diff options
Diffstat (limited to 'openssl/crypto/evp/p5_crpt.c')
| -rw-r--r-- | openssl/crypto/evp/p5_crpt.c | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/openssl/crypto/evp/p5_crpt.c b/openssl/crypto/evp/p5_crpt.c new file mode 100644 index 00000000..7ecfa8da --- /dev/null +++ b/openssl/crypto/evp/p5_crpt.c @@ -0,0 +1,132 @@ +/* p5_crpt.c */ +/* Written by Dr Stephen N Henson (steve@openssl.org) 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). + * + */ + +#include <stdio.h> +#include <stdlib.h> +#include "cryptlib.h" +#include <openssl/x509.h> +#include <openssl/evp.h> + +/* Doesn't do anything now: Builtin PBE algorithms in static table. + */ + +void PKCS5_PBE_add(void) +{ +} + +int PKCS5_PBE_keyivgen(EVP_CIPHER_CTX *cctx, const char *pass, int passlen, + 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; + const unsigned char *pbuf; + int mdsize; + + /* 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; + } + + 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_MD_CTX_init(&ctx); + EVP_DigestInit_ex(&ctx, md, NULL); + EVP_DigestUpdate(&ctx, pass, passlen); + EVP_DigestUpdate(&ctx, salt, saltlen); + PBEPARAM_free(pbe); + EVP_DigestFinal_ex(&ctx, md_tmp, NULL); + 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, mdsize); + EVP_DigestFinal_ex (&ctx, md_tmp, NULL); + } + 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); + OPENSSL_cleanse(md_tmp, EVP_MAX_MD_SIZE); + OPENSSL_cleanse(key, EVP_MAX_KEY_LENGTH); + OPENSSL_cleanse(iv, EVP_MAX_IV_LENGTH); + return 1; +} |