2 * Copyright 1999-2023 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
11 #include "internal/cryptlib.h"
12 #include <openssl/asn1t.h>
13 #include <openssl/x509.h>
14 #include <openssl/rand.h>
15 #include "crypto/evp.h"
17 /* PKCS#5 password based encryption structure */
19 ASN1_SEQUENCE(PBEPARAM) = {
20 ASN1_SIMPLE(PBEPARAM, salt, ASN1_OCTET_STRING),
21 ASN1_SIMPLE(PBEPARAM, iter, ASN1_INTEGER)
22 } ASN1_SEQUENCE_END(PBEPARAM)
24 IMPLEMENT_ASN1_FUNCTIONS(PBEPARAM)
26 /* Set an algorithm identifier for a PKCS#5 PBE algorithm */
28 int PKCS5_pbe_set0_algor_ex(X509_ALGOR *algor, int alg, int iter,
29 const unsigned char *salt, int saltlen,
33 ASN1_STRING *pbe_str = NULL;
34 unsigned char *sstr = NULL;
38 /* ERR_R_ASN1_LIB, because PBEPARAM_new() is defined in crypto/asn1 */
39 ERR_raise(ERR_LIB_ASN1, ERR_R_ASN1_LIB);
43 iter = PKCS5_DEFAULT_ITER;
44 if (!ASN1_INTEGER_set(pbe->iter, iter)) {
45 ERR_raise(ERR_LIB_ASN1, ERR_R_ASN1_LIB);
49 saltlen = PKCS5_DEFAULT_PBE1_SALT_LEN;
53 sstr = OPENSSL_malloc(saltlen);
57 memcpy(sstr, salt, saltlen);
58 else if (RAND_bytes_ex(ctx, sstr, saltlen, 0) <= 0)
61 ASN1_STRING_set0(pbe->salt, sstr, saltlen);
64 if (!ASN1_item_pack(pbe, ASN1_ITEM_rptr(PBEPARAM), &pbe_str)) {
65 ERR_raise(ERR_LIB_ASN1, ERR_R_ASN1_LIB);
72 if (X509_ALGOR_set0(algor, OBJ_nid2obj(alg), V_ASN1_SEQUENCE, pbe_str))
78 ASN1_STRING_free(pbe_str);
82 int PKCS5_pbe_set0_algor(X509_ALGOR *algor, int alg, int iter,
83 const unsigned char *salt, int saltlen)
85 return PKCS5_pbe_set0_algor_ex(algor, alg, iter, salt, saltlen, NULL);
88 /* Return an algorithm identifier for a PKCS#5 PBE algorithm */
90 X509_ALGOR *PKCS5_pbe_set_ex(int alg, int iter,
91 const unsigned char *salt, int saltlen,
95 ret = X509_ALGOR_new();
97 ERR_raise(ERR_LIB_ASN1, ERR_R_X509_LIB);
101 if (PKCS5_pbe_set0_algor_ex(ret, alg, iter, salt, saltlen, ctx))
104 X509_ALGOR_free(ret);
108 X509_ALGOR *PKCS5_pbe_set(int alg, int iter,
109 const unsigned char *salt, int saltlen)
111 return PKCS5_pbe_set_ex(alg, iter, salt, saltlen, NULL);