From fa47376f4c3e03b18ccd52df53d8c5041155d4ed Mon Sep 17 00:00:00 2001 From: Nikos Mavrogiannopoulos Date: Fri, 4 Jul 2014 07:31:25 +0200 Subject: [PATCH] cryptodev: Fix issue with signature generation That patch also enables support for SHA2 hashes, and removes support for hashes that were never supported by cryptodev. --- crypto/engine/eng_cryptodev.c | 192 ++++++++++++++++++++++++++++++------------ 1 file changed, 140 insertions(+), 52 deletions(-) diff --git a/crypto/engine/eng_cryptodev.c b/crypto/engine/eng_cryptodev.c index 568e131..a1c39e5 100644 --- a/crypto/engine/eng_cryptodev.c +++ b/crypto/engine/eng_cryptodev.c @@ -2,6 +2,7 @@ * Copyright (c) 2002 Bob Beck * Copyright (c) 2002 Theo de Raadt * Copyright (c) 2002 Markus Friedl + * Copyright (c) 2012 Nikos Mavrogiannopoulos * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -74,8 +75,6 @@ struct dev_crypto_state { int d_fd; #ifdef USE_CRYPTODEV_DIGESTS - char dummy_mac_key[HASH_MAX_LEN]; - unsigned char digest_res[HASH_MAX_LEN]; char *mac_data; int mac_len; @@ -162,15 +161,21 @@ static struct { static struct { int id; int nid; - int keylen; + int digestlen; } digests[] = { +#if 0 + /* HMAC is not supported */ { CRYPTO_MD5_HMAC, NID_hmacWithMD5, 16}, { CRYPTO_SHA1_HMAC, NID_hmacWithSHA1, 20}, - { CRYPTO_RIPEMD160_HMAC, NID_ripemd160, 16/*?*/}, - { CRYPTO_MD5_KPDK, NID_undef, 0}, - { CRYPTO_SHA1_KPDK, NID_undef, 0}, + { CRYPTO_SHA2_256_HMAC, NID_hmacWithSHA256, 32}, + { CRYPTO_SHA2_384_HMAC, NID_hmacWithSHA384, 48}, + { CRYPTO_SHA2_512_HMAC, NID_hmacWithSHA512, 64}, +#endif { CRYPTO_MD5, NID_md5, 16}, { CRYPTO_SHA1, NID_sha1, 20}, + { CRYPTO_SHA2_256, NID_sha256, 32}, + { CRYPTO_SHA2_384, NID_sha384, 48}, + { CRYPTO_SHA2_512, NID_sha512, 64}, { 0, NID_undef, 0}, }; #endif @@ -248,13 +253,14 @@ get_cryptodev_ciphers(const int **cnids) static int nids[CRYPTO_ALGORITHM_MAX]; struct session_op sess; int fd, i, count = 0; + unsigned char fake_key[CRYPTO_CIPHER_MAX_KEY_LEN]; if ((fd = get_dev_crypto()) < 0) { *cnids = NULL; return (0); } memset(&sess, 0, sizeof(sess)); - sess.key = (caddr_t)"123456789abcdefghijklmno"; + sess.key = (void*)fake_key; for (i = 0; ciphers[i].id && count < CRYPTO_ALGORITHM_MAX; i++) { if (ciphers[i].nid == NID_undef) @@ -286,6 +292,7 @@ static int get_cryptodev_digests(const int **cnids) { static int nids[CRYPTO_ALGORITHM_MAX]; + unsigned char fake_key[CRYPTO_CIPHER_MAX_KEY_LEN]; struct session_op sess; int fd, i, count = 0; @@ -294,12 +301,12 @@ get_cryptodev_digests(const int **cnids) return (0); } memset(&sess, 0, sizeof(sess)); - sess.mackey = (caddr_t)"123456789abcdefghijklmno"; + sess.mackey = fake_key; for (i = 0; digests[i].id && count < CRYPTO_ALGORITHM_MAX; i++) { if (digests[i].nid == NID_undef) continue; sess.mac = digests[i].id; - sess.mackeylen = digests[i].keylen; + sess.mackeylen = 8; sess.cipher = 0; if (ioctl(fd, CIOCGSESSION, &sess) != -1 && ioctl(fd, CIOCFSESSION, &sess.ses) != -1) @@ -387,14 +394,14 @@ cryptodev_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, cryp.ses = sess->ses; cryp.flags = 0; cryp.len = inl; - cryp.src = (caddr_t) in; - cryp.dst = (caddr_t) out; + cryp.src = (void*) in; + cryp.dst = (void*) out; cryp.mac = 0; cryp.op = ctx->encrypt ? COP_ENCRYPT : COP_DECRYPT; if (ctx->cipher->iv_len) { - cryp.iv = (caddr_t) ctx->iv; + cryp.iv = (void*) ctx->iv; if (!ctx->encrypt) { iiv = in + inl - ctx->cipher->iv_len; memcpy(save_iv, iiv, ctx->cipher->iv_len); @@ -445,7 +452,7 @@ cryptodev_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, if ((state->d_fd = get_dev_crypto()) < 0) return (0); - sess->key = (caddr_t)key; + sess->key = (void*)key; sess->keylen = ctx->key_len; sess->cipher = cipher; @@ -715,18 +722,6 @@ digest_nid_to_cryptodev(int nid) } -static int -digest_key_length(int nid) -{ - int i; - - for (i = 0; digests[i].id; i++) - if (digests[i].nid == nid) - return digests[i].keylen; - return (0); -} - - static int cryptodev_digest_init(EVP_MD_CTX *ctx) { struct dev_crypto_state *state = ctx->md_data; @@ -737,7 +732,6 @@ static int cryptodev_digest_init(EVP_MD_CTX *ctx) printf("cryptodev_digest_init: Can't get digest \n"); return (0); } - memset(state, 0, sizeof(struct dev_crypto_state)); if ((state->d_fd = get_dev_crypto()) < 0) { @@ -745,8 +739,8 @@ static int cryptodev_digest_init(EVP_MD_CTX *ctx) return (0); } - sess->mackey = state->dummy_mac_key; - sess->mackeylen = digest_key_length(ctx->digest->type); + sess->mackey = NULL; + sess->mackeylen = 0; sess->mac = digest; if (ioctl(state->d_fd, CIOCGSESSION, sess) < 0) { @@ -762,8 +756,8 @@ static int cryptodev_digest_init(EVP_MD_CTX *ctx) static int cryptodev_digest_update(EVP_MD_CTX *ctx, const void *data, size_t count) { - struct crypt_op cryp; struct dev_crypto_state *state = ctx->md_data; + struct crypt_op cryp; struct session_op *sess = &state->d_sess; if (!data || state->d_fd < 0) { @@ -772,7 +766,7 @@ static int cryptodev_digest_update(EVP_MD_CTX *ctx, const void *data, } if (!count) { - return (0); + return (1); } if (!(ctx->flags & EVP_MD_CTX_FLAG_ONESHOT)) { @@ -795,9 +789,9 @@ static int cryptodev_digest_update(EVP_MD_CTX *ctx, const void *data, cryp.ses = sess->ses; cryp.flags = 0; cryp.len = count; - cryp.src = (caddr_t) data; + cryp.src = (void*) data; cryp.dst = NULL; - cryp.mac = (caddr_t) state->digest_res; + cryp.mac = (void*) state->digest_res; if (ioctl(state->d_fd, CIOCCRYPT, &cryp) < 0) { printf("cryptodev_digest_update: digest failed\n"); return (0); @@ -812,8 +806,6 @@ static int cryptodev_digest_final(EVP_MD_CTX *ctx, unsigned char *md) struct dev_crypto_state *state = ctx->md_data; struct session_op *sess = &state->d_sess; - int ret = 1; - if (!md || state->d_fd < 0) { printf("cryptodev_digest_final: illegal input\n"); return(0); @@ -827,7 +819,7 @@ static int cryptodev_digest_final(EVP_MD_CTX *ctx, unsigned char *md) cryp.len = state->mac_len; cryp.src = state->mac_data; cryp.dst = NULL; - cryp.mac = (caddr_t)md; + cryp.mac = (void*)md; if (ioctl(state->d_fd, CIOCCRYPT, &cryp) < 0) { printf("cryptodev_digest_final: digest failed\n"); return (0); @@ -838,7 +830,7 @@ static int cryptodev_digest_final(EVP_MD_CTX *ctx, unsigned char *md) memcpy(md, state->digest_res, ctx->digest->md_size); - return (ret); + return 1; } @@ -890,8 +882,8 @@ static int cryptodev_digest_copy(EVP_MD_CTX *to,const EVP_MD_CTX *from) digest = digest_nid_to_cryptodev(to->digest->type); - sess->mackey = dstate->dummy_mac_key; - sess->mackeylen = digest_key_length(to->digest->type); + sess->mackey = NULL; + sess->mackeylen = 0; sess->mac = digest; dstate->d_fd = get_dev_crypto(); @@ -916,34 +908,117 @@ static int cryptodev_digest_copy(EVP_MD_CTX *to,const EVP_MD_CTX *from) } -const EVP_MD cryptodev_sha1 = { +static const EVP_MD cryptodev_sha1 = { NID_sha1, - NID_undef, + NID_sha1WithRSAEncryption, SHA_DIGEST_LENGTH, +#if defined(EVP_MD_FLAG_PKEY_METHOD_SIGNATURE) && defined(EVP_MD_FLAG_DIGALGID_ABSENT) + EVP_MD_FLAG_PKEY_METHOD_SIGNATURE| + EVP_MD_FLAG_DIGALGID_ABSENT| +#endif EVP_MD_FLAG_ONESHOT, cryptodev_digest_init, cryptodev_digest_update, cryptodev_digest_final, cryptodev_digest_copy, cryptodev_digest_cleanup, - EVP_PKEY_NULL_method, + EVP_PKEY_RSA_method, SHA_CBLOCK, - sizeof(struct dev_crypto_state), + sizeof(EVP_MD *)+sizeof(struct dev_crypto_state), +}; + +static const EVP_MD cryptodev_sha256 = { + NID_sha256, + NID_sha256WithRSAEncryption, + SHA256_DIGEST_LENGTH, +#if defined(EVP_MD_FLAG_PKEY_METHOD_SIGNATURE) && defined(EVP_MD_FLAG_DIGALGID_ABSENT) + EVP_MD_FLAG_PKEY_METHOD_SIGNATURE| + EVP_MD_FLAG_DIGALGID_ABSENT| +#endif + EVP_MD_FLAG_ONESHOT, + cryptodev_digest_init, + cryptodev_digest_update, + cryptodev_digest_final, + cryptodev_digest_copy, + cryptodev_digest_cleanup, + EVP_PKEY_RSA_method, + SHA256_CBLOCK, + sizeof(EVP_MD *)+sizeof(struct dev_crypto_state), +}; +static const EVP_MD cryptodev_sha224 = { + NID_sha224, + NID_sha224WithRSAEncryption, + SHA224_DIGEST_LENGTH, +#if defined(EVP_MD_FLAG_PKEY_METHOD_SIGNATURE) && defined(EVP_MD_FLAG_DIGALGID_ABSENT) + EVP_MD_FLAG_PKEY_METHOD_SIGNATURE| + EVP_MD_FLAG_DIGALGID_ABSENT| +#endif + EVP_MD_FLAG_ONESHOT, + cryptodev_digest_init, + cryptodev_digest_update, + cryptodev_digest_final, + cryptodev_digest_copy, + cryptodev_digest_cleanup, + EVP_PKEY_RSA_method, + SHA256_CBLOCK, + sizeof(EVP_MD *)+sizeof(struct dev_crypto_state), +}; + +static const EVP_MD cryptodev_sha384 = { + NID_sha384, + NID_sha384WithRSAEncryption, + SHA384_DIGEST_LENGTH, +#if defined(EVP_MD_FLAG_PKEY_METHOD_SIGNATURE) && defined(EVP_MD_FLAG_DIGALGID_ABSENT) + EVP_MD_FLAG_PKEY_METHOD_SIGNATURE| + EVP_MD_FLAG_DIGALGID_ABSENT| +#endif + EVP_MD_FLAG_ONESHOT, + cryptodev_digest_init, + cryptodev_digest_update, + cryptodev_digest_final, + cryptodev_digest_copy, + cryptodev_digest_cleanup, + EVP_PKEY_RSA_method, + SHA512_CBLOCK, + sizeof(EVP_MD *)+sizeof(struct dev_crypto_state), +}; + +static const EVP_MD cryptodev_sha512 = { + NID_sha512, + NID_sha512WithRSAEncryption, + SHA512_DIGEST_LENGTH, +#if defined(EVP_MD_FLAG_PKEY_METHOD_SIGNATURE) && defined(EVP_MD_FLAG_DIGALGID_ABSENT) + EVP_MD_FLAG_PKEY_METHOD_SIGNATURE| + EVP_MD_FLAG_DIGALGID_ABSENT| +#endif + EVP_MD_FLAG_ONESHOT, + cryptodev_digest_init, + cryptodev_digest_update, + cryptodev_digest_final, + cryptodev_digest_copy, + cryptodev_digest_cleanup, + EVP_PKEY_RSA_method, + SHA512_CBLOCK, + sizeof(EVP_MD *)+sizeof(struct dev_crypto_state), }; -const EVP_MD cryptodev_md5 = { +static const EVP_MD cryptodev_md5 = { NID_md5, - NID_undef, + NID_md5WithRSAEncryption, 16 /* MD5_DIGEST_LENGTH */, +#if defined(EVP_MD_FLAG_PKEY_METHOD_SIGNATURE) && defined(EVP_MD_FLAG_DIGALGID_ABSENT) + EVP_MD_FLAG_PKEY_METHOD_SIGNATURE| + EVP_MD_FLAG_DIGALGID_ABSENT| +#endif EVP_MD_FLAG_ONESHOT, cryptodev_digest_init, cryptodev_digest_update, cryptodev_digest_final, cryptodev_digest_copy, cryptodev_digest_cleanup, - EVP_PKEY_NULL_method, + EVP_PKEY_RSA_method, 64 /* MD5_CBLOCK */, - sizeof(struct dev_crypto_state), + sizeof(EVP_MD *)+sizeof(struct dev_crypto_state), }; #endif /* USE_CRYPTODEV_DIGESTS */ @@ -964,6 +1039,18 @@ cryptodev_engine_digests(ENGINE *e, const EVP_MD **digest, case NID_sha1: *digest = &cryptodev_sha1; break; + case NID_sha224: + *digest = &cryptodev_sha224; + break; + case NID_sha256: + *digest = &cryptodev_sha256; + break; + case NID_sha384: + *digest = &cryptodev_sha384; + break; + case NID_sha512: + *digest = &cryptodev_sha512; + break; default: #endif /* USE_CRYPTODEV_DIGESTS */ *digest = NULL; @@ -995,7 +1082,7 @@ bn2crparam(const BIGNUM *a, struct crparam *crp) return (1); memset(b, 0, bytes); - crp->crp_p = (caddr_t) b; + crp->crp_p = (void*) b; crp->crp_nbits = bits; for (i = 0, j = 0; i < a->top; i++) { @@ -1248,7 +1335,7 @@ cryptodev_dsa_do_sign(const unsigned char *dgst, int dlen, DSA *dsa) kop.crk_op = CRK_DSA_SIGN; /* inputs: dgst dsa->p dsa->q dsa->g dsa->priv_key */ - kop.crk_param[0].crp_p = (caddr_t)dgst; + kop.crk_param[0].crp_p = (void*)dgst; kop.crk_param[0].crp_nbits = dlen * 8; if (bn2crparam(dsa->p, &kop.crk_param[1])) goto err; @@ -1288,7 +1375,7 @@ cryptodev_dsa_verify(const unsigned char *dgst, int dlen, kop.crk_op = CRK_DSA_VERIFY; /* inputs: dgst dsa->p dsa->q dsa->g dsa->pub_key sig->r sig->s */ - kop.crk_param[0].crp_p = (caddr_t)dgst; + kop.crk_param[0].crp_p = (void*)dgst; kop.crk_param[0].crp_nbits = dlen * 8; if (bn2crparam(dsa->p, &kop.crk_param[1])) goto err; @@ -1366,9 +1453,10 @@ cryptodev_dh_compute_key(unsigned char *key, const BIGNUM *pub_key, DH *dh) goto err; kop.crk_iparams = 3; - kop.crk_param[3].crp_p = (caddr_t) key; - kop.crk_param[3].crp_nbits = keylen * 8; + kop.crk_param[3].crp_p = (void*) key; + kop.crk_param[3].crp_nbits = keylen; kop.crk_oparams = 1; + dhret = keylen/8; if (ioctl(fd, CIOCKEY, &kop) == -1) { const DH_METHOD *meth = DH_OpenSSL(); @@ -1440,7 +1528,7 @@ ENGINE_load_cryptodev(void) put_dev_crypto(fd); if (!ENGINE_set_id(engine, "cryptodev") || - !ENGINE_set_name(engine, "BSD cryptodev engine") || + !ENGINE_set_name(engine, "cryptodev engine") || !ENGINE_set_ciphers(engine, cryptodev_engine_ciphers) || !ENGINE_set_digests(engine, cryptodev_engine_digests) || !ENGINE_set_ctrl_function(engine, cryptodev_ctrl) || -- 2.0.0