X-Git-Url: https://git.openssl.org/gitweb/?p=openssl.git;a=blobdiff_plain;f=crypto%2Fevp%2Fp5_crpt2.c;h=c12d35c8ab84b851864313ade31800cb83ca744a;hp=7485d6a278cd67780204e93f8add42b863ad2c29;hb=7707526b8dfa8063c4537c11199c15ad7a3cab1c;hpb=7b63c0fa8c309bed7848b5ca5810ae9e2f2fb3c1 diff --git a/crypto/evp/p5_crpt2.c b/crypto/evp/p5_crpt2.c index 7485d6a278..c12d35c8ab 100644 --- a/crypto/evp/p5_crpt2.c +++ b/crypto/evp/p5_crpt2.c @@ -1,250 +1,218 @@ -/* p5_crpt2.c */ -/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL - * project 1999. - */ -/* ==================================================================== - * Copyright (c) 1999 The OpenSSL Project. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * 1. Redistributions of source code must retain the above copyright - * 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 - * the documentation and/or other materials provided with the - * distribution. - * - * 3. All advertising materials mentioning features or use of this - * software must display the following acknowledgment: - * "This product includes software developed by the OpenSSL Project - * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" - * - * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to - * endorse or promote products derived from this software without - * prior written permission. For written permission, please contact - * licensing@OpenSSL.org. - * - * 5. Products derived from this software may not be called "OpenSSL" - * nor may "OpenSSL" appear in their names without prior written - * permission of the OpenSSL Project. - * - * 6. Redistributions of any form whatsoever must retain the following - * acknowledgment: - * "This product includes software developed by the OpenSSL Project - * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" - * - * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY - * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR - * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR - * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; - * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, - * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED - * OF THE POSSIBILITY OF SUCH DAMAGE. - * ==================================================================== - * - * This product includes cryptographic software written by Eric Young - * (eay@cryptsoft.com). This product includes software written by Tim - * Hudson (tjh@cryptsoft.com). +/* + * Copyright 1999-2019 The OpenSSL Project Authors. All Rights Reserved. * + * Licensed under the Apache License 2.0 (the "License"). You may not use + * this file except in compliance with the License. You can obtain a copy + * in the file LICENSE in the source distribution or at + * https://www.openssl.org/source/license.html */ -#if !defined(OPENSSL_NO_HMAC) && !defined(OPENSSL_NO_SHA) + #include #include -#include "cryptlib.h" +#include "internal/cryptlib.h" #include #include +#include #include - -/* set this to print out info about the keygen algorithm */ -/* #define DEBUG_PKCS5V2 */ - -#ifdef DEBUG_PKCS5V2 - static void h__dump (const unsigned char *p, int len); -#endif - -/* This is an implementation of PKCS#5 v2.0 password based encryption key - * derivation function PBKDF2 using the only currently defined function HMAC - * with SHA1. Verified against test vectors posted by Peter Gutmann - * to the PKCS-TNG mailing list. - */ - -int PKCS5_PBKDF2_HMAC_SHA1(const char *pass, int passlen, - unsigned char *salt, int saltlen, int iter, - int keylen, unsigned char *out) +#include +#include +#include "internal/evp_int.h" +#include "evp_locl.h" + +int PKCS5_PBKDF2_HMAC(const char *pass, int passlen, + const unsigned char *salt, int saltlen, int iter, + const EVP_MD *digest, int keylen, unsigned char *out) { - unsigned char digtmp[SHA_DIGEST_LENGTH], *p, itmp[4]; - int cplen, j, k, tkeylen; - unsigned long i = 1; - HMAC_CTX hctx; - - HMAC_CTX_init(&hctx); - p = out; - tkeylen = keylen; - if(!pass) passlen = 0; - else if(passlen == -1) passlen = strlen(pass); - while(tkeylen) { - if(tkeylen > SHA_DIGEST_LENGTH) cplen = SHA_DIGEST_LENGTH; - else cplen = tkeylen; - /* We are unlikely to ever use more than 256 blocks (5120 bits!) - * but just in case... - */ - itmp[0] = (unsigned char)((i >> 24) & 0xff); - itmp[1] = (unsigned char)((i >> 16) & 0xff); - itmp[2] = (unsigned char)((i >> 8) & 0xff); - itmp[3] = (unsigned char)(i & 0xff); - HMAC_Init_ex(&hctx, pass, passlen, EVP_sha1(), NULL); - HMAC_Update(&hctx, salt, saltlen); - HMAC_Update(&hctx, itmp, 4); - HMAC_Final(&hctx, digtmp, NULL); - memcpy(p, digtmp, cplen); - for(j = 1; j < iter; j++) { - HMAC(EVP_sha1(), pass, passlen, - digtmp, SHA_DIGEST_LENGTH, digtmp, NULL); - for(k = 0; k < cplen; k++) p[k] ^= digtmp[k]; - } - tkeylen-= cplen; - i++; - p+= cplen; - } - HMAC_CTX_cleanup(&hctx); -#ifdef DEBUG_PKCS5V2 - fprintf(stderr, "Password:\n"); - h__dump (pass, passlen); - fprintf(stderr, "Salt:\n"); - h__dump (salt, saltlen); - fprintf(stderr, "Iteration count %d\n", iter); - fprintf(stderr, "Key:\n"); - h__dump (out, keylen); -#endif - return 1; + const char *empty = ""; + int rv = 1, mode = 1; + EVP_KDF *kdf; + EVP_KDF_CTX *kctx; + const char *mdname = EVP_MD_name(digest); + OSSL_PARAM params[6], *p = params; + + /* Keep documented behaviour. */ + if (pass == NULL) { + pass = empty; + passlen = 0; + } else if (passlen == -1) { + passlen = strlen(pass); + } + if (salt == NULL && saltlen == 0) + salt = (unsigned char *)empty; + + kdf = EVP_KDF_fetch(NULL, LN_id_pbkdf2, NULL); + kctx = EVP_KDF_CTX_new(kdf); + EVP_KDF_free(kdf); + if (kctx == NULL) + return 0; + *p++ = OSSL_PARAM_construct_octet_string(OSSL_KDF_PARAM_PASSWORD, + (char *)pass, (size_t)passlen); + *p++ = OSSL_PARAM_construct_int(OSSL_KDF_PARAM_PKCS5, &mode); + *p++ = OSSL_PARAM_construct_octet_string(OSSL_KDF_PARAM_SALT, + (unsigned char *)salt, saltlen); + *p++ = OSSL_PARAM_construct_int(OSSL_KDF_PARAM_ITER, &iter); + *p++ = OSSL_PARAM_construct_utf8_string(OSSL_KDF_PARAM_DIGEST, + (char *)mdname, strlen(mdname) + 1); + *p = OSSL_PARAM_construct_end(); + if (EVP_KDF_CTX_set_params(kctx, params) != 1 + || EVP_KDF_derive(kctx, out, keylen) != 1) + rv = 0; + + EVP_KDF_CTX_free(kctx); + + OSSL_TRACE_BEGIN(PKCS5V2) { + BIO_printf(trc_out, "Password:\n"); + BIO_hex_string(trc_out, + 0, passlen, pass, passlen); + BIO_printf(trc_out, "\n"); + BIO_printf(trc_out, "Salt:\n"); + BIO_hex_string(trc_out, + 0, saltlen, salt, saltlen); + BIO_printf(trc_out, "\n"); + BIO_printf(trc_out, "Iteration count %d\n", iter); + BIO_printf(trc_out, "Key:\n"); + BIO_hex_string(trc_out, + 0, keylen, out, keylen); + BIO_printf(trc_out, "\n"); + } OSSL_TRACE_END(PKCS5V2); + return rv; } -#ifdef DO_TEST -main() +int PKCS5_PBKDF2_HMAC_SHA1(const char *pass, int passlen, + const unsigned char *salt, int saltlen, int iter, + int keylen, unsigned char *out) { - unsigned char out[4]; - unsigned char salt[] = {0x12, 0x34, 0x56, 0x78}; - PKCS5_PBKDF2_HMAC_SHA1("password", -1, salt, 4, 5, 4, out); - fprintf(stderr, "Out %02X %02X %02X %02X\n", - out[0], out[1], out[2], out[3]); + return PKCS5_PBKDF2_HMAC(pass, passlen, salt, saltlen, iter, EVP_sha1(), + keylen, out); } -#endif - -/* Now the key derivation function itself. This is a bit evil because - * it has to check the ASN1 parameters are valid: and there are quite a - * few of them... +/* + * Now the key derivation function itself. This is a bit evil because it has + * to check the ASN1 parameters are valid: and there are quite a few of + * them... */ int PKCS5_v2_PBE_keyivgen(EVP_CIPHER_CTX *ctx, const char *pass, int passlen, - ASN1_TYPE *param, const EVP_CIPHER *c, const EVP_MD *md, - int en_de) + ASN1_TYPE *param, const EVP_CIPHER *c, + const EVP_MD *md, int en_de) { - unsigned char *pbuf, *salt, key[EVP_MAX_KEY_LENGTH]; - int saltlen, keylen, iter, plen; - PBE2PARAM *pbe2 = NULL; - const EVP_CIPHER *cipher; - PBKDF2PARAM *kdf = NULL; - - pbuf = param->value.sequence->data; - plen = param->value.sequence->length; - if(!param || (param->type != V_ASN1_SEQUENCE) || - !(pbe2 = d2i_PBE2PARAM(NULL, &pbuf, plen))) { - EVPerr(EVP_F_PKCS5_V2_PBE_KEYIVGEN,EVP_R_DECODE_ERROR); - return 0; - } - - /* See if we recognise the key derivation function */ - - if(OBJ_obj2nid(pbe2->keyfunc->algorithm) != NID_id_pbkdf2) { - EVPerr(EVP_F_PKCS5_V2_PBE_KEYIVGEN, - EVP_R_UNSUPPORTED_KEY_DERIVATION_FUNCTION); - goto err; - } - - /* lets see if we recognise the encryption algorithm. - */ - - cipher = EVP_get_cipherbyname( - OBJ_nid2sn(OBJ_obj2nid(pbe2->encryption->algorithm))); - - if(!cipher) { - EVPerr(EVP_F_PKCS5_V2_PBE_KEYIVGEN, - EVP_R_UNSUPPORTED_CIPHER); - goto err; - } - - /* Fixup cipher based on AlgorithmIdentifier */ - EVP_CipherInit_ex(ctx, cipher, NULL, NULL, NULL, en_de); - if(EVP_CIPHER_asn1_to_param(ctx, pbe2->encryption->parameter) < 0) { - EVPerr(EVP_F_PKCS5_V2_PBE_KEYIVGEN, - EVP_R_CIPHER_PARAMETER_ERROR); - goto err; - } - keylen = EVP_CIPHER_CTX_key_length(ctx); - - /* Now decode key derivation function */ - - pbuf = pbe2->keyfunc->parameter->value.sequence->data; - plen = pbe2->keyfunc->parameter->value.sequence->length; - if(!pbe2->keyfunc->parameter || - (pbe2->keyfunc->parameter->type != V_ASN1_SEQUENCE) || - !(kdf = d2i_PBKDF2PARAM(NULL, &pbuf, plen)) ) { - EVPerr(EVP_F_PKCS5_V2_PBE_KEYIVGEN,EVP_R_DECODE_ERROR); - goto err; - } - - PBE2PARAM_free(pbe2); - pbe2 = NULL; - - /* Now check the parameters of the kdf */ - - if(kdf->keylength && (ASN1_INTEGER_get(kdf->keylength) != keylen)){ - EVPerr(EVP_F_PKCS5_V2_PBE_KEYIVGEN, - EVP_R_UNSUPPORTED_KEYLENGTH); - goto err; - } - - if(kdf->prf && (OBJ_obj2nid(kdf->prf->algorithm) != NID_hmacWithSHA1)) { - EVPerr(EVP_F_PKCS5_V2_PBE_KEYIVGEN, EVP_R_UNSUPPORTED_PRF); - goto err; - } - - if(kdf->salt->type != V_ASN1_OCTET_STRING) { - EVPerr(EVP_F_PKCS5_V2_PBE_KEYIVGEN, - EVP_R_UNSUPPORTED_SALT_TYPE); - goto err; - } - - /* it seems that its all OK */ - salt = kdf->salt->value.octet_string->data; - saltlen = kdf->salt->value.octet_string->length; - iter = ASN1_INTEGER_get(kdf->iter); - PKCS5_PBKDF2_HMAC_SHA1(pass, passlen, salt, saltlen, iter, keylen, key); - EVP_CipherInit_ex(ctx, NULL, NULL, key, NULL, en_de); - memset(key, 0, keylen); - PBKDF2PARAM_free(kdf); - return 1; - - err: - PBE2PARAM_free(pbe2); - PBKDF2PARAM_free(kdf); - return 0; + PBE2PARAM *pbe2 = NULL; + const EVP_CIPHER *cipher; + EVP_PBE_KEYGEN *kdf; + + int rv = 0; + + pbe2 = ASN1_TYPE_unpack_sequence(ASN1_ITEM_rptr(PBE2PARAM), param); + if (pbe2 == NULL) { + EVPerr(EVP_F_PKCS5_V2_PBE_KEYIVGEN, EVP_R_DECODE_ERROR); + goto err; + } + + /* See if we recognise the key derivation function */ + if (!EVP_PBE_find(EVP_PBE_TYPE_KDF, OBJ_obj2nid(pbe2->keyfunc->algorithm), + NULL, NULL, &kdf)) { + EVPerr(EVP_F_PKCS5_V2_PBE_KEYIVGEN, + EVP_R_UNSUPPORTED_KEY_DERIVATION_FUNCTION); + goto err; + } + + /* + * lets see if we recognise the encryption algorithm. + */ + + cipher = EVP_get_cipherbyobj(pbe2->encryption->algorithm); + + if (!cipher) { + EVPerr(EVP_F_PKCS5_V2_PBE_KEYIVGEN, EVP_R_UNSUPPORTED_CIPHER); + goto err; + } + + /* Fixup cipher based on AlgorithmIdentifier */ + if (!EVP_CipherInit_ex(ctx, cipher, NULL, NULL, NULL, en_de)) + goto err; + if (EVP_CIPHER_asn1_to_param(ctx, pbe2->encryption->parameter) < 0) { + EVPerr(EVP_F_PKCS5_V2_PBE_KEYIVGEN, EVP_R_CIPHER_PARAMETER_ERROR); + goto err; + } + rv = kdf(ctx, pass, passlen, pbe2->keyfunc->parameter, NULL, NULL, en_de); + err: + PBE2PARAM_free(pbe2); + return rv; } -#ifdef DEBUG_PKCS5V2 -static void h__dump (const unsigned char *p, int len) +int PKCS5_v2_PBKDF2_keyivgen(EVP_CIPHER_CTX *ctx, const char *pass, + int passlen, ASN1_TYPE *param, + const EVP_CIPHER *c, const EVP_MD *md, int en_de) { - for (; len --; p++) fprintf(stderr, "%02X ", *p); - fprintf(stderr, "\n"); + unsigned char *salt, key[EVP_MAX_KEY_LENGTH]; + int saltlen, iter, t; + int rv = 0; + unsigned int keylen = 0; + int prf_nid, hmac_md_nid; + PBKDF2PARAM *kdf = NULL; + const EVP_MD *prfmd; + + if (EVP_CIPHER_CTX_cipher(ctx) == NULL) { + EVPerr(EVP_F_PKCS5_V2_PBKDF2_KEYIVGEN, EVP_R_NO_CIPHER_SET); + goto err; + } + keylen = EVP_CIPHER_CTX_key_length(ctx); + OPENSSL_assert(keylen <= sizeof(key)); + + /* Decode parameter */ + + kdf = ASN1_TYPE_unpack_sequence(ASN1_ITEM_rptr(PBKDF2PARAM), param); + + if (kdf == NULL) { + EVPerr(EVP_F_PKCS5_V2_PBKDF2_KEYIVGEN, EVP_R_DECODE_ERROR); + goto err; + } + + t = EVP_CIPHER_CTX_key_length(ctx); + if (t < 0) { + EVPerr(EVP_F_PKCS5_V2_PBKDF2_KEYIVGEN, EVP_R_INVALID_KEY_LENGTH); + goto err; + } + keylen = t; + + /* Now check the parameters of the kdf */ + + if (kdf->keylength && (ASN1_INTEGER_get(kdf->keylength) != (int)keylen)) { + EVPerr(EVP_F_PKCS5_V2_PBKDF2_KEYIVGEN, EVP_R_UNSUPPORTED_KEYLENGTH); + goto err; + } + + if (kdf->prf) + prf_nid = OBJ_obj2nid(kdf->prf->algorithm); + else + prf_nid = NID_hmacWithSHA1; + + if (!EVP_PBE_find(EVP_PBE_TYPE_PRF, prf_nid, NULL, &hmac_md_nid, 0)) { + EVPerr(EVP_F_PKCS5_V2_PBKDF2_KEYIVGEN, EVP_R_UNSUPPORTED_PRF); + goto err; + } + + prfmd = EVP_get_digestbynid(hmac_md_nid); + if (prfmd == NULL) { + EVPerr(EVP_F_PKCS5_V2_PBKDF2_KEYIVGEN, EVP_R_UNSUPPORTED_PRF); + goto err; + } + + if (kdf->salt->type != V_ASN1_OCTET_STRING) { + EVPerr(EVP_F_PKCS5_V2_PBKDF2_KEYIVGEN, EVP_R_UNSUPPORTED_SALT_TYPE); + goto err; + } + + /* it seems that its all OK */ + salt = kdf->salt->value.octet_string->data; + saltlen = kdf->salt->value.octet_string->length; + iter = ASN1_INTEGER_get(kdf->iter); + if (!PKCS5_PBKDF2_HMAC(pass, passlen, salt, saltlen, iter, prfmd, + keylen, key)) + goto err; + rv = EVP_CipherInit_ex(ctx, NULL, NULL, key, NULL, en_de); + err: + OPENSSL_cleanse(key, keylen); + PBKDF2PARAM_free(kdf); + return rv; } -#endif -#endif