/* 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.
* 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
#include <stdio.h>
#include <stdlib.h>
-#include "cryptlib.h"
+#include "internal/cryptlib.h"
#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,
- ASN1_TYPE *param, const EVP_CIPHER *cipher, const 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;
+ int mdsize;
+ int rv = 0;
+ EVP_MD_CTX_init(&ctx);
- /* 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;
- }
+ /* 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;
+ }
- if (!pbe->iter) iter = 1;
- else iter = ASN1_INTEGER_get (pbe->iter);
- salt = pbe->salt->data;
- saltlen = pbe->salt->length;
+ pbe = ASN1_TYPE_unpack_sequence(ASN1_ITEM_rptr(PBEPARAM), param);
+ if (pbe == NULL) {
+ EVPerr(EVP_F_PKCS5_PBE_KEYIVGEN, EVP_R_DECODE_ERROR);
+ return 0;
+ }
- if(!pass) passlen = 0;
- else if(passlen == -1) passlen = strlen(pass);
+ if (!pbe->iter)
+ iter = 1;
+ else
+ iter = ASN1_INTEGER_get(pbe->iter);
+ salt = pbe->salt->data;
+ saltlen = pbe->salt->length;
- 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);
- 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);
- }
- 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;
+ if (!pass)
+ passlen = 0;
+ else if (passlen == -1)
+ passlen = strlen(pass);
+
+ 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;
}
projects / openssl.git / blobdiff