diff options
Diffstat (limited to 'crypto/evp/p5_crpt.c')
| -rw-r--r-- | crypto/evp/p5_crpt.c | 80 |
1 files changed, 34 insertions, 46 deletions
diff --git a/crypto/evp/p5_crpt.c b/crypto/evp/p5_crpt.c index c0dfb7de37..7d9c1f0123 100644 --- a/crypto/evp/p5_crpt.c +++ b/crypto/evp/p5_crpt.c @@ -1,5 +1,5 @@ /* p5_crpt.c */ -/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL +/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL * project 1999. */ /* ==================================================================== @@ -62,42 +62,11 @@ #include <openssl/x509.h> #include <openssl/evp.h> -/* PKCS#5 v1.5 compatible PBE functions: see PKCS#5 v2.0 for more info. +/* Doesn't do anything now: Builtin PBE algorithms in static table. */ void PKCS5_PBE_add(void) { -#ifndef OPENSSL_NO_DES -# ifndef OPENSSL_NO_MD5 -EVP_PBE_alg_add(NID_pbeWithMD5AndDES_CBC, EVP_des_cbc(), EVP_md5(), - PKCS5_PBE_keyivgen); -# endif -# ifndef OPENSSL_NO_MD2 -EVP_PBE_alg_add(NID_pbeWithMD2AndDES_CBC, EVP_des_cbc(), EVP_md2(), - PKCS5_PBE_keyivgen); -# endif -# ifndef OPENSSL_NO_SHA -EVP_PBE_alg_add(NID_pbeWithSHA1AndDES_CBC, EVP_des_cbc(), EVP_sha1(), - PKCS5_PBE_keyivgen); -# endif -#endif -#ifndef OPENSSL_NO_RC2 -# ifndef OPENSSL_NO_MD5 -EVP_PBE_alg_add(NID_pbeWithMD5AndRC2_CBC, EVP_rc2_64_cbc(), EVP_md5(), - PKCS5_PBE_keyivgen); -# endif -# ifndef OPENSSL_NO_MD2 -EVP_PBE_alg_add(NID_pbeWithMD2AndRC2_CBC, EVP_rc2_64_cbc(), EVP_md2(), - PKCS5_PBE_keyivgen); -# endif -# ifndef OPENSSL_NO_SHA -EVP_PBE_alg_add(NID_pbeWithSHA1AndRC2_CBC, EVP_rc2_64_cbc(), EVP_sha1(), - PKCS5_PBE_keyivgen); -# endif -#endif -#ifndef OPENSSL_NO_HMAC -EVP_PBE_alg_add(NID_pbes2, NULL, NULL, PKCS5_v2_PBE_keyivgen); -#endif } int PKCS5_PBE_keyivgen(EVP_CIPHER_CTX *cctx, const char *pass, int passlen, @@ -112,11 +81,19 @@ int PKCS5_PBE_keyivgen(EVP_CIPHER_CTX *cctx, const char *pass, int passlen, int saltlen, iter; unsigned char *salt; const unsigned char *pbuf; + int mdsize; + int rv = 0; + EVP_MD_CTX_init(&ctx); /* Extract useful info from parameter */ + if (param == NULL || param->type != V_ASN1_SEQUENCE || + param->value.sequence == NULL) { + EVPerr(EVP_F_PKCS5_PBE_KEYIVGEN,EVP_R_DECODE_ERROR); + return 0; + } + pbuf = param->value.sequence->data; - if (!param || (param->type != V_ASN1_SEQUENCE) || - !(pbe = d2i_PBEPARAM (NULL, &pbuf, param->value.sequence->length))) { + if (!(pbe = d2i_PBEPARAM(NULL, &pbuf, param->value.sequence->length))) { EVPerr(EVP_F_PKCS5_PBE_KEYIVGEN,EVP_R_DECODE_ERROR); return 0; } @@ -129,26 +106,37 @@ int PKCS5_PBE_keyivgen(EVP_CIPHER_CTX *cctx, const char *pass, int passlen, if(!pass) passlen = 0; else if(passlen == -1) passlen = strlen(pass); - EVP_MD_CTX_init(&ctx); - EVP_DigestInit_ex(&ctx, md, NULL); - EVP_DigestUpdate(&ctx, pass, passlen); - EVP_DigestUpdate(&ctx, salt, saltlen); + if (!EVP_DigestInit_ex(&ctx, md, NULL)) + goto err; + if (!EVP_DigestUpdate(&ctx, pass, passlen)) + goto err; + if (!EVP_DigestUpdate(&ctx, salt, saltlen)) + goto err; PBEPARAM_free(pbe); - EVP_DigestFinal_ex(&ctx, md_tmp, NULL); + if (!EVP_DigestFinal_ex(&ctx, md_tmp, NULL)) + goto err; + mdsize = EVP_MD_size(md); + if (mdsize < 0) + return 0; for (i = 1; i < iter; i++) { - EVP_DigestInit_ex(&ctx, md, NULL); - EVP_DigestUpdate(&ctx, md_tmp, EVP_MD_size(md)); - EVP_DigestFinal_ex (&ctx, md_tmp, NULL); + if (!EVP_DigestInit_ex(&ctx, md, NULL)) + goto err; + if (!EVP_DigestUpdate(&ctx, md_tmp, mdsize)) + goto err; + if (!EVP_DigestFinal_ex (&ctx, md_tmp, NULL)) + goto err; } - EVP_MD_CTX_cleanup(&ctx); OPENSSL_assert(EVP_CIPHER_key_length(cipher) <= (int)sizeof(md_tmp)); memcpy(key, md_tmp, EVP_CIPHER_key_length(cipher)); OPENSSL_assert(EVP_CIPHER_iv_length(cipher) <= 16); memcpy(iv, md_tmp + (16 - EVP_CIPHER_iv_length(cipher)), EVP_CIPHER_iv_length(cipher)); - EVP_CipherInit_ex(cctx, cipher, NULL, key, iv, en_de); + if (!EVP_CipherInit_ex(cctx, cipher, NULL, key, iv, en_de)) + goto err; OPENSSL_cleanse(md_tmp, EVP_MAX_MD_SIZE); OPENSSL_cleanse(key, EVP_MAX_KEY_LENGTH); OPENSSL_cleanse(iv, EVP_MAX_IV_LENGTH); - return 1; + rv = 1; + err: + return rv; } |