diff options
Diffstat (limited to 'include/crypto')
| -rw-r--r-- | include/crypto/ecdsa-uclass.h | 39 | ||||
| -rw-r--r-- | include/crypto/internal/rsa.h | 57 | ||||
| -rw-r--r-- | include/crypto/mscode.h | 48 | ||||
| -rw-r--r-- | include/crypto/pkcs7.h | 54 | ||||
| -rw-r--r-- | include/crypto/pkcs7_parser.h | 127 | ||||
| -rw-r--r-- | include/crypto/public_key.h | 96 | ||||
| -rw-r--r-- | include/crypto/x509_parser.h | 116 |
7 files changed, 537 insertions, 0 deletions
diff --git a/include/crypto/ecdsa-uclass.h b/include/crypto/ecdsa-uclass.h new file mode 100644 index 00000000000..189843820a0 --- /dev/null +++ b/include/crypto/ecdsa-uclass.h @@ -0,0 +1,39 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Copyright (c) 2020, Alexandru Gagniuc <mr.nuke.me@gmail.com> + */ + +#include <dm/device.h> + +/** + * struct ecdsa_public_key - ECDSA public key properties + * + * The struct has pointers to the (x, y) curve coordinates to an ECDSA public + * key, as well as the name of the ECDSA curve. The size of the key is inferred + * from the 'curve_name' + */ +struct ecdsa_public_key { + const char *curve_name; /* Name of curve, e.g. "prime256v1" */ + const void *x; /* x coordinate of public key */ + const void *y; /* y coordinate of public key */ + unsigned int size_bits; /* key size in bits, derived from curve name */ +}; + +struct ecdsa_ops { + /** + * Verify signature of hash against given public key + * + * @dev: ECDSA Device + * @pubkey: ECDSA public key + * @hash: Hash of binary image + * @hash_len: Length of hash in bytes + * @signature: Signature in a raw (R, S) point pair + * @sig_len: Length of signature in bytes + * + * This function verifies that the 'signature' of the given 'hash' was + * signed by the private key corresponding to 'pubkey'. + */ + int (*verify)(struct udevice *dev, const struct ecdsa_public_key *pubkey, + const void *hash, size_t hash_len, + const void *signature, size_t sig_len); +}; diff --git a/include/crypto/internal/rsa.h b/include/crypto/internal/rsa.h new file mode 100644 index 00000000000..e870133f4b7 --- /dev/null +++ b/include/crypto/internal/rsa.h @@ -0,0 +1,57 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * RSA internal helpers + * + * Copyright (c) 2015, Intel Corporation + * Authors: Tadeusz Struk <tadeusz.struk@intel.com> + */ +#ifndef _RSA_HELPER_ +#define _RSA_HELPER_ +#include <linux/types.h> + +/** + * rsa_key - RSA key structure + * @n : RSA modulus raw byte stream + * @e : RSA public exponent raw byte stream + * @d : RSA private exponent raw byte stream + * @p : RSA prime factor p of n raw byte stream + * @q : RSA prime factor q of n raw byte stream + * @dp : RSA exponent d mod (p - 1) raw byte stream + * @dq : RSA exponent d mod (q - 1) raw byte stream + * @qinv : RSA CRT coefficient q^(-1) mod p raw byte stream + * @n_sz : length in bytes of RSA modulus n + * @e_sz : length in bytes of RSA public exponent + * @d_sz : length in bytes of RSA private exponent + * @p_sz : length in bytes of p field + * @q_sz : length in bytes of q field + * @dp_sz : length in bytes of dp field + * @dq_sz : length in bytes of dq field + * @qinv_sz : length in bytes of qinv field + */ +struct rsa_key { + const u8 *n; + const u8 *e; + const u8 *d; + const u8 *p; + const u8 *q; + const u8 *dp; + const u8 *dq; + const u8 *qinv; + size_t n_sz; + size_t e_sz; + size_t d_sz; + size_t p_sz; + size_t q_sz; + size_t dp_sz; + size_t dq_sz; + size_t qinv_sz; +}; + +int rsa_parse_pub_key(struct rsa_key *rsa_key, const void *key, + unsigned int key_len); + +int rsa_parse_priv_key(struct rsa_key *rsa_key, const void *key, + unsigned int key_len); + +extern struct crypto_template rsa_pkcs1pad_tmpl; +#endif diff --git a/include/crypto/mscode.h b/include/crypto/mscode.h new file mode 100644 index 00000000000..55501c22acb --- /dev/null +++ b/include/crypto/mscode.h @@ -0,0 +1,48 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* PE Binary parser bits + * + * Copyright (C) 2014 Red Hat, Inc. All Rights Reserved. + * Written by David Howells (dhowells@redhat.com) + */ + +#include <crypto/pkcs7.h> +#ifndef __UBOOT__ +#include <crypto/hash_info.h> +#endif +#if CONFIG_IS_ENABLED(MBEDTLS_LIB_X509) +#include "mbedtls_options.h" +#include <mbedtls/asn1.h> +#include <mbedtls/oid.h> +#endif + +struct pefile_context { +#ifndef __UBOOT__ + unsigned header_size; + unsigned image_checksum_offset; + unsigned cert_dirent_offset; + unsigned n_data_dirents; + unsigned n_sections; + unsigned certs_size; + unsigned sig_offset; + unsigned sig_len; + const struct section_header *secs; +#endif + + /* PKCS#7 MS Individual Code Signing content */ + const void *digest; /* Digest */ + unsigned digest_len; /* Digest length */ + const char *digest_algo; /* Digest algorithm */ +}; + +#ifndef __UBOOT__ +#define kenter(FMT, ...) \ + pr_devel("==> %s("FMT")\n", __func__, ##__VA_ARGS__) +#define kleave(FMT, ...) \ + pr_devel("<== %s()"FMT"\n", __func__, ##__VA_ARGS__) +#endif + +/* + * mscode_parser.c + */ +extern int mscode_parse(void *_ctx, const void *content_data, size_t data_len, + size_t asn1hdrlen); diff --git a/include/crypto/pkcs7.h b/include/crypto/pkcs7.h new file mode 100644 index 00000000000..ca35df29f6f --- /dev/null +++ b/include/crypto/pkcs7.h @@ -0,0 +1,54 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* PKCS#7 crypto data parser + * + * Copyright (C) 2012 Red Hat, Inc. All Rights Reserved. + * Written by David Howells (dhowells@redhat.com) + */ + +#ifndef _CRYPTO_PKCS7_H +#define _CRYPTO_PKCS7_H + +#ifndef __UBOOT__ +#include <linux/verification.h> +#include <crypto/public_key.h> +#endif + +struct key; +struct pkcs7_message; + +/* + * pkcs7_parser.c + */ +extern struct pkcs7_message *pkcs7_parse_message(const void *data, + size_t datalen); +extern void pkcs7_free_message(struct pkcs7_message *pkcs7); + +extern int pkcs7_get_content_data(const struct pkcs7_message *pkcs7, + const void **_data, size_t *_datalen, + size_t *_headerlen); + +#ifdef __UBOOT__ +struct pkcs7_signed_info; +struct x509_certificate; + +int pkcs7_verify_one(struct pkcs7_message *pkcs7, + struct pkcs7_signed_info *sinfo, + struct x509_certificate **signer); +#else +/* + * pkcs7_trust.c + */ +extern int pkcs7_validate_trust(struct pkcs7_message *pkcs7, + struct key *trust_keyring); + +/* + * pkcs7_verify.c + */ +extern int pkcs7_verify(struct pkcs7_message *pkcs7, + enum key_being_used_for usage); + +extern int pkcs7_supply_detached_data(struct pkcs7_message *pkcs7, + const void *data, size_t datalen); +#endif + +#endif /* _CRYPTO_PKCS7_H */ diff --git a/include/crypto/pkcs7_parser.h b/include/crypto/pkcs7_parser.h new file mode 100644 index 00000000000..fd1e48da09e --- /dev/null +++ b/include/crypto/pkcs7_parser.h @@ -0,0 +1,127 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* PKCS#7 crypto data parser internal definitions + * + * Copyright (C) 2012 Red Hat, Inc. All Rights Reserved. + * Written by David Howells (dhowells@redhat.com) + */ + +#ifndef _PKCS7_PARSER_H +#define _PKCS7_PARSER_H + +#include <linux/oid_registry.h> +#include <crypto/pkcs7.h> +#include <crypto/x509_parser.h> +#if CONFIG_IS_ENABLED(MBEDTLS_LIB_X509) +#include "mbedtls_options.h" +#include <mbedtls/pkcs7.h> +#include <library/x509_internal.h> +#include <mbedtls/asn1.h> +#include <mbedtls/oid.h> +#endif +#include <linux/printk.h> + +#define kenter(FMT, ...) \ + pr_devel("==> %s("FMT")\n", __func__, ##__VA_ARGS__) +#define kleave(FMT, ...) \ + pr_devel("<== %s()"FMT"\n", __func__, ##__VA_ARGS__) + +/* Backup the parsed MedTLS context that we need */ +#if CONFIG_IS_ENABLED(MBEDTLS_LIB_X509) +struct pkcs7_mbedtls_ctx { + void *content_data; +}; + +struct pkcs7_sinfo_mbedtls_ctx { + void *authattrs_data; + void *content_data_digest; +}; +#endif + +/* + * MbedTLS integration Notes: + * + * MbedTLS PKCS#7 library does not originally support parsing MicroSoft + * Authentication Code which is used for verifying the PE image digest. + * + * 1. Authenticated Attributes (authenticatedAttributes) + * MbedTLS assumes unauthenticatedAttributes and authenticatedAttributes + * fields not exist. + * See MbedTLS function 'pkcs7_get_signer_info' for details. + * + * 2. MicroSoft Authentication Code (mscode) + * MbedTLS only supports Content Data type defined as 1.2.840.113549.1.7.1 + * (MBEDTLS_OID_PKCS7_DATA, aka OID_data). + * 1.3.6.1.4.1.311.2.1.4 (MicroSoft Authentication Code, aka + * OID_msIndirectData) is not supported. + * See MbedTLS function 'pkcs7_get_content_info_type' for details. + * + * But the EFI loader assumes that a PKCS#7 message with an EFI image always + * contains MicroSoft Authentication Code as Content Data (msg->data is NOT + * NULL), see function 'efi_signature_verify'. + * + * MbedTLS patch "0002-support-MicroSoft-authentication-code-in-PKCS7-lib.patch" + * is to support both above features by parsing the Content Data and + * Authenticate Attributes from a given PKCS#7 message. + * + * Other fields we don't need to populate from MbedTLS, which are used + * internally by pkcs7_verify: + * 'signer', 'unsupported_crypto', 'blacklisted' + * 'sig->digest' is used internally by pkcs7_digest to calculate the hash of + * Content Data or Authenticate Attributes. + */ +struct pkcs7_signed_info { +#if CONFIG_IS_ENABLED(MBEDTLS_LIB_X509) + struct pkcs7_sinfo_mbedtls_ctx *mbedtls_ctx; +#endif + struct pkcs7_signed_info *next; + struct x509_certificate *signer; /* Signing certificate (in msg->certs) */ + unsigned index; + bool unsupported_crypto; /* T if not usable due to missing crypto */ + bool blacklisted; + + /* Message digest - the digest of the Content Data (or NULL) */ + const void *msgdigest; + unsigned msgdigest_len; + + /* Authenticated Attribute data (or NULL) */ + unsigned authattrs_len; + const void *authattrs; + unsigned long aa_set; +#define sinfo_has_content_type 0 +#define sinfo_has_signing_time 1 +#define sinfo_has_message_digest 2 +#define sinfo_has_smime_caps 3 +#define sinfo_has_ms_opus_info 4 +#define sinfo_has_ms_statement_type 5 + time64_t signing_time; + + /* Message signature. + * + * This contains the generated digest of _either_ the Content Data or + * the Authenticated Attributes [RFC2315 9.3]. If the latter, one of + * the attributes contains the digest of the the Content Data within + * it. + * + * THis also contains the issuing cert serial number and issuer's name + * [PKCS#7 or CMS ver 1] or issuing cert's SKID [CMS ver 3]. + */ + struct public_key_signature *sig; +}; + +struct pkcs7_message { +#if CONFIG_IS_ENABLED(MBEDTLS_LIB_X509) + struct pkcs7_mbedtls_ctx *mbedtls_ctx; +#endif + struct x509_certificate *certs; /* Certificate list */ + struct x509_certificate *crl; /* Revocation list */ + struct pkcs7_signed_info *signed_infos; + u8 version; /* Version of cert (1 -> PKCS#7 or CMS; 3 -> CMS) */ + bool have_authattrs; /* T if have authattrs */ + + /* Content Data (or NULL) */ + enum OID data_type; /* Type of Data */ + size_t data_len; /* Length of Data */ + size_t data_hdrlen; /* Length of Data ASN.1 header */ + const void *data; /* Content Data (or 0) */ +}; +#endif /* _PKCS7_PARSER_H */ diff --git a/include/crypto/public_key.h b/include/crypto/public_key.h new file mode 100644 index 00000000000..25cfb68adce --- /dev/null +++ b/include/crypto/public_key.h @@ -0,0 +1,96 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* Asymmetric public-key algorithm definitions + * + * See Documentation/crypto/asymmetric-keys.txt + * + * Copyright (C) 2012 Red Hat, Inc. All Rights Reserved. + * Written by David Howells (dhowells@redhat.com) + */ + +#ifndef _LINUX_PUBLIC_KEY_H +#define _LINUX_PUBLIC_KEY_H + +#ifdef __UBOOT__ +#include <linux/types.h> +#if CONFIG_IS_ENABLED(MBEDTLS_LIB_X509) +#include <library/common.h> +#include <mbedtls/pk.h> +#include <mbedtls/x509_crt.h> +#include <mbedtls/md.h> +#endif +#else +#include <linux/keyctl.h> +#endif +#include <linux/oid_registry.h> + +/* + * Cryptographic data for the public-key subtype of the asymmetric key type. + * + * Note that this may include private part of the key as well as the public + * part. + */ +struct public_key { + void *key; + u32 keylen; + enum OID algo; + void *params; + u32 paramlen; + bool key_is_private; + const char *id_type; + const char *pkey_algo; +}; + +extern void public_key_free(struct public_key *key); + +/* + * Public key cryptography signature data + */ +struct public_key_signature { + struct asymmetric_key_id *auth_ids[2]; + u8 *s; /* Signature */ + u32 s_size; /* Number of bytes in signature */ + u8 *digest; + u8 digest_size; /* Number of bytes in digest */ + const char *pkey_algo; + const char *hash_algo; + const char *encoding; +}; + +extern void public_key_signature_free(struct public_key_signature *sig); + +#ifndef __UBOOT__ +extern struct asymmetric_key_subtype public_key_subtype; + +struct key; +struct key_type; +union key_payload; + +extern int restrict_link_by_signature(struct key *dest_keyring, + const struct key_type *type, + const union key_payload *payload, + struct key *trust_keyring); + +extern int restrict_link_by_key_or_keyring(struct key *dest_keyring, + const struct key_type *type, + const union key_payload *payload, + struct key *trusted); + +extern int restrict_link_by_key_or_keyring_chain(struct key *trust_keyring, + const struct key_type *type, + const union key_payload *payload, + struct key *trusted); + +extern int query_asymmetric_key(const struct kernel_pkey_params *, + struct kernel_pkey_query *); + +extern int encrypt_blob(struct kernel_pkey_params *, const void *, void *); +extern int decrypt_blob(struct kernel_pkey_params *, const void *, void *); +extern int create_signature(struct kernel_pkey_params *, const void *, void *); +extern int verify_signature(const struct key *, + const struct public_key_signature *); +#endif /* __UBOOT__ */ + +int public_key_verify_signature(const struct public_key *pkey, + const struct public_key_signature *sig); + +#endif /* _LINUX_PUBLIC_KEY_H */ diff --git a/include/crypto/x509_parser.h b/include/crypto/x509_parser.h new file mode 100644 index 00000000000..0e22e33f66b --- /dev/null +++ b/include/crypto/x509_parser.h @@ -0,0 +1,116 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* X.509 certificate parser internal definitions + * + * Copyright (C) 2012 Red Hat, Inc. All Rights Reserved. + * Written by David Howells (dhowells@redhat.com) + */ + +#ifndef _X509_PARSER_H +#define _X509_PARSER_H + +#include <linux/time.h> +#include <crypto/public_key.h> +#include <keys/asymmetric-type.h> +#if CONFIG_IS_ENABLED(MBEDTLS_LIB_X509) +#include <image.h> +#include <mbedtls/error.h> +#include <mbedtls/asn1.h> +#endif + +#if CONFIG_IS_ENABLED(MBEDTLS_LIB_X509) +struct x509_cert_mbedtls_ctx { + void *tbs; /* Signed data */ + void *raw_serial; /* Raw serial number in ASN.1 */ + void *raw_issuer; /* Raw issuer name in ASN.1 */ + void *raw_subject; /* Raw subject name in ASN.1 */ + void *raw_skid; /* Raw subjectKeyId in ASN.1 */ +}; +#endif + +/* + * MbedTLS integration Notes: + * + * Fields we don't need to populate from MbedTLS context: + * 'raw_sig' and 'raw_sig_size' are buffer for x509_parse_context, + * not needed for MbedTLS. + * 'signer' and 'seen' are used internally by pkcs7_verify. + * 'verified' is not in use. + */ +struct x509_certificate { +#if CONFIG_IS_ENABLED(MBEDTLS_LIB_X509) + struct x509_cert_mbedtls_ctx *mbedtls_ctx; +#endif + struct x509_certificate *next; + struct x509_certificate *signer; /* Certificate that signed this one */ + struct public_key *pub; /* Public key details */ + struct public_key_signature *sig; /* Signature parameters */ + char *issuer; /* Name of certificate issuer */ + char *subject; /* Name of certificate subject */ + struct asymmetric_key_id *id; /* Issuer + Serial number */ + struct asymmetric_key_id *skid; /* Subject + subjectKeyId (optional) */ + time64_t valid_from; + time64_t valid_to; + const void *tbs; /* Signed data */ + unsigned tbs_size; /* Size of signed data */ + unsigned raw_sig_size; /* Size of sigature */ + const void *raw_sig; /* Signature data */ + const void *raw_serial; /* Raw serial number in ASN.1 */ + unsigned raw_serial_size; + unsigned raw_issuer_size; + const void *raw_issuer; /* Raw issuer name in ASN.1 */ + const void *raw_subject; /* Raw subject name in ASN.1 */ + unsigned raw_subject_size; + unsigned raw_skid_size; + const void *raw_skid; /* Raw subjectKeyId in ASN.1 */ + unsigned index; + bool seen; /* Infinite recursion prevention */ + bool verified; + bool self_signed; /* T if self-signed (check unsupported_sig too) */ + bool unsupported_key; /* T if key uses unsupported crypto */ + bool unsupported_sig; /* T if signature uses unsupported crypto */ + bool blacklisted; +}; + +/* + * x509_cert_parser.c + */ +extern void x509_free_certificate(struct x509_certificate *cert); +#if CONFIG_IS_ENABLED(MBEDTLS_LIB_X509) +/** + * x509_populate_pubkey() - Populate public key from MbedTLS context + * + * @cert: Pointer to MbedTLS X509 cert + * @pub_key: Pointer to the populated public key handle + * Return: 0 on succcess, error code on failure + */ +int x509_populate_pubkey(mbedtls_x509_crt *cert, struct public_key **pub_key); +/** + * x509_populate_cert() - Populate X509 cert from MbedTLS context + * + * @mbedtls_cert: Pointer to MbedTLS X509 cert + * @pcert: Pointer to the populated X509 cert handle + * Return: 0 on succcess, error code on failure + */ +int x509_populate_cert(mbedtls_x509_crt *mbedtls_cert, + struct x509_certificate **pcert); +/** + * x509_get_timestamp() - Translate timestamp from MbedTLS context + * + * @x509_time: Pointer to MbedTLS time + * Return: Time in time64_t format + */ +time64_t x509_get_timestamp(const mbedtls_x509_time *x509_time); +#endif +extern struct x509_certificate *x509_cert_parse(const void *data, size_t datalen); +extern int x509_decode_time(time64_t *_t, size_t hdrlen, + unsigned char tag, + const unsigned char *value, size_t vlen); + +/* + * x509_public_key.c + */ +#if !CONFIG_IS_ENABLED(MBEDTLS_LIB_X509) +extern int x509_get_sig_params(struct x509_certificate *cert); +#endif +extern int x509_check_for_self_signed(struct x509_certificate *cert); +#endif /* _X509_PARSER_H */ |