00:00:00 2001
From: Arnd Bergmann <arnd@arndb.de>
Date: Mon, 30 Sep 2019 14:14:35 +0200
Subject: crypto: inside-secure - Remove #ifdef checks

When both PCI and OF are disabled, no drivers are registered, and
we get some unused-function warnings:

drivers/crypto/inside-secure/safexcel.c:1221:13: error: unused function 'safexcel_unregister_algorithms' [-Werror,-Wunused-function]
static void safexcel_unregister_algorithms(struct safexcel_crypto_priv *priv)
drivers/crypto/inside-secure/safexcel.c:1307:12: error: unused function 'safexcel_probe_generic' [-Werror,-Wunused-function]
static int safexcel_probe_generic(void *pdev,
drivers/crypto/inside-secure/safexcel.c:1531:13: error: unused function 'safexcel_hw_reset_rings' [-Werror,-Wunused-function]
static void safexcel_hw_reset_rings(struct safexcel_crypto_priv *priv)

It's better to make the compiler see what is going on and remove
such ifdef checks completely. In case of PCI, this is trivial since
pci_register_driver() is defined to an empty function that makes the
compiler subsequently drop all unused code silently.

The global pcireg_rc/ofreg_rc variables are not actually needed here
since the driver registration does not fail in ways that would make
it helpful.

For CONFIG_OF, an IS_ENABLED() check is still required, since platform
drivers can exist both with and without it.

A little change to linux/pci.h is needed to ensure that
pcim_enable_device() is visible to the driver. Moving the declaration
outside of ifdef would be sufficient here, but for consistency with the
rest of the file, adding an inline helper is probably best.

Fixes: 212ef6f29e5b ("crypto: inside-secure - Fix unused variable warning when CONFIG_PCI=n")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>	# pci.h
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---
 include/linux/pci.h | 1 +
 1 file changed, 1 insertion(+)

(limited to 'include')

diff --git a/include/linux/pci.h b/include/linux/pci.h
index f9088c89a534..1a6cf19eac2d 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -1686,6 +1686,7 @@ static inline struct pci_dev *pci_get_class(unsigned int class,
 static inline void pci_set_master(struct pci_dev *dev) { }
 static inline int pci_enable_device(struct pci_dev *dev) { return -EIO; }
 static inline void pci_disable_device(struct pci_dev *dev) { }
+static inline int pcim_enable_device(struct pci_dev *pdev) { return -EIO; }
 static inline int pci_assign_resource(struct pci_dev *dev, int i)
 { return -EBUSY; }
 static inline int __pci_register_driver(struct pci_driver *drv,
-- 
cgit v1.2.3


From 1d55fdc85799372ab3b0d2a6928e73439f8149aa Mon Sep 17 00:00:00 2001
From: Ashish Kalra <ashish.kalra@amd.com>
Date: Thu, 17 Oct 2019 22:35:11 +0000
Subject: crypto: ccp - Retry SEV INIT command in case of integrity check
 failure.

SEV INIT command loads the SEV related persistent data from NVS
and initializes the platform context. The firmware validates the
persistent state. If validation fails, the firmware will reset
the persisent state and return an integrity check failure status.

At this point, a subsequent INIT command should succeed, so retry
the command. The INIT command retry is only done during driver
initialization.

Additional enums along with SEV_RET_SECURE_DATA_INVALID are added
to sev_ret_code to maintain continuity and relevance of enum values.

Signed-off-by: Ashish Kalra <ashish.kalra@amd.com>
Acked-by: David Rientjes <rientjes@google.com>
Reviewed-by: Brijesh Singh <brijesh.singh@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---
 include/uapi/linux/psp-sev.h | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'include')

diff --git a/include/uapi/linux/psp-sev.h b/include/uapi/linux/psp-sev.h
index 592a0c1b77c9..0549a5c622bf 100644
--- a/include/uapi/linux/psp-sev.h
+++ b/include/uapi/linux/psp-sev.h
@@ -58,6 +58,9 @@ typedef enum {
 	SEV_RET_HWSEV_RET_PLATFORM,
 	SEV_RET_HWSEV_RET_UNSAFE,
 	SEV_RET_UNSUPPORTED,
+	SEV_RET_INVALID_PARAM,
+	SEV_RET_RESOURCE_LIMIT,
+	SEV_RET_SECURE_DATA_INVALID,
 	SEV_RET_MAX,
 } sev_ret_code;
 
-- 
cgit v1.2.3


From d3ca75a8b3d77f2788e6c119ea7c3e3a1ab1e1ca Mon Sep 17 00:00:00 2001
From: Eric Biggers <ebiggers@google.com>
Date: Fri, 25 Oct 2019 12:41:09 -0700
Subject: crypto: skcipher - unify the crypto_has_skcipher*() functions

crypto_has_skcipher() and crypto_has_skcipher2() do the same thing: they
check for the availability of an algorithm of type skcipher, blkcipher,
or ablkcipher, which also meets any non-type constraints the caller
specified.  And they have exactly the same prototype.

Therefore, eliminate the redundancy by removing crypto_has_skcipher()
and renaming crypto_has_skcipher2() to crypto_has_skcipher().

Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---
 include/crypto/skcipher.h | 19 +------------------
 1 file changed, 1 insertion(+), 18 deletions(-)

(limited to 'include')

diff --git a/include/crypto/skcipher.h b/include/crypto/skcipher.h
index aada87916918..e34993f5d190 100644
--- a/include/crypto/skcipher.h
+++ b/include/crypto/skcipher.h
@@ -218,30 +218,13 @@ static inline void crypto_free_sync_skcipher(struct crypto_sync_skcipher *tfm)
  * crypto_has_skcipher() - Search for the availability of an skcipher.
  * @alg_name: is the cra_name / name or cra_driver_name / driver name of the
  *	      skcipher
- * @type: specifies the type of the cipher
- * @mask: specifies the mask for the cipher
- *
- * Return: true when the skcipher is known to the kernel crypto API; false
- *	   otherwise
- */
-static inline int crypto_has_skcipher(const char *alg_name, u32 type,
-					u32 mask)
-{
-	return crypto_has_alg(alg_name, crypto_skcipher_type(type),
-			      crypto_skcipher_mask(mask));
-}
-
-/**
- * crypto_has_skcipher2() - Search for the availability of an skcipher.
- * @alg_name: is the cra_name / name or cra_driver_name / driver name of the
- *	      skcipher
  * @type: specifies the type of the skcipher
  * @mask: specifies the mask for the skcipher
  *
  * Return: true when the skcipher is known to the kernel crypto API; false
  *	   otherwise
  */
-int crypto_has_skcipher2(const char *alg_name, u32 type, u32 mask);
+int crypto_has_skcipher(const char *alg_name, u32 type, u32 mask);
 
 static inline const char *crypto_skcipher_driver_name(
 	struct crypto_skcipher *tfm)
-- 
cgit v1.2.3


From cec0cb8a28f9060367099beeafd0dbdb76fdfae2 Mon Sep 17 00:00:00 2001
From: Eric Biggers <ebiggers@google.com>
Date: Fri, 25 Oct 2019 12:41:10 -0700
Subject: crypto: skcipher - remove crypto_has_ablkcipher()

crypto_has_ablkcipher() has no users, and it does the same thing as
crypto_has_skcipher() anyway.  So remove it.  This also removes the last
user of crypto_skcipher_type() and crypto_skcipher_mask(), so remove
those too.

Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---
 include/linux/crypto.h | 31 -------------------------------
 1 file changed, 31 deletions(-)

(limited to 'include')

diff --git a/include/linux/crypto.h b/include/linux/crypto.h
index 19ea3a371d7b..b7855743f7e3 100644
--- a/include/linux/crypto.h
+++ b/include/linux/crypto.h
@@ -900,20 +900,6 @@ static inline struct crypto_ablkcipher *__crypto_ablkcipher_cast(
 	return (struct crypto_ablkcipher *)tfm;
 }
 
-static inline u32 crypto_skcipher_type(u32 type)
-{
-	type &= ~CRYPTO_ALG_TYPE_MASK;
-	type |= CRYPTO_ALG_TYPE_BLKCIPHER;
-	return type;
-}
-
-static inline u32 crypto_skcipher_mask(u32 mask)
-{
-	mask &= ~CRYPTO_ALG_TYPE_MASK;
-	mask |= CRYPTO_ALG_TYPE_BLKCIPHER_MASK;
-	return mask;
-}
-
 /**
  * DOC: Asynchronous Block Cipher API
  *
@@ -959,23 +945,6 @@ static inline void crypto_free_ablkcipher(struct crypto_ablkcipher *tfm)
 	crypto_free_tfm(crypto_ablkcipher_tfm(tfm));
 }
 
-/**
- * crypto_has_ablkcipher() - Search for the availability of an ablkcipher.
- * @alg_name: is the cra_name / name or cra_driver_name / driver name of the
- *	      ablkcipher
- * @type: specifies the type of the cipher
- * @mask: specifies the mask for the cipher
- *
- * Return: true when the ablkcipher is known to the kernel crypto API; false
- *	   otherwise
- */
-static inline int crypto_has_ablkcipher(const char *alg_name, u32 type,
-					u32 mask)
-{
-	return crypto_has_alg(alg_name, crypto_skcipher_type(type),
-			      crypto_skcipher_mask(mask));
-}
-
 static inline struct ablkcipher_tfm *crypto_ablkcipher_crt(
 	struct crypto_ablkcipher *tfm)
 {
-- 
cgit v1.2.3


From c65058b7587fd3d001c57a50285477be521f5350 Mon Sep 17 00:00:00 2001
From: Eric Biggers <ebiggers@google.com>
Date: Fri, 25 Oct 2019 12:41:12 -0700
Subject: crypto: skcipher - remove the "blkcipher" algorithm type

Now that all "blkcipher" algorithms have been converted to "skcipher",
remove the blkcipher algorithm type.

The skcipher (symmetric key cipher) algorithm type was introduced a few
years ago to replace both blkcipher and ablkcipher (synchronous and
asynchronous block cipher).  The advantages of skcipher include:

  - A much less confusing name, since none of these algorithm types have
    ever actually been for raw block ciphers, but rather for all
    length-preserving encryption modes including block cipher modes of
    operation, stream ciphers, and other length-preserving modes.

  - It unified blkcipher and ablkcipher into a single algorithm type
    which supports both synchronous and asynchronous implementations.
    Note, blkcipher already operated only on scatterlists, so the fact
    that skcipher does too isn't a regression in functionality.

  - Better type safety by using struct skcipher_alg, struct
    crypto_skcipher, etc. instead of crypto_alg, crypto_tfm, etc.

  - It sometimes simplifies the implementations of algorithms.

Also, the blkcipher API was no longer being tested.

Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---
 include/crypto/algapi.h            |  74 -------
 include/crypto/internal/skcipher.h |  12 --
 include/crypto/skcipher.h          |   8 -
 include/linux/crypto.h             | 395 +------------------------------------
 4 files changed, 2 insertions(+), 487 deletions(-)

(limited to 'include')

diff --git a/include/crypto/algapi.h b/include/crypto/algapi.h
index e5bd302f2c49..cadc5257c612 100644
--- a/include/crypto/algapi.h
+++ b/include/crypto/algapi.h
@@ -85,36 +85,6 @@ struct scatter_walk {
 	unsigned int offset;
 };
 
-struct blkcipher_walk {
-	union {
-		struct {
-			struct page *page;
-			unsigned long offset;
-		} phys;
-
-		struct {
-			u8 *page;
-			u8 *addr;
-		} virt;
-	} src, dst;
-
-	struct scatter_walk in;
-	unsigned int nbytes;
-
-	struct scatter_walk out;
-	unsigned int total;
-
-	void *page;
-	u8 *buffer;
-	u8 *iv;
-	unsigned int ivsize;
-
-	int flags;
-	unsigned int walk_blocksize;
-	unsigned int cipher_blocksize;
-	unsigned int alignmask;
-};
-
 struct ablkcipher_walk {
 	struct {
 		struct page *page;
@@ -133,7 +103,6 @@ struct ablkcipher_walk {
 };
 
 extern const struct crypto_type crypto_ablkcipher_type;
-extern const struct crypto_type crypto_blkcipher_type;
 
 void crypto_mod_put(struct crypto_alg *alg);
 
@@ -233,20 +202,6 @@ static inline void crypto_xor_cpy(u8 *dst, const u8 *src1, const u8 *src2,
 	}
 }
 
-int blkcipher_walk_done(struct blkcipher_desc *desc,
-			struct blkcipher_walk *walk, int err);
-int blkcipher_walk_virt(struct blkcipher_desc *desc,
-			struct blkcipher_walk *walk);
-int blkcipher_walk_phys(struct blkcipher_desc *desc,
-			struct blkcipher_walk *walk);
-int blkcipher_walk_virt_block(struct blkcipher_desc *desc,
-			      struct blkcipher_walk *walk,
-			      unsigned int blocksize);
-int blkcipher_aead_walk_virt_block(struct blkcipher_desc *desc,
-				   struct blkcipher_walk *walk,
-				   struct crypto_aead *tfm,
-				   unsigned int blocksize);
-
 int ablkcipher_walk_done(struct ablkcipher_request *req,
 			 struct ablkcipher_walk *walk, int err);
 int ablkcipher_walk_phys(struct ablkcipher_request *req,
@@ -286,25 +241,6 @@ static inline void *crypto_ablkcipher_ctx_aligned(struct crypto_ablkcipher *tfm)
 	return crypto_tfm_ctx_aligned(&tfm->base);
 }
 
-static inline struct crypto_blkcipher *crypto_spawn_blkcipher(
-	struct crypto_spawn *spawn)
-{
-	u32 type = CRYPTO_ALG_TYPE_BLKCIPHER;
-	u32 mask = CRYPTO_ALG_TYPE_MASK;
-
-	return __crypto_blkcipher_cast(crypto_spawn_tfm(spawn, type, mask));
-}
-
-static inline void *crypto_blkcipher_ctx(struct crypto_blkcipher *tfm)
-{
-	return crypto_tfm_ctx(&tfm->base);
-}
-
-static inline void *crypto_blkcipher_ctx_aligned(struct crypto_blkcipher *tfm)
-{
-	return crypto_tfm_ctx_aligned(&tfm->base);
-}
-
 static inline struct crypto_cipher *crypto_spawn_cipher(
 	struct crypto_spawn *spawn)
 {
@@ -319,16 +255,6 @@ static inline struct cipher_alg *crypto_cipher_alg(struct crypto_cipher *tfm)
 	return &crypto_cipher_tfm(tfm)->__crt_alg->cra_cipher;
 }
 
-static inline void blkcipher_walk_init(struct blkcipher_walk *walk,
-				       struct scatterlist *dst,
-				       struct scatterlist *src,
-				       unsigned int nbytes)
-{
-	walk->in.sg = src;
-	walk->out.sg = dst;
-	walk->total = nbytes;
-}
-
 static inline void ablkcipher_walk_init(struct ablkcipher_walk *walk,
 					struct scatterlist *dst,
 					struct scatterlist *src,
diff --git a/include/crypto/internal/skcipher.h b/include/crypto/internal/skcipher.h
index 3175dfeaed2c..454e898d5f5f 100644
--- a/include/crypto/internal/skcipher.h
+++ b/include/crypto/internal/skcipher.h
@@ -182,10 +182,6 @@ static inline u32 skcipher_request_flags(struct skcipher_request *req)
 static inline unsigned int crypto_skcipher_alg_min_keysize(
 	struct skcipher_alg *alg)
 {
-	if ((alg->base.cra_flags & CRYPTO_ALG_TYPE_MASK) ==
-	    CRYPTO_ALG_TYPE_BLKCIPHER)
-		return alg->base.cra_blkcipher.min_keysize;
-
 	if (alg->base.cra_ablkcipher.encrypt)
 		return alg->base.cra_ablkcipher.min_keysize;
 
@@ -195,10 +191,6 @@ static inline unsigned int crypto_skcipher_alg_min_keysize(
 static inline unsigned int crypto_skcipher_alg_max_keysize(
 	struct skcipher_alg *alg)
 {
-	if ((alg->base.cra_flags & CRYPTO_ALG_TYPE_MASK) ==
-	    CRYPTO_ALG_TYPE_BLKCIPHER)
-		return alg->base.cra_blkcipher.max_keysize;
-
 	if (alg->base.cra_ablkcipher.encrypt)
 		return alg->base.cra_ablkcipher.max_keysize;
 
@@ -208,10 +200,6 @@ static inline unsigned int crypto_skcipher_alg_max_keysize(
 static inline unsigned int crypto_skcipher_alg_walksize(
 	struct skcipher_alg *alg)
 {
-	if ((alg->base.cra_flags & CRYPTO_ALG_TYPE_MASK) ==
-	    CRYPTO_ALG_TYPE_BLKCIPHER)
-		return alg->base.cra_blocksize;
-
 	if (alg->base.cra_ablkcipher.encrypt)
 		return alg->base.cra_blocksize;
 
diff --git a/include/crypto/skcipher.h b/include/crypto/skcipher.h
index e34993f5d190..8c5a31e810da 100644
--- a/include/crypto/skcipher.h
+++ b/include/crypto/skcipher.h
@@ -241,10 +241,6 @@ static inline struct skcipher_alg *crypto_skcipher_alg(
 
 static inline unsigned int crypto_skcipher_alg_ivsize(struct skcipher_alg *alg)
 {
-	if ((alg->base.cra_flags & CRYPTO_ALG_TYPE_MASK) ==
-	    CRYPTO_ALG_TYPE_BLKCIPHER)
-		return alg->base.cra_blkcipher.ivsize;
-
 	if (alg->base.cra_ablkcipher.encrypt)
 		return alg->base.cra_ablkcipher.ivsize;
 
@@ -290,10 +286,6 @@ static inline unsigned int crypto_skcipher_blocksize(
 static inline unsigned int crypto_skcipher_alg_chunksize(
 	struct skcipher_alg *alg)
 {
-	if ((alg->base.cra_flags & CRYPTO_ALG_TYPE_MASK) ==
-	    CRYPTO_ALG_TYPE_BLKCIPHER)
-		return alg->base.cra_blocksize;
-
 	if (alg->base.cra_ablkcipher.encrypt)
 		return alg->base.cra_blocksize;
 
diff --git a/include/linux/crypto.h b/include/linux/crypto.h
index b7855743f7e3..e9f2c6b5d800 100644
--- a/include/linux/crypto.h
+++ b/include/linux/crypto.h
@@ -41,7 +41,6 @@
 #define CRYPTO_ALG_TYPE_CIPHER		0x00000001
 #define CRYPTO_ALG_TYPE_COMPRESS	0x00000002
 #define CRYPTO_ALG_TYPE_AEAD		0x00000003
-#define CRYPTO_ALG_TYPE_BLKCIPHER	0x00000004
 #define CRYPTO_ALG_TYPE_ABLKCIPHER	0x00000005
 #define CRYPTO_ALG_TYPE_SKCIPHER	0x00000005
 #define CRYPTO_ALG_TYPE_KPP		0x00000008
@@ -55,7 +54,6 @@
 
 #define CRYPTO_ALG_TYPE_HASH_MASK	0x0000000e
 #define CRYPTO_ALG_TYPE_AHASH_MASK	0x0000000e
-#define CRYPTO_ALG_TYPE_BLKCIPHER_MASK	0x0000000c
 #define CRYPTO_ALG_TYPE_ACOMPRESS_MASK	0x0000000e
 
 #define CRYPTO_ALG_LARVAL		0x00000010
@@ -141,7 +139,6 @@
 struct scatterlist;
 struct crypto_ablkcipher;
 struct crypto_async_request;
-struct crypto_blkcipher;
 struct crypto_tfm;
 struct crypto_type;
 
@@ -176,12 +173,6 @@ struct ablkcipher_request {
 	void *__ctx[] CRYPTO_MINALIGN_ATTR;
 };
 
-struct blkcipher_desc {
-	struct crypto_blkcipher *tfm;
-	void *info;
-	u32 flags;
-};
-
 /**
  * DOC: Block Cipher Algorithm Definitions
  *
@@ -240,32 +231,6 @@ struct ablkcipher_alg {
 	unsigned int ivsize;
 };
 
-/**
- * struct blkcipher_alg - synchronous block cipher definition
- * @min_keysize: see struct ablkcipher_alg
- * @max_keysize: see struct ablkcipher_alg
- * @setkey: see struct ablkcipher_alg
- * @encrypt: see struct ablkcipher_alg
- * @decrypt: see struct ablkcipher_alg
- * @ivsize: see struct ablkcipher_alg
- *
- * All fields except @ivsize are mandatory and must be filled.
- */
-struct blkcipher_alg {
-	int (*setkey)(struct crypto_tfm *tfm, const u8 *key,
-	              unsigned int keylen);
-	int (*encrypt)(struct blkcipher_desc *desc,
-		       struct scatterlist *dst, struct scatterlist *src,
-		       unsigned int nbytes);
-	int (*decrypt)(struct blkcipher_desc *desc,
-		       struct scatterlist *dst, struct scatterlist *src,
-		       unsigned int nbytes);
-
-	unsigned int min_keysize;
-	unsigned int max_keysize;
-	unsigned int ivsize;
-};
-
 /**
  * struct cipher_alg - single-block symmetric ciphers definition
  * @cia_min_keysize: Minimum key size supported by the transformation. This is
@@ -451,7 +416,6 @@ struct crypto_istat_rng {
 #endif /* CONFIG_CRYPTO_STATS */
 
 #define cra_ablkcipher	cra_u.ablkcipher
-#define cra_blkcipher	cra_u.blkcipher
 #define cra_cipher	cra_u.cipher
 #define cra_compress	cra_u.compress
 
@@ -499,9 +463,8 @@ struct crypto_istat_rng {
  *		     transformation algorithm.
  * @cra_type: Type of the cryptographic transformation. This is a pointer to
  *	      struct crypto_type, which implements callbacks common for all
- *	      transformation types. There are multiple options:
- *	      &crypto_blkcipher_type, &crypto_ablkcipher_type,
- *	      &crypto_ahash_type, &crypto_rng_type.
+ *	      transformation types. There are multiple options, such as
+ *	      &crypto_skcipher_type, &crypto_ahash_type, &crypto_rng_type.
  *	      This field might be empty. In that case, there are no common
  *	      callbacks. This is the case for: cipher, compress, shash.
  * @cra_u: Callbacks implementing the transformation. This is a union of
@@ -522,8 +485,6 @@ struct crypto_istat_rng {
  *	      @cra_init.
  * @cra_u.ablkcipher: Union member which contains an asynchronous block cipher
  *		      definition. See @struct @ablkcipher_alg.
- * @cra_u.blkcipher: Union member which contains a synchronous block cipher
- * 		     definition See @struct @blkcipher_alg.
  * @cra_u.cipher: Union member which contains a single-block symmetric cipher
  *		  definition. See @struct @cipher_alg.
  * @cra_u.compress: Union member which contains a (de)compression algorithm.
@@ -566,7 +527,6 @@ struct crypto_alg {
 
 	union {
 		struct ablkcipher_alg ablkcipher;
-		struct blkcipher_alg blkcipher;
 		struct cipher_alg cipher;
 		struct compress_alg compress;
 	} cra_u;
@@ -727,16 +687,6 @@ struct ablkcipher_tfm {
 	unsigned int reqsize;
 };
 
-struct blkcipher_tfm {
-	void *iv;
-	int (*setkey)(struct crypto_tfm *tfm, const u8 *key,
-		      unsigned int keylen);
-	int (*encrypt)(struct blkcipher_desc *desc, struct scatterlist *dst,
-		       struct scatterlist *src, unsigned int nbytes);
-	int (*decrypt)(struct blkcipher_desc *desc, struct scatterlist *dst,
-		       struct scatterlist *src, unsigned int nbytes);
-};
-
 struct cipher_tfm {
 	int (*cit_setkey)(struct crypto_tfm *tfm,
 	                  const u8 *key, unsigned int keylen);
@@ -754,7 +704,6 @@ struct compress_tfm {
 };
 
 #define crt_ablkcipher	crt_u.ablkcipher
-#define crt_blkcipher	crt_u.blkcipher
 #define crt_cipher	crt_u.cipher
 #define crt_compress	crt_u.compress
 
@@ -764,7 +713,6 @@ struct crypto_tfm {
 	
 	union {
 		struct ablkcipher_tfm ablkcipher;
-		struct blkcipher_tfm blkcipher;
 		struct cipher_tfm cipher;
 		struct compress_tfm compress;
 	} crt_u;
@@ -780,10 +728,6 @@ struct crypto_ablkcipher {
 	struct crypto_tfm base;
 };
 
-struct crypto_blkcipher {
-	struct crypto_tfm base;
-};
-
 struct crypto_cipher {
 	struct crypto_tfm base;
 };
@@ -1232,341 +1176,6 @@ static inline void ablkcipher_request_set_crypt(
 	req->info = iv;
 }
 
-/**
- * DOC: Synchronous Block Cipher API
- *
- * The synchronous block cipher API is used with the ciphers of type
- * CRYPTO_ALG_TYPE_BLKCIPHER (listed as type "blkcipher" in /proc/crypto)
- *
- * Synchronous calls, have a context in the tfm. But since a single tfm can be
- * used in multiple calls and in parallel, this info should not be changeable
- * (unless a lock is used). This applies, for example, to the symmetric key.
- * However, the IV is changeable, so there is an iv field in blkcipher_tfm
- * structure for synchronous blkcipher api. So, its the only state info that can
- * be kept for synchronous calls without using a big lock across a tfm.
- *
- * The block cipher API allows the use of a complete cipher, i.e. a cipher
- * consisting of a template (a block chaining mode) and a single block cipher
- * primitive (e.g. AES).
- *
- * The plaintext data buffer and the ciphertext data buffer are pointed to
- * by using scatter/gather lists. The cipher operation is performed
- * on all segments of the provided scatter/gather lists.
- *
- * The kernel crypto API supports a cipher operation "in-place" which means that
- * the caller may provide the same scatter/gather list for the plaintext and
- * cipher text. After the completion of the cipher operation, the plaintext
- * data is replaced with the ciphertext data in case of an encryption and vice
- * versa for a decryption. The caller must ensure that the scatter/gather lists
- * for the output data point to sufficiently large buffers, i.e. multiples of
- * the block size of the cipher.
- */
-
-static inline struct crypto_blkcipher *__crypto_blkcipher_cast(
-	struct crypto_tfm *tfm)
-{
-	return (struct crypto_blkcipher *)tfm;
-}
-
-static inline struct crypto_blkcipher *crypto_blkcipher_cast(
-	struct crypto_tfm *tfm)
-{
-	BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_BLKCIPHER);
-	return __crypto_blkcipher_cast(tfm);
-}
-
-/**
- * crypto_alloc_blkcipher() - allocate synchronous block cipher handle
- * @alg_name: is the cra_name / name or cra_driver_name / driver name of the
- *	      blkcipher cipher
- * @type: specifies the type of the cipher
- * @mask: specifies the mask for the cipher
- *
- * Allocate a cipher handle for a block cipher. The returned struct
- * crypto_blkcipher is the cipher handle that is required for any subsequent
- * API invocation for that block cipher.
- *
- * Return: allocated cipher handle in case of success; IS_ERR() is true in case
- *	   of an error, PTR_ERR() returns the error code.
- */
-static inline struct crypto_blkcipher *crypto_alloc_blkcipher(
-	const char *alg_name, u32 type, u32 mask)
-{
-	type &= ~CRYPTO_ALG_TYPE_MASK;
-	type |= CRYPTO_ALG_TYPE_BLKCIPHER;
-	mask |= CRYPTO_ALG_TYPE_MASK;
-
-	return __crypto_blkcipher_cast(crypto_alloc_base(alg_name, type, mask));
-}
-
-static inline struct crypto_tfm *crypto_blkcipher_tfm(
-	struct crypto_blkcipher *tfm)
-{
-	return &tfm->base;
-}
-
-/**
- * crypto_free_blkcipher() - zeroize and free the block cipher handle
- * @tfm: cipher handle to be freed
- */
-static inline void crypto_free_blkcipher(struct crypto_blkcipher *tfm)
-{
-	crypto_free_tfm(crypto_blkcipher_tfm(tfm));
-}
-
-/**
- * crypto_has_blkcipher() - Search for the availability of a block cipher
- * @alg_name: is the cra_name / name or cra_driver_name / driver name of the
- *	      block cipher
- * @type: specifies the type of the cipher
- * @mask: specifies the mask for the cipher
- *
- * Return: true when the block cipher is known to the kernel crypto API; false
- *	   otherwise
- */
-static inline int crypto_has_blkcipher(const char *alg_name, u32 type, u32 mask)
-{
-	type &= ~CRYPTO_ALG_TYPE_MASK;
-	type |= CRYPTO_ALG_TYPE_BLKCIPHER;
-	mask |= CRYPTO_ALG_TYPE_MASK;
-
-	return crypto_has_alg(alg_name, type, mask);
-}
-
-/**
- * crypto_blkcipher_name() - return the name / cra_name from the cipher handle
- * @tfm: cipher handle
- *
- * Return: The character string holding the name of the cipher
- */
-static inline const char *crypto_blkcipher_name(struct crypto_blkcipher *tfm)
-{
-	return crypto_tfm_alg_name(crypto_blkcipher_tfm(tfm));
-}
-
-static inline struct blkcipher_tfm *crypto_blkcipher_crt(
-	struct crypto_blkcipher *tfm)
-{
-	return &crypto_blkcipher_tfm(tfm)->crt_blkcipher;
-}
-
-static inline struct blkcipher_alg *crypto_blkcipher_alg(
-	struct crypto_blkcipher *tfm)
-{
-	return &crypto_blkcipher_tfm(tfm)->__crt_alg->cra_blkcipher;
-}
-
-/**
- * crypto_blkcipher_ivsize() - obtain IV size
- * @tfm: cipher handle
- *
- * The size of the IV for the block cipher referenced by the cipher handle is
- * returned. This IV size may be zero if the cipher does not need an IV.
- *
- * Return: IV size in bytes
- */
-static inline unsigned int crypto_blkcipher_ivsize(struct crypto_blkcipher *tfm)
-{
-	return crypto_blkcipher_alg(tfm)->ivsize;
-}
-
-/**
- * crypto_blkcipher_blocksize() - obtain block size of cipher
- * @tfm: cipher handle
- *
- * The block size for the block cipher referenced with the cipher handle is
- * returned. The caller may use that information to allocate appropriate
- * memory for the data returned by the encryption or decryption operation.
- *
- * Return: block size of cipher
- */
-static inline unsigned int crypto_blkcipher_blocksize(
-	struct crypto_blkcipher *tfm)
-{
-	return crypto_tfm_alg_blocksize(crypto_blkcipher_tfm(tfm));
-}
-
-static inline unsigned int crypto_blkcipher_alignmask(
-	struct crypto_blkcipher *tfm)
-{
-	return crypto_tfm_alg_alignmask(crypto_blkcipher_tfm(tfm));
-}
-
-static inline u32 crypto_blkcipher_get_flags(struct crypto_blkcipher *tfm)
-{
-	return crypto_tfm_get_flags(crypto_blkcipher_tfm(tfm));
-}
-
-static inline void crypto_blkcipher_set_flags(struct crypto_blkcipher *tfm,
-					      u32 flags)
-{
-	crypto_tfm_set_flags(crypto_blkcipher_tfm(tfm), flags);
-}
-
-static inline void crypto_blkcipher_clear_flags(struct crypto_blkcipher *tfm,
-						u32 flags)
-{
-	crypto_tfm_clear_flags(crypto_blkcipher_tfm(tfm), flags);
-}
-
-/**
- * crypto_blkcipher_setkey() - set key for cipher
- * @tfm: cipher handle
- * @key: buffer holding the key
- * @keylen: length of the key in bytes
- *
- * The caller provided key is set for the block cipher referenced by the cipher
- * handle.
- *
- * Note, the key length determines the cipher type. Many block ciphers implement
- * different cipher modes depending on the key size, such as AES-128 vs AES-192
- * vs. AES-256. When providing a 16 byte key for an AES cipher handle, AES-128
- * is performed.
- *
- * Return: 0 if the setting of the key was successful; < 0 if an error occurred
- */
-static inline int crypto_blkcipher_setkey(struct crypto_blkcipher *tfm,
-					  const u8 *key, unsigned int keylen)
-{
-	return crypto_blkcipher_crt(tfm)->setkey(crypto_blkcipher_tfm(tfm),
-						 key, keylen);
-}
-
-/**
- * crypto_blkcipher_encrypt() - encrypt plaintext
- * @desc: reference to the block cipher handle with meta data
- * @dst: scatter/gather list that is filled by the cipher operation with the
- *	ciphertext
- * @src: scatter/gather list that holds the plaintext
- * @nbytes: number of bytes of the plaintext to encrypt.
- *
- * Encrypt plaintext data using the IV set by the caller with a preceding
- * call of crypto_blkcipher_set_iv.
- *
- * The blkcipher_desc data structure must be filled by the caller and can
- * reside on the stack. The caller must fill desc as follows: desc.tfm is filled
- * with the block cipher handle; desc.flags is filled with either
- * CRYPTO_TFM_REQ_MAY_SLEEP or 0.
- *
- * Return: 0 if the cipher operation was successful; < 0 if an error occurred
- */
-static inline int crypto_blkcipher_encrypt(struct blkcipher_desc *desc,
-					   struct scatterlist *dst,
-					   struct scatterlist *src,
-					   unsigned int nbytes)
-{
-	desc->info = crypto_blkcipher_crt(desc->tfm)->iv;
-	return crypto_blkcipher_crt(desc->tfm)->encrypt(desc, dst, src, nbytes);
-}
-
-/**
- * crypto_blkcipher_encrypt_iv() - encrypt plaintext with dedicated IV
- * @desc: reference to the block cipher handle with meta data
- * @dst: scatter/gather list that is filled by the cipher operation with the
- *	ciphertext
- * @src: scatter/gather list that holds the plaintext
- * @nbytes: number of bytes of the plaintext to encrypt.
- *
- * Encrypt plaintext data with the use of an IV that is solely used for this
- * cipher operation. Any previously set IV is not used.
- *
- * The blkcipher_desc data structure must be filled by the caller and can
- * reside on the stack. The caller must fill desc as follows: desc.tfm is filled
- * with the block cipher handle; desc.info is filled with the IV to be used for
- * the current operation; desc.flags is filled with either
- * CRYPTO_TFM_REQ_MAY_SLEEP or 0.
- *
- * Return: 0 if the cipher operation was successful; < 0 if an error occurred
- */
-static inline int crypto_blkcipher_encrypt_iv(struct blkcipher_desc *desc,
-					      struct scatterlist *dst,
-					      struct scatterlist *src,
-					      unsigned int nbytes)
-{
-	return crypto_blkcipher_crt(desc->tfm)->encrypt(desc, dst, src, nbytes);
-}
-
-/**
- * crypto_blkcipher_decrypt() - decrypt ciphertext
- * @desc: reference to the block cipher handle with meta data
- * @dst: scatter/gather list that is filled by the cipher operation with the
- *	plaintext
- * @src: scatter/gather list that holds the ciphertext
- * @nbytes: number of bytes of the ciphertext to decrypt.
- *
- * Decrypt ciphertext data using the IV set by the caller with a preceding
- * call of crypto_blkcipher_set_iv.
- *
- * The blkcipher_desc data structure must be filled by the caller as documented
- * for the crypto_blkcipher_encrypt call above.
- *
- * Return: 0 if the cipher operation was successful; < 0 if an error occurred
- *
- */
-static inline int crypto_blkcipher_decrypt(struct blkcipher_desc *desc,
-					   struct scatterlist *dst,
-					   struct scatterlist *src,
-					   unsigned int nbytes)
-{
-	desc->info = crypto_blkcipher_crt(desc->tfm)->iv;
-	return crypto_blkcipher_crt(desc->tfm)->decrypt(desc, dst, src, nbytes);
-}
-
-/**
- * crypto_blkcipher_decrypt_iv() - decrypt ciphertext with dedicated IV
- * @desc: reference to the block cipher handle with meta data
- * @dst: scatter/gather list that is filled by the cipher operation with the
- *	plaintext
- * @src: scatter/gather list that holds the ciphertext
- * @nbytes: number of bytes of the ciphertext to decrypt.
- *
- * Decrypt ciphertext data with the use of an IV that is solely used for this
- * cipher operation. Any previously set IV is not used.
- *
- * The blkcipher_desc data structure must be filled by the caller as documented
- * for the crypto_blkcipher_encrypt_iv call above.
- *
- * Return: 0 if the cipher operation was successful; < 0 if an error occurred
- */
-static inline int crypto_blkcipher_decrypt_iv(struct blkcipher_desc *desc,
-					      struct scatterlist *dst,
-					      struct scatterlist *src,
-					      unsigned int nbytes)
-{
-	return crypto_blkcipher_crt(desc->tfm)->decrypt(desc, dst, src, nbytes);
-}
-
-/**
- * crypto_blkcipher_set_iv() - set IV for cipher
- * @tfm: cipher handle
- * @src: buffer holding the IV
- * @len: length of the IV in bytes
- *
- * The caller provided IV is set for the block cipher referenced by the cipher
- * handle.
- */
-static inline void crypto_blkcipher_set_iv(struct crypto_blkcipher *tfm,
-					   const u8 *src, unsigned int len)
-{
-	memcpy(crypto_blkcipher_crt(tfm)->iv, src, len);
-}
-
-/**
- * crypto_blkcipher_get_iv() - obtain IV from cipher
- * @tfm: cipher handle
- * @dst: buffer filled with the IV
- * @len: length of the buffer dst
- *
- * The caller can obtain the IV set for the block cipher referenced by the
- * cipher handle and store it into the user-provided buffer. If the buffer
- * has an insufficient space, the IV is truncated to fit the buffer.
- */
-static inline void crypto_blkcipher_get_iv(struct crypto_blkcipher *tfm,
-					   u8 *dst, unsigned int len)
-{
-	memcpy(dst, crypto_blkcipher_crt(tfm)->iv, len);
-}
-
 /**
  * DOC: Single Block Cipher API
  *
-- 
cgit v1.2.3


From 5fb8ef25803ef33e2eb60b626435828b937bed75 Mon Sep 17 00:00:00 2001
From: Ard Biesheuvel <ardb@kernel.org>
Date: Fri, 8 Nov 2019 13:22:08 +0100
Subject: crypto: chacha - move existing library code into lib/crypto

Currently, our generic ChaCha implementation consists of a permute
function in lib/chacha.c that operates on the 64-byte ChaCha state
directly [and which is always included into the core kernel since it
is used by the /dev/random driver], and the crypto API plumbing to
expose it as a skcipher.

In order to support in-kernel users that need the ChaCha streamcipher
but have no need [or tolerance] for going through the abstractions of
the crypto API, let's expose the streamcipher bits via a library API
as well, in a way that permits the implementation to be superseded by
an architecture specific one if provided.

So move the streamcipher code into a separate module in lib/crypto,
and expose the init() and crypt() routines to users of the library.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---
 include/crypto/chacha.h          | 77 +++++++++++++++++++++++++++++++---------
 include/crypto/internal/chacha.h | 53 +++++++++++++++++++++++++++
 2 files changed, 113 insertions(+), 17 deletions(-)
 create mode 100644 include/crypto/internal/chacha.h

(limited to 'include')

diff --git a/include/crypto/chacha.h b/include/crypto/chacha.h
index d1e723c6a37d..5c662f8fecac 100644
--- a/include/crypto/chacha.h
+++ b/include/crypto/chacha.h
@@ -15,9 +15,8 @@
 #ifndef _CRYPTO_CHACHA_H
 #define _CRYPTO_CHACHA_H
 
-#include <crypto/skcipher.h>
+#include <asm/unaligned.h>
 #include <linux/types.h>
-#include <linux/crypto.h>
 
 /* 32-bit stream position, then 96-bit nonce (RFC7539 convention) */
 #define CHACHA_IV_SIZE		16
@@ -29,26 +28,70 @@
 /* 192-bit nonce, then 64-bit stream position */
 #define XCHACHA_IV_SIZE		32
 
-struct chacha_ctx {
-	u32 key[8];
-	int nrounds;
-};
-
-void chacha_block(u32 *state, u8 *stream, int nrounds);
+void chacha_block_generic(u32 *state, u8 *stream, int nrounds);
 static inline void chacha20_block(u32 *state, u8 *stream)
 {
-	chacha_block(state, stream, 20);
+	chacha_block_generic(state, stream, 20);
 }
-void hchacha_block(const u32 *in, u32 *out, int nrounds);
 
-void crypto_chacha_init(u32 *state, const struct chacha_ctx *ctx, const u8 *iv);
+void hchacha_block_arch(const u32 *state, u32 *out, int nrounds);
+void hchacha_block_generic(const u32 *state, u32 *out, int nrounds);
+
+static inline void hchacha_block(const u32 *state, u32 *out, int nrounds)
+{
+	if (IS_ENABLED(CONFIG_CRYPTO_ARCH_HAVE_LIB_CHACHA))
+		hchacha_block_arch(state, out, nrounds);
+	else
+		hchacha_block_generic(state, out, nrounds);
+}
 
-int crypto_chacha20_setkey(struct crypto_skcipher *tfm, const u8 *key,
-			   unsigned int keysize);
-int crypto_chacha12_setkey(struct crypto_skcipher *tfm, const u8 *key,
-			   unsigned int keysize);
+void chacha_init_arch(u32 *state, const u32 *key, const u8 *iv);
+static inline void chacha_init_generic(u32 *state, const u32 *key, const u8 *iv)
+{
+	state[0]  = 0x61707865; /* "expa" */
+	state[1]  = 0x3320646e; /* "nd 3" */
+	state[2]  = 0x79622d32; /* "2-by" */
+	state[3]  = 0x6b206574; /* "te k" */
+	state[4]  = key[0];
+	state[5]  = key[1];
+	state[6]  = key[2];
+	state[7]  = key[3];
+	state[8]  = key[4];
+	state[9]  = key[5];
+	state[10] = key[6];
+	state[11] = key[7];
+	state[12] = get_unaligned_le32(iv +  0);
+	state[13] = get_unaligned_le32(iv +  4);
+	state[14] = get_unaligned_le32(iv +  8);
+	state[15] = get_unaligned_le32(iv + 12);
+}
 
-int crypto_chacha_crypt(struct skcipher_request *req);
-int crypto_xchacha_crypt(struct skcipher_request *req);
+static inline void chacha_init(u32 *state, const u32 *key, const u8 *iv)
+{
+	if (IS_ENABLED(CONFIG_CRYPTO_ARCH_HAVE_LIB_CHACHA))
+		chacha_init_arch(state, key, iv);
+	else
+		chacha_init_generic(state, key, iv);
+}
+
+void chacha_crypt_arch(u32 *state, u8 *dst, const u8 *src,
+		       unsigned int bytes, int nrounds);
+void chacha_crypt_generic(u32 *state, u8 *dst, const u8 *src,
+			  unsigned int bytes, int nrounds);
+
+static inline void chacha_crypt(u32 *state, u8 *dst, const u8 *src,
+				unsigned int bytes, int nrounds)
+{
+	if (IS_ENABLED(CONFIG_CRYPTO_ARCH_HAVE_LIB_CHACHA))
+		chacha_crypt_arch(state, dst, src, bytes, nrounds);
+	else
+		chacha_crypt_generic(state, dst, src, bytes, nrounds);
+}
+
+static inline void chacha20_crypt(u32 *state, u8 *dst, const u8 *src,
+				  unsigned int bytes)
+{
+	chacha_crypt(state, dst, src, bytes, 20);
+}
 
 #endif /* _CRYPTO_CHACHA_H */
diff --git a/include/crypto/internal/chacha.h b/include/crypto/internal/chacha.h
new file mode 100644
index 000000000000..c0e40b245431
--- /dev/null
+++ b/include/crypto/internal/chacha.h
@@ -0,0 +1,53 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifndef _CRYPTO_INTERNAL_CHACHA_H
+#define _CRYPTO_INTERNAL_CHACHA_H
+
+#include <crypto/chacha.h>
+#include <crypto/internal/skcipher.h>
+#include <linux/crypto.h>
+
+struct chacha_ctx {
+	u32 key[8];
+	int nrounds;
+};
+
+void crypto_chacha_init(u32 *state, const struct chacha_ctx *ctx, const u8 *iv);
+
+static inline int chacha_setkey(struct crypto_skcipher *tfm, const u8 *key,
+				unsigned int keysize, int nrounds)
+{
+	struct chacha_ctx *ctx = crypto_skcipher_ctx(tfm);
+	int i;
+
+	if (keysize != CHACHA_KEY_SIZE)
+		return -EINVAL;
+
+	for (i = 0; i < ARRAY_SIZE(ctx->key); i++)
+		ctx->key[i] = get_unaligned_le32(key + i * sizeof(u32));
+
+	ctx->nrounds = nrounds;
+	return 0;
+}
+
+static inline int chacha20_setkey(struct crypto_skcipher *tfm, const u8 *key,
+				  unsigned int keysize)
+{
+	return chacha_setkey(tfm, key, keysize, 20);
+}
+
+static int inline chacha12_setkey(struct crypto_skcipher *tfm, const u8 *key,
+				  unsigned int keysize)
+{
+	return chacha_setkey(tfm, key, keysize, 12);
+}
+
+int crypto_chacha20_setkey(struct crypto_skcipher *tfm, const u8 *key,
+			   unsigned int keysize);
+int crypto_chacha12_setkey(struct crypto_skcipher *tfm, const u8 *key,
+			   unsigned int keysize);
+
+int crypto_chacha_crypt(struct skcipher_request *req);
+int crypto_xchacha_crypt(struct skcipher_request *req);
+
+#endif /* _CRYPTO_CHACHA_H */
-- 
cgit v1.2.3


From 84e03fa39fbe95a5567d43bff458c6d3b3a23ad1 Mon Sep 17 00:00:00 2001
From: Ard Biesheuvel <ardb@kernel.org>
Date: Fri, 8 Nov 2019 13:22:10 +0100
Subject: crypto: x86/chacha - expose SIMD ChaCha routine as library function

Wire the existing x86 SIMD ChaCha code into the new ChaCha library
interface, so that users of the library interface will get the
accelerated version when available.

Given that calls into the library API will always go through the
routines in this module if it is enabled, switch to static keys
to select the optimal implementation available (which may be none
at all, in which case we defer to the generic implementation for
all invocations).

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---
 include/crypto/chacha.h | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'include')

diff --git a/include/crypto/chacha.h b/include/crypto/chacha.h
index 5c662f8fecac..2676f4fbd4c1 100644
--- a/include/crypto/chacha.h
+++ b/include/crypto/chacha.h
@@ -25,6 +25,12 @@
 #define CHACHA_BLOCK_SIZE	64
 #define CHACHAPOLY_IV_SIZE	12
 
+#ifdef CONFIG_X86_64
+#define CHACHA_STATE_WORDS	((CHACHA_BLOCK_SIZE + 12) / sizeof(u32))
+#else
+#define CHACHA_STATE_WORDS	(CHACHA_BLOCK_SIZE / sizeof(u32))
+#endif
+
 /* 192-bit nonce, then 64-bit stream position */
 #define XCHACHA_IV_SIZE		32
 
-- 
cgit v1.2.3


From 22cf705360707ced15f9fe5423938f313c7df536 Mon Sep 17 00:00:00 2001
From: Ard Biesheuvel <ardb@kernel.org>
Date: Fri, 8 Nov 2019 13:22:18 +0100
Subject: crypto: chacha - unexport chacha_generic routines

Now that all users of generic ChaCha code have moved to the core library,
there is no longer a need for the generic ChaCha skcpiher driver to
export parts of it implementation for reuse by other drivers. So drop
the exports, and make the symbols static.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---
 include/crypto/internal/chacha.h | 10 ----------
 1 file changed, 10 deletions(-)

(limited to 'include')

diff --git a/include/crypto/internal/chacha.h b/include/crypto/internal/chacha.h
index c0e40b245431..aa5d4a16aac5 100644
--- a/include/crypto/internal/chacha.h
+++ b/include/crypto/internal/chacha.h
@@ -12,8 +12,6 @@ struct chacha_ctx {
 	int nrounds;
 };
 
-void crypto_chacha_init(u32 *state, const struct chacha_ctx *ctx, const u8 *iv);
-
 static inline int chacha_setkey(struct crypto_skcipher *tfm, const u8 *key,
 				unsigned int keysize, int nrounds)
 {
@@ -42,12 +40,4 @@ static int inline chacha12_setkey(struct crypto_skcipher *tfm, const u8 *key,
 	return chacha_setkey(tfm, key, keysize, 12);
 }
 
-int crypto_chacha20_setkey(struct crypto_skcipher *tfm, const u8 *key,
-			   unsigned int keysize);
-int crypto_chacha12_setkey(struct crypto_skcipher *tfm, const u8 *key,
-			   unsigned int keysize);
-
-int crypto_chacha_crypt(struct skcipher_request *req);
-int crypto_xchacha_crypt(struct skcipher_request *req);
-
 #endif /* _CRYPTO_CHACHA_H */
-- 
cgit v1.2.3


From 48ea8c6ebc96bc0990e12ee1c43d0832c23576bb Mon Sep 17 00:00:00 2001
From: Ard Biesheuvel <ardb@kernel.org>
Date: Fri, 8 Nov 2019 13:22:19 +0100
Subject: crypto: poly1305 - move core routines into a separate library

Move the core Poly1305 routines shared between the generic Poly1305
shash driver and the Adiantum and NHPoly1305 drivers into a separate
library so that using just this pieces does not pull in the crypto
API pieces of the generic Poly1305 routine.

In a subsequent patch, we will augment this generic library with
init/update/final routines so that Poyl1305 algorithm can be used
directly without the need for using the crypto API's shash abstraction.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---
 include/crypto/internal/poly1305.h | 67 ++++++++++++++++++++++++++++++++++++++
 include/crypto/poly1305.h          | 23 -------------
 2 files changed, 67 insertions(+), 23 deletions(-)
 create mode 100644 include/crypto/internal/poly1305.h

(limited to 'include')

diff --git a/include/crypto/internal/poly1305.h b/include/crypto/internal/poly1305.h
new file mode 100644
index 000000000000..cb58e61f73a7
--- /dev/null
+++ b/include/crypto/internal/poly1305.h
@@ -0,0 +1,67 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Common values for the Poly1305 algorithm
+ */
+
+#ifndef _CRYPTO_INTERNAL_POLY1305_H
+#define _CRYPTO_INTERNAL_POLY1305_H
+
+#include <asm/unaligned.h>
+#include <linux/types.h>
+#include <crypto/poly1305.h>
+
+struct shash_desc;
+
+/*
+ * Poly1305 core functions.  These implement the ε-almost-∆-universal hash
+ * function underlying the Poly1305 MAC, i.e. they don't add an encrypted nonce
+ * ("s key") at the end.  They also only support block-aligned inputs.
+ */
+void poly1305_core_setkey(struct poly1305_key *key, const u8 *raw_key);
+static inline void poly1305_core_init(struct poly1305_state *state)
+{
+	*state = (struct poly1305_state){};
+}
+
+void poly1305_core_blocks(struct poly1305_state *state,
+			  const struct poly1305_key *key, const void *src,
+			  unsigned int nblocks, u32 hibit);
+void poly1305_core_emit(const struct poly1305_state *state, void *dst);
+
+/* Crypto API helper functions for the Poly1305 MAC */
+int crypto_poly1305_init(struct shash_desc *desc);
+
+int crypto_poly1305_update(struct shash_desc *desc,
+			   const u8 *src, unsigned int srclen);
+int crypto_poly1305_final(struct shash_desc *desc, u8 *dst);
+
+/*
+ * Poly1305 requires a unique key for each tag, which implies that we can't set
+ * it on the tfm that gets accessed by multiple users simultaneously. Instead we
+ * expect the key as the first 32 bytes in the update() call.
+ */
+static inline
+unsigned int crypto_poly1305_setdesckey(struct poly1305_desc_ctx *dctx,
+					const u8 *src, unsigned int srclen)
+{
+	if (!dctx->sset) {
+		if (!dctx->rset && srclen >= POLY1305_BLOCK_SIZE) {
+			poly1305_core_setkey(&dctx->r, src);
+			src += POLY1305_BLOCK_SIZE;
+			srclen -= POLY1305_BLOCK_SIZE;
+			dctx->rset = true;
+		}
+		if (srclen >= POLY1305_BLOCK_SIZE) {
+			dctx->s[0] = get_unaligned_le32(src +  0);
+			dctx->s[1] = get_unaligned_le32(src +  4);
+			dctx->s[2] = get_unaligned_le32(src +  8);
+			dctx->s[3] = get_unaligned_le32(src + 12);
+			src += POLY1305_BLOCK_SIZE;
+			srclen -= POLY1305_BLOCK_SIZE;
+			dctx->sset = true;
+		}
+	}
+	return srclen;
+}
+
+#endif
diff --git a/include/crypto/poly1305.h b/include/crypto/poly1305.h
index 34317ed2071e..f5a4319c2a1f 100644
--- a/include/crypto/poly1305.h
+++ b/include/crypto/poly1305.h
@@ -38,27 +38,4 @@ struct poly1305_desc_ctx {
 	bool sset;
 };
 
-/*
- * Poly1305 core functions.  These implement the ε-almost-∆-universal hash
- * function underlying the Poly1305 MAC, i.e. they don't add an encrypted nonce
- * ("s key") at the end.  They also only support block-aligned inputs.
- */
-void poly1305_core_setkey(struct poly1305_key *key, const u8 *raw_key);
-static inline void poly1305_core_init(struct poly1305_state *state)
-{
-	memset(state->h, 0, sizeof(state->h));
-}
-void poly1305_core_blocks(struct poly1305_state *state,
-			  const struct poly1305_key *key,
-			  const void *src, unsigned int nblocks);
-void poly1305_core_emit(const struct poly1305_state *state, void *dst);
-
-/* Crypto API helper functions for the Poly1305 MAC */
-int crypto_poly1305_init(struct shash_desc *desc);
-unsigned int crypto_poly1305_setdesckey(struct poly1305_desc_ctx *dctx,
-					const u8 *src, unsigned int srclen);
-int crypto_poly1305_update(struct shash_desc *desc,
-			   const u8 *src, unsigned int srclen);
-int crypto_poly1305_final(struct shash_desc *desc, u8 *dst);
-
 #endif
-- 
cgit v1.2.3


From ad8f5b88383ea685f2b8df2a12ee3e08089a1287 Mon Sep 17 00:00:00 2001
From: Ard Biesheuvel <ardb@kernel.org>
Date: Fri, 8 Nov 2019 13:22:20 +0100
Subject: crypto: x86/poly1305 - unify Poly1305 state struct with generic code

In preparation of exposing a Poly1305 library interface directly from
the accelerated x86 driver, align the state descriptor of the x86 code
with the one used by the generic driver. This is needed to make the
library interface unified between all implementations.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---
 include/crypto/internal/poly1305.h |  4 ++--
 include/crypto/poly1305.h          | 18 +++++++++---------
 2 files changed, 11 insertions(+), 11 deletions(-)

(limited to 'include')

diff --git a/include/crypto/internal/poly1305.h b/include/crypto/internal/poly1305.h
index cb58e61f73a7..04fa269e5534 100644
--- a/include/crypto/internal/poly1305.h
+++ b/include/crypto/internal/poly1305.h
@@ -46,10 +46,10 @@ unsigned int crypto_poly1305_setdesckey(struct poly1305_desc_ctx *dctx,
 {
 	if (!dctx->sset) {
 		if (!dctx->rset && srclen >= POLY1305_BLOCK_SIZE) {
-			poly1305_core_setkey(&dctx->r, src);
+			poly1305_core_setkey(dctx->r, src);
 			src += POLY1305_BLOCK_SIZE;
 			srclen -= POLY1305_BLOCK_SIZE;
-			dctx->rset = true;
+			dctx->rset = 1;
 		}
 		if (srclen >= POLY1305_BLOCK_SIZE) {
 			dctx->s[0] = get_unaligned_le32(src +  0);
diff --git a/include/crypto/poly1305.h b/include/crypto/poly1305.h
index f5a4319c2a1f..36b5886cb50c 100644
--- a/include/crypto/poly1305.h
+++ b/include/crypto/poly1305.h
@@ -22,20 +22,20 @@ struct poly1305_state {
 };
 
 struct poly1305_desc_ctx {
-	/* key */
-	struct poly1305_key r;
-	/* finalize key */
-	u32 s[4];
-	/* accumulator */
-	struct poly1305_state h;
 	/* partial buffer */
 	u8 buf[POLY1305_BLOCK_SIZE];
 	/* bytes used in partial buffer */
 	unsigned int buflen;
-	/* r key has been set */
-	bool rset;
-	/* s key has been set */
+	/* how many keys have been set in r[] */
+	unsigned short rset;
+	/* whether s[] has been set */
 	bool sset;
+	/* finalize key */
+	u32 s[4];
+	/* accumulator */
+	struct poly1305_state h;
+	/* key */
+	struct poly1305_key r[1];
 };
 
 #endif
-- 
cgit v1.2.3


From a1d93064094cc5e24d64e35cf093e7191d0c9344 Mon Sep 17 00:00:00 2001
From: Ard Biesheuvel <ardb@kernel.org>
Date: Fri, 8 Nov 2019 13:22:21 +0100
Subject: crypto: poly1305 - expose init/update/final library interface

Expose the existing generic Poly1305 code via a init/update/final
library interface so that callers are not required to go through
the crypto API's shash abstraction to access it. At the same time,
make some preparations so that the library implementation can be
superseded by an accelerated arch-specific version in the future.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---
 include/crypto/poly1305.h | 38 +++++++++++++++++++++++++++++++++++++-
 1 file changed, 37 insertions(+), 1 deletion(-)

(limited to 'include')

diff --git a/include/crypto/poly1305.h b/include/crypto/poly1305.h
index 36b5886cb50c..74c6e1cd73ee 100644
--- a/include/crypto/poly1305.h
+++ b/include/crypto/poly1305.h
@@ -35,7 +35,43 @@ struct poly1305_desc_ctx {
 	/* accumulator */
 	struct poly1305_state h;
 	/* key */
-	struct poly1305_key r[1];
+	struct poly1305_key r[CONFIG_CRYPTO_LIB_POLY1305_RSIZE];
 };
 
+void poly1305_init_arch(struct poly1305_desc_ctx *desc, const u8 *key);
+void poly1305_init_generic(struct poly1305_desc_ctx *desc, const u8 *key);
+
+static inline void poly1305_init(struct poly1305_desc_ctx *desc, const u8 *key)
+{
+	if (IS_ENABLED(CONFIG_CRYPTO_ARCH_HAVE_LIB_POLY1305))
+		poly1305_init_arch(desc, key);
+	else
+		poly1305_init_generic(desc, key);
+}
+
+void poly1305_update_arch(struct poly1305_desc_ctx *desc, const u8 *src,
+			  unsigned int nbytes);
+void poly1305_update_generic(struct poly1305_desc_ctx *desc, const u8 *src,
+			     unsigned int nbytes);
+
+static inline void poly1305_update(struct poly1305_desc_ctx *desc,
+				   const u8 *src, unsigned int nbytes)
+{
+	if (IS_ENABLED(CONFIG_CRYPTO_ARCH_HAVE_LIB_POLY1305))
+		poly1305_update_arch(desc, src, nbytes);
+	else
+		poly1305_update_generic(desc, src, nbytes);
+}
+
+void poly1305_final_arch(struct poly1305_desc_ctx *desc, u8 *digest);
+void poly1305_final_generic(struct poly1305_desc_ctx *desc, u8 *digest);
+
+static inline void poly1305_final(struct poly1305_desc_ctx *desc, u8 *digest)
+{
+	if (IS_ENABLED(CONFIG_CRYPTO_ARCH_HAVE_LIB_POLY1305))
+		poly1305_final_arch(desc, digest);
+	else
+		poly1305_final_generic(desc, digest);
+}
+
 #endif
-- 
cgit v1.2.3


From 1b2c6a5120489d41c8ea3b8dacd0b4586289b158 Mon Sep 17 00:00:00 2001
From: Ard Biesheuvel <ardb@kernel.org>
Date: Fri, 8 Nov 2019 13:22:22 +0100
Subject: crypto: x86/poly1305 - depend on generic library not generic shash

Remove the dependency on the generic Poly1305 driver. Instead, depend
on the generic library so that we only reuse code without pulling in
the generic skcipher implementation as well.

While at it, remove the logic that prefers the non-SIMD path for short
inputs - this is no longer necessary after recent FPU handling changes
on x86.

Since this removes the last remaining user of the routines exported
by the generic shash driver, unexport them and make them static.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---
 include/crypto/internal/poly1305.h | 9 ---------
 1 file changed, 9 deletions(-)

(limited to 'include')

diff --git a/include/crypto/internal/poly1305.h b/include/crypto/internal/poly1305.h
index 04fa269e5534..479b0cab2a1a 100644
--- a/include/crypto/internal/poly1305.h
+++ b/include/crypto/internal/poly1305.h
@@ -10,8 +10,6 @@
 #include <linux/types.h>
 #include <crypto/poly1305.h>
 
-struct shash_desc;
-
 /*
  * Poly1305 core functions.  These implement the ε-almost-∆-universal hash
  * function underlying the Poly1305 MAC, i.e. they don't add an encrypted nonce
@@ -28,13 +26,6 @@ void poly1305_core_blocks(struct poly1305_state *state,
 			  unsigned int nblocks, u32 hibit);
 void poly1305_core_emit(const struct poly1305_state *state, void *dst);
 
-/* Crypto API helper functions for the Poly1305 MAC */
-int crypto_poly1305_init(struct shash_desc *desc);
-
-int crypto_poly1305_update(struct shash_desc *desc,
-			   const u8 *src, unsigned int srclen);
-int crypto_poly1305_final(struct shash_desc *desc, u8 *dst);
-
 /*
  * Poly1305 requires a unique key for each tag, which implies that we can't set
  * it on the tfm that gets accessed by multiple users simultaneously. Instead we
-- 
cgit v1.2.3


From 66d7fb94e4ffe5acc589e0b2b4710aecc1f07a28 Mon Sep 17 00:00:00 2001
From: "Jason A. Donenfeld" <Jason@zx2c4.com>
Date: Fri, 8 Nov 2019 13:22:28 +0100
Subject: crypto: blake2s - generic C library implementation and selftest

The C implementation was originally based on Samuel Neves' public
domain reference implementation but has since been heavily modified
for the kernel. We're able to do compile-time optimizations by moving
some scaffolding around the final function into the header file.

Information: https://blake2.net/

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Samuel Neves <sneves@dei.uc.pt>
Co-developed-by: Samuel Neves <sneves@dei.uc.pt>
[ardb: - move from lib/zinc to lib/crypto
       - remove simd handling
       - rewrote selftest for better coverage
       - use fixed digest length for blake2s_hmac() and rename to
         blake2s256_hmac() ]
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---
 include/crypto/blake2s.h          | 106 ++++++++++++++++++++++++++++++++++++++
 include/crypto/internal/blake2s.h |  19 +++++++
 2 files changed, 125 insertions(+)
 create mode 100644 include/crypto/blake2s.h
 create mode 100644 include/crypto/internal/blake2s.h

(limited to 'include')

diff --git a/include/crypto/blake2s.h b/include/crypto/blake2s.h
new file mode 100644
index 000000000000..b471deac28ff
--- /dev/null
+++ b/include/crypto/blake2s.h
@@ -0,0 +1,106 @@
+/* SPDX-License-Identifier: GPL-2.0 OR MIT */
+/*
+ * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+ */
+
+#ifndef BLAKE2S_H
+#define BLAKE2S_H
+
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+
+#include <asm/bug.h>
+
+enum blake2s_lengths {
+	BLAKE2S_BLOCK_SIZE = 64,
+	BLAKE2S_HASH_SIZE = 32,
+	BLAKE2S_KEY_SIZE = 32,
+
+	BLAKE2S_128_HASH_SIZE = 16,
+	BLAKE2S_160_HASH_SIZE = 20,
+	BLAKE2S_224_HASH_SIZE = 28,
+	BLAKE2S_256_HASH_SIZE = 32,
+};
+
+struct blake2s_state {
+	u32 h[8];
+	u32 t[2];
+	u32 f[2];
+	u8 buf[BLAKE2S_BLOCK_SIZE];
+	unsigned int buflen;
+	unsigned int outlen;
+};
+
+enum blake2s_iv {
+	BLAKE2S_IV0 = 0x6A09E667UL,
+	BLAKE2S_IV1 = 0xBB67AE85UL,
+	BLAKE2S_IV2 = 0x3C6EF372UL,
+	BLAKE2S_IV3 = 0xA54FF53AUL,
+	BLAKE2S_IV4 = 0x510E527FUL,
+	BLAKE2S_IV5 = 0x9B05688CUL,
+	BLAKE2S_IV6 = 0x1F83D9ABUL,
+	BLAKE2S_IV7 = 0x5BE0CD19UL,
+};
+
+void blake2s_update(struct blake2s_state *state, const u8 *in, size_t inlen);
+void blake2s_final(struct blake2s_state *state, u8 *out);
+
+static inline void blake2s_init_param(struct blake2s_state *state,
+				      const u32 param)
+{
+	*state = (struct blake2s_state){{
+		BLAKE2S_IV0 ^ param,
+		BLAKE2S_IV1,
+		BLAKE2S_IV2,
+		BLAKE2S_IV3,
+		BLAKE2S_IV4,
+		BLAKE2S_IV5,
+		BLAKE2S_IV6,
+		BLAKE2S_IV7,
+	}};
+}
+
+static inline void blake2s_init(struct blake2s_state *state,
+				const size_t outlen)
+{
+	blake2s_init_param(state, 0x01010000 | outlen);
+	state->outlen = outlen;
+}
+
+static inline void blake2s_init_key(struct blake2s_state *state,
+				    const size_t outlen, const void *key,
+				    const size_t keylen)
+{
+	WARN_ON(IS_ENABLED(DEBUG) && (!outlen || outlen > BLAKE2S_HASH_SIZE ||
+		!key || !keylen || keylen > BLAKE2S_KEY_SIZE));
+
+	blake2s_init_param(state, 0x01010000 | keylen << 8 | outlen);
+	memcpy(state->buf, key, keylen);
+	state->buflen = BLAKE2S_BLOCK_SIZE;
+	state->outlen = outlen;
+}
+
+static inline void blake2s(u8 *out, const u8 *in, const u8 *key,
+			   const size_t outlen, const size_t inlen,
+			   const size_t keylen)
+{
+	struct blake2s_state state;
+
+	WARN_ON(IS_ENABLED(DEBUG) && ((!in && inlen > 0) || !out || !outlen ||
+		outlen > BLAKE2S_HASH_SIZE || keylen > BLAKE2S_KEY_SIZE ||
+		(!key && keylen)));
+
+	if (keylen)
+		blake2s_init_key(&state, outlen, key, keylen);
+	else
+		blake2s_init(&state, outlen);
+
+	blake2s_update(&state, in, inlen);
+	blake2s_final(&state, out);
+}
+
+void blake2s256_hmac(u8 *out, const u8 *in, const u8 *key, const size_t inlen,
+		     const size_t keylen);
+
+#endif /* BLAKE2S_H */
diff --git a/include/crypto/internal/blake2s.h b/include/crypto/internal/blake2s.h
new file mode 100644
index 000000000000..941693effc7d
--- /dev/null
+++ b/include/crypto/internal/blake2s.h
@@ -0,0 +1,19 @@
+/* SPDX-License-Identifier: GPL-2.0 OR MIT */
+
+#ifndef BLAKE2S_INTERNAL_H
+#define BLAKE2S_INTERNAL_H
+
+#include <crypto/blake2s.h>
+
+void blake2s_compress_generic(struct blake2s_state *state,const u8 *block,
+			      size_t nblocks, const u32 inc);
+
+void blake2s_compress_arch(struct blake2s_state *state,const u8 *block,
+			   size_t nblocks, const u32 inc);
+
+static inline void blake2s_set_lastblock(struct blake2s_state *state)
+{
+	state->f[0] = -1;
+}
+
+#endif /* BLAKE2S_INTERNAL_H */
-- 
cgit v1.2.3


From 7f9b0880925f1f9d7d59504ea0892d2ae9cfc233 Mon Sep 17 00:00:00 2001
From: Ard Biesheuvel <ardb@kernel.org>
Date: Fri, 8 Nov 2019 13:22:30 +0100
Subject: crypto: blake2s - implement generic shash driver

Wire up our newly added Blake2s implementation via the shash API.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---
 include/crypto/internal/blake2s.h | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'include')

diff --git a/include/crypto/internal/blake2s.h b/include/crypto/internal/blake2s.h
index 941693effc7d..74ff77032e52 100644
--- a/include/crypto/internal/blake2s.h
+++ b/include/crypto/internal/blake2s.h
@@ -5,6 +5,11 @@
 
 #include <crypto/blake2s.h>
 
+struct blake2s_tfm_ctx {
+	u8 key[BLAKE2S_KEY_SIZE];
+	unsigned int keylen;
+};
+
 void blake2s_compress_generic(struct blake2s_state *state,const u8 *block,
 			      size_t nblocks, const u32 inc);
 
-- 
cgit v1.2.3


From 0ed42a6f431e930b2e8fae21955406e09fe75d70 Mon Sep 17 00:00:00 2001
From: "Jason A. Donenfeld" <Jason@zx2c4.com>
Date: Fri, 8 Nov 2019 13:22:32 +0100
Subject: crypto: curve25519 - generic C library implementations

This contains two formally verified C implementations of the Curve25519
scalar multiplication function, one for 32-bit systems, and one for
64-bit systems whose compiler supports efficient 128-bit integer types.
Not only are these implementations formally verified, but they are also
the fastest available C implementations. They have been modified to be
friendly to kernel space and to be generally less horrendous looking,
but still an effort has been made to retain their formally verified
characteristic, and so the C might look slightly unidiomatic.

The 64-bit version comes from HACL*: https://github.com/project-everest/hacl-star
The 32-bit version comes from Fiat: https://github.com/mit-plv/fiat-crypto

Information: https://cr.yp.to/ecdh.html

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
[ardb: - move from lib/zinc to lib/crypto
       - replace .c #includes with Kconfig based object selection
       - drop simd handling and simplify support for per-arch versions ]
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---
 include/crypto/curve25519.h | 71 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 71 insertions(+)
 create mode 100644 include/crypto/curve25519.h

(limited to 'include')

diff --git a/include/crypto/curve25519.h b/include/crypto/curve25519.h
new file mode 100644
index 000000000000..4e6dc840b159
--- /dev/null
+++ b/include/crypto/curve25519.h
@@ -0,0 +1,71 @@
+/* SPDX-License-Identifier: GPL-2.0 OR MIT */
+/*
+ * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+ */
+
+#ifndef CURVE25519_H
+#define CURVE25519_H
+
+#include <crypto/algapi.h> // For crypto_memneq.
+#include <linux/types.h>
+#include <linux/random.h>
+
+enum curve25519_lengths {
+	CURVE25519_KEY_SIZE = 32
+};
+
+extern const u8 curve25519_null_point[];
+extern const u8 curve25519_base_point[];
+
+void curve25519_generic(u8 out[CURVE25519_KEY_SIZE],
+			const u8 scalar[CURVE25519_KEY_SIZE],
+			const u8 point[CURVE25519_KEY_SIZE]);
+
+void curve25519_arch(u8 out[CURVE25519_KEY_SIZE],
+		     const u8 scalar[CURVE25519_KEY_SIZE],
+		     const u8 point[CURVE25519_KEY_SIZE]);
+
+void curve25519_base_arch(u8 pub[CURVE25519_KEY_SIZE],
+			  const u8 secret[CURVE25519_KEY_SIZE]);
+
+static inline
+bool __must_check curve25519(u8 mypublic[CURVE25519_KEY_SIZE],
+			     const u8 secret[CURVE25519_KEY_SIZE],
+			     const u8 basepoint[CURVE25519_KEY_SIZE])
+{
+	if (IS_ENABLED(CONFIG_CRYPTO_ARCH_HAVE_LIB_CURVE25519))
+		curve25519_arch(mypublic, secret, basepoint);
+	else
+		curve25519_generic(mypublic, secret, basepoint);
+	return crypto_memneq(mypublic, curve25519_null_point,
+			     CURVE25519_KEY_SIZE);
+}
+
+static inline bool
+__must_check curve25519_generate_public(u8 pub[CURVE25519_KEY_SIZE],
+					const u8 secret[CURVE25519_KEY_SIZE])
+{
+	if (unlikely(!crypto_memneq(secret, curve25519_null_point,
+				    CURVE25519_KEY_SIZE)))
+		return false;
+
+	if (IS_ENABLED(CONFIG_CRYPTO_ARCH_HAVE_LIB_CURVE25519))
+		curve25519_base_arch(pub, secret);
+	else
+		curve25519_generic(pub, secret, curve25519_base_point);
+	return crypto_memneq(pub, curve25519_null_point, CURVE25519_KEY_SIZE);
+}
+
+static inline void curve25519_clamp_secret(u8 secret[CURVE25519_KEY_SIZE])
+{
+	secret[0] &= 248;
+	secret[31] = (secret[31] & 127) | 64;
+}
+
+static inline void curve25519_generate_secret(u8 secret[CURVE25519_KEY_SIZE])
+{
+	get_random_bytes_wait(secret, CURVE25519_KEY_SIZE);
+	curve25519_clamp_secret(secret);
+}
+
+#endif /* CURVE25519_H */
-- 
cgit v1.2.3


From ed20078b7e3331e82828be357147af6a3282e4ce Mon Sep 17 00:00:00 2001
From: Ard Biesheuvel <ardb@kernel.org>
Date: Fri, 8 Nov 2019 13:22:39 +0100
Subject: crypto: chacha20poly1305 - import construction and selftest from Zinc

This incorporates the chacha20poly1305 from the Zinc library, retaining
the library interface, but replacing the implementation with calls into
the code that already existed in the kernel's crypto API.

Note that this library API does not implement RFC7539 fully, given that
it is limited to 64-bit nonces. (The 96-bit nonce version that was part
of the selftest only has been removed, along with the 96-bit nonce test
vectors that only tested the selftest but not the actual library itself)

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---
 include/crypto/chacha20poly1305.h | 37 +++++++++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)
 create mode 100644 include/crypto/chacha20poly1305.h

(limited to 'include')

diff --git a/include/crypto/chacha20poly1305.h b/include/crypto/chacha20poly1305.h
new file mode 100644
index 000000000000..ad3b1de58df8
--- /dev/null
+++ b/include/crypto/chacha20poly1305.h
@@ -0,0 +1,37 @@
+/* SPDX-License-Identifier: GPL-2.0 OR MIT */
+/*
+ * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+ */
+
+#ifndef __CHACHA20POLY1305_H
+#define __CHACHA20POLY1305_H
+
+#include <linux/types.h>
+
+enum chacha20poly1305_lengths {
+	XCHACHA20POLY1305_NONCE_SIZE = 24,
+	CHACHA20POLY1305_KEY_SIZE = 32,
+	CHACHA20POLY1305_AUTHTAG_SIZE = 16
+};
+
+void chacha20poly1305_encrypt(u8 *dst, const u8 *src, const size_t src_len,
+			      const u8 *ad, const size_t ad_len,
+			      const u64 nonce,
+			      const u8 key[CHACHA20POLY1305_KEY_SIZE]);
+
+bool __must_check
+chacha20poly1305_decrypt(u8 *dst, const u8 *src, const size_t src_len,
+			 const u8 *ad, const size_t ad_len, const u64 nonce,
+			 const u8 key[CHACHA20POLY1305_KEY_SIZE]);
+
+void xchacha20poly1305_encrypt(u8 *dst, const u8 *src, const size_t src_len,
+			       const u8 *ad, const size_t ad_len,
+			       const u8 nonce[XCHACHA20POLY1305_NONCE_SIZE],
+			       const u8 key[CHACHA20POLY1305_KEY_SIZE]);
+
+bool __must_check xchacha20poly1305_decrypt(
+	u8 *dst, const u8 *src, const size_t src_len, const u8 *ad,
+	const size_t ad_len, const u8 nonce[XCHACHA20POLY1305_NONCE_SIZE],
+	const u8 key[CHACHA20POLY1305_KEY_SIZE]);
+
+#endif /* __CHACHA20POLY1305_H */
-- 
cgit v1.2.3


From d95312a3ccc0cd544d374be2fc45aeaa803e5fd9 Mon Sep 17 00:00:00 2001
From: Ard Biesheuvel <ardb@kernel.org>
Date: Fri, 8 Nov 2019 13:22:40 +0100
Subject: crypto: lib/chacha20poly1305 - reimplement crypt_from_sg() routine

Reimplement the library routines to perform chacha20poly1305 en/decryption
on scatterlists, without [ab]using the [deprecated] blkcipher interface,
which is rather heavyweight and does things we don't really need.

Instead, we use the sg_miter API in a novel and clever way, to iterate
over the scatterlist in-place (i.e., source == destination, which is the
only way this library is expected to be used). That way, we don't have to
iterate over two scatterlists in parallel.

Another optimization is that, instead of relying on the blkcipher walker
to present the input in suitable chunks, we recognize that ChaCha is a
streamcipher, and so we can simply deal with partial blocks by keeping a
block of cipherstream on the stack and use crypto_xor() to mix it with
the in/output.

Finally, we omit the scatterwalk_and_copy() call if the last element of
the scatterlist covers the MAC as well (which is the common case),
avoiding the need to walk the scatterlist and kmap() the page twice.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---
 include/crypto/chacha20poly1305.h | 11 +++++++++++
 1 file changed, 11 insertions(+)

(limited to 'include')

diff --git a/include/crypto/chacha20poly1305.h b/include/crypto/chacha20poly1305.h
index ad3b1de58df8..234ee28078ef 100644
--- a/include/crypto/chacha20poly1305.h
+++ b/include/crypto/chacha20poly1305.h
@@ -7,6 +7,7 @@
 #define __CHACHA20POLY1305_H
 
 #include <linux/types.h>
+#include <linux/scatterlist.h>
 
 enum chacha20poly1305_lengths {
 	XCHACHA20POLY1305_NONCE_SIZE = 24,
@@ -34,4 +35,14 @@ bool __must_check xchacha20poly1305_decrypt(
 	const size_t ad_len, const u8 nonce[XCHACHA20POLY1305_NONCE_SIZE],
 	const u8 key[CHACHA20POLY1305_KEY_SIZE]);
 
+bool chacha20poly1305_encrypt_sg_inplace(struct scatterlist *src, size_t src_len,
+					 const u8 *ad, const size_t ad_len,
+					 const u64 nonce,
+					 const u8 key[CHACHA20POLY1305_KEY_SIZE]);
+
+bool chacha20poly1305_decrypt_sg_inplace(struct scatterlist *src, size_t src_len,
+					 const u8 *ad, const size_t ad_len,
+					 const u64 nonce,
+					 const u8 key[CHACHA20POLY1305_KEY_SIZE]);
+
 #endif /* __CHACHA20POLY1305_H */
-- 
cgit v1.2.3


From d63007eb954e425f45766482813738f41db9af45 Mon Sep 17 00:00:00 2001
From: Ard Biesheuvel <ardb@kernel.org>
Date: Sat, 9 Nov 2019 18:09:53 +0100
Subject: crypto: ablkcipher - remove deprecated and unused ablkcipher support

Now that all users of the deprecated ablkcipher interface have been
moved to the skcipher interface, ablkcipher is no longer used and
can be removed.

Reviewed-by: Eric Biggers <ebiggers@kernel.org>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---
 include/crypto/aead.h              |   2 +-
 include/crypto/algapi.h            |  75 -------
 include/crypto/engine.h            |   4 -
 include/crypto/hash.h              |   2 +-
 include/crypto/internal/des.h      |  12 -
 include/crypto/internal/skcipher.h |  20 --
 include/crypto/skcipher.h          |   6 -
 include/linux/crypto.h             | 435 -------------------------------------
 8 files changed, 2 insertions(+), 554 deletions(-)

(limited to 'include')

diff --git a/include/crypto/aead.h b/include/crypto/aead.h
index 3c245b1859e7..a3bdadf6221e 100644
--- a/include/crypto/aead.h
+++ b/include/crypto/aead.h
@@ -321,7 +321,7 @@ int crypto_aead_encrypt(struct aead_request *req);
 
 /**
  * crypto_aead_decrypt() - decrypt ciphertext
- * @req: reference to the ablkcipher_request handle that holds all information
+ * @req: reference to the aead_request handle that holds all information
  *	 needed to perform the cipher operation
  *
  * Decrypt ciphertext data using the aead_request handle. That data structure
diff --git a/include/crypto/algapi.h b/include/crypto/algapi.h
index cadc5257c612..5cd846defdd6 100644
--- a/include/crypto/algapi.h
+++ b/include/crypto/algapi.h
@@ -85,25 +85,6 @@ struct scatter_walk {
 	unsigned int offset;
 };
 
-struct ablkcipher_walk {
-	struct {
-		struct page *page;
-		unsigned int offset;
-	} src, dst;
-
-	struct scatter_walk	in;
-	unsigned int		nbytes;
-	struct scatter_walk	out;
-	unsigned int		total;
-	struct list_head	buffers;
-	u8			*iv_buffer;
-	u8			*iv;
-	int			flags;
-	unsigned int		blocksize;
-};
-
-extern const struct crypto_type crypto_ablkcipher_type;
-
 void crypto_mod_put(struct crypto_alg *alg);
 
 int crypto_register_template(struct crypto_template *tmpl);
@@ -202,12 +183,6 @@ static inline void crypto_xor_cpy(u8 *dst, const u8 *src1, const u8 *src2,
 	}
 }
 
-int ablkcipher_walk_done(struct ablkcipher_request *req,
-			 struct ablkcipher_walk *walk, int err);
-int ablkcipher_walk_phys(struct ablkcipher_request *req,
-			 struct ablkcipher_walk *walk);
-void __ablkcipher_walk_complete(struct ablkcipher_walk *walk);
-
 static inline void *crypto_tfm_ctx_aligned(struct crypto_tfm *tfm)
 {
 	return PTR_ALIGN(crypto_tfm_ctx(tfm),
@@ -225,22 +200,6 @@ static inline void *crypto_instance_ctx(struct crypto_instance *inst)
 	return inst->__ctx;
 }
 
-static inline struct ablkcipher_alg *crypto_ablkcipher_alg(
-	struct crypto_ablkcipher *tfm)
-{
-	return &crypto_ablkcipher_tfm(tfm)->__crt_alg->cra_ablkcipher;
-}
-
-static inline void *crypto_ablkcipher_ctx(struct crypto_ablkcipher *tfm)
-{
-	return crypto_tfm_ctx(&tfm->base);
-}
-
-static inline void *crypto_ablkcipher_ctx_aligned(struct crypto_ablkcipher *tfm)
-{
-	return crypto_tfm_ctx_aligned(&tfm->base);
-}
-
 static inline struct crypto_cipher *crypto_spawn_cipher(
 	struct crypto_spawn *spawn)
 {
@@ -255,23 +214,6 @@ static inline struct cipher_alg *crypto_cipher_alg(struct crypto_cipher *tfm)
 	return &crypto_cipher_tfm(tfm)->__crt_alg->cra_cipher;
 }
 
-static inline void ablkcipher_walk_init(struct ablkcipher_walk *walk,
-					struct scatterlist *dst,
-					struct scatterlist *src,
-					unsigned int nbytes)
-{
-	walk->in.sg = src;
-	walk->out.sg = dst;
-	walk->total = nbytes;
-	INIT_LIST_HEAD(&walk->buffers);
-}
-
-static inline void ablkcipher_walk_complete(struct ablkcipher_walk *walk)
-{
-	if (unlikely(!list_empty(&walk->buffers)))
-		__ablkcipher_walk_complete(walk);
-}
-
 static inline struct crypto_async_request *crypto_get_backlog(
 	struct crypto_queue *queue)
 {
@@ -279,23 +221,6 @@ static inline struct crypto_async_request *crypto_get_backlog(
 	       container_of(queue->backlog, struct crypto_async_request, list);
 }
 
-static inline int ablkcipher_enqueue_request(struct crypto_queue *queue,
-					     struct ablkcipher_request *request)
-{
-	return crypto_enqueue_request(queue, &request->base);
-}
-
-static inline struct ablkcipher_request *ablkcipher_dequeue_request(
-	struct crypto_queue *queue)
-{
-	return ablkcipher_request_cast(crypto_dequeue_request(queue));
-}
-
-static inline void *ablkcipher_request_ctx(struct ablkcipher_request *req)
-{
-	return req->__ctx;
-}
-
 static inline struct crypto_alg *crypto_get_attr_alg(struct rtattr **tb,
 						     u32 type, u32 mask)
 {
diff --git a/include/crypto/engine.h b/include/crypto/engine.h
index 84c708bba00b..e29cd67f93c7 100644
--- a/include/crypto/engine.h
+++ b/include/crypto/engine.h
@@ -83,8 +83,6 @@ struct crypto_engine_ctx {
 	struct crypto_engine_op op;
 };
 
-int crypto_transfer_ablkcipher_request_to_engine(struct crypto_engine *engine,
-						 struct ablkcipher_request *req);
 int crypto_transfer_aead_request_to_engine(struct crypto_engine *engine,
 					   struct aead_request *req);
 int crypto_transfer_akcipher_request_to_engine(struct crypto_engine *engine,
@@ -93,8 +91,6 @@ int crypto_transfer_hash_request_to_engine(struct crypto_engine *engine,
 					       struct ahash_request *req);
 int crypto_transfer_skcipher_request_to_engine(struct crypto_engine *engine,
 					       struct skcipher_request *req);
-void crypto_finalize_ablkcipher_request(struct crypto_engine *engine,
-					struct ablkcipher_request *req, int err);
 void crypto_finalize_aead_request(struct crypto_engine *engine,
 				  struct aead_request *req, int err);
 void crypto_finalize_akcipher_request(struct crypto_engine *engine,
diff --git a/include/crypto/hash.h b/include/crypto/hash.h
index d52b95b75ae4..fe7f73bad1e2 100644
--- a/include/crypto/hash.h
+++ b/include/crypto/hash.h
@@ -227,7 +227,7 @@ struct crypto_shash {
  * CRYPTO_ALG_TYPE_AHASH (listed as type "ahash" in /proc/crypto)
  *
  * The asynchronous cipher operation discussion provided for the
- * CRYPTO_ALG_TYPE_ABLKCIPHER API applies here as well.
+ * CRYPTO_ALG_TYPE_SKCIPHER API applies here as well.
  */
 
 static inline struct crypto_ahash *__crypto_ahash_cast(struct crypto_tfm *tfm)
diff --git a/include/crypto/internal/des.h b/include/crypto/internal/des.h
index 81ea1a425e9c..f62a2bb1866b 100644
--- a/include/crypto/internal/des.h
+++ b/include/crypto/internal/des.h
@@ -117,18 +117,6 @@ static inline int verify_skcipher_des3_key(struct crypto_skcipher *tfm,
 	return crypto_des3_ede_verify_key(crypto_skcipher_tfm(tfm), key);
 }
 
-static inline int verify_ablkcipher_des_key(struct crypto_ablkcipher *tfm,
-					    const u8 *key)
-{
-	return crypto_des_verify_key(crypto_ablkcipher_tfm(tfm), key);
-}
-
-static inline int verify_ablkcipher_des3_key(struct crypto_ablkcipher *tfm,
-					     const u8 *key)
-{
-	return crypto_des3_ede_verify_key(crypto_ablkcipher_tfm(tfm), key);
-}
-
 static inline int verify_aead_des_key(struct crypto_aead *tfm, const u8 *key,
 				      int keylen)
 {
diff --git a/include/crypto/internal/skcipher.h b/include/crypto/internal/skcipher.h
index 454e898d5f5f..921c409fe1b1 100644
--- a/include/crypto/internal/skcipher.h
+++ b/include/crypto/internal/skcipher.h
@@ -153,17 +153,6 @@ static inline void skcipher_walk_abort(struct skcipher_walk *walk)
 	skcipher_walk_done(walk, -ECANCELED);
 }
 
-static inline void ablkcipher_request_complete(struct ablkcipher_request *req,
-					       int err)
-{
-	req->base.complete(&req->base, err);
-}
-
-static inline u32 ablkcipher_request_flags(struct ablkcipher_request *req)
-{
-	return req->base.flags;
-}
-
 static inline void *crypto_skcipher_ctx(struct crypto_skcipher *tfm)
 {
 	return crypto_tfm_ctx(&tfm->base);
@@ -182,27 +171,18 @@ static inline u32 skcipher_request_flags(struct skcipher_request *req)
 static inline unsigned int crypto_skcipher_alg_min_keysize(
 	struct skcipher_alg *alg)
 {
-	if (alg->base.cra_ablkcipher.encrypt)
-		return alg->base.cra_ablkcipher.min_keysize;
-
 	return alg->min_keysize;
 }
 
 static inline unsigned int crypto_skcipher_alg_max_keysize(
 	struct skcipher_alg *alg)
 {
-	if (alg->base.cra_ablkcipher.encrypt)
-		return alg->base.cra_ablkcipher.max_keysize;
-
 	return alg->max_keysize;
 }
 
 static inline unsigned int crypto_skcipher_alg_walksize(
 	struct skcipher_alg *alg)
 {
-	if (alg->base.cra_ablkcipher.encrypt)
-		return alg->base.cra_blocksize;
-
 	return alg->walksize;
 }
 
diff --git a/include/crypto/skcipher.h b/include/crypto/skcipher.h
index 8c5a31e810da..b4655d91661f 100644
--- a/include/crypto/skcipher.h
+++ b/include/crypto/skcipher.h
@@ -241,9 +241,6 @@ static inline struct skcipher_alg *crypto_skcipher_alg(
 
 static inline unsigned int crypto_skcipher_alg_ivsize(struct skcipher_alg *alg)
 {
-	if (alg->base.cra_ablkcipher.encrypt)
-		return alg->base.cra_ablkcipher.ivsize;
-
 	return alg->ivsize;
 }
 
@@ -286,9 +283,6 @@ static inline unsigned int crypto_skcipher_blocksize(
 static inline unsigned int crypto_skcipher_alg_chunksize(
 	struct skcipher_alg *alg)
 {
-	if (alg->base.cra_ablkcipher.encrypt)
-		return alg->base.cra_blocksize;
-
 	return alg->chunksize;
 }
 
diff --git a/include/linux/crypto.h b/include/linux/crypto.h
index e9f2c6b5d800..23365a9d062e 100644
--- a/include/linux/crypto.h
+++ b/include/linux/crypto.h
@@ -41,7 +41,6 @@
 #define CRYPTO_ALG_TYPE_CIPHER		0x00000001
 #define CRYPTO_ALG_TYPE_COMPRESS	0x00000002
 #define CRYPTO_ALG_TYPE_AEAD		0x00000003
-#define CRYPTO_ALG_TYPE_ABLKCIPHER	0x00000005
 #define CRYPTO_ALG_TYPE_SKCIPHER	0x00000005
 #define CRYPTO_ALG_TYPE_KPP		0x00000008
 #define CRYPTO_ALG_TYPE_ACOMPRESS	0x0000000a
@@ -137,7 +136,6 @@
 #define CRYPTO_MINALIGN_ATTR __attribute__ ((__aligned__(CRYPTO_MINALIGN)))
 
 struct scatterlist;
-struct crypto_ablkcipher;
 struct crypto_async_request;
 struct crypto_tfm;
 struct crypto_type;
@@ -160,19 +158,6 @@ struct crypto_async_request {
 	u32 flags;
 };
 
-struct ablkcipher_request {
-	struct crypto_async_request base;
-
-	unsigned int nbytes;
-
-	void *info;
-
-	struct scatterlist *src;
-	struct scatterlist *dst;
-
-	void *__ctx[] CRYPTO_MINALIGN_ATTR;
-};
-
 /**
  * DOC: Block Cipher Algorithm Definitions
  *
@@ -180,57 +165,6 @@ struct ablkcipher_request {
  * managed via crypto_register_alg() and crypto_unregister_alg().
  */
 
-/**
- * struct ablkcipher_alg - asynchronous block cipher definition
- * @min_keysize: Minimum key size supported by the transformation. This is the
- *		 smallest key length supported by this transformation algorithm.
- *		 This must be set to one of the pre-defined values as this is
- *		 not hardware specific. Possible values for this field can be
- *		 found via git grep "_MIN_KEY_SIZE" include/crypto/
- * @max_keysize: Maximum key size supported by the transformation. This is the
- *		 largest key length supported by this transformation algorithm.
- *		 This must be set to one of the pre-defined values as this is
- *		 not hardware specific. Possible values for this field can be
- *		 found via git grep "_MAX_KEY_SIZE" include/crypto/
- * @setkey: Set key for the transformation. This function is used to either
- *	    program a supplied key into the hardware or store the key in the
- *	    transformation context for programming it later. Note that this
- *	    function does modify the transformation context. This function can
- *	    be called multiple times during the existence of the transformation
- *	    object, so one must make sure the key is properly reprogrammed into
- *	    the hardware. This function is also responsible for checking the key
- *	    length for validity. In case a software fallback was put in place in
- *	    the @cra_init call, this function might need to use the fallback if
- *	    the algorithm doesn't support all of the key sizes.
- * @encrypt: Encrypt a scatterlist of blocks. This function is used to encrypt
- *	     the supplied scatterlist containing the blocks of data. The crypto
- *	     API consumer is responsible for aligning the entries of the
- *	     scatterlist properly and making sure the chunks are correctly
- *	     sized. In case a software fallback was put in place in the
- *	     @cra_init call, this function might need to use the fallback if
- *	     the algorithm doesn't support all of the key sizes. In case the
- *	     key was stored in transformation context, the key might need to be
- *	     re-programmed into the hardware in this function. This function
- *	     shall not modify the transformation context, as this function may
- *	     be called in parallel with the same transformation object.
- * @decrypt: Decrypt a single block. This is a reverse counterpart to @encrypt
- *	     and the conditions are exactly the same.
- * @ivsize: IV size applicable for transformation. The consumer must provide an
- *	    IV of exactly that size to perform the encrypt or decrypt operation.
- *
- * All fields except @ivsize are mandatory and must be filled.
- */
-struct ablkcipher_alg {
-	int (*setkey)(struct crypto_ablkcipher *tfm, const u8 *key,
-	              unsigned int keylen);
-	int (*encrypt)(struct ablkcipher_request *req);
-	int (*decrypt)(struct ablkcipher_request *req);
-
-	unsigned int min_keysize;
-	unsigned int max_keysize;
-	unsigned int ivsize;
-};
-
 /**
  * struct cipher_alg - single-block symmetric ciphers definition
  * @cia_min_keysize: Minimum key size supported by the transformation. This is
@@ -415,7 +349,6 @@ struct crypto_istat_rng {
 };
 #endif /* CONFIG_CRYPTO_STATS */
 
-#define cra_ablkcipher	cra_u.ablkcipher
 #define cra_cipher	cra_u.cipher
 #define cra_compress	cra_u.compress
 
@@ -483,8 +416,6 @@ struct crypto_istat_rng {
  * @cra_exit: Deinitialize the cryptographic transformation object. This is a
  *	      counterpart to @cra_init, used to remove various changes set in
  *	      @cra_init.
- * @cra_u.ablkcipher: Union member which contains an asynchronous block cipher
- *		      definition. See @struct @ablkcipher_alg.
  * @cra_u.cipher: Union member which contains a single-block symmetric cipher
  *		  definition. See @struct @cipher_alg.
  * @cra_u.compress: Union member which contains a (de)compression algorithm.
@@ -526,7 +457,6 @@ struct crypto_alg {
 	const struct crypto_type *cra_type;
 
 	union {
-		struct ablkcipher_alg ablkcipher;
 		struct cipher_alg cipher;
 		struct compress_alg compress;
 	} cra_u;
@@ -554,8 +484,6 @@ struct crypto_alg {
 #ifdef CONFIG_CRYPTO_STATS
 void crypto_stats_init(struct crypto_alg *alg);
 void crypto_stats_get(struct crypto_alg *alg);
-void crypto_stats_ablkcipher_encrypt(unsigned int nbytes, int ret, struct crypto_alg *alg);
-void crypto_stats_ablkcipher_decrypt(unsigned int nbytes, int ret, struct crypto_alg *alg);
 void crypto_stats_aead_encrypt(unsigned int cryptlen, struct crypto_alg *alg, int ret);
 void crypto_stats_aead_decrypt(unsigned int cryptlen, struct crypto_alg *alg, int ret);
 void crypto_stats_ahash_update(unsigned int nbytes, int ret, struct crypto_alg *alg);
@@ -578,10 +506,6 @@ static inline void crypto_stats_init(struct crypto_alg *alg)
 {}
 static inline void crypto_stats_get(struct crypto_alg *alg)
 {}
-static inline void crypto_stats_ablkcipher_encrypt(unsigned int nbytes, int ret, struct crypto_alg *alg)
-{}
-static inline void crypto_stats_ablkcipher_decrypt(unsigned int nbytes, int ret, struct crypto_alg *alg)
-{}
 static inline void crypto_stats_aead_encrypt(unsigned int cryptlen, struct crypto_alg *alg, int ret)
 {}
 static inline void crypto_stats_aead_decrypt(unsigned int cryptlen, struct crypto_alg *alg, int ret)
@@ -675,18 +599,6 @@ int crypto_has_alg(const char *name, u32 type, u32 mask);
  * crypto_free_*(), as well as the various helpers below.
  */
 
-struct ablkcipher_tfm {
-	int (*setkey)(struct crypto_ablkcipher *tfm, const u8 *key,
-	              unsigned int keylen);
-	int (*encrypt)(struct ablkcipher_request *req);
-	int (*decrypt)(struct ablkcipher_request *req);
-
-	struct crypto_ablkcipher *base;
-
-	unsigned int ivsize;
-	unsigned int reqsize;
-};
-
 struct cipher_tfm {
 	int (*cit_setkey)(struct crypto_tfm *tfm,
 	                  const u8 *key, unsigned int keylen);
@@ -703,7 +615,6 @@ struct compress_tfm {
 	                      u8 *dst, unsigned int *dlen);
 };
 
-#define crt_ablkcipher	crt_u.ablkcipher
 #define crt_cipher	crt_u.cipher
 #define crt_compress	crt_u.compress
 
@@ -712,7 +623,6 @@ struct crypto_tfm {
 	u32 crt_flags;
 	
 	union {
-		struct ablkcipher_tfm ablkcipher;
 		struct cipher_tfm cipher;
 		struct compress_tfm compress;
 	} crt_u;
@@ -724,10 +634,6 @@ struct crypto_tfm {
 	void *__crt_ctx[] CRYPTO_MINALIGN_ATTR;
 };
 
-struct crypto_ablkcipher {
-	struct crypto_tfm base;
-};
-
 struct crypto_cipher {
 	struct crypto_tfm base;
 };
@@ -835,347 +741,6 @@ static inline unsigned int crypto_tfm_ctx_alignment(void)
 	return __alignof__(tfm->__crt_ctx);
 }
 
-/*
- * API wrappers.
- */
-static inline struct crypto_ablkcipher *__crypto_ablkcipher_cast(
-	struct crypto_tfm *tfm)
-{
-	return (struct crypto_ablkcipher *)tfm;
-}
-
-/**
- * DOC: Asynchronous Block Cipher API
- *
- * Asynchronous block cipher API is used with the ciphers of type
- * CRYPTO_ALG_TYPE_ABLKCIPHER (listed as type "ablkcipher" in /proc/crypto).
- *
- * Asynchronous cipher operations imply that the function invocation for a
- * cipher request returns immediately before the completion of the operation.
- * The cipher request is scheduled as a separate kernel thread and therefore
- * load-balanced on the different CPUs via the process scheduler. To allow
- * the kernel crypto API to inform the caller about the completion of a cipher
- * request, the caller must provide a callback function. That function is
- * invoked with the cipher handle when the request completes.
- *
- * To support the asynchronous operation, additional information than just the
- * cipher handle must be supplied to the kernel crypto API. That additional
- * information is given by filling in the ablkcipher_request data structure.
- *
- * For the asynchronous block cipher API, the state is maintained with the tfm
- * cipher handle. A single tfm can be used across multiple calls and in
- * parallel. For asynchronous block cipher calls, context data supplied and
- * only used by the caller can be referenced the request data structure in
- * addition to the IV used for the cipher request. The maintenance of such
- * state information would be important for a crypto driver implementer to
- * have, because when calling the callback function upon completion of the
- * cipher operation, that callback function may need some information about
- * which operation just finished if it invoked multiple in parallel. This
- * state information is unused by the kernel crypto API.
- */
-
-static inline struct crypto_tfm *crypto_ablkcipher_tfm(
-	struct crypto_ablkcipher *tfm)
-{
-	return &tfm->base;
-}
-
-/**
- * crypto_free_ablkcipher() - zeroize and free cipher handle
- * @tfm: cipher handle to be freed
- */
-static inline void crypto_free_ablkcipher(struct crypto_ablkcipher *tfm)
-{
-	crypto_free_tfm(crypto_ablkcipher_tfm(tfm));
-}
-
-static inline struct ablkcipher_tfm *crypto_ablkcipher_crt(
-	struct crypto_ablkcipher *tfm)
-{
-	return &crypto_ablkcipher_tfm(tfm)->crt_ablkcipher;
-}
-
-/**
- * crypto_ablkcipher_ivsize() - obtain IV size
- * @tfm: cipher handle
- *
- * The size of the IV for the ablkcipher referenced by the cipher handle is
- * returned. This IV size may be zero if the cipher does not need an IV.
- *
- * Return: IV size in bytes
- */
-static inline unsigned int crypto_ablkcipher_ivsize(
-	struct crypto_ablkcipher *tfm)
-{
-	return crypto_ablkcipher_crt(tfm)->ivsize;
-}
-
-/**
- * crypto_ablkcipher_blocksize() - obtain block size of cipher
- * @tfm: cipher handle
- *
- * The block size for the ablkcipher referenced with the cipher handle is
- * returned. The caller may use that information to allocate appropriate
- * memory for the data returned by the encryption or decryption operation
- *
- * Return: block size of cipher
- */
-static inline unsigned int crypto_ablkcipher_blocksize(
-	struct crypto_ablkcipher *tfm)
-{
-	return crypto_tfm_alg_blocksize(crypto_ablkcipher_tfm(tfm));
-}
-
-static inline unsigned int crypto_ablkcipher_alignmask(
-	struct crypto_ablkcipher *tfm)
-{
-	return crypto_tfm_alg_alignmask(crypto_ablkcipher_tfm(tfm));
-}
-
-static inline u32 crypto_ablkcipher_get_flags(struct crypto_ablkcipher *tfm)
-{
-	return crypto_tfm_get_flags(crypto_ablkcipher_tfm(tfm));
-}
-
-static inline void crypto_ablkcipher_set_flags(struct crypto_ablkcipher *tfm,
-					       u32 flags)
-{
-	crypto_tfm_set_flags(crypto_ablkcipher_tfm(tfm), flags);
-}
-
-static inline void crypto_ablkcipher_clear_flags(struct crypto_ablkcipher *tfm,
-						 u32 flags)
-{
-	crypto_tfm_clear_flags(crypto_ablkcipher_tfm(tfm), flags);
-}
-
-/**
- * crypto_ablkcipher_setkey() - set key for cipher
- * @tfm: cipher handle
- * @key: buffer holding the key
- * @keylen: length of the key in bytes
- *
- * The caller provided key is set for the ablkcipher referenced by the cipher
- * handle.
- *
- * Note, the key length determines the cipher type. Many block ciphers implement
- * different cipher modes depending on the key size, such as AES-128 vs AES-192
- * vs. AES-256. When providing a 16 byte key for an AES cipher handle, AES-128
- * is performed.
- *
- * Return: 0 if the setting of the key was successful; < 0 if an error occurred
- */
-static inline int crypto_ablkcipher_setkey(struct crypto_ablkcipher *tfm,
-					   const u8 *key, unsigned int keylen)
-{
-	struct ablkcipher_tfm *crt = crypto_ablkcipher_crt(tfm);
-
-	return crt->setkey(crt->base, key, keylen);
-}
-
-/**
- * crypto_ablkcipher_reqtfm() - obtain cipher handle from request
- * @req: ablkcipher_request out of which the cipher handle is to be obtained
- *
- * Return the crypto_ablkcipher handle when furnishing an ablkcipher_request
- * data structure.
- *
- * Return: crypto_ablkcipher handle
- */
-static inline struct crypto_ablkcipher *crypto_ablkcipher_reqtfm(
-	struct ablkcipher_request *req)
-{
-	return __crypto_ablkcipher_cast(req->base.tfm);
-}
-
-/**
- * crypto_ablkcipher_encrypt() - encrypt plaintext
- * @req: reference to the ablkcipher_request handle that holds all information
- *	 needed to perform the cipher operation
- *
- * Encrypt plaintext data using the ablkcipher_request handle. That data
- * structure and how it is filled with data is discussed with the
- * ablkcipher_request_* functions.
- *
- * Return: 0 if the cipher operation was successful; < 0 if an error occurred
- */
-static inline int crypto_ablkcipher_encrypt(struct ablkcipher_request *req)
-{
-	struct ablkcipher_tfm *crt =
-		crypto_ablkcipher_crt(crypto_ablkcipher_reqtfm(req));
-	struct crypto_alg *alg = crt->base->base.__crt_alg;
-	unsigned int nbytes = req->nbytes;
-	int ret;
-
-	crypto_stats_get(alg);
-	ret = crt->encrypt(req);
-	crypto_stats_ablkcipher_encrypt(nbytes, ret, alg);
-	return ret;
-}
-
-/**
- * crypto_ablkcipher_decrypt() - decrypt ciphertext
- * @req: reference to the ablkcipher_request handle that holds all information
- *	 needed to perform the cipher operation
- *
- * Decrypt ciphertext data using the ablkcipher_request handle. That data
- * structure and how it is filled with data is discussed with the
- * ablkcipher_request_* functions.
- *
- * Return: 0 if the cipher operation was successful; < 0 if an error occurred
- */
-static inline int crypto_ablkcipher_decrypt(struct ablkcipher_request *req)
-{
-	struct ablkcipher_tfm *crt =
-		crypto_ablkcipher_crt(crypto_ablkcipher_reqtfm(req));
-	struct crypto_alg *alg = crt->base->base.__crt_alg;
-	unsigned int nbytes = req->nbytes;
-	int ret;
-
-	crypto_stats_get(alg);
-	ret = crt->decrypt(req);
-	crypto_stats_ablkcipher_decrypt(nbytes, ret, alg);
-	return ret;
-}
-
-/**
- * DOC: Asynchronous Cipher Request Handle
- *
- * The ablkcipher_request data structure contains all pointers to data
- * required for the asynchronous cipher operation. This includes the cipher
- * handle (which can be used by multiple ablkcipher_request instances), pointer
- * to plaintext and ciphertext, asynchronous callback function, etc. It acts
- * as a handle to the ablkcipher_request_* API calls in a similar way as
- * ablkcipher handle to the crypto_ablkcipher_* API calls.
- */
-
-/**
- * crypto_ablkcipher_reqsize() - obtain size of the request data structure
- * @tfm: cipher handle
- *
- * Return: number of bytes
- */
-static inline unsigned int crypto_ablkcipher_reqsize(
-	struct crypto_ablkcipher *tfm)
-{
-	return crypto_ablkcipher_crt(tfm)->reqsize;
-}
-
-/**
- * ablkcipher_request_set_tfm() - update cipher handle reference in request
- * @req: request handle to be modified
- * @tfm: cipher handle that shall be added to the request handle
- *
- * Allow the caller to replace the existing ablkcipher handle in the request
- * data structure with a different one.
- */
-static inline void ablkcipher_request_set_tfm(
-	struct ablkcipher_request *req, struct crypto_ablkcipher *tfm)
-{
-	req->base.tfm = crypto_ablkcipher_tfm(crypto_ablkcipher_crt(tfm)->base);
-}
-
-static inline struct ablkcipher_request *ablkcipher_request_cast(
-	struct crypto_async_request *req)
-{
-	return container_of(req, struct ablkcipher_request, base);
-}
-
-/**
- * ablkcipher_request_alloc() - allocate request data structure
- * @tfm: cipher handle to be registered with the request
- * @gfp: memory allocation flag that is handed to kmalloc by the API call.
- *
- * Allocate the request data structure that must be used with the ablkcipher
- * encrypt and decrypt API calls. During the allocation, the provided ablkcipher
- * handle is registered in the request data structure.
- *
- * Return: allocated request handle in case of success, or NULL if out of memory
- */
-static inline struct ablkcipher_request *ablkcipher_request_alloc(
-	struct crypto_ablkcipher *tfm, gfp_t gfp)
-{
-	struct ablkcipher_request *req;
-
-	req = kmalloc(sizeof(struct ablkcipher_request) +
-		      crypto_ablkcipher_reqsize(tfm), gfp);
-
-	if (likely(req))
-		ablkcipher_request_set_tfm(req, tfm);
-
-	return req;
-}
-
-/**
- * ablkcipher_request_free() - zeroize and free request data structure
- * @req: request data structure cipher handle to be freed
- */
-static inline void ablkcipher_request_free(struct ablkcipher_request *req)
-{
-	kzfree(req);
-}
-
-/**
- * ablkcipher_request_set_callback() - set asynchronous callback function
- * @req: request handle
- * @flags: specify zero or an ORing of the flags
- *	   CRYPTO_TFM_REQ_MAY_BACKLOG the request queue may back log and
- *	   increase the wait queue beyond the initial maximum size;
- *	   CRYPTO_TFM_REQ_MAY_SLEEP the request processing may sleep
- * @compl: callback function pointer to be registered with the request handle
- * @data: The data pointer refers to memory that is not used by the kernel
- *	  crypto API, but provided to the callback function for it to use. Here,
- *	  the caller can provide a reference to memory the callback function can
- *	  operate on. As the callback function is invoked asynchronously to the
- *	  related functionality, it may need to access data structures of the
- *	  related functionality which can be referenced using this pointer. The
- *	  callback function can access the memory via the "data" field in the
- *	  crypto_async_request data structure provided to the callback function.
- *
- * This function allows setting the callback function that is triggered once the
- * cipher operation completes.
- *
- * The callback function is registered with the ablkcipher_request handle and
- * must comply with the following template::
- *
- *	void callback_function(struct crypto_async_request *req, int error)
- */
-static inline void ablkcipher_request_set_callback(
-	struct ablkcipher_request *req,
-	u32 flags, crypto_completion_t compl, void *data)
-{
-	req->base.complete = compl;
-	req->base.data = data;
-	req->base.flags = flags;
-}
-
-/**
- * ablkcipher_request_set_crypt() - set data buffers
- * @req: request handle
- * @src: source scatter / gather list
- * @dst: destination scatter / gather list
- * @nbytes: number of bytes to process from @src
- * @iv: IV for the cipher operation which must comply with the IV size defined
- *      by crypto_ablkcipher_ivsize
- *
- * This function allows setting of the source data and destination data
- * scatter / gather lists.
- *
- * For encryption, the source is treated as the plaintext and the
- * destination is the ciphertext. For a decryption operation, the use is
- * reversed - the source is the ciphertext and the destination is the plaintext.
- */
-static inline void ablkcipher_request_set_crypt(
-	struct ablkcipher_request *req,
-	struct scatterlist *src, struct scatterlist *dst,
-	unsigned int nbytes, void *iv)
-{
-	req->src = src;
-	req->dst = dst;
-	req->nbytes = nbytes;
-	req->info = iv;
-}
-
 /**
  * DOC: Single Block Cipher API
  *
-- 
cgit v1.2.3