/src/openssl35/providers/common/provider_util.c

Source
/*
 * Copyright 2019-2025 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
 */

/* We need to use some engine deprecated APIs */
#define OPENSSL_SUPPRESS_DEPRECATED

#include <openssl/evp.h>
#include <openssl/core_names.h>
#include <openssl/err.h>
#include <openssl/proverr.h>
#ifndef FIPS_MODULE
#include <openssl/engine.h>
#include "crypto/evp.h"
#endif
#include "prov/providercommon.h"
#include "prov/provider_util.h"

void ossl_prov_cipher_reset(PROV_CIPHER *pc)
{
    EVP_CIPHER_free(pc->alloc_cipher);
    pc->alloc_cipher = NULL;
    pc->cipher = NULL;
#if !defined(FIPS_MODULE) && !defined(OPENSSL_NO_ENGINE)
    ENGINE_finish(pc->engine);
#endif
    pc->engine = NULL;
}

int ossl_prov_cipher_copy(PROV_CIPHER *dst, const PROV_CIPHER *src)
{
    if (src->alloc_cipher != NULL && !EVP_CIPHER_up_ref(src->alloc_cipher))
        return 0;
#if !defined(FIPS_MODULE) && !defined(OPENSSL_NO_ENGINE)
    if (src->engine != NULL && !ENGINE_init(src->engine)) {
        EVP_CIPHER_free(src->alloc_cipher);
        return 0;
    }
#endif
    dst->engine = src->engine;
    dst->cipher = src->cipher;
    dst->alloc_cipher = src->alloc_cipher;
    return 1;
}

static int load_common(const OSSL_PARAM params[], const char **propquery,
    ENGINE **engine)
{
    const OSSL_PARAM *p;

    *propquery = NULL;
    p = OSSL_PARAM_locate_const(params, OSSL_ALG_PARAM_PROPERTIES);
    if (p != NULL) {
        if (p->data_type != OSSL_PARAM_UTF8_STRING)
            return 0;
        *propquery = p->data;
    }

#if !defined(FIPS_MODULE) && !defined(OPENSSL_NO_ENGINE)
    ENGINE_finish(*engine);
#endif
    *engine = NULL;
    /* Inside the FIPS module, we don't support legacy ciphers */
#if !defined(FIPS_MODULE) && !defined(OPENSSL_NO_ENGINE)
    p = OSSL_PARAM_locate_const(params, OSSL_ALG_PARAM_ENGINE);
    if (p != NULL) {
        if (p->data_type != OSSL_PARAM_UTF8_STRING)
            return 0;
        /* Get a structural reference */
        *engine = ENGINE_by_id(p->data);
        if (*engine == NULL)
            return 0;
        /* Get a functional reference */
        if (!ENGINE_init(*engine)) {
            ENGINE_free(*engine);
            *engine = NULL;
            return 0;
        }
        /* Free the structural reference */
        ENGINE_free(*engine);
    }
#endif
    return 1;
}

int ossl_prov_cipher_load_from_params(PROV_CIPHER *pc,
    const OSSL_PARAM params[],
    OSSL_LIB_CTX *ctx)
{
    const OSSL_PARAM *p;
    const char *propquery;

    if (ossl_param_is_empty(params))
        return 1;

    if (!load_common(params, &propquery, &pc->engine))
        return 0;

    p = OSSL_PARAM_locate_const(params, OSSL_ALG_PARAM_CIPHER);
    if (p == NULL)
        return 1;
    if (p->data_type != OSSL_PARAM_UTF8_STRING)
        return 0;

    EVP_CIPHER_free(pc->alloc_cipher);
    ERR_set_mark();
    pc->cipher = pc->alloc_cipher = EVP_CIPHER_fetch(ctx, p->data, propquery);
#ifndef FIPS_MODULE /* Inside the FIPS module, we don't support legacy ciphers */
    if (pc->cipher == NULL) {
        const EVP_CIPHER *cipher;

        cipher = EVP_get_cipherbyname(p->data);
        /* Do not use global EVP_CIPHERs */
        if (cipher != NULL && cipher->origin != EVP_ORIG_GLOBAL)
            pc->cipher = cipher;
    }
#endif
    if (pc->cipher != NULL)
        ERR_pop_to_mark();
    else
        ERR_clear_last_mark();
    return pc->cipher != NULL;
}

const EVP_CIPHER *ossl_prov_cipher_cipher(const PROV_CIPHER *pc)
{
    return pc->cipher;
}

ENGINE *ossl_prov_cipher_engine(const PROV_CIPHER *pc)
{
    return pc->engine;
}

void ossl_prov_digest_reset(PROV_DIGEST *pd)
{
    EVP_MD_free(pd->alloc_md);
    pd->alloc_md = NULL;
    pd->md = NULL;
#if !defined(FIPS_MODULE) && !defined(OPENSSL_NO_ENGINE)
    ENGINE_finish(pd->engine);
#endif
    pd->engine = NULL;
}

int ossl_prov_digest_copy(PROV_DIGEST *dst, const PROV_DIGEST *src)
{
    if (src->alloc_md != NULL && !EVP_MD_up_ref(src->alloc_md))
        return 0;
#if !defined(FIPS_MODULE) && !defined(OPENSSL_NO_ENGINE)
    if (src->engine != NULL && !ENGINE_init(src->engine)) {
        EVP_MD_free(src->alloc_md);
        return 0;
    }
#endif
    dst->engine = src->engine;
    dst->md = src->md;
    dst->alloc_md = src->alloc_md;
    return 1;
}

const EVP_MD *ossl_prov_digest_fetch(PROV_DIGEST *pd, OSSL_LIB_CTX *libctx,
    const char *mdname, const char *propquery)
{
    EVP_MD_free(pd->alloc_md);
    pd->md = pd->alloc_md = EVP_MD_fetch(libctx, mdname, propquery);

    return pd->md;
}

int ossl_prov_digest_load_from_params(PROV_DIGEST *pd,
    const OSSL_PARAM params[],
    OSSL_LIB_CTX *ctx)
{
    const OSSL_PARAM *p;
    const char *propquery;

    if (ossl_param_is_empty(params))
        return 1;

    if (!load_common(params, &propquery, &pd->engine))
        return 0;

    p = OSSL_PARAM_locate_const(params, OSSL_ALG_PARAM_DIGEST);
    if (p == NULL)
        return 1;
    if (p->data_type != OSSL_PARAM_UTF8_STRING)
        return 0;

    ERR_set_mark();
    ossl_prov_digest_fetch(pd, ctx, p->data, propquery);
#ifndef FIPS_MODULE /* Inside the FIPS module, we don't support legacy digests */
    if (pd->md == NULL) {
        const EVP_MD *md;

        md = EVP_get_digestbyname(p->data);
        /* Do not use global EVP_MDs */
        if (md != NULL && md->origin != EVP_ORIG_GLOBAL)
            pd->md = md;
    }
#endif
    if (pd->md != NULL)
        ERR_pop_to_mark();
    else
        ERR_clear_last_mark();
    return pd->md != NULL;
}

void ossl_prov_digest_set_md(PROV_DIGEST *pd, EVP_MD *md)
{
    ossl_prov_digest_reset(pd);
    pd->md = pd->alloc_md = md;
}

const EVP_MD *ossl_prov_digest_md(const PROV_DIGEST *pd)
{
    return pd->md;
}

ENGINE *ossl_prov_digest_engine(const PROV_DIGEST *pd)
{
    return pd->engine;
}

int ossl_prov_set_macctx(EVP_MAC_CTX *macctx,
    const OSSL_PARAM params[],
    const char *ciphername,
    const char *mdname,
    const char *engine,
    const char *properties,
    const unsigned char *key,
    size_t keylen)
{
    const OSSL_PARAM *p;
    OSSL_PARAM mac_params[6], *mp = mac_params;

    if (params != NULL) {
        if (mdname == NULL) {
            if ((p = OSSL_PARAM_locate_const(params,
                     OSSL_ALG_PARAM_DIGEST))
                != NULL) {
                if (p->data_type != OSSL_PARAM_UTF8_STRING)
                    return 0;
                mdname = p->data;
            }
        }
        if (ciphername == NULL) {
            if ((p = OSSL_PARAM_locate_const(params,
                     OSSL_ALG_PARAM_CIPHER))
                != NULL) {
                if (p->data_type != OSSL_PARAM_UTF8_STRING)
                    return 0;
                ciphername = p->data;
            }
        }
        if (engine == NULL) {
            if ((p = OSSL_PARAM_locate_const(params, OSSL_ALG_PARAM_ENGINE))
                != NULL) {
                if (p->data_type != OSSL_PARAM_UTF8_STRING)
                    return 0;
                engine = p->data;
            }
        }
    }

    if (mdname != NULL)
        *mp++ = OSSL_PARAM_construct_utf8_string(OSSL_MAC_PARAM_DIGEST,
            (char *)mdname, 0);
    if (ciphername != NULL)
        *mp++ = OSSL_PARAM_construct_utf8_string(OSSL_MAC_PARAM_CIPHER,
            (char *)ciphername, 0);
    if (properties != NULL)
        *mp++ = OSSL_PARAM_construct_utf8_string(OSSL_MAC_PARAM_PROPERTIES,
            (char *)properties, 0);

#if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
    if (engine != NULL)
        *mp++ = OSSL_PARAM_construct_utf8_string(OSSL_ALG_PARAM_ENGINE,
            (char *)engine, 0);
#endif

    if (key != NULL)
        *mp++ = OSSL_PARAM_construct_octet_string(OSSL_MAC_PARAM_KEY,
            (unsigned char *)key,
            keylen);

    *mp = OSSL_PARAM_construct_end();

    return EVP_MAC_CTX_set_params(macctx, mac_params);
}

int ossl_prov_macctx_load_from_params(EVP_MAC_CTX **macctx,
    const OSSL_PARAM params[],
    const char *macname,
    const char *ciphername,
    const char *mdname,
    OSSL_LIB_CTX *libctx)
{
    const OSSL_PARAM *p;
    const char *properties = NULL;

    if (macname == NULL
        && (p = OSSL_PARAM_locate_const(params, OSSL_ALG_PARAM_MAC)) != NULL) {
        if (p->data_type != OSSL_PARAM_UTF8_STRING)
            return 0;
        macname = p->data;
    }
    if ((p = OSSL_PARAM_locate_const(params,
             OSSL_ALG_PARAM_PROPERTIES))
        != NULL) {
        if (p->data_type != OSSL_PARAM_UTF8_STRING)
            return 0;
        properties = p->data;
    }

    /* If we got a new mac name, we make a new EVP_MAC_CTX */
    if (macname != NULL) {
        EVP_MAC *mac = EVP_MAC_fetch(libctx, macname, properties);

        EVP_MAC_CTX_free(*macctx);
        *macctx = mac == NULL ? NULL : EVP_MAC_CTX_new(mac);
        /* The context holds on to the MAC */
        EVP_MAC_free(mac);
        if (*macctx == NULL)
            return 0;
    }

    /*
     * If there is no MAC yet (and therefore, no MAC context), we ignore
     * all other parameters.
     */
    if (*macctx == NULL)
        return 1;

    if (ossl_prov_set_macctx(*macctx, params, ciphername, mdname, NULL,
            properties, NULL, 0))
        return 1;

    EVP_MAC_CTX_free(*macctx);
    *macctx = NULL;
    return 0;
}

void ossl_prov_cache_exported_algorithms(const OSSL_ALGORITHM_CAPABLE *in,
    OSSL_ALGORITHM *out)
{
    int i, j;

    if (out[0].algorithm_names == NULL) {
        for (i = j = 0; in[i].alg.algorithm_names != NULL; ++i) {
            if (in[i].capable == NULL || in[i].capable())
                out[j++] = in[i].alg;
        }
        out[j++] = in[i].alg;
    }
}

/* Duplicate a lump of memory safely */
int ossl_prov_memdup(const void *src, size_t src_len,
    unsigned char **dest, size_t *dest_len)
{
    if (src != NULL) {
        if ((*dest = OPENSSL_memdup(src, src_len)) == NULL)
            return 0;
        *dest_len = src_len;
    } else {
        *dest = NULL;
        *dest_len = 0;
    }
    return 1;
}

Coverage Report

Created: 2025-12-31 06:58

Line	Count	Source
1		/*
2		* Copyright 2019-2025 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		/* We need to use some engine deprecated APIs */
11		#define OPENSSL_SUPPRESS_DEPRECATED
12
13		#include <openssl/evp.h>
14		#include <openssl/core_names.h>
15		#include <openssl/err.h>
16		#include <openssl/proverr.h>
17		#ifndef FIPS_MODULE
18		#include <openssl/engine.h>
19		#include "crypto/evp.h"
20		#endif
21		#include "prov/providercommon.h"
22		#include "prov/provider_util.h"
23
24		void ossl_prov_cipher_reset(PROV_CIPHER *pc)
25	20.3k	{
26	20.3k	EVP_CIPHER_free(pc->alloc_cipher);
27	20.3k	pc->alloc_cipher = NULL;
28	20.3k	pc->cipher = NULL;
29	20.3k	#if !defined(FIPS_MODULE) && !defined(OPENSSL_NO_ENGINE)
30	20.3k	ENGINE_finish(pc->engine);
31	20.3k	#endif
32	20.3k	pc->engine = NULL;
33	20.3k	}
34
35		int ossl_prov_cipher_copy(PROV_CIPHER dst, const PROV_CIPHER src)
36	66	{
37	66	if (src->alloc_cipher != NULL && !EVP_CIPHER_up_ref(src->alloc_cipher))
38	0	return 0;
39	66	#if !defined(FIPS_MODULE) && !defined(OPENSSL_NO_ENGINE)
40	66	if (src->engine != NULL && !ENGINE_init(src->engine)) {
41	0	EVP_CIPHER_free(src->alloc_cipher);
42	0	return 0;
43	0	}
44	66	#endif
45	66	dst->engine = src->engine;
46	66	dst->cipher = src->cipher;
47	66	dst->alloc_cipher = src->alloc_cipher;
48	66	return 1;
49	66	}
50
51		static int load_common(const OSSL_PARAM params[], const char **propquery,
52		ENGINE **engine)
53	1.11M	{
54	1.11M	const OSSL_PARAM *p;
55
56	1.11M	*propquery = NULL;
57	1.11M	p = OSSL_PARAM_locate_const(params, OSSL_ALG_PARAM_PROPERTIES);
58	1.11M	if (p != NULL) {
59	4.81k	if (p->data_type != OSSL_PARAM_UTF8_STRING)
60	0	return 0;
61	4.81k	*propquery = p->data;
62	4.81k	}
63
64	1.11M	#if !defined(FIPS_MODULE) && !defined(OPENSSL_NO_ENGINE)
65	1.11M	ENGINE_finish(*engine);
66	1.11M	#endif
67	1.11M	*engine = NULL;
68		/* Inside the FIPS module, we don't support legacy ciphers */
69	1.11M	#if !defined(FIPS_MODULE) && !defined(OPENSSL_NO_ENGINE)
70	1.11M	p = OSSL_PARAM_locate_const(params, OSSL_ALG_PARAM_ENGINE);
71	1.11M	if (p != NULL) {
72	0	if (p->data_type != OSSL_PARAM_UTF8_STRING)
73	0	return 0;
74		/* Get a structural reference */
75	0	*engine = ENGINE_by_id(p->data);
76	0	if (*engine == NULL)
77	0	return 0;
78		/* Get a functional reference */
79	0	if (!ENGINE_init(*engine)) {
80	0	ENGINE_free(*engine);
81	0	*engine = NULL;
82	0	return 0;
83	0	}
84		/* Free the structural reference */
85	0	ENGINE_free(*engine);
86	0	}
87	1.11M	#endif
88	1.11M	return 1;
89	1.11M	}
90
91		int ossl_prov_cipher_load_from_params(PROV_CIPHER *pc,
92		const OSSL_PARAM params[],
93		OSSL_LIB_CTX *ctx)
94	118	{
95	118	const OSSL_PARAM *p;
96	118	const char *propquery;
97
98	118	if (ossl_param_is_empty(params))
99	0	return 1;
100
101	118	if (!load_common(params, &propquery, &pc->engine))
102	0	return 0;
103
104	118	p = OSSL_PARAM_locate_const(params, OSSL_ALG_PARAM_CIPHER);
105	118	if (p == NULL)
106	0	return 1;
107	118	if (p->data_type != OSSL_PARAM_UTF8_STRING)
108	0	return 0;
109
110	118	EVP_CIPHER_free(pc->alloc_cipher);
111	118	ERR_set_mark();
112	118	pc->cipher = pc->alloc_cipher = EVP_CIPHER_fetch(ctx, p->data, propquery);
113	118	#ifndef FIPS_MODULE /* Inside the FIPS module, we don't support legacy ciphers */
114	118	if (pc->cipher == NULL) {
115	43	const EVP_CIPHER *cipher;
116
117	43	cipher = EVP_get_cipherbyname(p->data);
118		/* Do not use global EVP_CIPHERs */
119	43	if (cipher != NULL && cipher->origin != EVP_ORIG_GLOBAL)
120	0	pc->cipher = cipher;
121	43	}
122	118	#endif
123	118	if (pc->cipher != NULL)
124	75	ERR_pop_to_mark();
125	43	else
126	43	ERR_clear_last_mark();
127	118	return pc->cipher != NULL;
128	118	}
129
130		const EVP_CIPHER ossl_prov_cipher_cipher(const PROV_CIPHER pc)
131	994	{
132	994	return pc->cipher;
133	994	}
134
135		ENGINE ossl_prov_cipher_engine(const PROV_CIPHER pc)
136	389	{
137	389	return pc->engine;
138	389	}
139
140		void ossl_prov_digest_reset(PROV_DIGEST *pd)
141	3.07M	{
142	3.07M	EVP_MD_free(pd->alloc_md);
143	3.07M	pd->alloc_md = NULL;
144	3.07M	pd->md = NULL;
145	3.07M	#if !defined(FIPS_MODULE) && !defined(OPENSSL_NO_ENGINE)
146	3.07M	ENGINE_finish(pd->engine);
147	3.07M	#endif
148	3.07M	pd->engine = NULL;
149	3.07M	}
150
151		int ossl_prov_digest_copy(PROV_DIGEST dst, const PROV_DIGEST src)
152	1.12M	{
153	1.12M	if (src->alloc_md != NULL && !EVP_MD_up_ref(src->alloc_md))
154	0	return 0;
155	1.12M	#if !defined(FIPS_MODULE) && !defined(OPENSSL_NO_ENGINE)
156	1.12M	if (src->engine != NULL && !ENGINE_init(src->engine)) {
157	0	EVP_MD_free(src->alloc_md);
158	0	return 0;
159	0	}
160	1.12M	#endif
161	1.12M	dst->engine = src->engine;
162	1.12M	dst->md = src->md;
163	1.12M	dst->alloc_md = src->alloc_md;
164	1.12M	return 1;
165	1.12M	}
166
167		const EVP_MD ossl_prov_digest_fetch(PROV_DIGEST pd, OSSL_LIB_CTX *libctx,
168		const char mdname, const char propquery)
169	1.65M	{
170	1.65M	EVP_MD_free(pd->alloc_md);
171	1.65M	pd->md = pd->alloc_md = EVP_MD_fetch(libctx, mdname, propquery);
172
173	1.65M	return pd->md;
174	1.65M	}
175
176		int ossl_prov_digest_load_from_params(PROV_DIGEST *pd,
177		const OSSL_PARAM params[],
178		OSSL_LIB_CTX *ctx)
179	352k	{
180	352k	const OSSL_PARAM *p;
181	352k	const char *propquery;
182
183	352k	if (ossl_param_is_empty(params))
184	0	return 1;
185
186	352k	if (!load_common(params, &propquery, &pd->engine))
187	0	return 0;
188
189	352k	p = OSSL_PARAM_locate_const(params, OSSL_ALG_PARAM_DIGEST);
190	352k	if (p == NULL)
191	47.2k	return 1;
192	305k	if (p->data_type != OSSL_PARAM_UTF8_STRING)
193	0	return 0;
194
195	305k	ERR_set_mark();
196	305k	ossl_prov_digest_fetch(pd, ctx, p->data, propquery);
197	305k	#ifndef FIPS_MODULE /* Inside the FIPS module, we don't support legacy digests */
198	305k	if (pd->md == NULL) {
199	493	const EVP_MD *md;
200
201	493	md = EVP_get_digestbyname(p->data);
202		/* Do not use global EVP_MDs */
203	493	if (md != NULL && md->origin != EVP_ORIG_GLOBAL)
204	0	pd->md = md;
205	493	}
206	305k	#endif
207	305k	if (pd->md != NULL)
208	304k	ERR_pop_to_mark();
209	493	else
210	493	ERR_clear_last_mark();
211	305k	return pd->md != NULL;
212	305k	}
213
214		void ossl_prov_digest_set_md(PROV_DIGEST pd, EVP_MD md)
215	6	{
216	6	ossl_prov_digest_reset(pd);
217	6	pd->md = pd->alloc_md = md;
218	6	}
219
220		const EVP_MD ossl_prov_digest_md(const PROV_DIGEST pd)
221	2.96M	{
222	2.96M	return pd->md;
223	2.96M	}
224
225		ENGINE ossl_prov_digest_engine(const PROV_DIGEST pd)
226	227k	{
227	227k	return pd->engine;
228	227k	}
229
230		int ossl_prov_set_macctx(EVP_MAC_CTX *macctx,
231		const OSSL_PARAM params[],
232		const char *ciphername,
233		const char *mdname,
234		const char *engine,
235		const char *properties,
236		const unsigned char *key,
237		size_t keylen)
238	75.4k	{
239	75.4k	const OSSL_PARAM *p;
240	75.4k	OSSL_PARAM mac_params[6], *mp = mac_params;
241
242	75.4k	if (params != NULL) {
243	62.8k	if (mdname == NULL) {
244	34.0k	if ((p = OSSL_PARAM_locate_const(params,
245	34.0k	OSSL_ALG_PARAM_DIGEST))
246	34.0k	!= NULL) {
247	34.0k	if (p->data_type != OSSL_PARAM_UTF8_STRING)
248	0	return 0;
249	34.0k	mdname = p->data;
250	34.0k	}
251	34.0k	}
252	62.8k	if (ciphername == NULL) {
253	62.8k	if ((p = OSSL_PARAM_locate_const(params,
254	62.8k	OSSL_ALG_PARAM_CIPHER))
255	62.8k	!= NULL) {
256	183	if (p->data_type != OSSL_PARAM_UTF8_STRING)
257	0	return 0;
258	183	ciphername = p->data;
259	183	}
260	62.8k	}
261	62.8k	if (engine == NULL) {
262	62.8k	if ((p = OSSL_PARAM_locate_const(params, OSSL_ALG_PARAM_ENGINE))
263	62.8k	!= NULL) {
264	0	if (p->data_type != OSSL_PARAM_UTF8_STRING)
265	0	return 0;
266	0	engine = p->data;
267	0	}
268	62.8k	}
269	62.8k	}
270
271	75.4k	if (mdname != NULL)
272	75.4k	*mp++ = OSSL_PARAM_construct_utf8_string(OSSL_MAC_PARAM_DIGEST,
273	75.4k	(char *)mdname, 0);
274	75.4k	if (ciphername != NULL)
275	183	*mp++ = OSSL_PARAM_construct_utf8_string(OSSL_MAC_PARAM_CIPHER,
276	183	(char *)ciphername, 0);
277	75.4k	if (properties != NULL)
278	2.35k	*mp++ = OSSL_PARAM_construct_utf8_string(OSSL_MAC_PARAM_PROPERTIES,
279	2.35k	(char *)properties, 0);
280
281	75.4k	#if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
282	75.4k	if (engine != NULL)
283	0	*mp++ = OSSL_PARAM_construct_utf8_string(OSSL_ALG_PARAM_ENGINE,
284	0	(char *)engine, 0);
285	75.4k	#endif
286
287	75.4k	if (key != NULL)
288	0	*mp++ = OSSL_PARAM_construct_octet_string(OSSL_MAC_PARAM_KEY,
289	0	(unsigned char *)key,
290	0	keylen);
291
292	75.4k	*mp = OSSL_PARAM_construct_end();
293
294	75.4k	return EVP_MAC_CTX_set_params(macctx, mac_params);
295	75.4k	}
296
297		int ossl_prov_macctx_load_from_params(EVP_MAC_CTX **macctx,
298		const OSSL_PARAM params[],
299		const char *macname,
300		const char *ciphername,
301		const char *mdname,
302		OSSL_LIB_CTX *libctx)
303	62.9k	{
304	62.9k	const OSSL_PARAM *p;
305	62.9k	const char *properties = NULL;
306
307	62.9k	if (macname == NULL
308	425	&& (p = OSSL_PARAM_locate_const(params, OSSL_ALG_PARAM_MAC)) != NULL) {
309	425	if (p->data_type != OSSL_PARAM_UTF8_STRING)
310	0	return 0;
311	425	macname = p->data;
312	425	}
313	62.9k	if ((p = OSSL_PARAM_locate_const(params,
314	62.9k	OSSL_ALG_PARAM_PROPERTIES))
315	62.9k	!= NULL) {
316	2.53k	if (p->data_type != OSSL_PARAM_UTF8_STRING)
317	0	return 0;
318	2.53k	properties = p->data;
319	2.53k	}
320
321		/* If we got a new mac name, we make a new EVP_MAC_CTX */
322	62.9k	if (macname != NULL) {
323	62.9k	EVP_MAC *mac = EVP_MAC_fetch(libctx, macname, properties);
324
325	62.9k	EVP_MAC_CTX_free(*macctx);
326	62.9k	*macctx = mac == NULL ? NULL : EVP_MAC_CTX_new(mac);
327		/* The context holds on to the MAC */
328	62.9k	EVP_MAC_free(mac);
329	62.9k	if (*macctx == NULL)
330	176	return 0;
331	62.9k	}
332
333		/*
334		* If there is no MAC yet (and therefore, no MAC context), we ignore
335		* all other parameters.
336		*/
337	62.8k	if (*macctx == NULL)
338	0	return 1;
339
340	62.8k	if (ossl_prov_set_macctx(*macctx, params, ciphername, mdname, NULL,
341	62.8k	properties, NULL, 0))
342	62.0k	return 1;
343
344	782	EVP_MAC_CTX_free(*macctx);
345	782	*macctx = NULL;
346	782	return 0;
347	62.8k	}
348
349		void ossl_prov_cache_exported_algorithms(const OSSL_ALGORITHM_CAPABLE *in,
350		OSSL_ALGORITHM *out)
351	99	{
352	99	int i, j;
353
354	99	if (out[0].algorithm_names == NULL) {
355	12.7k	for (i = j = 0; in[i].alg.algorithm_names != NULL; ++i) {
356	12.6k	if (in[i].capable == NULL \|\| in[i].capable())
357	12.3k	out[j++] = in[i].alg;
358	12.6k	}
359	95	out[j++] = in[i].alg;
360	95	}
361	99	}
362
363		/* Duplicate a lump of memory safely */
364		int ossl_prov_memdup(const void *src, size_t src_len,
365		unsigned char *dest, size_t dest_len)
366	0	{
367	0	if (src != NULL) {
368	0	if ((*dest = OPENSSL_memdup(src, src_len)) == NULL)
369	0	return 0;
370	0	*dest_len = src_len;
371	0	} else {
372	0	*dest = NULL;
373	0	*dest_len = 0;
374	0	}
375	0	return 1;
376	0	}