Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	lib/libcrypto/asn1/p5_pbev2.c	Lines:	68	92	73.9 %
Date:	2017-11-13	Branches:	27	58	46.6 %


/* $OpenBSD: p5_pbev2.c,v 1.25 2017/01/29 17:49:22 beck Exp $ */
/* Written by Dr Stephen N Henson (steve@openssl.org) 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).
 *
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include <openssl/asn1t.h>
#include <openssl/err.h>
#include <openssl/x509.h>

/* PKCS#5 v2.0 password based encryption structures */

static const ASN1_TEMPLATE PBE2PARAM_seq_tt[] = {
	{
		.offset = offsetof(PBE2PARAM, keyfunc),
		.field_name = "keyfunc",
		.item = &X509_ALGOR_it,
	},
	{
		.offset = offsetof(PBE2PARAM, encryption),
		.field_name = "encryption",
		.item = &X509_ALGOR_it,
	},
};

const ASN1_ITEM PBE2PARAM_it = {
	.itype = ASN1_ITYPE_SEQUENCE,
	.utype = V_ASN1_SEQUENCE,
	.templates = PBE2PARAM_seq_tt,
	.tcount = sizeof(PBE2PARAM_seq_tt) / sizeof(ASN1_TEMPLATE),
	.size = sizeof(PBE2PARAM),
	.sname = "PBE2PARAM",
};


PBE2PARAM *
d2i_PBE2PARAM(PBE2PARAM **a, const unsigned char **in, long len)
{
	return (PBE2PARAM *)ASN1_item_d2i((ASN1_VALUE **)a, in, len,
	    &PBE2PARAM_it);
}

int
i2d_PBE2PARAM(PBE2PARAM *a, unsigned char **out)
{
	return ASN1_item_i2d((ASN1_VALUE *)a, out, &PBE2PARAM_it);
}

PBE2PARAM *
PBE2PARAM_new(void)
{
	return (PBE2PARAM *)ASN1_item_new(&PBE2PARAM_it);
}

void
PBE2PARAM_free(PBE2PARAM *a)
{
	ASN1_item_free((ASN1_VALUE *)a, &PBE2PARAM_it);
}

static const ASN1_TEMPLATE PBKDF2PARAM_seq_tt[] = {
	{
		.offset = offsetof(PBKDF2PARAM, salt),
		.field_name = "salt",
		.item = &ASN1_ANY_it,
	},
	{
		.offset = offsetof(PBKDF2PARAM, iter),
		.field_name = "iter",
		.item = &ASN1_INTEGER_it,
	},
	{
		.flags = ASN1_TFLG_OPTIONAL,
		.offset = offsetof(PBKDF2PARAM, keylength),
		.field_name = "keylength",
		.item = &ASN1_INTEGER_it,
	},
	{
		.flags = ASN1_TFLG_OPTIONAL,
		.offset = offsetof(PBKDF2PARAM, prf),
		.field_name = "prf",
		.item = &X509_ALGOR_it,
	},
};

const ASN1_ITEM PBKDF2PARAM_it = {
	.itype = ASN1_ITYPE_SEQUENCE,
	.utype = V_ASN1_SEQUENCE,
	.templates = PBKDF2PARAM_seq_tt,
	.tcount = sizeof(PBKDF2PARAM_seq_tt) / sizeof(ASN1_TEMPLATE),
	.size = sizeof(PBKDF2PARAM),
	.sname = "PBKDF2PARAM",
};


PBKDF2PARAM *
d2i_PBKDF2PARAM(PBKDF2PARAM **a, const unsigned char **in, long len)
{
	return (PBKDF2PARAM *)ASN1_item_d2i((ASN1_VALUE **)a, in, len,
	    &PBKDF2PARAM_it);
}

int
i2d_PBKDF2PARAM(PBKDF2PARAM *a, unsigned char **out)
{
	return ASN1_item_i2d((ASN1_VALUE *)a, out, &PBKDF2PARAM_it);
}

PBKDF2PARAM *
PBKDF2PARAM_new(void)
{
	return (PBKDF2PARAM *)ASN1_item_new(&PBKDF2PARAM_it);
}

void
PBKDF2PARAM_free(PBKDF2PARAM *a)
{
	ASN1_item_free((ASN1_VALUE *)a, &PBKDF2PARAM_it);
}

/* 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;
	unsigned char iv[EVP_MAX_IV_LENGTH];
	PBE2PARAM *pbe2 = NULL;
	ASN1_OBJECT *obj;

	alg_nid = EVP_CIPHER_type(cipher);
	if (alg_nid == NID_undef) {
		ASN1error(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)) {
		if (aiv)
			memcpy(iv, aiv, EVP_CIPHER_iv_length(cipher));
		else
			arc4random_buf(iv, EVP_CIPHER_iv_length(cipher));
	}

	EVP_CIPHER_CTX_init(&ctx);

	/* 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) {
		ASN1error(ASN1_R_ERROR_SETTING_CIPHER_PARAMS);
		EVP_CIPHER_CTX_cleanup(&ctx);
		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_hmacWithSHA1;
	}
	EVP_CIPHER_CTX_cleanup(&ctx);

	/* 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()))
		goto merr;
	if (!(ret->parameter = ASN1_TYPE_new()))
		goto merr;

	ret->algorithm = OBJ_nid2obj(NID_pbes2);

	/* Encode PBE2PARAM into parameter */

	if (!ASN1_item_pack(pbe2, &PBE2PARAM_it,
		&ret->parameter->value.sequence)) goto merr;
	ret->parameter->type = V_ASN1_SEQUENCE;

	PBE2PARAM_free(pbe2);
	pbe2 = NULL;

	return ret;

merr:
	ASN1error(ERR_R_MALLOC_FAILURE);

err:
	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)
{
	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 *keyfunc = NULL;
	PBKDF2PARAM *kdf = NULL;
	ASN1_OCTET_STRING *osalt = NULL;

	if (!(kdf = PBKDF2PARAM_new()))
		goto merr;
	if (!(osalt = ASN1_OCTET_STRING_new()))
		goto merr;

	kdf->salt->value.octet_string = osalt;
	kdf->salt->type = V_ASN1_OCTET_STRING;

	if (!saltlen)
		saltlen = PKCS5_SALT_LEN;
	if (!(osalt->data = malloc (saltlen)))
		goto merr;

	osalt->length = saltlen;

	if (salt)
		memcpy (osalt->data, salt, saltlen);
	else
		arc4random_buf(osalt->data, saltlen);

	if (iter <= 0)
		iter = PKCS5_DEFAULT_ITER;

	if (!ASN1_INTEGER_set(kdf->iter, iter))
		goto merr;

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

	if (keylen > 0) {
		if (!(kdf->keylength = ASN1_INTEGER_new()))
			goto merr;
		if (!ASN1_INTEGER_set(kdf->keylength, keylen))
			goto merr;
	}

	/* 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)
			goto merr;
		X509_ALGOR_set0(kdf->prf, OBJ_nid2obj(prf_nid),
		V_ASN1_NULL, NULL);
	}

	/* Finally setup the keyfunc structure */

	keyfunc = X509_ALGOR_new();
	if (!keyfunc)
		goto merr;

	keyfunc->algorithm = OBJ_nid2obj(NID_id_pbkdf2);

	/* Encode PBKDF2PARAM into parameter of pbe2 */

	if (!(keyfunc->parameter = ASN1_TYPE_new()))
		goto merr;

	if (!ASN1_item_pack(kdf, &PBKDF2PARAM_it,
		&keyfunc->parameter->value.sequence))
		goto merr;
	keyfunc->parameter->type = V_ASN1_SEQUENCE;

	PBKDF2PARAM_free(kdf);
	return keyfunc;

merr:
	ASN1error(ERR_R_MALLOC_FAILURE);
	PBKDF2PARAM_free(kdf);
	X509_ALGOR_free(keyfunc);
	return NULL;
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: p5_pbev2.c,v 1.25 2017/01/29 17:49:22 beck Exp $ */
2			/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
3			* project 1999-2004.
4			*/
5			/* ====================================================================
6			* Copyright (c) 1999 The OpenSSL Project. All rights reserved.
7			*
8			* Redistribution and use in source and binary forms, with or without
9			* modification, are permitted provided that the following conditions
10			* are met:
11			*
12			* 1. Redistributions of source code must retain the above copyright
13			* notice, this list of conditions and the following disclaimer.
14			*
15			* 2. Redistributions in binary form must reproduce the above copyright
16			* notice, this list of conditions and the following disclaimer in
17			* the documentation and/or other materials provided with the
18			* distribution.
19			*
20			* 3. All advertising materials mentioning features or use of this
21			* software must display the following acknowledgment:
22			* "This product includes software developed by the OpenSSL Project
23			* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
24			*
25			* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26			* endorse or promote products derived from this software without
27			* prior written permission. For written permission, please contact
28			* licensing@OpenSSL.org.
29			*
30			* 5. Products derived from this software may not be called "OpenSSL"
31			* nor may "OpenSSL" appear in their names without prior written
32			* permission of the OpenSSL Project.
33			*
34			* 6. Redistributions of any form whatsoever must retain the following
35			* acknowledgment:
36			* "This product includes software developed by the OpenSSL Project
37			* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
38			*
39			* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40			* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41			* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42			* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43			* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44			* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45			* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46			* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47			* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48			* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49			* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50			* OF THE POSSIBILITY OF SUCH DAMAGE.
51			* ====================================================================
52			*
53			* This product includes cryptographic software written by Eric Young
54			* (eay@cryptsoft.com). This product includes software written by Tim
55			* Hudson (tjh@cryptsoft.com).
56			*
57			*/
58
59			#include <stdio.h>
60			#include <stdlib.h>
61			#include <string.h>
62
63			#include <openssl/asn1t.h>
64			#include <openssl/err.h>
65			#include <openssl/x509.h>
66
67			/* PKCS#5 v2.0 password based encryption structures */
68
69			static const ASN1_TEMPLATE PBE2PARAM_seq_tt[] = {
70			{
71			.offset = offsetof(PBE2PARAM, keyfunc),
72			.field_name = "keyfunc",
73			.item = &X509_ALGOR_it,
74			},
75			{
76			.offset = offsetof(PBE2PARAM, encryption),
77			.field_name = "encryption",
78			.item = &X509_ALGOR_it,
79			},
80			};
81
82			const ASN1_ITEM PBE2PARAM_it = {
83			.itype = ASN1_ITYPE_SEQUENCE,
84			.utype = V_ASN1_SEQUENCE,
85			.templates = PBE2PARAM_seq_tt,
86			.tcount = sizeof(PBE2PARAM_seq_tt) / sizeof(ASN1_TEMPLATE),
87			.size = sizeof(PBE2PARAM),
88			.sname = "PBE2PARAM",
89			};
90
91
92			PBE2PARAM *
93			d2i_PBE2PARAM(PBE2PARAM a, const unsigned char in, long len)
94			{
95		92	return (PBE2PARAM )ASN1_item_d2i((ASN1_VALUE *)a, in, len,
96			&PBE2PARAM_it);
97			}
98
99			int
100			i2d_PBE2PARAM(PBE2PARAM a, unsigned char *out)
101			{
102			return ASN1_item_i2d((ASN1_VALUE *)a, out, &PBE2PARAM_it);
103			}
104
105			PBE2PARAM *
106			PBE2PARAM_new(void)
107			{
108		32	return (PBE2PARAM *)ASN1_item_new(&PBE2PARAM_it);
109			}
110
111			void
112			PBE2PARAM_free(PBE2PARAM *a)
113			{
114		124	ASN1_item_free((ASN1_VALUE *)a, &PBE2PARAM_it);
115		62	}
116
117			static const ASN1_TEMPLATE PBKDF2PARAM_seq_tt[] = {
118			{
119			.offset = offsetof(PBKDF2PARAM, salt),
120			.field_name = "salt",
121			.item = &ASN1_ANY_it,
122			},
123			{
124			.offset = offsetof(PBKDF2PARAM, iter),
125			.field_name = "iter",
126			.item = &ASN1_INTEGER_it,
127			},
128			{
129			.flags = ASN1_TFLG_OPTIONAL,
130			.offset = offsetof(PBKDF2PARAM, keylength),
131			.field_name = "keylength",
132			.item = &ASN1_INTEGER_it,
133			},
134			{
135			.flags = ASN1_TFLG_OPTIONAL,
136			.offset = offsetof(PBKDF2PARAM, prf),
137			.field_name = "prf",
138			.item = &X509_ALGOR_it,
139			},
140			};
141
142			const ASN1_ITEM PBKDF2PARAM_it = {
143			.itype = ASN1_ITYPE_SEQUENCE,
144			.utype = V_ASN1_SEQUENCE,
145			.templates = PBKDF2PARAM_seq_tt,
146			.tcount = sizeof(PBKDF2PARAM_seq_tt) / sizeof(ASN1_TEMPLATE),
147			.size = sizeof(PBKDF2PARAM),
148			.sname = "PBKDF2PARAM",
149			};
150
151
152			PBKDF2PARAM *
153			d2i_PBKDF2PARAM(PBKDF2PARAM a, const unsigned char in, long len)
154			{
155		92	return (PBKDF2PARAM )ASN1_item_d2i((ASN1_VALUE *)a, in, len,
156			&PBKDF2PARAM_it);
157			}
158
159			int
160			i2d_PBKDF2PARAM(PBKDF2PARAM a, unsigned char *out)
161			{
162			return ASN1_item_i2d((ASN1_VALUE *)a, out, &PBKDF2PARAM_it);
163			}
164
165			PBKDF2PARAM *
166			PBKDF2PARAM_new(void)
167			{
168		32	return (PBKDF2PARAM *)ASN1_item_new(&PBKDF2PARAM_it);
169			}
170
171			void
172			PBKDF2PARAM_free(PBKDF2PARAM *a)
173			{
174		124	ASN1_item_free((ASN1_VALUE *)a, &PBKDF2PARAM_it);
175		62	}
176
177			/* Return an algorithm identifier for a PKCS#5 v2.0 PBE algorithm:
178			* yes I know this is horrible!
179			*
180			* Extended version to allow application supplied PRF NID and IV.
181			*/
182
183			X509_ALGOR *
184			PKCS5_pbe2_set_iv(const EVP_CIPHER cipher, int iter, unsigned char salt,
185			int saltlen, unsigned char *aiv, int prf_nid)
186			{
187			X509_ALGOR scheme = NULL, kalg = NULL, *ret = NULL;
188			int alg_nid, keylen;
189		16	EVP_CIPHER_CTX ctx;
190		16	unsigned char iv[EVP_MAX_IV_LENGTH];
191			PBE2PARAM *pbe2 = NULL;
192			ASN1_OBJECT *obj;
193
194		16	alg_nid = EVP_CIPHER_type(cipher);
195	✗✓	16	if (alg_nid == NID_undef) {
196			ASN1error(ASN1_R_CIPHER_HAS_NO_OBJECT_IDENTIFIER);
197			goto err;
198			}
199		16	obj = OBJ_nid2obj(alg_nid);
200
201	✓✗	16	if (!(pbe2 = PBE2PARAM_new()))
202			goto merr;
203
204			/* Setup the AlgorithmIdentifier for the encryption scheme */
205		16	scheme = pbe2->encryption;
206
207		16	scheme->algorithm = obj;
208	✓✗	16	if (!(scheme->parameter = ASN1_TYPE_new()))
209			goto merr;
210
211			/* Create random IV */
212	✓✗	16	if (EVP_CIPHER_iv_length(cipher)) {
213	✗✓	16	if (aiv)
214			memcpy(iv, aiv, EVP_CIPHER_iv_length(cipher));
215			else
216		16	arc4random_buf(iv, EVP_CIPHER_iv_length(cipher));
217			}
218
219		16	EVP_CIPHER_CTX_init(&ctx);
220
221			/* Dummy cipherinit to just setup the IV, and PRF */
222	✓✗	16	if (!EVP_CipherInit_ex(&ctx, cipher, NULL, NULL, iv, 0))
223			goto err;
224	✗✓	16	if (EVP_CIPHER_param_to_asn1(&ctx, scheme->parameter) < 0) {
225			ASN1error(ASN1_R_ERROR_SETTING_CIPHER_PARAMS);
226			EVP_CIPHER_CTX_cleanup(&ctx);
227			goto err;
228			}
229			/* If prf NID unspecified see if cipher has a preference.
230			* An error is OK here: just means use default PRF.
231			*/
232	✓✗✓✗	32	if ((prf_nid == -1) &&
233		16	EVP_CIPHER_CTX_ctrl(&ctx, EVP_CTRL_PBE_PRF_NID, 0, &prf_nid) <= 0) {
234		16	ERR_clear_error();
235		16	prf_nid = NID_hmacWithSHA1;
236		16	}
237		16	EVP_CIPHER_CTX_cleanup(&ctx);
238
239			/* If its RC2 then we'd better setup the key length */
240
241	✗✓	16	if (alg_nid == NID_rc2_cbc)
242			keylen = EVP_CIPHER_key_length(cipher);
243			else
244			keylen = -1;
245
246			/* Setup keyfunc */
247
248		16	X509_ALGOR_free(pbe2->keyfunc);
249
250		16	pbe2->keyfunc = PKCS5_pbkdf2_set(iter, salt, saltlen, prf_nid, keylen);
251
252	✓✗	16	if (!pbe2->keyfunc)
253			goto merr;
254
255			/* Now set up top level AlgorithmIdentifier */
256
257	✓✗	16	if (!(ret = X509_ALGOR_new()))
258			goto merr;
259	✓✗	16	if (!(ret->parameter = ASN1_TYPE_new()))
260			goto merr;
261
262		16	ret->algorithm = OBJ_nid2obj(NID_pbes2);
263
264			/* Encode PBE2PARAM into parameter */
265
266	✓✗	32	if (!ASN1_item_pack(pbe2, &PBE2PARAM_it,
267		16	&ret->parameter->value.sequence)) goto merr;
268		16	ret->parameter->type = V_ASN1_SEQUENCE;
269
270		16	PBE2PARAM_free(pbe2);
271			pbe2 = NULL;
272
273		16	return ret;
274
275			merr:
276			ASN1error(ERR_R_MALLOC_FAILURE);
277
278			err:
279			PBE2PARAM_free(pbe2);
280			/* Note 'scheme' is freed as part of pbe2 */
281			X509_ALGOR_free(kalg);
282			X509_ALGOR_free(ret);
283
284			return NULL;
285		16	}
286
287			X509_ALGOR *
288			PKCS5_pbe2_set(const EVP_CIPHER cipher, int iter, unsigned char salt,
289			int saltlen)
290			{
291		32	return PKCS5_pbe2_set_iv(cipher, iter, salt, saltlen, NULL, -1);
292			}
293
294			X509_ALGOR *
295			PKCS5_pbkdf2_set(int iter, unsigned char *salt, int saltlen, int prf_nid,
296			int keylen)
297			{
298			X509_ALGOR *keyfunc = NULL;
299			PBKDF2PARAM *kdf = NULL;
300			ASN1_OCTET_STRING *osalt = NULL;
301
302	✓✗	32	if (!(kdf = PBKDF2PARAM_new()))
303			goto merr;
304	✓✗	16	if (!(osalt = ASN1_OCTET_STRING_new()))
305			goto merr;
306
307		16	kdf->salt->value.octet_string = osalt;
308		16	kdf->salt->type = V_ASN1_OCTET_STRING;
309
310	✓✗	16	if (!saltlen)
311		16	saltlen = PKCS5_SALT_LEN;
312	✓✗	16	if (!(osalt->data = malloc (saltlen)))
313			goto merr;
314
315		16	osalt->length = saltlen;
316
317	✗✓	16	if (salt)
318			memcpy (osalt->data, salt, saltlen);
319			else
320		16	arc4random_buf(osalt->data, saltlen);
321
322	✓✓	16	if (iter <= 0)
323		12	iter = PKCS5_DEFAULT_ITER;
324
325	✓✗	16	if (!ASN1_INTEGER_set(kdf->iter, iter))
326			goto merr;
327
328			/* If have a key len set it up */
329
330	✗✓	16	if (keylen > 0) {
331			if (!(kdf->keylength = ASN1_INTEGER_new()))
332			goto merr;
333			if (!ASN1_INTEGER_set(kdf->keylength, keylen))
334			goto merr;
335			}
336
337			/* prf can stay NULL if we are using hmacWithSHA1 */
338	✗✓	16	if (prf_nid > 0 && prf_nid != NID_hmacWithSHA1) {
339			kdf->prf = X509_ALGOR_new();
340			if (!kdf->prf)
341			goto merr;
342			X509_ALGOR_set0(kdf->prf, OBJ_nid2obj(prf_nid),
343			V_ASN1_NULL, NULL);
344			}
345
346			/* Finally setup the keyfunc structure */
347
348		16	keyfunc = X509_ALGOR_new();
349	✓✗	16	if (!keyfunc)
350			goto merr;
351
352		16	keyfunc->algorithm = OBJ_nid2obj(NID_id_pbkdf2);
353
354			/* Encode PBKDF2PARAM into parameter of pbe2 */
355
356	✓✗	16	if (!(keyfunc->parameter = ASN1_TYPE_new()))
357			goto merr;
358
359	✓✗	32	if (!ASN1_item_pack(kdf, &PBKDF2PARAM_it,
360		16	&keyfunc->parameter->value.sequence))
361			goto merr;
362		16	keyfunc->parameter->type = V_ASN1_SEQUENCE;
363
364		16	PBKDF2PARAM_free(kdf);
365		16	return keyfunc;
366
367			merr:
368			ASN1error(ERR_R_MALLOC_FAILURE);
369			PBKDF2PARAM_free(kdf);
370			X509_ALGOR_free(keyfunc);
371			return NULL;
372		16	}