[thirdparty/openssl.git] / crypto / evp / p5_crpt2.c

/*
 * Copyright 1999-2023 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
 */

#include <stdio.h>
#include <stdlib.h>
#include "internal/cryptlib.h"
#include <openssl/x509.h>
#include <openssl/evp.h>
#include <openssl/kdf.h>
#include <openssl/hmac.h>
#include <openssl/trace.h>
#include <openssl/core_names.h>
#include "crypto/evp.h"
#include "evp_local.h"

int ossl_pkcs5_pbkdf2_hmac_ex(const char *pass, int passlen,
                              const unsigned char *salt, int saltlen, int iter,
                              const EVP_MD *digest, int keylen, unsigned char *out,
                              OSSL_LIB_CTX *libctx, const char *propq)
{
    const char *empty = "";
    int rv = 1, mode = 1;
    EVP_KDF *kdf;
    EVP_KDF_CTX *kctx;
    const char *mdname = EVP_MD_get0_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(libctx, OSSL_KDF_NAME_PBKDF2, propq);
    if (kdf == NULL)
         return 0;
    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, 0);
    *p = OSSL_PARAM_construct_end();
    if (EVP_KDF_derive(kctx, out, keylen, params) != 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;
}

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)
{
    return ossl_pkcs5_pbkdf2_hmac_ex(pass, passlen, salt, saltlen, iter, digest,
                                     keylen, out, NULL, NULL);
}


int PKCS5_PBKDF2_HMAC_SHA1(const char *pass, int passlen,
                           const unsigned char *salt, int saltlen, int iter,
                           int keylen, unsigned char *out)
{
    EVP_MD *digest;
    int r = 0;

    if ((digest = EVP_MD_fetch(NULL, SN_sha1, NULL)) != NULL)
        r = ossl_pkcs5_pbkdf2_hmac_ex(pass, passlen, salt, saltlen, iter,
                                      digest, keylen, out, NULL, NULL);
    EVP_MD_free(digest);
    return r;
}

/*
 * 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_ex(EVP_CIPHER_CTX *ctx, const char *pass, int passlen,
                             ASN1_TYPE *param, const EVP_CIPHER *c,
                             const EVP_MD *md, int en_de,
                             OSSL_LIB_CTX *libctx, const char *propq)
{
    PBE2PARAM *pbe2 = NULL;
    char ciph_name[80];
    const EVP_CIPHER *cipher = NULL;
    EVP_CIPHER *cipher_fetch = NULL;
    EVP_PBE_KEYGEN_EX *kdf;

    int rv = 0;

    pbe2 = ASN1_TYPE_unpack_sequence(ASN1_ITEM_rptr(PBE2PARAM), param);
    if (pbe2 == NULL) {
        ERR_raise(ERR_LIB_EVP, EVP_R_DECODE_ERROR);
        goto err;
    }

    /* See if we recognise the key derivation function */
    if (!EVP_PBE_find_ex(EVP_PBE_TYPE_KDF, OBJ_obj2nid(pbe2->keyfunc->algorithm),
                         NULL, NULL, NULL, &kdf)) {
        ERR_raise(ERR_LIB_EVP, EVP_R_UNSUPPORTED_KEY_DERIVATION_FUNCTION);
        goto err;
    }

    /*
     * lets see if we recognise the encryption algorithm.
     */
    if (OBJ_obj2txt(ciph_name, sizeof(ciph_name), pbe2->encryption->algorithm, 0) <= 0) {
        ERR_raise(ERR_LIB_EVP, EVP_R_UNSUPPORTED_CIPHER);
        goto err;
    }

    (void)ERR_set_mark();
    cipher = cipher_fetch = EVP_CIPHER_fetch(libctx, ciph_name, propq);
    /* Fallback to legacy method */
    if (cipher == NULL)
        cipher = EVP_get_cipherbyname(ciph_name);

    if (cipher == NULL) {
        (void)ERR_clear_last_mark();
        ERR_raise(ERR_LIB_EVP, EVP_R_UNSUPPORTED_CIPHER);
        goto err;
    }
    (void)ERR_pop_to_mark();

    /* 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) {
        ERR_raise(ERR_LIB_EVP, EVP_R_CIPHER_PARAMETER_ERROR);
        goto err;
    }
    rv = kdf(ctx, pass, passlen, pbe2->keyfunc->parameter, NULL, NULL, en_de, libctx, propq);
 err:
    EVP_CIPHER_free(cipher_fetch);
    PBE2PARAM_free(pbe2);
    return rv;
}

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)
{
    return PKCS5_v2_PBE_keyivgen_ex(ctx, pass, passlen, param, c, md, en_de, NULL, NULL);
}

int PKCS5_v2_PBKDF2_keyivgen_ex(EVP_CIPHER_CTX *ctx, const char *pass,
                                int passlen, ASN1_TYPE *param,
                                const EVP_CIPHER *c, const EVP_MD *md, int en_de,
                                OSSL_LIB_CTX *libctx, const char *propq)
{
    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 = NULL;
    EVP_MD *prfmd_fetch = NULL;

    if (EVP_CIPHER_CTX_get0_cipher(ctx) == NULL) {
        ERR_raise(ERR_LIB_EVP, EVP_R_NO_CIPHER_SET);
        goto err;
    }
    keylen = EVP_CIPHER_CTX_get_key_length(ctx);
    OPENSSL_assert(keylen <= sizeof(key));

    /* Decode parameter */

    kdf = ASN1_TYPE_unpack_sequence(ASN1_ITEM_rptr(PBKDF2PARAM), param);

    if (kdf == NULL) {
        ERR_raise(ERR_LIB_EVP, EVP_R_DECODE_ERROR);
        goto err;
    }

    t = EVP_CIPHER_CTX_get_key_length(ctx);
    if (t < 0) {
        ERR_raise(ERR_LIB_EVP, 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)) {
        ERR_raise(ERR_LIB_EVP, 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)) {
        ERR_raise(ERR_LIB_EVP, EVP_R_UNSUPPORTED_PRF);
        goto err;
    }

    (void)ERR_set_mark();
    prfmd = prfmd_fetch = EVP_MD_fetch(libctx, OBJ_nid2sn(hmac_md_nid), propq);
    if (prfmd == NULL)
        prfmd = EVP_get_digestbynid(hmac_md_nid);
    if (prfmd == NULL) {
        (void)ERR_clear_last_mark();
        ERR_raise(ERR_LIB_EVP, EVP_R_UNSUPPORTED_PRF);
        goto err;
    }
    (void)ERR_pop_to_mark();

    if (kdf->salt->type != V_ASN1_OCTET_STRING) {
        ERR_raise(ERR_LIB_EVP, 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 (!ossl_pkcs5_pbkdf2_hmac_ex(pass, passlen, salt, saltlen, iter, prfmd,
                                   keylen, key, libctx, propq))
        goto err;
    rv = EVP_CipherInit_ex(ctx, NULL, NULL, key, NULL, en_de);
 err:
    OPENSSL_cleanse(key, keylen);
    PBKDF2PARAM_free(kdf);
    EVP_MD_free(prfmd_fetch);
    return rv;
}

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)
{
    return PKCS5_v2_PBKDF2_keyivgen_ex(ctx, pass, passlen, param, c, md, en_de,
                                       NULL, NULL);
}
Commit	Line	Data
0f113f3e	1	/*
da1c088f	2	* Copyright 1999-2023 The OpenSSL Project Authors. All Rights Reserved.
97e4a932	3	*
4a8b0c55	4	* Licensed under the Apache License 2.0 (the "License"). You may not use
62867571 RS	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
97e4a932	8	*/
62867571	9
97e4a932 DSH	10	#include <stdio.h>
97e4a932 DSH	11	#include <stdlib.h>
b39fc560	12	#include "internal/cryptlib.h"
5a285add DM	13	#include <openssl/x509.h>
	14	#include <openssl/evp.h>
	15	#include <openssl/kdf.h>
	16	#include <openssl/hmac.h>
3a9b3d2d	17	#include <openssl/trace.h>
7707526b	18	#include <openssl/core_names.h>
25f2138b	19	#include "crypto/evp.h"
706457b7	20	#include "evp_local.h"
97e4a932	21
4e17fb00 SL	22	int ossl_pkcs5_pbkdf2_hmac_ex(const char *pass, int passlen,
4e17fb00 SL	23	const unsigned char *salt, int saltlen, int iter,
b536880c	24	const EVP_MD digest, int keylen, unsigned char out,
4e17fb00	25	OSSL_LIB_CTX libctx, const char propq)
0f113f3e	26	{
fa013b65	27	const char *empty = "";
7707526b P	28	int rv = 1, mode = 1;
7707526b P	29	EVP_KDF *kdf;
5a285add	30	EVP_KDF_CTX *kctx;
ed576acd	31	const char *mdname = EVP_MD_get0_name(digest);
7707526b	32	OSSL_PARAM params[6], *p = params;
0f113f3e	33
5a285add	34	/* Keep documented behaviour. */
fa013b65 PB	35	if (pass == NULL) {
fa013b65 PB	36	pass = empty;
0f113f3e	37	passlen = 0;
fa013b65	38	} else if (passlen == -1) {
0f113f3e	39	passlen = strlen(pass);
fa013b65	40	}
5a285add DM	41	if (salt == NULL && saltlen == 0)
	42	salt = (unsigned char *)empty;
	43
5ccada09	44	kdf = EVP_KDF_fetch(libctx, OSSL_KDF_NAME_PBKDF2, propq);
5f1424c6	45	if (kdf == NULL)
5f1424c6	46	return 0;
660c5344	47	kctx = EVP_KDF_CTX_new(kdf);
7707526b	48	EVP_KDF_free(kdf);
5a285add	49	if (kctx == NULL)
0f113f3e	50	return 0;
7707526b P	51	*p++ = OSSL_PARAM_construct_octet_string(OSSL_KDF_PARAM_PASSWORD,
	52	(char *)pass, (size_t)passlen);
	53	*p++ = OSSL_PARAM_construct_int(OSSL_KDF_PARAM_PKCS5, &mode);
	54	*p++ = OSSL_PARAM_construct_octet_string(OSSL_KDF_PARAM_SALT,
	55	(unsigned char *)salt, saltlen);
	56	*p++ = OSSL_PARAM_construct_int(OSSL_KDF_PARAM_ITER, &iter);
	57	*p++ = OSSL_PARAM_construct_utf8_string(OSSL_KDF_PARAM_DIGEST,
8b6ffd40	58	(char *)mdname, 0);
7707526b	59	*p = OSSL_PARAM_construct_end();
36fae6e8	60	if (EVP_KDF_derive(kctx, out, keylen, params) != 1)
5a285add DM	61	rv = 0;
5a285add DM	62
660c5344	63	EVP_KDF_CTX_free(kctx);
5a285add	64
3a9b3d2d RL	65	OSSL_TRACE_BEGIN(PKCS5V2) {
	66	BIO_printf(trc_out, "Password:\n");
	67	BIO_hex_string(trc_out,
	68	0, passlen, pass, passlen);
	69	BIO_printf(trc_out, "\n");
	70	BIO_printf(trc_out, "Salt:\n");
	71	BIO_hex_string(trc_out,
	72	0, saltlen, salt, saltlen);
	73	BIO_printf(trc_out, "\n");
	74	BIO_printf(trc_out, "Iteration count %d\n", iter);
	75	BIO_printf(trc_out, "Key:\n");
	76	BIO_hex_string(trc_out,
	77	0, keylen, out, keylen);
	78	BIO_printf(trc_out, "\n");
	79	} OSSL_TRACE_END(PKCS5V2);
5a285add	80	return rv;
0f113f3e	81	}
856640b5	82
5ccada09 SL	83	int PKCS5_PBKDF2_HMAC(const char pass, int passlen, const unsigned char salt,
	84	int saltlen, int iter, const EVP_MD *digest, int keylen,
	85	unsigned char *out)
	86	{
4e17fb00 SL	87	return ossl_pkcs5_pbkdf2_hmac_ex(pass, passlen, salt, saltlen, iter, digest,
4e17fb00 SL	88	keylen, out, NULL, NULL);
5ccada09 SL	89	}
	90
	91
856640b5	92	int PKCS5_PBKDF2_HMAC_SHA1(const char *pass, int passlen,
0f113f3e MC	93	const unsigned char *salt, int saltlen, int iter,
	94	int keylen, unsigned char *out)
	95	{
2ec64916 P	96	EVP_MD *digest;
	97	int r = 0;
	98
	99	if ((digest = EVP_MD_fetch(NULL, SN_sha1, NULL)) != NULL)
	100	r = ossl_pkcs5_pbkdf2_hmac_ex(pass, passlen, salt, saltlen, iter,
	101	digest, keylen, out, NULL, NULL);
	102	EVP_MD_free(digest);
	103	return r;
0f113f3e MC	104	}
0f113f3e MC	105
0f113f3e MC	106	/*
	107	* Now the key derivation function itself. This is a bit evil because it has
	108	* to check the ASN1 parameters are valid: and there are quite a few of
	109	* them...
97e4a932 DSH	110	*/
97e4a932 DSH	111
b536880c JS	112	int PKCS5_v2_PBE_keyivgen_ex(EVP_CIPHER_CTX ctx, const char pass, int passlen,
	113	ASN1_TYPE param, const EVP_CIPHER c,
	114	const EVP_MD *md, int en_de,
	115	OSSL_LIB_CTX libctx, const char propq)
97e4a932	116	{
0f113f3e	117	PBE2PARAM *pbe2 = NULL;
b536880c JS	118	char ciph_name[80];
	119	const EVP_CIPHER *cipher = NULL;
	120	EVP_CIPHER *cipher_fetch = NULL;
	121	EVP_PBE_KEYGEN_EX *kdf;
0f113f3e MC	122
	123	int rv = 0;
	124
e93c8748 DSH	125	pbe2 = ASN1_TYPE_unpack_sequence(ASN1_ITEM_rptr(PBE2PARAM), param);
e93c8748 DSH	126	if (pbe2 == NULL) {
9311d0c4	127	ERR_raise(ERR_LIB_EVP, EVP_R_DECODE_ERROR);
0f113f3e MC	128	goto err;
	129	}
	130
	131	/* See if we recognise the key derivation function */
b536880c JS	132	if (!EVP_PBE_find_ex(EVP_PBE_TYPE_KDF, OBJ_obj2nid(pbe2->keyfunc->algorithm),
b536880c JS	133	NULL, NULL, NULL, &kdf)) {
9311d0c4	134	ERR_raise(ERR_LIB_EVP, EVP_R_UNSUPPORTED_KEY_DERIVATION_FUNCTION);
0f113f3e MC	135	goto err;
	136	}
	137
	138	/*
	139	* lets see if we recognise the encryption algorithm.
	140	*/
b536880c JS	141	if (OBJ_obj2txt(ciph_name, sizeof(ciph_name), pbe2->encryption->algorithm, 0) <= 0) {
	142	ERR_raise(ERR_LIB_EVP, EVP_R_UNSUPPORTED_CIPHER);
	143	goto err;
	144	}
0f113f3e	145
3c15d677	146	(void)ERR_set_mark();
b536880c JS	147	cipher = cipher_fetch = EVP_CIPHER_fetch(libctx, ciph_name, propq);
	148	/* Fallback to legacy method */
	149	if (cipher == NULL)
	150	cipher = EVP_get_cipherbyname(ciph_name);
0f113f3e	151
b536880c	152	if (cipher == NULL) {
3c15d677	153	(void)ERR_clear_last_mark();
9311d0c4	154	ERR_raise(ERR_LIB_EVP, EVP_R_UNSUPPORTED_CIPHER);
0f113f3e MC	155	goto err;
0f113f3e MC	156	}
3c15d677	157	(void)ERR_pop_to_mark();
0f113f3e MC	158
	159	/* Fixup cipher based on AlgorithmIdentifier */
	160	if (!EVP_CipherInit_ex(ctx, cipher, NULL, NULL, NULL, en_de))
	161	goto err;
114d99b4	162	if (EVP_CIPHER_asn1_to_param(ctx, pbe2->encryption->parameter) <= 0) {
9311d0c4	163	ERR_raise(ERR_LIB_EVP, EVP_R_CIPHER_PARAMETER_ERROR);
0f113f3e MC	164	goto err;
0f113f3e MC	165	}
b536880c	166	rv = kdf(ctx, pass, passlen, pbe2->keyfunc->parameter, NULL, NULL, en_de, libctx, propq);
0f113f3e	167	err:
b536880c	168	EVP_CIPHER_free(cipher_fetch);
0f113f3e MC	169	PBE2PARAM_free(pbe2);
0f113f3e MC	170	return rv;
3d63b396 DSH	171	}
3d63b396 DSH	172
b536880c JS	173	int PKCS5_v2_PBE_keyivgen(EVP_CIPHER_CTX ctx, const char pass, int passlen,
	174	ASN1_TYPE param, const EVP_CIPHER c,
	175	const EVP_MD *md, int en_de)
	176	{
	177	return PKCS5_v2_PBE_keyivgen_ex(ctx, pass, passlen, param, c, md, en_de, NULL, NULL);
	178	}
	179
	180	int PKCS5_v2_PBKDF2_keyivgen_ex(EVP_CIPHER_CTX ctx, const char pass,
	181	int passlen, ASN1_TYPE *param,
	182	const EVP_CIPHER c, const EVP_MD md, int en_de,
	183	OSSL_LIB_CTX libctx, const char propq)
3d63b396	184	{
0f113f3e	185	unsigned char *salt, key[EVP_MAX_KEY_LENGTH];
ea053ec9	186	int saltlen, iter, t;
0f113f3e MC	187	int rv = 0;
	188	unsigned int keylen = 0;
	189	int prf_nid, hmac_md_nid;
	190	PBKDF2PARAM *kdf = NULL;
b536880c JS	191	const EVP_MD *prfmd = NULL;
b536880c JS	192	EVP_MD *prfmd_fetch = NULL;
0f113f3e	193
f6c95e46	194	if (EVP_CIPHER_CTX_get0_cipher(ctx) == NULL) {
9311d0c4	195	ERR_raise(ERR_LIB_EVP, EVP_R_NO_CIPHER_SET);
0f113f3e MC	196	goto err;
0f113f3e MC	197	}
ed576acd	198	keylen = EVP_CIPHER_CTX_get_key_length(ctx);
cbe29648	199	OPENSSL_assert(keylen <= sizeof(key));
0f113f3e MC	200
	201	/* Decode parameter */
	202
e93c8748	203	kdf = ASN1_TYPE_unpack_sequence(ASN1_ITEM_rptr(PBKDF2PARAM), param);
0f113f3e	204
e93c8748	205	if (kdf == NULL) {
9311d0c4	206	ERR_raise(ERR_LIB_EVP, EVP_R_DECODE_ERROR);
0f113f3e MC	207	goto err;
	208	}
	209
ed576acd	210	t = EVP_CIPHER_CTX_get_key_length(ctx);
ea053ec9	211	if (t < 0) {
9311d0c4	212	ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_KEY_LENGTH);
ea053ec9 P	213	goto err;
	214	}
	215	keylen = t;
0f113f3e MC	216
	217	/* Now check the parameters of the kdf */
	218
	219	if (kdf->keylength && (ASN1_INTEGER_get(kdf->keylength) != (int)keylen)) {
9311d0c4	220	ERR_raise(ERR_LIB_EVP, EVP_R_UNSUPPORTED_KEYLENGTH);
0f113f3e MC	221	goto err;
	222	}
	223
	224	if (kdf->prf)
	225	prf_nid = OBJ_obj2nid(kdf->prf->algorithm);
	226	else
	227	prf_nid = NID_hmacWithSHA1;
	228
	229	if (!EVP_PBE_find(EVP_PBE_TYPE_PRF, prf_nid, NULL, &hmac_md_nid, 0)) {
9311d0c4	230	ERR_raise(ERR_LIB_EVP, EVP_R_UNSUPPORTED_PRF);
0f113f3e MC	231	goto err;
	232	}
	233
dc4ccc70	234	(void)ERR_set_mark();
b536880c JS	235	prfmd = prfmd_fetch = EVP_MD_fetch(libctx, OBJ_nid2sn(hmac_md_nid), propq);
	236	if (prfmd == NULL)
	237	prfmd = EVP_get_digestbynid(hmac_md_nid);
0f113f3e	238	if (prfmd == NULL) {
dc4ccc70	239	(void)ERR_clear_last_mark();
9311d0c4	240	ERR_raise(ERR_LIB_EVP, EVP_R_UNSUPPORTED_PRF);
0f113f3e MC	241	goto err;
0f113f3e MC	242	}
dc4ccc70	243	(void)ERR_pop_to_mark();
0f113f3e MC	244
0f113f3e MC	245	if (kdf->salt->type != V_ASN1_OCTET_STRING) {
9311d0c4	246	ERR_raise(ERR_LIB_EVP, EVP_R_UNSUPPORTED_SALT_TYPE);
0f113f3e MC	247	goto err;
	248	}
	249
	250	/* it seems that its all OK */
	251	salt = kdf->salt->value.octet_string->data;
	252	saltlen = kdf->salt->value.octet_string->length;
	253	iter = ASN1_INTEGER_get(kdf->iter);
b536880c JS	254	if (!ossl_pkcs5_pbkdf2_hmac_ex(pass, passlen, salt, saltlen, iter, prfmd,
b536880c JS	255	keylen, key, libctx, propq))
0f113f3e MC	256	goto err;
	257	rv = EVP_CipherInit_ex(ctx, NULL, NULL, key, NULL, en_de);
	258	err:
	259	OPENSSL_cleanse(key, keylen);
	260	PBKDF2PARAM_free(kdf);
b536880c	261	EVP_MD_free(prfmd_fetch);
0f113f3e	262	return rv;
97e4a932	263	}
b536880c JS	264
	265	int PKCS5_v2_PBKDF2_keyivgen(EVP_CIPHER_CTX ctx, const char pass,
	266	int passlen, ASN1_TYPE *param,
	267	const EVP_CIPHER c, const EVP_MD md, int en_de)
	268	{
	269	return PKCS5_v2_PBKDF2_keyivgen_ex(ctx, pass, passlen, param, c, md, en_de,
	270	NULL, NULL);
	271	}