-/* p5_pbev2.c */
-/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
- * project 1999-2004.
- */
-/* ====================================================================
- * 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 1999-2016 The OpenSSL Project Authors. All Rights Reserved.
*
+ * Licensed under the OpenSSL license (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
*/
#include <stdio.h>
-#include "cryptlib.h"
+#include "internal/cryptlib.h"
#include <openssl/asn1t.h>
#include <openssl/x509.h>
#include <openssl/rand.h>
/* PKCS#5 v2.0 password based encryption structures */
ASN1_SEQUENCE(PBE2PARAM) = {
- ASN1_SIMPLE(PBE2PARAM, keyfunc, X509_ALGOR),
- ASN1_SIMPLE(PBE2PARAM, encryption, X509_ALGOR)
+ ASN1_SIMPLE(PBE2PARAM, keyfunc, X509_ALGOR),
+ ASN1_SIMPLE(PBE2PARAM, encryption, X509_ALGOR)
} ASN1_SEQUENCE_END(PBE2PARAM)
IMPLEMENT_ASN1_FUNCTIONS(PBE2PARAM)
ASN1_SEQUENCE(PBKDF2PARAM) = {
- ASN1_SIMPLE(PBKDF2PARAM, salt, ASN1_ANY),
- ASN1_SIMPLE(PBKDF2PARAM, iter, ASN1_INTEGER),
- ASN1_OPT(PBKDF2PARAM, keylength, ASN1_INTEGER),
- ASN1_OPT(PBKDF2PARAM, prf, X509_ALGOR)
+ ASN1_SIMPLE(PBKDF2PARAM, salt, ASN1_ANY),
+ ASN1_SIMPLE(PBKDF2PARAM, iter, ASN1_INTEGER),
+ ASN1_OPT(PBKDF2PARAM, keylength, ASN1_INTEGER),
+ ASN1_OPT(PBKDF2PARAM, prf, X509_ALGOR)
} ASN1_SEQUENCE_END(PBKDF2PARAM)
IMPLEMENT_ASN1_FUNCTIONS(PBKDF2PARAM)
-/* Return an algorithm identifier for a PKCS#5 v2.0 PBE algorithm:
- * yes I know this is horrible!
+/*
+ * Return an algorithm identifier for a PKCS#5 v2.0 PBE algorithm: yes I know
+ * this is horrible! Extended version to allow application supplied PRF NID
+ * and IV.
*/
+X509_ALGOR *PKCS5_pbe2_set_iv(const EVP_CIPHER *cipher, int iter,
+ unsigned char *salt, int saltlen,
+ unsigned char *aiv, int prf_nid)
+{
+ X509_ALGOR *scheme = NULL, *kalg = NULL, *ret = NULL;
+ int alg_nid, keylen;
+ EVP_CIPHER_CTX *ctx = NULL;
+ unsigned char iv[EVP_MAX_IV_LENGTH];
+ PBE2PARAM *pbe2 = NULL;
+ ASN1_OBJECT *obj;
+
+ alg_nid = EVP_CIPHER_type(cipher);
+ if (alg_nid == NID_undef) {
+ ASN1err(ASN1_F_PKCS5_PBE2_SET_IV,
+ ASN1_R_CIPHER_HAS_NO_OBJECT_IDENTIFIER);
+ goto err;
+ }
+ obj = OBJ_nid2obj(alg_nid);
+
+ if ((pbe2 = PBE2PARAM_new()) == NULL)
+ goto merr;
+
+ /* Setup the AlgorithmIdentifier for the encryption scheme */
+ scheme = pbe2->encryption;
+ scheme->algorithm = obj;
+ if ((scheme->parameter = ASN1_TYPE_new()) == NULL)
+ goto merr;
+
+ /* Create random IV */
+ if (EVP_CIPHER_iv_length(cipher)) {
+ if (aiv)
+ memcpy(iv, aiv, EVP_CIPHER_iv_length(cipher));
+ else if (RAND_bytes(iv, EVP_CIPHER_iv_length(cipher)) <= 0)
+ goto err;
+ }
+
+ ctx = EVP_CIPHER_CTX_new();
+ if (ctx == NULL)
+ goto merr;
+
+ /* Dummy cipherinit to just setup the IV, and PRF */
+ if (!EVP_CipherInit_ex(ctx, cipher, NULL, NULL, iv, 0))
+ goto err;
+ if (EVP_CIPHER_param_to_asn1(ctx, scheme->parameter) < 0) {
+ ASN1err(ASN1_F_PKCS5_PBE2_SET_IV, ASN1_R_ERROR_SETTING_CIPHER_PARAMS);
+ goto err;
+ }
+ /*
+ * If prf NID unspecified see if cipher has a preference. An error is OK
+ * here: just means use default PRF.
+ */
+ if ((prf_nid == -1) &&
+ EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_PBE_PRF_NID, 0, &prf_nid) <= 0) {
+ ERR_clear_error();
+ prf_nid = NID_hmacWithSHA256;
+ }
+ EVP_CIPHER_CTX_free(ctx);
+ ctx = NULL;
+
+ /* If its RC2 then we'd better setup the key length */
+
+ if (alg_nid == NID_rc2_cbc)
+ keylen = EVP_CIPHER_key_length(cipher);
+ else
+ keylen = -1;
+
+ /* Setup keyfunc */
+
+ X509_ALGOR_free(pbe2->keyfunc);
+
+ pbe2->keyfunc = PKCS5_pbkdf2_set(iter, salt, saltlen, prf_nid, keylen);
+
+ if (!pbe2->keyfunc)
+ goto merr;
+
+ /* Now set up top level AlgorithmIdentifier */
+
+ if ((ret = X509_ALGOR_new()) == NULL)
+ goto merr;
+
+ ret->algorithm = OBJ_nid2obj(NID_pbes2);
+
+ /* Encode PBE2PARAM into parameter */
+
+ if (!ASN1_TYPE_pack_sequence(ASN1_ITEM_rptr(PBE2PARAM), pbe2,
+ &ret->parameter))
+ goto merr;
+
+ PBE2PARAM_free(pbe2);
+ pbe2 = NULL;
+
+ return ret;
+
+ merr:
+ ASN1err(ASN1_F_PKCS5_PBE2_SET_IV, ERR_R_MALLOC_FAILURE);
+
+ err:
+ EVP_CIPHER_CTX_free(ctx);
+ PBE2PARAM_free(pbe2);
+ /* Note 'scheme' is freed as part of pbe2 */
+ X509_ALGOR_free(kalg);
+ X509_ALGOR_free(ret);
+
+ return NULL;
+
+}
+
X509_ALGOR *PKCS5_pbe2_set(const EVP_CIPHER *cipher, int iter,
- unsigned char *salt, int saltlen)
+ unsigned char *salt, int saltlen)
+{
+ return PKCS5_pbe2_set_iv(cipher, iter, salt, saltlen, NULL, -1);
+}
+
+X509_ALGOR *PKCS5_pbkdf2_set(int iter, unsigned char *salt, int saltlen,
+ int prf_nid, int keylen)
{
- X509_ALGOR *scheme = NULL, *kalg = NULL, *ret = NULL;
- int alg_nid;
- EVP_CIPHER_CTX ctx;
- unsigned char iv[EVP_MAX_IV_LENGTH];
- PBKDF2PARAM *kdf = NULL;
- PBE2PARAM *pbe2 = NULL;
- ASN1_OCTET_STRING *osalt = NULL;
- ASN1_OBJECT *obj;
- int prf_nid;
-
- alg_nid = EVP_CIPHER_type(cipher);
- if(alg_nid == NID_undef) {
- ASN1err(ASN1_F_PKCS5_PBE2_SET,
- ASN1_R_CIPHER_HAS_NO_OBJECT_IDENTIFIER);
- goto err;
- }
- obj = OBJ_nid2obj(alg_nid);
-
- if(!(pbe2 = PBE2PARAM_new())) goto merr;
-
- /* Setup the AlgorithmIdentifier for the encryption scheme */
- scheme = pbe2->encryption;
-
- scheme->algorithm = obj;
- if(!(scheme->parameter = ASN1_TYPE_new())) goto merr;
-
- /* Create random IV */
- if (EVP_CIPHER_iv_length(cipher) &&
- RAND_pseudo_bytes(iv, EVP_CIPHER_iv_length(cipher)) < 0)
- goto err;
-
- EVP_CIPHER_CTX_init(&ctx);
-
- /* Dummy cipherinit to just setup the IV, and PRF */
- EVP_CipherInit_ex(&ctx, cipher, NULL, NULL, iv, 0);
- if(EVP_CIPHER_param_to_asn1(&ctx, scheme->parameter) < 0) {
- ASN1err(ASN1_F_PKCS5_PBE2_SET,
- ASN1_R_ERROR_SETTING_CIPHER_PARAMS);
- EVP_CIPHER_CTX_cleanup(&ctx);
- goto err;
- }
- /* An error is OK here: just means use default PRF */
- if (EVP_CIPHER_CTX_ctrl(&ctx, EVP_CTRL_PBE_PRF_NID, 0, &prf_nid) <= 0)
- {
- ERR_clear_error();
- prf_nid = NID_hmacWithSHA1;
- }
- EVP_CIPHER_CTX_cleanup(&ctx);
-
- if(!(kdf = PBKDF2PARAM_new())) goto merr;
- if(!(osalt = M_ASN1_OCTET_STRING_new())) goto merr;
-
- if (!saltlen) saltlen = PKCS5_SALT_LEN;
- if (!(osalt->data = OPENSSL_malloc (saltlen))) goto merr;
- osalt->length = saltlen;
- if (salt) memcpy (osalt->data, salt, saltlen);
- else if (RAND_pseudo_bytes (osalt->data, saltlen) < 0) goto merr;
-
- if(iter <= 0) iter = PKCS5_DEFAULT_ITER;
- if(!ASN1_INTEGER_set(kdf->iter, iter)) goto merr;
-
- /* Now include salt in kdf structure */
- kdf->salt->value.octet_string = osalt;
- kdf->salt->type = V_ASN1_OCTET_STRING;
- osalt = NULL;
-
- /* If its RC2 then we'd better setup the key length */
-
- if(alg_nid == NID_rc2_cbc) {
- if(!(kdf->keylength = M_ASN1_INTEGER_new())) goto merr;
- if(!ASN1_INTEGER_set (kdf->keylength,
- EVP_CIPHER_key_length(cipher))) goto merr;
- }
-
- /* prf can stay NULL if we are using hmacWithSHA1 */
- if (prf_nid != NID_hmacWithSHA1)
- {
- kdf->prf = X509_ALGOR_new();
- if (!kdf->prf)
- goto merr;
- X509_ALGOR_set0(kdf->prf, OBJ_nid2obj(prf_nid),
- V_ASN1_NULL, NULL);
- }
-
- /* Now setup the PBE2PARAM keyfunc structure */
-
- pbe2->keyfunc->algorithm = OBJ_nid2obj(NID_id_pbkdf2);
-
- /* Encode PBKDF2PARAM into parameter of pbe2 */
-
- if(!(pbe2->keyfunc->parameter = ASN1_TYPE_new())) goto merr;
-
- if(!ASN1_pack_string_of(PBKDF2PARAM, kdf, i2d_PBKDF2PARAM,
- &pbe2->keyfunc->parameter->value.sequence)) goto merr;
- pbe2->keyfunc->parameter->type = V_ASN1_SEQUENCE;
-
- PBKDF2PARAM_free(kdf);
- kdf = NULL;
-
- /* Now set up top level AlgorithmIdentifier */
-
- if(!(ret = X509_ALGOR_new())) goto merr;
- if(!(ret->parameter = ASN1_TYPE_new())) goto merr;
+ X509_ALGOR *keyfunc = NULL;
+ PBKDF2PARAM *kdf = NULL;
+ ASN1_OCTET_STRING *osalt = NULL;
+
+ if ((kdf = PBKDF2PARAM_new()) == NULL)
+ goto merr;
+ if ((osalt = ASN1_OCTET_STRING_new()) == NULL)
+ goto merr;
+
+ kdf->salt->value.octet_string = osalt;
+ kdf->salt->type = V_ASN1_OCTET_STRING;
+
+ if (saltlen == 0)
+ saltlen = PKCS5_SALT_LEN;
+ if ((osalt->data = OPENSSL_malloc(saltlen)) == NULL)
+ goto merr;
+
+ osalt->length = saltlen;
+
+ if (salt)
+ memcpy(osalt->data, salt, saltlen);
+ else if (RAND_bytes(osalt->data, saltlen) <= 0)
+ goto merr;
+
+ if (iter <= 0)
+ iter = PKCS5_DEFAULT_ITER;
+
+ if (!ASN1_INTEGER_set(kdf->iter, iter))
+ goto merr;
+
+ /* If have a key len set it up */
- ret->algorithm = OBJ_nid2obj(NID_pbes2);
+ if (keylen > 0) {
+ if ((kdf->keylength = ASN1_INTEGER_new()) == NULL)
+ goto merr;
+ if (!ASN1_INTEGER_set(kdf->keylength, keylen))
+ goto merr;
+ }
- /* Encode PBE2PARAM into parameter */
+ /* prf can stay NULL if we are using hmacWithSHA1 */
+ if (prf_nid > 0 && prf_nid != NID_hmacWithSHA1) {
+ kdf->prf = X509_ALGOR_new();
+ if (kdf->prf == NULL)
+ goto merr;
+ X509_ALGOR_set0(kdf->prf, OBJ_nid2obj(prf_nid), V_ASN1_NULL, NULL);
+ }
- if(!ASN1_pack_string_of(PBE2PARAM, pbe2, i2d_PBE2PARAM,
- &ret->parameter->value.sequence)) goto merr;
- ret->parameter->type = V_ASN1_SEQUENCE;
+ /* Finally setup the keyfunc structure */
- PBE2PARAM_free(pbe2);
- pbe2 = NULL;
+ keyfunc = X509_ALGOR_new();
+ if (keyfunc == NULL)
+ goto merr;
- return ret;
+ keyfunc->algorithm = OBJ_nid2obj(NID_id_pbkdf2);
- merr:
- ASN1err(ASN1_F_PKCS5_PBE2_SET,ERR_R_MALLOC_FAILURE);
+ /* Encode PBKDF2PARAM into parameter of pbe2 */
- err:
- PBE2PARAM_free(pbe2);
- /* Note 'scheme' is freed as part of pbe2 */
- M_ASN1_OCTET_STRING_free(osalt);
- PBKDF2PARAM_free(kdf);
- X509_ALGOR_free(kalg);
- X509_ALGOR_free(ret);
+ if (!ASN1_TYPE_pack_sequence(ASN1_ITEM_rptr(PBKDF2PARAM), kdf,
+ &keyfunc->parameter))
+ goto merr;
- return NULL;
+ PBKDF2PARAM_free(kdf);
+ return keyfunc;
+ merr:
+ ASN1err(ASN1_F_PKCS5_PBKDF2_SET, ERR_R_MALLOC_FAILURE);
+ PBKDF2PARAM_free(kdf);
+ X509_ALGOR_free(keyfunc);
+ return NULL;
}
projects / openssl.git / blobdiff