/src/openssl/crypto/asn1/p5_scrypt.c

Source
/*
 * Copyright 2015-2025 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 "internal/cryptlib.h"
#include <openssl/asn1t.h>
#include <openssl/core_names.h>
#include <openssl/err.h>
#include <openssl/evp.h>
#include <openssl/x509.h>
#include <openssl/rand.h>
#include "crypto/evp.h"

#include <crypto/asn1.h>

#ifndef OPENSSL_NO_SCRYPT
/* PKCS#5 scrypt password based encryption structures */

ASN1_SEQUENCE(SCRYPT_PARAMS) = {
    ASN1_SIMPLE(SCRYPT_PARAMS, salt, ASN1_OCTET_STRING),
    ASN1_SIMPLE(SCRYPT_PARAMS, costParameter, ASN1_INTEGER),
    ASN1_SIMPLE(SCRYPT_PARAMS, blockSize, ASN1_INTEGER),
    ASN1_SIMPLE(SCRYPT_PARAMS, parallelizationParameter, ASN1_INTEGER),
    ASN1_OPT(SCRYPT_PARAMS, keyLength, ASN1_INTEGER),
} ASN1_SEQUENCE_END(SCRYPT_PARAMS)

IMPLEMENT_ASN1_FUNCTIONS(SCRYPT_PARAMS)

static X509_ALGOR *pkcs5_scrypt_set(const unsigned char *salt, int saltlen,
    size_t keylen, uint64_t N, uint64_t r,
    uint64_t p);

/*
 * Return an algorithm identifier for a PKCS#5 v2.0 PBE algorithm using scrypt
 */

X509_ALGOR *PKCS5_pbe2_set_scrypt(const EVP_CIPHER *cipher,
    const unsigned char *salt, int saltlen,
    unsigned char *aiv, uint64_t N, uint64_t r,
    uint64_t p)
{
    X509_ALGOR *scheme = NULL, *ret = NULL;
    int alg_nid;
    size_t keylen = 0;
    EVP_CIPHER_CTX *ctx = NULL;
    unsigned char iv[EVP_MAX_IV_LENGTH];
    PBE2PARAM *pbe2 = NULL;

    if (!cipher) {
        ERR_raise(ERR_LIB_ASN1, ERR_R_PASSED_NULL_PARAMETER);
        goto err;
    }

    if (EVP_PBE_scrypt(NULL, 0, NULL, 0, N, r, p, 0, NULL, 0) == 0) {
        ERR_raise(ERR_LIB_ASN1, ASN1_R_INVALID_SCRYPT_PARAMETERS);
        goto err;
    }

    alg_nid = EVP_CIPHER_get_type(cipher);
    if (alg_nid == NID_undef) {
        ERR_raise(ERR_LIB_ASN1, ASN1_R_CIPHER_HAS_NO_OBJECT_IDENTIFIER);
        goto err;
    }

    pbe2 = PBE2PARAM_new();
    if (pbe2 == NULL) {
        ERR_raise(ERR_LIB_ASN1, ERR_R_ASN1_LIB);
        goto err;
    }

    /* Setup the AlgorithmIdentifier for the encryption scheme */
    scheme = pbe2->encryption;

    scheme->algorithm = OBJ_nid2obj(alg_nid);
    scheme->parameter = ASN1_TYPE_new();
    if (scheme->parameter == NULL) {
        ERR_raise(ERR_LIB_ASN1, ERR_R_ASN1_LIB);
        goto err;
    }

    /* Create random IV */
    if (EVP_CIPHER_get_iv_length(cipher)) {
        if (aiv)
            memcpy(iv, aiv, EVP_CIPHER_get_iv_length(cipher));
        else if (RAND_bytes(iv, EVP_CIPHER_get_iv_length(cipher)) <= 0)
            goto err;
    }

    ctx = EVP_CIPHER_CTX_new();
    if (ctx == NULL) {
        ERR_raise(ERR_LIB_ASN1, ERR_R_EVP_LIB);
        goto err;
    }

    /* Dummy cipherinit to just setup the IV */
    if (EVP_CipherInit_ex(ctx, cipher, NULL, NULL, iv, 0) == 0)
        goto err;
    if (EVP_CIPHER_param_to_asn1(ctx, scheme->parameter) <= 0) {
        ERR_raise(ERR_LIB_ASN1, ASN1_R_ERROR_SETTING_CIPHER_PARAMS);
        goto err;
    }
    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_get_key_length(cipher);

    /* Setup keyfunc */

    X509_ALGOR_free(pbe2->keyfunc);

    pbe2->keyfunc = pkcs5_scrypt_set(salt, saltlen, keylen, N, r, p);

    if (pbe2->keyfunc == NULL) {
        ERR_raise(ERR_LIB_ASN1, ERR_R_ASN1_LIB);
        goto err;
    }

    /* Now set up top level AlgorithmIdentifier */

    ret = X509_ALGOR_new();
    if (ret == NULL) {
        ERR_raise(ERR_LIB_ASN1, ERR_R_ASN1_LIB);
        goto err;
    }

    ret->algorithm = OBJ_nid2obj(NID_pbes2);

    /* Encode PBE2PARAM into parameter */

    if (ASN1_TYPE_pack_sequence(ASN1_ITEM_rptr(PBE2PARAM), pbe2,
            &ret->parameter)
        == NULL) {
        ERR_raise(ERR_LIB_ASN1, ERR_R_ASN1_LIB);
        goto err;
    }

    PBE2PARAM_free(pbe2);
    pbe2 = NULL;

    return ret;

err:
    PBE2PARAM_free(pbe2);
    X509_ALGOR_free(ret);
    EVP_CIPHER_CTX_free(ctx);

    return NULL;
}

static X509_ALGOR *pkcs5_scrypt_set(const unsigned char *salt, int saltlen,
    size_t keylen, uint64_t N, uint64_t r,
    uint64_t p)
{
    X509_ALGOR *keyfunc = NULL;
    SCRYPT_PARAMS *sparam = SCRYPT_PARAMS_new();

    if (sparam == NULL) {
        ERR_raise(ERR_LIB_ASN1, ERR_R_ASN1_LIB);
        goto err;
    }

    if (!saltlen)
        saltlen = PKCS5_DEFAULT_PBE2_SALT_LEN;

    /* This will either copy salt or grow the buffer */
    if (ASN1_STRING_set(sparam->salt, salt, saltlen) == 0) {
        ERR_raise(ERR_LIB_ASN1, ERR_R_ASN1_LIB);
        goto err;
    }

    if (salt == NULL && RAND_bytes(sparam->salt->data, saltlen) <= 0)
        goto err;

    if (ASN1_INTEGER_set_uint64(sparam->costParameter, N) == 0) {
        ERR_raise(ERR_LIB_ASN1, ERR_R_ASN1_LIB);
        goto err;
    }

    if (ASN1_INTEGER_set_uint64(sparam->blockSize, r) == 0) {
        ERR_raise(ERR_LIB_ASN1, ERR_R_ASN1_LIB);
        goto err;
    }

    if (ASN1_INTEGER_set_uint64(sparam->parallelizationParameter, p) == 0) {
        ERR_raise(ERR_LIB_ASN1, ERR_R_ASN1_LIB);
        goto err;
    }

    /* If have a key len set it up */

    if (keylen > 0) {
        sparam->keyLength = ASN1_INTEGER_new();
        if (sparam->keyLength == NULL) {
            ERR_raise(ERR_LIB_ASN1, ERR_R_ASN1_LIB);
            goto err;
        }
        if (ASN1_INTEGER_set_int64(sparam->keyLength, keylen) == 0) {
            ERR_raise(ERR_LIB_ASN1, ERR_R_ASN1_LIB);
            goto err;
        }
    }

    /* Finally setup the keyfunc structure */

    keyfunc = X509_ALGOR_new();
    if (keyfunc == NULL) {
        ERR_raise(ERR_LIB_ASN1, ERR_R_ASN1_LIB);
        goto err;
    }

    keyfunc->algorithm = OBJ_nid2obj(NID_id_scrypt);

    /* Encode SCRYPT_PARAMS into parameter of pbe2 */

    if (ASN1_TYPE_pack_sequence(ASN1_ITEM_rptr(SCRYPT_PARAMS), sparam,
            &keyfunc->parameter)
        == NULL) {
        ERR_raise(ERR_LIB_ASN1, ERR_R_ASN1_LIB);
        goto err;
    }

    SCRYPT_PARAMS_free(sparam);
    return keyfunc;

err:
    SCRYPT_PARAMS_free(sparam);
    X509_ALGOR_free(keyfunc);
    return NULL;
}

int PKCS5_v2_scrypt_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];
    uint64_t p, r, N;
    size_t saltlen;
    size_t keylen = 0;
    int t, rv = 0;
    SCRYPT_PARAMS *sparam = NULL;

    if (EVP_CIPHER_CTX_get0_cipher(ctx) == NULL) {
        ERR_raise(ERR_LIB_EVP, EVP_R_NO_CIPHER_SET);
        goto err;
    }

    /* Decode parameter */

    sparam = ASN1_TYPE_unpack_sequence(ASN1_ITEM_rptr(SCRYPT_PARAMS), param);

    if (sparam == 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 sparam */

    if (sparam->keyLength) {
        uint64_t spkeylen;
        if ((ASN1_INTEGER_get_uint64(&spkeylen, sparam->keyLength) == 0)
            || (spkeylen != keylen)) {
            ERR_raise(ERR_LIB_EVP, EVP_R_UNSUPPORTED_KEYLENGTH);
            goto err;
        }
    }
    /* Check all parameters fit in uint64_t and are acceptable to scrypt */
    if (ASN1_INTEGER_get_uint64(&N, sparam->costParameter) == 0
        || ASN1_INTEGER_get_uint64(&r, sparam->blockSize) == 0
        || ASN1_INTEGER_get_uint64(&p, sparam->parallelizationParameter) == 0
        || EVP_PBE_scrypt_ex(NULL, 0, NULL, 0, N, r, p, 0, NULL, 0,
               libctx, propq)
            == 0) {
        ERR_raise(ERR_LIB_EVP, EVP_R_ILLEGAL_SCRYPT_PARAMETERS);
        goto err;
    }

    /* it seems that its all OK */

    salt = sparam->salt->data;
    saltlen = sparam->salt->length;
    if (EVP_PBE_scrypt_ex(pass, passlen, salt, saltlen, N, r, p, 0, key,
            keylen, libctx, propq)
        == 0)
        goto err;
    rv = EVP_CipherInit_ex(ctx, NULL, NULL, key, NULL, en_de);
err:
    if (keylen)
        OPENSSL_cleanse(key, keylen);
    SCRYPT_PARAMS_free(sparam);
    return rv;
}

int PKCS5_v2_scrypt_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_scrypt_keyivgen_ex(ctx, pass, passlen, param, c, md, en_de, NULL, NULL);
}

#endif /* OPENSSL_NO_SCRYPT */

Coverage Report

Created: 2026-03-09 06:55

Line	Count	Source
1		/*
2		* Copyright 2015-2025 The OpenSSL Project Authors. All Rights Reserved.
3		*
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
8		*/
9
10		#include <stdio.h>
11		#include "internal/cryptlib.h"
12		#include <openssl/asn1t.h>
13		#include <openssl/core_names.h>
14		#include <openssl/err.h>
15		#include <openssl/evp.h>
16		#include <openssl/x509.h>
17		#include <openssl/rand.h>
18		#include "crypto/evp.h"
19
20		#include <crypto/asn1.h>
21
22		#ifndef OPENSSL_NO_SCRYPT
23		/* PKCS#5 scrypt password based encryption structures */
24
25		ASN1_SEQUENCE(SCRYPT_PARAMS) = {
26		ASN1_SIMPLE(SCRYPT_PARAMS, salt, ASN1_OCTET_STRING),
27		ASN1_SIMPLE(SCRYPT_PARAMS, costParameter, ASN1_INTEGER),
28		ASN1_SIMPLE(SCRYPT_PARAMS, blockSize, ASN1_INTEGER),
29		ASN1_SIMPLE(SCRYPT_PARAMS, parallelizationParameter, ASN1_INTEGER),
30		ASN1_OPT(SCRYPT_PARAMS, keyLength, ASN1_INTEGER),
31	0	} ASN1_SEQUENCE_END(SCRYPT_PARAMS)
32	0
33	0	IMPLEMENT_ASN1_FUNCTIONS(SCRYPT_PARAMS)
34	0
35	0	static X509_ALGOR pkcs5_scrypt_set(const unsigned char salt, int saltlen,
36	0	size_t keylen, uint64_t N, uint64_t r,
37	0	uint64_t p);
38	0
39	0	/*
40	0	* Return an algorithm identifier for a PKCS#5 v2.0 PBE algorithm using scrypt
41	0	*/
42	0
43	0	X509_ALGOR PKCS5_pbe2_set_scrypt(const EVP_CIPHER cipher,
44	0	const unsigned char *salt, int saltlen,
45	0	unsigned char *aiv, uint64_t N, uint64_t r,
46	0	uint64_t p)
47	0	{
48	0	X509_ALGOR scheme = NULL, ret = NULL;
49	0	int alg_nid;
50	0	size_t keylen = 0;
51	0	EVP_CIPHER_CTX *ctx = NULL;
52	0	unsigned char iv[EVP_MAX_IV_LENGTH];
53	0	PBE2PARAM *pbe2 = NULL;
54
55	0	if (!cipher) {
56	0	ERR_raise(ERR_LIB_ASN1, ERR_R_PASSED_NULL_PARAMETER);
57	0	goto err;
58	0	}
59
60	0	if (EVP_PBE_scrypt(NULL, 0, NULL, 0, N, r, p, 0, NULL, 0) == 0) {
61	0	ERR_raise(ERR_LIB_ASN1, ASN1_R_INVALID_SCRYPT_PARAMETERS);
62	0	goto err;
63	0	}
64
65	0	alg_nid = EVP_CIPHER_get_type(cipher);
66	0	if (alg_nid == NID_undef) {
67	0	ERR_raise(ERR_LIB_ASN1, ASN1_R_CIPHER_HAS_NO_OBJECT_IDENTIFIER);
68	0	goto err;
69	0	}
70
71	0	pbe2 = PBE2PARAM_new();
72	0	if (pbe2 == NULL) {
73	0	ERR_raise(ERR_LIB_ASN1, ERR_R_ASN1_LIB);
74	0	goto err;
75	0	}
76
77		/* Setup the AlgorithmIdentifier for the encryption scheme */
78	0	scheme = pbe2->encryption;
79
80	0	scheme->algorithm = OBJ_nid2obj(alg_nid);
81	0	scheme->parameter = ASN1_TYPE_new();
82	0	if (scheme->parameter == NULL) {
83	0	ERR_raise(ERR_LIB_ASN1, ERR_R_ASN1_LIB);
84	0	goto err;
85	0	}
86
87		/* Create random IV */
88	0	if (EVP_CIPHER_get_iv_length(cipher)) {
89	0	if (aiv)
90	0	memcpy(iv, aiv, EVP_CIPHER_get_iv_length(cipher));
91	0	else if (RAND_bytes(iv, EVP_CIPHER_get_iv_length(cipher)) <= 0)
92	0	goto err;
93	0	}
94
95	0	ctx = EVP_CIPHER_CTX_new();
96	0	if (ctx == NULL) {
97	0	ERR_raise(ERR_LIB_ASN1, ERR_R_EVP_LIB);
98	0	goto err;
99	0	}
100
101		/* Dummy cipherinit to just setup the IV */
102	0	if (EVP_CipherInit_ex(ctx, cipher, NULL, NULL, iv, 0) == 0)
103	0	goto err;
104	0	if (EVP_CIPHER_param_to_asn1(ctx, scheme->parameter) <= 0) {
105	0	ERR_raise(ERR_LIB_ASN1, ASN1_R_ERROR_SETTING_CIPHER_PARAMS);
106	0	goto err;
107	0	}
108	0	EVP_CIPHER_CTX_free(ctx);
109	0	ctx = NULL;
110
111		/* If its RC2 then we'd better setup the key length */
112
113	0	if (alg_nid == NID_rc2_cbc)
114	0	keylen = EVP_CIPHER_get_key_length(cipher);
115
116		/* Setup keyfunc */
117
118	0	X509_ALGOR_free(pbe2->keyfunc);
119
120	0	pbe2->keyfunc = pkcs5_scrypt_set(salt, saltlen, keylen, N, r, p);
121
122	0	if (pbe2->keyfunc == NULL) {
123	0	ERR_raise(ERR_LIB_ASN1, ERR_R_ASN1_LIB);
124	0	goto err;
125	0	}
126
127		/* Now set up top level AlgorithmIdentifier */
128
129	0	ret = X509_ALGOR_new();
130	0	if (ret == NULL) {
131	0	ERR_raise(ERR_LIB_ASN1, ERR_R_ASN1_LIB);
132	0	goto err;
133	0	}
134
135	0	ret->algorithm = OBJ_nid2obj(NID_pbes2);
136
137		/* Encode PBE2PARAM into parameter */
138
139	0	if (ASN1_TYPE_pack_sequence(ASN1_ITEM_rptr(PBE2PARAM), pbe2,
140	0	&ret->parameter)
141	0	== NULL) {
142	0	ERR_raise(ERR_LIB_ASN1, ERR_R_ASN1_LIB);
143	0	goto err;
144	0	}
145
146	0	PBE2PARAM_free(pbe2);
147	0	pbe2 = NULL;
148
149	0	return ret;
150
151	0	err:
152	0	PBE2PARAM_free(pbe2);
153	0	X509_ALGOR_free(ret);
154	0	EVP_CIPHER_CTX_free(ctx);
155
156	0	return NULL;
157	0	}
158
159		static X509_ALGOR pkcs5_scrypt_set(const unsigned char salt, int saltlen,
160		size_t keylen, uint64_t N, uint64_t r,
161		uint64_t p)
162	0	{
163	0	X509_ALGOR *keyfunc = NULL;
164	0	SCRYPT_PARAMS *sparam = SCRYPT_PARAMS_new();
165
166	0	if (sparam == NULL) {
167	0	ERR_raise(ERR_LIB_ASN1, ERR_R_ASN1_LIB);
168	0	goto err;
169	0	}
170
171	0	if (!saltlen)
172	0	saltlen = PKCS5_DEFAULT_PBE2_SALT_LEN;
173
174		/* This will either copy salt or grow the buffer */
175	0	if (ASN1_STRING_set(sparam->salt, salt, saltlen) == 0) {
176	0	ERR_raise(ERR_LIB_ASN1, ERR_R_ASN1_LIB);
177	0	goto err;
178	0	}
179
180	0	if (salt == NULL && RAND_bytes(sparam->salt->data, saltlen) <= 0)
181	0	goto err;
182
183	0	if (ASN1_INTEGER_set_uint64(sparam->costParameter, N) == 0) {
184	0	ERR_raise(ERR_LIB_ASN1, ERR_R_ASN1_LIB);
185	0	goto err;
186	0	}
187
188	0	if (ASN1_INTEGER_set_uint64(sparam->blockSize, r) == 0) {
189	0	ERR_raise(ERR_LIB_ASN1, ERR_R_ASN1_LIB);
190	0	goto err;
191	0	}
192
193	0	if (ASN1_INTEGER_set_uint64(sparam->parallelizationParameter, p) == 0) {
194	0	ERR_raise(ERR_LIB_ASN1, ERR_R_ASN1_LIB);
195	0	goto err;
196	0	}
197
198		/* If have a key len set it up */
199
200	0	if (keylen > 0) {
201	0	sparam->keyLength = ASN1_INTEGER_new();
202	0	if (sparam->keyLength == NULL) {
203	0	ERR_raise(ERR_LIB_ASN1, ERR_R_ASN1_LIB);
204	0	goto err;
205	0	}
206	0	if (ASN1_INTEGER_set_int64(sparam->keyLength, keylen) == 0) {
207	0	ERR_raise(ERR_LIB_ASN1, ERR_R_ASN1_LIB);
208	0	goto err;
209	0	}
210	0	}
211
212		/* Finally setup the keyfunc structure */
213
214	0	keyfunc = X509_ALGOR_new();
215	0	if (keyfunc == NULL) {
216	0	ERR_raise(ERR_LIB_ASN1, ERR_R_ASN1_LIB);
217	0	goto err;
218	0	}
219
220	0	keyfunc->algorithm = OBJ_nid2obj(NID_id_scrypt);
221
222		/* Encode SCRYPT_PARAMS into parameter of pbe2 */
223
224	0	if (ASN1_TYPE_pack_sequence(ASN1_ITEM_rptr(SCRYPT_PARAMS), sparam,
225	0	&keyfunc->parameter)
226	0	== NULL) {
227	0	ERR_raise(ERR_LIB_ASN1, ERR_R_ASN1_LIB);
228	0	goto err;
229	0	}
230
231	0	SCRYPT_PARAMS_free(sparam);
232	0	return keyfunc;
233
234	0	err:
235	0	SCRYPT_PARAMS_free(sparam);
236	0	X509_ALGOR_free(keyfunc);
237	0	return NULL;
238	0	}
239
240		int PKCS5_v2_scrypt_keyivgen_ex(EVP_CIPHER_CTX ctx, const char pass,
241		int passlen, ASN1_TYPE *param,
242		const EVP_CIPHER c, const EVP_MD md, int en_de,
243		OSSL_LIB_CTX libctx, const char propq)
244	0	{
245	0	unsigned char *salt, key[EVP_MAX_KEY_LENGTH];
246	0	uint64_t p, r, N;
247	0	size_t saltlen;
248	0	size_t keylen = 0;
249	0	int t, rv = 0;
250	0	SCRYPT_PARAMS *sparam = NULL;
251
252	0	if (EVP_CIPHER_CTX_get0_cipher(ctx) == NULL) {
253	0	ERR_raise(ERR_LIB_EVP, EVP_R_NO_CIPHER_SET);
254	0	goto err;
255	0	}
256
257		/* Decode parameter */
258
259	0	sparam = ASN1_TYPE_unpack_sequence(ASN1_ITEM_rptr(SCRYPT_PARAMS), param);
260
261	0	if (sparam == NULL) {
262	0	ERR_raise(ERR_LIB_EVP, EVP_R_DECODE_ERROR);
263	0	goto err;
264	0	}
265
266	0	t = EVP_CIPHER_CTX_get_key_length(ctx);
267	0	if (t < 0) {
268	0	ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_KEY_LENGTH);
269	0	goto err;
270	0	}
271	0	keylen = t;
272
273		/* Now check the parameters of sparam */
274
275	0	if (sparam->keyLength) {
276	0	uint64_t spkeylen;
277	0	if ((ASN1_INTEGER_get_uint64(&spkeylen, sparam->keyLength) == 0)
278	0	\|\| (spkeylen != keylen)) {
279	0	ERR_raise(ERR_LIB_EVP, EVP_R_UNSUPPORTED_KEYLENGTH);
280	0	goto err;
281	0	}
282	0	}
283		/* Check all parameters fit in uint64_t and are acceptable to scrypt */
284	0	if (ASN1_INTEGER_get_uint64(&N, sparam->costParameter) == 0
285	0	\|\| ASN1_INTEGER_get_uint64(&r, sparam->blockSize) == 0
286	0	\|\| ASN1_INTEGER_get_uint64(&p, sparam->parallelizationParameter) == 0
287	0	\|\| EVP_PBE_scrypt_ex(NULL, 0, NULL, 0, N, r, p, 0, NULL, 0,
288	0	libctx, propq)
289	0	== 0) {
290	0	ERR_raise(ERR_LIB_EVP, EVP_R_ILLEGAL_SCRYPT_PARAMETERS);
291	0	goto err;
292	0	}
293
294		/* it seems that its all OK */
295
296	0	salt = sparam->salt->data;
297	0	saltlen = sparam->salt->length;
298	0	if (EVP_PBE_scrypt_ex(pass, passlen, salt, saltlen, N, r, p, 0, key,
299	0	keylen, libctx, propq)
300	0	== 0)
301	0	goto err;
302	0	rv = EVP_CipherInit_ex(ctx, NULL, NULL, key, NULL, en_de);
303	0	err:
304	0	if (keylen)
305	0	OPENSSL_cleanse(key, keylen);
306	0	SCRYPT_PARAMS_free(sparam);
307	0	return rv;
308	0	}
309
310		int PKCS5_v2_scrypt_keyivgen(EVP_CIPHER_CTX ctx, const char pass,
311		int passlen, ASN1_TYPE *param,
312		const EVP_CIPHER c, const EVP_MD md, int en_de)
313	0	{
314	0	return PKCS5_v2_scrypt_keyivgen_ex(ctx, pass, passlen, param, c, md, en_de, NULL, NULL);
315	0	}
316
317		#endif /* OPENSSL_NO_SCRYPT */