/src/openssl36/providers/implementations/rands/seed_src.c

Source
/*
 * Copyright 2020-2025 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
 */
/* clang-format off */

/* clang-format on */

#include <string.h>
#include <openssl/rand.h>
#include <openssl/core_dispatch.h>
#include <openssl/e_os2.h>
#include <openssl/params.h>
#include <openssl/core_names.h>
#include <openssl/evp.h>
#include <openssl/err.h>
#include <openssl/randerr.h>
#include <openssl/proverr.h>
#include "internal/common.h"
#include "prov/implementations.h"
#include "prov/provider_ctx.h"
#include "crypto/rand.h"
#include "crypto/rand_pool.h"

static OSSL_FUNC_rand_newctx_fn seed_src_new;
static OSSL_FUNC_rand_freectx_fn seed_src_free;
static OSSL_FUNC_rand_instantiate_fn seed_src_instantiate;
static OSSL_FUNC_rand_uninstantiate_fn seed_src_uninstantiate;
static OSSL_FUNC_rand_generate_fn seed_src_generate;
static OSSL_FUNC_rand_reseed_fn seed_src_reseed;
static OSSL_FUNC_rand_gettable_ctx_params_fn seed_src_gettable_ctx_params;
static OSSL_FUNC_rand_get_ctx_params_fn seed_src_get_ctx_params;
static OSSL_FUNC_rand_verify_zeroization_fn seed_src_verify_zeroization;
static OSSL_FUNC_rand_enable_locking_fn seed_src_enable_locking;
static OSSL_FUNC_rand_lock_fn seed_src_lock;
static OSSL_FUNC_rand_unlock_fn seed_src_unlock;
static OSSL_FUNC_rand_get_seed_fn seed_get_seed;
static OSSL_FUNC_rand_clear_seed_fn seed_clear_seed;

typedef struct {
    void *provctx;
    int state;
} PROV_SEED_SRC;

static void *seed_src_new(void *provctx, void *parent,
    const OSSL_DISPATCH *parent_dispatch)
{
    PROV_SEED_SRC *s;

    if (parent != NULL) {
        ERR_raise(ERR_LIB_PROV, PROV_R_SEED_SOURCES_MUST_NOT_HAVE_A_PARENT);
        return NULL;
    }

    s = OPENSSL_zalloc(sizeof(*s));
    if (s == NULL)
        return NULL;

    s->provctx = provctx;
    s->state = EVP_RAND_STATE_UNINITIALISED;
    return s;
}

static void seed_src_free(void *vseed)
{
    OPENSSL_free(vseed);
}

static int seed_src_instantiate(void *vseed, unsigned int strength,
    int prediction_resistance,
    const unsigned char *pstr, size_t pstr_len,
    ossl_unused const OSSL_PARAM params[])
{
    PROV_SEED_SRC *s = (PROV_SEED_SRC *)vseed;

    s->state = EVP_RAND_STATE_READY;
    return 1;
}

static int seed_src_uninstantiate(void *vseed)
{
    PROV_SEED_SRC *s = (PROV_SEED_SRC *)vseed;

    s->state = EVP_RAND_STATE_UNINITIALISED;
    return 1;
}

static int seed_src_generate(void *vseed, unsigned char *out, size_t outlen,
    unsigned int strength,
    ossl_unused int prediction_resistance,
    const unsigned char *adin,
    size_t adin_len)
{
    PROV_SEED_SRC *s = (PROV_SEED_SRC *)vseed;
    size_t entropy_available;
    RAND_POOL *pool;

    if (s->state != EVP_RAND_STATE_READY) {
        ERR_raise(ERR_LIB_PROV,
            s->state == EVP_RAND_STATE_ERROR ? PROV_R_IN_ERROR_STATE
                                             : PROV_R_NOT_INSTANTIATED);
        return 0;
    }

    pool = ossl_rand_pool_new(strength, 1, outlen, outlen);
    if (pool == NULL) {
        ERR_raise(ERR_LIB_PROV, ERR_R_RAND_LIB);
        return 0;
    }

    /* Get entropy by polling system entropy sources. */
    entropy_available = ossl_pool_acquire_entropy(pool);

    if (entropy_available > 0) {
        if (!ossl_rand_pool_adin_mix_in(pool, adin, adin_len)) {
            ossl_rand_pool_free(pool);
            return 0;
        }
        memcpy(out, ossl_rand_pool_buffer(pool), ossl_rand_pool_length(pool));
    }

    ossl_rand_pool_free(pool);
    return entropy_available > 0;
}

static int seed_src_reseed(void *vseed,
    ossl_unused int prediction_resistance,
    ossl_unused const unsigned char *ent,
    ossl_unused size_t ent_len,
    ossl_unused const unsigned char *adin,
    ossl_unused size_t adin_len)
{
    PROV_SEED_SRC *s = (PROV_SEED_SRC *)vseed;

    if (s->state != EVP_RAND_STATE_READY) {
        ERR_raise(ERR_LIB_PROV,
            s->state == EVP_RAND_STATE_ERROR ? PROV_R_IN_ERROR_STATE
                                             : PROV_R_NOT_INSTANTIATED);
        return 0;
    }
    return 1;
}

/* clang-format off */
/* Machine generated by util/perl/OpenSSL/paramnames.pm */
#ifndef seed_src_get_ctx_params_list
static const OSSL_PARAM seed_src_get_ctx_params_list[] = {
    OSSL_PARAM_int(OSSL_RAND_PARAM_STATE, NULL),
    OSSL_PARAM_uint(OSSL_RAND_PARAM_STRENGTH, NULL),
    OSSL_PARAM_size_t(OSSL_RAND_PARAM_MAX_REQUEST, NULL),
    OSSL_PARAM_END
};
#endif

#ifndef seed_src_get_ctx_params_st
struct seed_src_get_ctx_params_st {
    OSSL_PARAM *maxreq;
    OSSL_PARAM *state;
    OSSL_PARAM *str;
};
#endif

#ifndef seed_src_get_ctx_params_decoder
static int seed_src_get_ctx_params_decoder
    (const OSSL_PARAM *p, struct seed_src_get_ctx_params_st *r)
{
    const char *s;

    memset(r, 0, sizeof(*r));
    if (p != NULL)
        for (; (s = p->key) != NULL; p++)
            switch(s[0]) {
            default:
                break;
            case 'm':
                if (ossl_likely(strcmp("ax_request", s + 1) == 0)) {
                    /* OSSL_RAND_PARAM_MAX_REQUEST */
                    if (ossl_unlikely(r->maxreq != NULL)) {
                        ERR_raise_data(ERR_LIB_PROV, PROV_R_REPEATED_PARAMETER,
                                       "param %s is repeated", s);
                        return 0;
                    }
                    r->maxreq = (OSSL_PARAM *)p;
                }
                break;
            case 's':
                switch(s[1]) {
                default:
                    break;
                case 't':
                    switch(s[2]) {
                    default:
                        break;
                    case 'a':
                        if (ossl_likely(strcmp("te", s + 3) == 0)) {
                            /* OSSL_RAND_PARAM_STATE */
                            if (ossl_unlikely(r->state != NULL)) {
                                ERR_raise_data(ERR_LIB_PROV, PROV_R_REPEATED_PARAMETER,
                                               "param %s is repeated", s);
                                return 0;
                            }
                            r->state = (OSSL_PARAM *)p;
                        }
                        break;
                    case 'r':
                        if (ossl_likely(strcmp("ength", s + 3) == 0)) {
                            /* OSSL_RAND_PARAM_STRENGTH */
                            if (ossl_unlikely(r->str != NULL)) {
                                ERR_raise_data(ERR_LIB_PROV, PROV_R_REPEATED_PARAMETER,
                                               "param %s is repeated", s);
                                return 0;
                            }
                            r->str = (OSSL_PARAM *)p;
                        }
                    }
                }
            }
    return 1;
}
#endif
/* End of machine generated */
/* clang-format on */

static int seed_src_get_ctx_params(void *vseed, OSSL_PARAM params[])
{
    PROV_SEED_SRC *s = (PROV_SEED_SRC *)vseed;
    struct seed_src_get_ctx_params_st p;

    if (s == NULL || !seed_src_get_ctx_params_decoder(params, &p))
        return 0;

    if (p.state != NULL && !OSSL_PARAM_set_int(p.state, s->state))
        return 0;

    if (p.str != NULL && !OSSL_PARAM_set_uint(p.str, 1024))
        return 0;

    if (p.maxreq != NULL && !OSSL_PARAM_set_size_t(p.maxreq, 128))
        return 0;
    return 1;
}

static const OSSL_PARAM *seed_src_gettable_ctx_params(ossl_unused void *vseed,
    ossl_unused void *provctx)
{
    return seed_src_get_ctx_params_list;
}

static int seed_src_verify_zeroization(ossl_unused void *vseed)
{
    return 1;
}

static size_t seed_get_seed(void *vseed, unsigned char **pout,
    int entropy, size_t min_len, size_t max_len,
    int prediction_resistance,
    const unsigned char *adin, size_t adin_len)
{
    size_t ret = 0;
    size_t entropy_available = 0;
    RAND_POOL *pool;

    pool = ossl_rand_pool_new(entropy, 1, min_len, max_len);
    if (pool == NULL) {
        ERR_raise(ERR_LIB_PROV, ERR_R_RAND_LIB);
        return 0;
    }

    /* Get entropy by polling system entropy sources. */
    entropy_available = ossl_pool_acquire_entropy(pool);

    if (entropy_available > 0
        && ossl_rand_pool_adin_mix_in(pool, adin, adin_len)) {
        ret = ossl_rand_pool_length(pool);
        *pout = ossl_rand_pool_detach(pool);
    } else {
        ERR_raise(ERR_LIB_PROV, PROV_R_ENTROPY_SOURCE_STRENGTH_TOO_WEAK);
    }
    ossl_rand_pool_free(pool);
    return ret;
}

static void seed_clear_seed(ossl_unused void *vdrbg,
    unsigned char *out, size_t outlen)
{
    OPENSSL_secure_clear_free(out, outlen);
}

static int seed_src_enable_locking(ossl_unused void *vseed)
{
    return 1;
}

int seed_src_lock(ossl_unused void *vctx)
{
    return 1;
}

void seed_src_unlock(ossl_unused void *vctx)
{
}

const OSSL_DISPATCH ossl_seed_src_functions[] = {
    { OSSL_FUNC_RAND_NEWCTX, (void (*)(void))seed_src_new },
    { OSSL_FUNC_RAND_FREECTX, (void (*)(void))seed_src_free },
    { OSSL_FUNC_RAND_INSTANTIATE,
        (void (*)(void))seed_src_instantiate },
    { OSSL_FUNC_RAND_UNINSTANTIATE,
        (void (*)(void))seed_src_uninstantiate },
    { OSSL_FUNC_RAND_GENERATE, (void (*)(void))seed_src_generate },
    { OSSL_FUNC_RAND_RESEED, (void (*)(void))seed_src_reseed },
    { OSSL_FUNC_RAND_ENABLE_LOCKING, (void (*)(void))seed_src_enable_locking },
    { OSSL_FUNC_RAND_LOCK, (void (*)(void))seed_src_lock },
    { OSSL_FUNC_RAND_UNLOCK, (void (*)(void))seed_src_unlock },
    { OSSL_FUNC_RAND_GETTABLE_CTX_PARAMS,
        (void (*)(void))seed_src_gettable_ctx_params },
    { OSSL_FUNC_RAND_GET_CTX_PARAMS, (void (*)(void))seed_src_get_ctx_params },
    { OSSL_FUNC_RAND_VERIFY_ZEROIZATION,
        (void (*)(void))seed_src_verify_zeroization },
    { OSSL_FUNC_RAND_GET_SEED, (void (*)(void))seed_get_seed },
    { OSSL_FUNC_RAND_CLEAR_SEED, (void (*)(void))seed_clear_seed },
    OSSL_DISPATCH_END
};

Coverage Report

Created: 2025-12-31 06:58

Line	Count	Source
1		/*
2		* Copyright 2020-2025 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		/* clang-format off */
10
11		/* clang-format on */
12
13		#include <string.h>
14		#include <openssl/rand.h>
15		#include <openssl/core_dispatch.h>
16		#include <openssl/e_os2.h>
17		#include <openssl/params.h>
18		#include <openssl/core_names.h>
19		#include <openssl/evp.h>
20		#include <openssl/err.h>
21		#include <openssl/randerr.h>
22		#include <openssl/proverr.h>
23		#include "internal/common.h"
24		#include "prov/implementations.h"
25		#include "prov/provider_ctx.h"
26		#include "crypto/rand.h"
27		#include "crypto/rand_pool.h"
28
29		static OSSL_FUNC_rand_newctx_fn seed_src_new;
30		static OSSL_FUNC_rand_freectx_fn seed_src_free;
31		static OSSL_FUNC_rand_instantiate_fn seed_src_instantiate;
32		static OSSL_FUNC_rand_uninstantiate_fn seed_src_uninstantiate;
33		static OSSL_FUNC_rand_generate_fn seed_src_generate;
34		static OSSL_FUNC_rand_reseed_fn seed_src_reseed;
35		static OSSL_FUNC_rand_gettable_ctx_params_fn seed_src_gettable_ctx_params;
36		static OSSL_FUNC_rand_get_ctx_params_fn seed_src_get_ctx_params;
37		static OSSL_FUNC_rand_verify_zeroization_fn seed_src_verify_zeroization;
38		static OSSL_FUNC_rand_enable_locking_fn seed_src_enable_locking;
39		static OSSL_FUNC_rand_lock_fn seed_src_lock;
40		static OSSL_FUNC_rand_unlock_fn seed_src_unlock;
41		static OSSL_FUNC_rand_get_seed_fn seed_get_seed;
42		static OSSL_FUNC_rand_clear_seed_fn seed_clear_seed;
43
44		typedef struct {
45		void *provctx;
46		int state;
47		} PROV_SEED_SRC;
48
49		static void seed_src_new(void provctx, void *parent,
50		const OSSL_DISPATCH *parent_dispatch)
51	84	{
52	84	PROV_SEED_SRC *s;
53
54	84	if (parent != NULL) {
55	0	ERR_raise(ERR_LIB_PROV, PROV_R_SEED_SOURCES_MUST_NOT_HAVE_A_PARENT);
56	0	return NULL;
57	0	}
58
59	84	s = OPENSSL_zalloc(sizeof(*s));
60	84	if (s == NULL)
61	0	return NULL;
62
63	84	s->provctx = provctx;
64	84	s->state = EVP_RAND_STATE_UNINITIALISED;
65	84	return s;
66	84	}
67
68		static void seed_src_free(void *vseed)
69	66	{
70	66	OPENSSL_free(vseed);
71	66	}
72
73		static int seed_src_instantiate(void *vseed, unsigned int strength,
74		int prediction_resistance,
75		const unsigned char *pstr, size_t pstr_len,
76		ossl_unused const OSSL_PARAM params[])
77	78	{
78	78	PROV_SEED_SRC s = (PROV_SEED_SRC )vseed;
79
80	78	s->state = EVP_RAND_STATE_READY;
81	78	return 1;
82	78	}
83
84		static int seed_src_uninstantiate(void *vseed)
85	0	{
86	0	PROV_SEED_SRC s = (PROV_SEED_SRC )vseed;
87
88	0	s->state = EVP_RAND_STATE_UNINITIALISED;
89	0	return 1;
90	0	}
91
92		static int seed_src_generate(void vseed, unsigned char out, size_t outlen,
93		unsigned int strength,
94		ossl_unused int prediction_resistance,
95		const unsigned char *adin,
96		size_t adin_len)
97	46	{
98	46	PROV_SEED_SRC s = (PROV_SEED_SRC )vseed;
99	46	size_t entropy_available;
100	46	RAND_POOL *pool;
101
102	46	if (s->state != EVP_RAND_STATE_READY) {
103	4	ERR_raise(ERR_LIB_PROV,
104	4	s->state == EVP_RAND_STATE_ERROR ? PROV_R_IN_ERROR_STATE
105	4	: PROV_R_NOT_INSTANTIATED);
106	4	return 0;
107	4	}
108
109	42	pool = ossl_rand_pool_new(strength, 1, outlen, outlen);
110	42	if (pool == NULL) {
111	0	ERR_raise(ERR_LIB_PROV, ERR_R_RAND_LIB);
112	0	return 0;
113	0	}
114
115		/* Get entropy by polling system entropy sources. */
116	42	entropy_available = ossl_pool_acquire_entropy(pool);
117
118	42	if (entropy_available > 0) {
119	42	if (!ossl_rand_pool_adin_mix_in(pool, adin, adin_len)) {
120	0	ossl_rand_pool_free(pool);
121	0	return 0;
122	0	}
123	42	memcpy(out, ossl_rand_pool_buffer(pool), ossl_rand_pool_length(pool));
124	42	}
125
126	42	ossl_rand_pool_free(pool);
127	42	return entropy_available > 0;
128	42	}
129
130		static int seed_src_reseed(void *vseed,
131		ossl_unused int prediction_resistance,
132		ossl_unused const unsigned char *ent,
133		ossl_unused size_t ent_len,
134		ossl_unused const unsigned char *adin,
135		ossl_unused size_t adin_len)
136	0	{
137	0	PROV_SEED_SRC s = (PROV_SEED_SRC )vseed;
138
139	0	if (s->state != EVP_RAND_STATE_READY) {
140	0	ERR_raise(ERR_LIB_PROV,
141	0	s->state == EVP_RAND_STATE_ERROR ? PROV_R_IN_ERROR_STATE
142	0	: PROV_R_NOT_INSTANTIATED);
143	0	return 0;
144	0	}
145	0	return 1;
146	0	}
147
148		/* clang-format off */
149		/* Machine generated by util/perl/OpenSSL/paramnames.pm */
150		#ifndef seed_src_get_ctx_params_list
151		static const OSSL_PARAM seed_src_get_ctx_params_list[] = {
152		OSSL_PARAM_int(OSSL_RAND_PARAM_STATE, NULL),
153		OSSL_PARAM_uint(OSSL_RAND_PARAM_STRENGTH, NULL),
154		OSSL_PARAM_size_t(OSSL_RAND_PARAM_MAX_REQUEST, NULL),
155		OSSL_PARAM_END
156		};
157		#endif
158
159		#ifndef seed_src_get_ctx_params_st
160		struct seed_src_get_ctx_params_st {
161		OSSL_PARAM *maxreq;
162		OSSL_PARAM *state;
163		OSSL_PARAM *str;
164		};
165		#endif
166
167		#ifndef seed_src_get_ctx_params_decoder
168		static int seed_src_get_ctx_params_decoder
169		(const OSSL_PARAM p, struct seed_src_get_ctx_params_st r)
170	92	{
171	92	const char *s;
172
173	92	memset(r, 0, sizeof(*r));
174	92	if (p != NULL)
175	184	for (; (s = p->key) != NULL; p++)
176	92	switch(s[0]) {
177	30	default:
178	30	break;
179	44	case 'm':
180	44	if (ossl_likely(strcmp("ax_request", s + 1) == 0)) {
181		/* OSSL_RAND_PARAM_MAX_REQUEST */
182	44	if (ossl_unlikely(r->maxreq != NULL)) {
183	0	ERR_raise_data(ERR_LIB_PROV, PROV_R_REPEATED_PARAMETER,
184	0	"param %s is repeated", s);
185	0	return 0;
186	0	}
187	44	r->maxreq = (OSSL_PARAM *)p;
188	44	}
189	44	break;
190	44	case 's':
191	18	switch(s[1]) {
192	0	default:
193	0	break;
194	18	case 't':
195	18	switch(s[2]) {
196	0	default:
197	0	break;
198	0	case 'a':
199	0	if (ossl_likely(strcmp("te", s + 3) == 0)) {
200		/* OSSL_RAND_PARAM_STATE */
201	0	if (ossl_unlikely(r->state != NULL)) {
202	0	ERR_raise_data(ERR_LIB_PROV, PROV_R_REPEATED_PARAMETER,
203	0	"param %s is repeated", s);
204	0	return 0;
205	0	}
206	0	r->state = (OSSL_PARAM *)p;
207	0	}
208	0	break;
209	18	case 'r':
210	18	if (ossl_likely(strcmp("ength", s + 3) == 0)) {
211		/* OSSL_RAND_PARAM_STRENGTH */
212	18	if (ossl_unlikely(r->str != NULL)) {
213	0	ERR_raise_data(ERR_LIB_PROV, PROV_R_REPEATED_PARAMETER,
214	0	"param %s is repeated", s);
215	0	return 0;
216	0	}
217	18	r->str = (OSSL_PARAM *)p;
218	18	}
219	18	}
220	18	}
221	92	}
222	92	return 1;
223	92	}
224		#endif
225		/* End of machine generated */
226		/* clang-format on */
227
228		static int seed_src_get_ctx_params(void *vseed, OSSL_PARAM params[])
229	92	{
230	92	PROV_SEED_SRC s = (PROV_SEED_SRC )vseed;
231	92	struct seed_src_get_ctx_params_st p;
232
233	92	if (s == NULL \|\| !seed_src_get_ctx_params_decoder(params, &p))
234	0	return 0;
235
236	92	if (p.state != NULL && !OSSL_PARAM_set_int(p.state, s->state))
237	0	return 0;
238
239	92	if (p.str != NULL && !OSSL_PARAM_set_uint(p.str, 1024))
240	0	return 0;
241
242	92	if (p.maxreq != NULL && !OSSL_PARAM_set_size_t(p.maxreq, 128))
243	0	return 0;
244	92	return 1;
245	92	}
246
247		static const OSSL_PARAM seed_src_gettable_ctx_params(ossl_unused void vseed,
248		ossl_unused void *provctx)
249	0	{
250	0	return seed_src_get_ctx_params_list;
251	0	}
252
253		static int seed_src_verify_zeroization(ossl_unused void *vseed)
254	0	{
255	0	return 1;
256	0	}
257
258		static size_t seed_get_seed(void vseed, unsigned char *pout,
259		int entropy, size_t min_len, size_t max_len,
260		int prediction_resistance,
261		const unsigned char *adin, size_t adin_len)
262	105	{
263	105	size_t ret = 0;
264	105	size_t entropy_available = 0;
265	105	RAND_POOL *pool;
266
267	105	pool = ossl_rand_pool_new(entropy, 1, min_len, max_len);
268	105	if (pool == NULL) {
269	0	ERR_raise(ERR_LIB_PROV, ERR_R_RAND_LIB);
270	0	return 0;
271	0	}
272
273		/* Get entropy by polling system entropy sources. */
274	105	entropy_available = ossl_pool_acquire_entropy(pool);
275
276	105	if (entropy_available > 0
277	105	&& ossl_rand_pool_adin_mix_in(pool, adin, adin_len)) {
278	105	ret = ossl_rand_pool_length(pool);
279	105	*pout = ossl_rand_pool_detach(pool);
280	105	} else {
281	0	ERR_raise(ERR_LIB_PROV, PROV_R_ENTROPY_SOURCE_STRENGTH_TOO_WEAK);
282	0	}
283	105	ossl_rand_pool_free(pool);
284	105	return ret;
285	105	}
286
287		static void seed_clear_seed(ossl_unused void *vdrbg,
288		unsigned char *out, size_t outlen)
289	161	{
290	161	OPENSSL_secure_clear_free(out, outlen);
291	161	}
292
293		static int seed_src_enable_locking(ossl_unused void *vseed)
294	17	{
295	17	return 1;
296	17	}
297
298		int seed_src_lock(ossl_unused void *vctx)
299	562	{
300	562	return 1;
301	562	}
302
303		void seed_src_unlock(ossl_unused void *vctx)
304	562	{
305	562	}
306
307		const OSSL_DISPATCH ossl_seed_src_functions[] = {
308		{ OSSL_FUNC_RAND_NEWCTX, (void (*)(void))seed_src_new },
309		{ OSSL_FUNC_RAND_FREECTX, (void (*)(void))seed_src_free },
310		{ OSSL_FUNC_RAND_INSTANTIATE,
311		(void (*)(void))seed_src_instantiate },
312		{ OSSL_FUNC_RAND_UNINSTANTIATE,
313		(void (*)(void))seed_src_uninstantiate },
314		{ OSSL_FUNC_RAND_GENERATE, (void (*)(void))seed_src_generate },
315		{ OSSL_FUNC_RAND_RESEED, (void (*)(void))seed_src_reseed },
316		{ OSSL_FUNC_RAND_ENABLE_LOCKING, (void (*)(void))seed_src_enable_locking },
317		{ OSSL_FUNC_RAND_LOCK, (void (*)(void))seed_src_lock },
318		{ OSSL_FUNC_RAND_UNLOCK, (void (*)(void))seed_src_unlock },
319		{ OSSL_FUNC_RAND_GETTABLE_CTX_PARAMS,
320		(void (*)(void))seed_src_gettable_ctx_params },
321		{ OSSL_FUNC_RAND_GET_CTX_PARAMS, (void (*)(void))seed_src_get_ctx_params },
322		{ OSSL_FUNC_RAND_VERIFY_ZEROIZATION,
323		(void (*)(void))seed_src_verify_zeroization },
324		{ OSSL_FUNC_RAND_GET_SEED, (void (*)(void))seed_get_seed },
325		{ OSSL_FUNC_RAND_CLEAR_SEED, (void (*)(void))seed_clear_seed },
326		OSSL_DISPATCH_END
327		};