crypto: safexcel - Add support for authenc(hmac(md5),*) suites

This patch adds support for the following AEAD ciphersuites:
- authenc(hmac(md5),cbc(aes))
- authenc(hmac(md5),cbc(des)))
- authenc(hmac(md5),cbc(des3_ede))
- authenc(hmac(md5),rfc3686(ctr(aes)))

The first three ciphersuites were tested using testmgr and the recently
sent test vectors. They passed self-tests.

This is enhanced version of the patch found in the mtk-openwrt-feeds repo.

Signed-off-by: Aleksander Jan Bajkowski <olek2@wp.pl>
Reviewed-by: Antoine Tenart <atenart@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

3 files changed, 157 insertions, 0 deletions

diff --git a/drivers/crypto/inside-secure/safexcel.c b/drivers/crypto/inside-secure/safexcel.c
index 072059154d1c..fb4936e7afa2 100644
--- a/drivers/crypto/inside-secure/safexcel.c
+++ b/drivers/crypto/inside-secure/safexcel.c
@@ -1204,11 +1204,13 @@ static struct safexcel_alg_template *safexcel_algs[] = {
 	&safexcel_alg_hmac_sha256,
 	&safexcel_alg_hmac_sha384,
 	&safexcel_alg_hmac_sha512,
+	&safexcel_alg_authenc_hmac_md5_cbc_aes,
 	&safexcel_alg_authenc_hmac_sha1_cbc_aes,
 	&safexcel_alg_authenc_hmac_sha224_cbc_aes,
 	&safexcel_alg_authenc_hmac_sha256_cbc_aes,
 	&safexcel_alg_authenc_hmac_sha384_cbc_aes,
 	&safexcel_alg_authenc_hmac_sha512_cbc_aes,
+	&safexcel_alg_authenc_hmac_md5_ctr_aes,
 	&safexcel_alg_authenc_hmac_sha1_ctr_aes,
 	&safexcel_alg_authenc_hmac_sha224_ctr_aes,
 	&safexcel_alg_authenc_hmac_sha256_ctr_aes,
@@ -1240,11 +1242,13 @@ static struct safexcel_alg_template *safexcel_algs[] = {
 	&safexcel_alg_hmac_sha3_256,
 	&safexcel_alg_hmac_sha3_384,
 	&safexcel_alg_hmac_sha3_512,
+	&safexcel_alg_authenc_hmac_md5_cbc_des3_ede,
 	&safexcel_alg_authenc_hmac_sha1_cbc_des3_ede,
 	&safexcel_alg_authenc_hmac_sha256_cbc_des3_ede,
 	&safexcel_alg_authenc_hmac_sha224_cbc_des3_ede,
 	&safexcel_alg_authenc_hmac_sha512_cbc_des3_ede,
 	&safexcel_alg_authenc_hmac_sha384_cbc_des3_ede,
+	&safexcel_alg_authenc_hmac_md5_cbc_des,
 	&safexcel_alg_authenc_hmac_sha1_cbc_des,
 	&safexcel_alg_authenc_hmac_sha256_cbc_des,
 	&safexcel_alg_authenc_hmac_sha224_cbc_des,
diff --git a/drivers/crypto/inside-secure/safexcel.h b/drivers/crypto/inside-secure/safexcel.h
index ca012e2845f7..52fd460c0e9b 100644
--- a/drivers/crypto/inside-secure/safexcel.h
+++ b/drivers/crypto/inside-secure/safexcel.h
@@ -945,11 +945,13 @@ extern struct safexcel_alg_template safexcel_alg_hmac_sha224;
 extern struct safexcel_alg_template safexcel_alg_hmac_sha256;
 extern struct safexcel_alg_template safexcel_alg_hmac_sha384;
 extern struct safexcel_alg_template safexcel_alg_hmac_sha512;
+extern struct safexcel_alg_template safexcel_alg_authenc_hmac_md5_cbc_aes;
 extern struct safexcel_alg_template safexcel_alg_authenc_hmac_sha1_cbc_aes;
 extern struct safexcel_alg_template safexcel_alg_authenc_hmac_sha224_cbc_aes;
 extern struct safexcel_alg_template safexcel_alg_authenc_hmac_sha256_cbc_aes;
 extern struct safexcel_alg_template safexcel_alg_authenc_hmac_sha384_cbc_aes;
 extern struct safexcel_alg_template safexcel_alg_authenc_hmac_sha512_cbc_aes;
+extern struct safexcel_alg_template safexcel_alg_authenc_hmac_md5_ctr_aes;
 extern struct safexcel_alg_template safexcel_alg_authenc_hmac_sha1_ctr_aes;
 extern struct safexcel_alg_template safexcel_alg_authenc_hmac_sha224_ctr_aes;
 extern struct safexcel_alg_template safexcel_alg_authenc_hmac_sha256_ctr_aes;
@@ -981,11 +983,13 @@ extern struct safexcel_alg_template safexcel_alg_hmac_sha3_224;
 extern struct safexcel_alg_template safexcel_alg_hmac_sha3_256;
 extern struct safexcel_alg_template safexcel_alg_hmac_sha3_384;
 extern struct safexcel_alg_template safexcel_alg_hmac_sha3_512;
+extern struct safexcel_alg_template safexcel_alg_authenc_hmac_md5_cbc_des3_ede;
 extern struct safexcel_alg_template safexcel_alg_authenc_hmac_sha1_cbc_des3_ede;
 extern struct safexcel_alg_template safexcel_alg_authenc_hmac_sha256_cbc_des3_ede;
 extern struct safexcel_alg_template safexcel_alg_authenc_hmac_sha224_cbc_des3_ede;
 extern struct safexcel_alg_template safexcel_alg_authenc_hmac_sha512_cbc_des3_ede;
 extern struct safexcel_alg_template safexcel_alg_authenc_hmac_sha384_cbc_des3_ede;
+extern struct safexcel_alg_template safexcel_alg_authenc_hmac_md5_cbc_des;
 extern struct safexcel_alg_template safexcel_alg_authenc_hmac_sha1_cbc_des;
 extern struct safexcel_alg_template safexcel_alg_authenc_hmac_sha256_cbc_des;
 extern struct safexcel_alg_template safexcel_alg_authenc_hmac_sha224_cbc_des;
diff --git a/drivers/crypto/inside-secure/safexcel_cipher.c b/drivers/crypto/inside-secure/safexcel_cipher.c
index 27b180057417..a8349b684693 100644
--- a/drivers/crypto/inside-secure/safexcel_cipher.c
+++ b/drivers/crypto/inside-secure/safexcel_cipher.c
@@ -17,6 +17,7 @@
 #include <crypto/internal/des.h>
 #include <crypto/gcm.h>
 #include <crypto/ghash.h>
+#include <crypto/md5.h>
 #include <crypto/poly1305.h>
 #include <crypto/sha1.h>
 #include <crypto/sha2.h>
@@ -462,6 +463,9 @@ static int safexcel_aead_setkey(struct crypto_aead *ctfm, const u8 *key,
 
 	/* Auth key */
 	switch (ctx->hash_alg) {
+	case CONTEXT_CONTROL_CRYPTO_ALG_MD5:
+		alg = "safexcel-md5";
+		break;
 	case CONTEXT_CONTROL_CRYPTO_ALG_SHA1:
 		alg = "safexcel-sha1";
 		break;
@@ -1662,6 +1666,42 @@ static int safexcel_aead_cra_init(struct crypto_tfm *tfm)
 	return 0;
 }
 
+static int safexcel_aead_md5_cra_init(struct crypto_tfm *tfm)
+{
+	struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(tfm);
+
+	safexcel_aead_cra_init(tfm);
+	ctx->hash_alg = CONTEXT_CONTROL_CRYPTO_ALG_MD5;
+	ctx->state_sz = MD5_DIGEST_SIZE;
+	return 0;
+}
+
+struct safexcel_alg_template safexcel_alg_authenc_hmac_md5_cbc_aes = {
+	.type = SAFEXCEL_ALG_TYPE_AEAD,
+	.algo_mask = SAFEXCEL_ALG_AES | SAFEXCEL_ALG_MD5,
+	.alg.aead = {
+		.setkey = safexcel_aead_setkey,
+		.encrypt = safexcel_aead_encrypt,
+		.decrypt = safexcel_aead_decrypt,
+		.ivsize = AES_BLOCK_SIZE,
+		.maxauthsize = MD5_DIGEST_SIZE,
+		.base = {
+			.cra_name = "authenc(hmac(md5),cbc(aes))",
+			.cra_driver_name = "safexcel-authenc-hmac-md5-cbc-aes",
+			.cra_priority = SAFEXCEL_CRA_PRIORITY,
+			.cra_flags = CRYPTO_ALG_ASYNC |
+				     CRYPTO_ALG_ALLOCATES_MEMORY |
+				     CRYPTO_ALG_KERN_DRIVER_ONLY,
+			.cra_blocksize = AES_BLOCK_SIZE,
+			.cra_ctxsize = sizeof(struct safexcel_cipher_ctx),
+			.cra_alignmask = 0,
+			.cra_init = safexcel_aead_md5_cra_init,
+			.cra_exit = safexcel_aead_cra_exit,
+			.cra_module = THIS_MODULE,
+		},
+	},
+};
+
 static int safexcel_aead_sha1_cra_init(struct crypto_tfm *tfm)
 {
 	struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(tfm);
@@ -1842,6 +1882,43 @@ struct safexcel_alg_template safexcel_alg_authenc_hmac_sha384_cbc_aes = {
 	},
 };
 
+static int safexcel_aead_md5_des3_cra_init(struct crypto_tfm *tfm)
+{
+	struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(tfm);
+
+	safexcel_aead_md5_cra_init(tfm);
+	ctx->alg = SAFEXCEL_3DES; /* override default */
+	ctx->blocksz = DES3_EDE_BLOCK_SIZE;
+	ctx->ivmask = EIP197_OPTION_2_TOKEN_IV_CMD;
+	return 0;
+}
+
+struct safexcel_alg_template safexcel_alg_authenc_hmac_md5_cbc_des3_ede = {
+	.type = SAFEXCEL_ALG_TYPE_AEAD,
+	.algo_mask = SAFEXCEL_ALG_DES | SAFEXCEL_ALG_MD5,
+	.alg.aead = {
+		.setkey = safexcel_aead_setkey,
+		.encrypt = safexcel_aead_encrypt,
+		.decrypt = safexcel_aead_decrypt,
+		.ivsize = DES3_EDE_BLOCK_SIZE,
+		.maxauthsize = MD5_DIGEST_SIZE,
+		.base = {
+			.cra_name = "authenc(hmac(md5),cbc(des3_ede))",
+			.cra_driver_name = "safexcel-authenc-hmac-md5-cbc-des3_ede",
+			.cra_priority = SAFEXCEL_CRA_PRIORITY,
+			.cra_flags = CRYPTO_ALG_ASYNC |
+				     CRYPTO_ALG_ALLOCATES_MEMORY |
+				     CRYPTO_ALG_KERN_DRIVER_ONLY,
+			.cra_blocksize = DES3_EDE_BLOCK_SIZE,
+			.cra_ctxsize = sizeof(struct safexcel_cipher_ctx),
+			.cra_alignmask = 0,
+			.cra_init = safexcel_aead_md5_des3_cra_init,
+			.cra_exit = safexcel_aead_cra_exit,
+			.cra_module = THIS_MODULE,
+		},
+	},
+};
+
 static int safexcel_aead_sha1_des3_cra_init(struct crypto_tfm *tfm)
 {
 	struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(tfm);
@@ -2027,6 +2104,43 @@ struct safexcel_alg_template safexcel_alg_authenc_hmac_sha384_cbc_des3_ede = {
 	},
 };
 
+static int safexcel_aead_md5_des_cra_init(struct crypto_tfm *tfm)
+{
+	struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(tfm);
+
+	safexcel_aead_md5_cra_init(tfm);
+	ctx->alg = SAFEXCEL_DES; /* override default */
+	ctx->blocksz = DES_BLOCK_SIZE;
+	ctx->ivmask = EIP197_OPTION_2_TOKEN_IV_CMD;
+	return 0;
+}
+
+struct safexcel_alg_template safexcel_alg_authenc_hmac_md5_cbc_des = {
+	.type = SAFEXCEL_ALG_TYPE_AEAD,
+	.algo_mask = SAFEXCEL_ALG_DES | SAFEXCEL_ALG_MD5,
+	.alg.aead = {
+		.setkey = safexcel_aead_setkey,
+		.encrypt = safexcel_aead_encrypt,
+		.decrypt = safexcel_aead_decrypt,
+		.ivsize = DES_BLOCK_SIZE,
+		.maxauthsize = MD5_DIGEST_SIZE,
+		.base = {
+			.cra_name = "authenc(hmac(md5),cbc(des))",
+			.cra_driver_name = "safexcel-authenc-hmac-md5-cbc-des",
+			.cra_priority = SAFEXCEL_CRA_PRIORITY,
+			.cra_flags = CRYPTO_ALG_ASYNC |
+				     CRYPTO_ALG_ALLOCATES_MEMORY |
+				     CRYPTO_ALG_KERN_DRIVER_ONLY,
+			.cra_blocksize = DES_BLOCK_SIZE,
+			.cra_ctxsize = sizeof(struct safexcel_cipher_ctx),
+			.cra_alignmask = 0,
+			.cra_init = safexcel_aead_md5_des_cra_init,
+			.cra_exit = safexcel_aead_cra_exit,
+			.cra_module = THIS_MODULE,
+		},
+	},
+};
+
 static int safexcel_aead_sha1_des_cra_init(struct crypto_tfm *tfm)
 {
 	struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(tfm);
@@ -2212,6 +2326,41 @@ struct safexcel_alg_template safexcel_alg_authenc_hmac_sha384_cbc_des = {
 	},
 };
 
+static int safexcel_aead_md5_ctr_cra_init(struct crypto_tfm *tfm)
+{
+	struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(tfm);
+
+	safexcel_aead_md5_cra_init(tfm);
+	ctx->mode = CONTEXT_CONTROL_CRYPTO_MODE_CTR_LOAD; /* override default */
+	return 0;
+}
+
+struct safexcel_alg_template safexcel_alg_authenc_hmac_md5_ctr_aes = {
+	.type = SAFEXCEL_ALG_TYPE_AEAD,
+	.algo_mask = SAFEXCEL_ALG_AES | SAFEXCEL_ALG_MD5,
+	.alg.aead = {
+		.setkey = safexcel_aead_setkey,
+		.encrypt = safexcel_aead_encrypt,
+		.decrypt = safexcel_aead_decrypt,
+		.ivsize = CTR_RFC3686_IV_SIZE,
+		.maxauthsize = MD5_DIGEST_SIZE,
+		.base = {
+			.cra_name = "authenc(hmac(md5),rfc3686(ctr(aes)))",
+			.cra_driver_name = "safexcel-authenc-hmac-md5-ctr-aes",
+			.cra_priority = SAFEXCEL_CRA_PRIORITY,
+			.cra_flags = CRYPTO_ALG_ASYNC |
+				     CRYPTO_ALG_ALLOCATES_MEMORY |
+				     CRYPTO_ALG_KERN_DRIVER_ONLY,
+			.cra_blocksize = 1,
+			.cra_ctxsize = sizeof(struct safexcel_cipher_ctx),
+			.cra_alignmask = 0,
+			.cra_init = safexcel_aead_md5_ctr_cra_init,
+			.cra_exit = safexcel_aead_cra_exit,
+			.cra_module = THIS_MODULE,
+		},
+	},
+};
+
 static int safexcel_aead_sha1_ctr_cra_init(struct crypto_tfm *tfm)
 {
 	struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(tfm);