X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;ds=sidebyside;f=crypto%2Fevp%2Fp5_crpt.c;h=d06ab90a3e9175ecfc0f5b7dbe0aa42c699ae7f1;hb=33c99f2c8169807660b46d49c3e735cfa09a6e0c;hp=e3dae52d4deaf10485f15f54aa0c318ae52ba72f;hpb=5271ebd9a32c0097f61451f2a4f0bf6ab946ac85;p=oweals%2Fopenssl.git diff --git a/crypto/evp/p5_crpt.c b/crypto/evp/p5_crpt.c index e3dae52d4d..d06ab90a3e 100644 --- a/crypto/evp/p5_crpt.c +++ b/crypto/evp/p5_crpt.c @@ -1,6 +1,7 @@ /* p5_crpt.c */ -/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL - * project 1999. +/* + * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project + * 1999. */ /* ==================================================================== * Copyright (c) 1999 The OpenSSL Project. All rights reserved. @@ -10,7 +11,7 @@ * are met: * * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. + * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in @@ -58,89 +59,91 @@ #include #include +#include "cryptlib.h" #include #include -#include "cryptlib.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 NO_DES -# ifndef NO_MD5 -EVP_PBE_alg_add(NID_pbeWithMD5AndDES_CBC, EVP_des_cbc(), EVP_md5(), - PKCS5_PBE_keyivgen); -# endif -# ifndef NO_MD2 -EVP_PBE_alg_add(NID_pbeWithMD2AndDES_CBC, EVP_des_cbc(), EVP_md2(), - PKCS5_PBE_keyivgen); -# endif -# ifndef NO_SHA -EVP_PBE_alg_add(NID_pbeWithSHA1AndDES_CBC, EVP_des_cbc(), EVP_sha1(), - PKCS5_PBE_keyivgen); -# endif -#endif -#ifndef NO_RC2 -# ifndef NO_MD5 -EVP_PBE_alg_add(NID_pbeWithMD5AndRC2_CBC, EVP_rc2_64_cbc(), EVP_md5(), - PKCS5_PBE_keyivgen); -# endif -# ifndef NO_MD2 -EVP_PBE_alg_add(NID_pbeWithMD2AndRC2_CBC, EVP_rc2_64_cbc(), EVP_md2(), - PKCS5_PBE_keyivgen); -# endif -# ifndef NO_SHA -EVP_PBE_alg_add(NID_pbeWithSHA1AndRC2_CBC, EVP_rc2_64_cbc(), EVP_sha1(), - PKCS5_PBE_keyivgen); -# endif -#endif -#ifndef 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, - ASN1_TYPE *param, EVP_CIPHER *cipher, EVP_MD *md, - int en_de) + ASN1_TYPE *param, const EVP_CIPHER *cipher, + const EVP_MD *md, int en_de) { - EVP_MD_CTX ctx; - unsigned char md_tmp[EVP_MAX_MD_SIZE]; - unsigned char key[EVP_MAX_KEY_LENGTH], iv[EVP_MAX_IV_LENGTH]; - int i; - PBEPARAM *pbe; - int saltlen, iter; - unsigned char *salt, *pbuf; + EVP_MD_CTX ctx; + unsigned char md_tmp[EVP_MAX_MD_SIZE]; + unsigned char key[EVP_MAX_KEY_LENGTH], iv[EVP_MAX_IV_LENGTH]; + int i; + PBEPARAM *pbe; + 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 (!(pbe = d2i_PBEPARAM(NULL, &pbuf, param->value.sequence->length))) { + EVPerr(EVP_F_PKCS5_PBE_KEYIVGEN, EVP_R_DECODE_ERROR); + return 0; + } - /* Extract useful info from parameter */ - pbuf = param->value.sequence->data; - if (!param || (param->type != V_ASN1_SEQUENCE) || - !(pbe = d2i_PBEPARAM (NULL, &pbuf, param->value.sequence->length))) { - EVPerr(EVP_F_PKCS5_PBE_KEYIVGEN,EVP_R_DECODE_ERROR); - return 0; - } + if (!pbe->iter) + iter = 1; + else + iter = ASN1_INTEGER_get(pbe->iter); + salt = pbe->salt->data; + saltlen = pbe->salt->length; - if (!pbe->iter) iter = 1; - else iter = ASN1_INTEGER_get (pbe->iter); - salt = pbe->salt->data; - saltlen = pbe->salt->length; + if (!pass) + passlen = 0; + else if (passlen == -1) + passlen = strlen(pass); - EVP_DigestInit (&ctx, md); - EVP_DigestUpdate (&ctx, pass, passlen); - EVP_DigestUpdate (&ctx, salt, saltlen); - PBEPARAM_free(pbe); - EVP_DigestFinal (&ctx, md_tmp, NULL); - for (i = 1; i < iter; i++) { - EVP_DigestInit(&ctx, md); - EVP_DigestUpdate(&ctx, md_tmp, EVP_MD_size(md)); - EVP_DigestFinal (&ctx, md_tmp, NULL); - } - memcpy (key, md_tmp, EVP_CIPHER_key_length(cipher)); - memcpy (iv, md_tmp + (16 - EVP_CIPHER_iv_length(cipher)), - EVP_CIPHER_iv_length(cipher)); - EVP_CipherInit(cctx, cipher, key, iv, en_de); - memset(md_tmp, 0, EVP_MAX_MD_SIZE); - memset(key, 0, EVP_MAX_KEY_LENGTH); - memset(iv, 0, EVP_MAX_IV_LENGTH); - return 1; + 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); + 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++) { + 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; + } + 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)); + 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); + rv = 1; + err: + EVP_MD_CTX_cleanup(&ctx); + return rv; }