[thirdparty/openssl.git] / crypto / ec / ec_kmeth.c

/*
 * Copyright 2015-2016 The OpenSSL Project Authors. All Rights Reserved.
 *
 * Licensed under the OpenSSL license (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 <string.h>
#include <openssl/ec.h>
#include <openssl/engine.h>
#include <openssl/err.h>
#include "ec_lcl.h"


static const EC_KEY_METHOD openssl_ec_key_method = {
    "OpenSSL EC_KEY method",
    0,
    0,0,0,0,0,0,
    ossl_ec_key_gen,
    ossl_ecdh_compute_key,
    ossl_ecdsa_sign,
    ossl_ecdsa_sign_setup,
    ossl_ecdsa_sign_sig,
    ossl_ecdsa_verify,
    ossl_ecdsa_verify_sig
};

static const EC_KEY_METHOD *default_ec_key_meth = &openssl_ec_key_method;

const EC_KEY_METHOD *EC_KEY_OpenSSL(void)
{
    return &openssl_ec_key_method;
}

const EC_KEY_METHOD *EC_KEY_get_default_method(void)
{
    return default_ec_key_meth;
}

void EC_KEY_set_default_method(const EC_KEY_METHOD *meth)
{
    if (meth == NULL)
        default_ec_key_meth = &openssl_ec_key_method;
    else
        default_ec_key_meth = meth;
}

const EC_KEY_METHOD *EC_KEY_get_method(const EC_KEY *key)
{
    return key->meth;
}

int EC_KEY_set_method(EC_KEY *key, const EC_KEY_METHOD *meth)
{
    void (*finish)(EC_KEY *key) = key->meth->finish;

    if (finish != NULL)
        finish(key);

#ifndef OPENSSL_NO_ENGINE
    ENGINE_finish(key->engine);
    key->engine = NULL;
#endif

    key->meth = meth;
    if (meth->init != NULL)
        return meth->init(key);
    return 1;
}

EC_KEY *EC_KEY_new_method(ENGINE *engine)
{
    EC_KEY *ret = OPENSSL_zalloc(sizeof(*ret));

    if (ret == NULL) {
        ECerr(EC_F_EC_KEY_NEW_METHOD, ERR_R_MALLOC_FAILURE);
        return NULL;
    }
    if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_EC_KEY, ret, &ret->ex_data)) {
        OPENSSL_free(ret);
        return NULL;
    }

    ret->lock = CRYPTO_THREAD_lock_new();
    if (ret->lock == NULL) {
        ECerr(EC_F_EC_KEY_NEW_METHOD, ERR_R_MALLOC_FAILURE);
        CRYPTO_free_ex_data(CRYPTO_EX_INDEX_EC_KEY, ret, &ret->ex_data);
        OPENSSL_free(ret);
        return NULL;
    }

    ret->meth = EC_KEY_get_default_method();
#ifndef OPENSSL_NO_ENGINE
    if (engine != NULL) {
        if (!ENGINE_init(engine)) {
            ECerr(EC_F_EC_KEY_NEW_METHOD, ERR_R_ENGINE_LIB);
            CRYPTO_free_ex_data(CRYPTO_EX_INDEX_EC_KEY, ret, &ret->ex_data);
            CRYPTO_THREAD_lock_free(ret->lock);
            OPENSSL_free(ret);
            return NULL;
        }
        ret->engine = engine;
    } else
        ret->engine = ENGINE_get_default_EC();
    if (ret->engine != NULL) {
        ret->meth = ENGINE_get_EC(ret->engine);
        if (ret->meth == NULL) {
            ECerr(EC_F_EC_KEY_NEW_METHOD, ERR_R_ENGINE_LIB);
            ENGINE_finish(ret->engine);
            CRYPTO_free_ex_data(CRYPTO_EX_INDEX_EC_KEY, ret, &ret->ex_data);
            CRYPTO_THREAD_lock_free(ret->lock);
            OPENSSL_free(ret);
            return NULL;
        }
    }
#endif

    ret->version = 1;
    ret->conv_form = POINT_CONVERSION_UNCOMPRESSED;
    ret->references = 1;

    if (ret->meth->init != NULL && ret->meth->init(ret) == 0) {
        ECerr(EC_F_EC_KEY_NEW_METHOD, ERR_R_INIT_FAIL);
        EC_KEY_free(ret);
        return NULL;
    }
    return ret;
}

int ECDH_compute_key(void *out, size_t outlen, const EC_POINT *pub_key,
                     const EC_KEY *eckey,
                     void *(*KDF) (const void *in, size_t inlen, void *out,
                                   size_t *outlen))
{
    unsigned char *sec = NULL;
    size_t seclen;
    if (eckey->meth->compute_key == NULL) {
        ECerr(EC_F_ECDH_COMPUTE_KEY, EC_R_OPERATION_NOT_SUPPORTED);
        return 0;
    }
    if (outlen > INT_MAX) {
        ECerr(EC_F_ECDH_COMPUTE_KEY, EC_R_INVALID_OUTPUT_LENGTH);
        return 0;
    }
    if (!eckey->meth->compute_key(&sec, &seclen, pub_key, eckey))
        return 0;
    if (KDF != NULL) {
        KDF(sec, seclen, out, &outlen);
    } else {
        if (outlen > seclen)
            outlen = seclen;
        memcpy(out, sec, outlen);
    }
    OPENSSL_clear_free(sec, seclen);
    return outlen;
}

EC_KEY_METHOD *EC_KEY_METHOD_new(const EC_KEY_METHOD *meth)
{
    EC_KEY_METHOD *ret = OPENSSL_zalloc(sizeof(*meth));

    if (ret == NULL)
        return NULL;
    if (meth != NULL)
        *ret = *meth;
    ret->flags |= EC_KEY_METHOD_DYNAMIC;
    return ret;
}

void EC_KEY_METHOD_free(EC_KEY_METHOD *meth)
{
    if (meth->flags & EC_KEY_METHOD_DYNAMIC)
        OPENSSL_free(meth);
}

void EC_KEY_METHOD_set_init(EC_KEY_METHOD *meth,
                            int (*init)(EC_KEY *key),
                            void (*finish)(EC_KEY *key),
                            int (*copy)(EC_KEY *dest, const EC_KEY *src),
                            int (*set_group)(EC_KEY *key, const EC_GROUP *grp),
                            int (*set_private)(EC_KEY *key,
                                               const BIGNUM *priv_key),
                            int (*set_public)(EC_KEY *key,
                                              const EC_POINT *pub_key))
{
    meth->init = init;
    meth->finish = finish;
    meth->copy = copy;
    meth->set_group = set_group;
    meth->set_private = set_private;
    meth->set_public = set_public;
}

void EC_KEY_METHOD_set_keygen(EC_KEY_METHOD *meth,
                              int (*keygen)(EC_KEY *key))
{
    meth->keygen = keygen;
}

void EC_KEY_METHOD_set_compute_key(EC_KEY_METHOD *meth,
                                   int (*ckey)(unsigned char **psec,
                                               size_t *pseclen,
                                               const EC_POINT *pub_key,
                                               const EC_KEY *ecdh))
{
    meth->compute_key = ckey;
}

void EC_KEY_METHOD_set_sign(EC_KEY_METHOD *meth,
                            int (*sign)(int type, const unsigned char *dgst,
                                        int dlen, unsigned char *sig,
                                        unsigned int *siglen,
                                        const BIGNUM *kinv, const BIGNUM *r,
                                        EC_KEY *eckey),
                            int (*sign_setup)(EC_KEY *eckey, BN_CTX *ctx_in,
                                              BIGNUM **kinvp, BIGNUM **rp),
                            ECDSA_SIG *(*sign_sig)(const unsigned char *dgst,
                                                   int dgst_len,
                                                   const BIGNUM *in_kinv,
                                                   const BIGNUM *in_r,
                                                   EC_KEY *eckey))
{
    meth->sign = sign;
    meth->sign_setup = sign_setup;
    meth->sign_sig = sign_sig;
}

void EC_KEY_METHOD_set_verify(EC_KEY_METHOD *meth,
                              int (*verify)(int type, const unsigned
                                            char *dgst, int dgst_len,
                                            const unsigned char *sigbuf,
                                            int sig_len, EC_KEY *eckey),
                              int (*verify_sig)(const unsigned char *dgst,
                                                int dgst_len,
                                                const ECDSA_SIG *sig,
                                                EC_KEY *eckey))
{
    meth->verify = verify;
    meth->verify_sig = verify_sig;
}

void EC_KEY_METHOD_get_init(EC_KEY_METHOD *meth,
                            int (**pinit)(EC_KEY *key),
                            void (**pfinish)(EC_KEY *key),
                            int (**pcopy)(EC_KEY *dest, const EC_KEY *src),
                            int (**pset_group)(EC_KEY *key,
                                               const EC_GROUP *grp),
                            int (**pset_private)(EC_KEY *key,
                                                 const BIGNUM *priv_key),
                            int (**pset_public)(EC_KEY *key,
                                                const EC_POINT *pub_key))
{
    if (pinit != NULL)
        *pinit = meth->init;
    if (pfinish != NULL)
        *pfinish = meth->finish;
    if (pcopy != NULL)
        *pcopy = meth->copy;
    if (pset_group != NULL)
        *pset_group = meth->set_group;
    if (pset_private != NULL)
        *pset_private = meth->set_private;
    if (pset_public != NULL)
        *pset_public = meth->set_public;
}

void EC_KEY_METHOD_get_keygen(EC_KEY_METHOD *meth,
                              int (**pkeygen)(EC_KEY *key))
{
    if (pkeygen != NULL)
        *pkeygen = meth->keygen;
}

void EC_KEY_METHOD_get_compute_key(EC_KEY_METHOD *meth,
                                   int (**pck)(unsigned char **pout,
                                               size_t *poutlen,
                                               const EC_POINT *pub_key,
                                               const EC_KEY *ecdh))
{
    if (pck != NULL)
        *pck = meth->compute_key;
}

void EC_KEY_METHOD_get_sign(EC_KEY_METHOD *meth,
                            int (**psign)(int type, const unsigned char *dgst,
                                          int dlen, unsigned char *sig,
                                          unsigned int *siglen,
                                          const BIGNUM *kinv, const BIGNUM *r,
                                          EC_KEY *eckey),
                            int (**psign_setup)(EC_KEY *eckey, BN_CTX *ctx_in,
                                                BIGNUM **kinvp, BIGNUM **rp),
                            ECDSA_SIG *(**psign_sig)(const unsigned char *dgst,
                                                     int dgst_len,
                                                     const BIGNUM *in_kinv,
                                                     const BIGNUM *in_r,
                                                     EC_KEY *eckey))
{
    if (psign != NULL)
        *psign = meth->sign;
    if (psign_setup != NULL)
        *psign_setup = meth->sign_setup;
    if (psign_sig != NULL)
        *psign_sig = meth->sign_sig;
}

void EC_KEY_METHOD_get_verify(EC_KEY_METHOD *meth,
                              int (**pverify)(int type, const unsigned
                                              char *dgst, int dgst_len,
                                              const unsigned char *sigbuf,
                                              int sig_len, EC_KEY *eckey),
                              int (**pverify_sig)(const unsigned char *dgst,
                                                  int dgst_len,
                                                  const ECDSA_SIG *sig,
                                                  EC_KEY *eckey))
{
    if (pverify != NULL)
        *pverify = meth->verify;
    if (pverify_sig != NULL)
        *pverify_sig = meth->verify_sig;
}
Commit	Line	Data
28572b57	1	/*
4f22f405	2	* Copyright 2015-2016 The OpenSSL Project Authors. All Rights Reserved.
28572b57	3	*
4f22f405 RS	4	* Licensed under the OpenSSL license (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
28572b57 DSH	8	*/
28572b57 DSH	9
e2285d87	10	#include <string.h>
28572b57	11	#include <openssl/ec.h>
3c27208f	12	#include <openssl/engine.h>
28572b57 DSH	13	#include <openssl/err.h>
	14	#include "ec_lcl.h"
	15
	16
	17	static const EC_KEY_METHOD openssl_ec_key_method = {
	18	"OpenSSL EC_KEY method",
5a6a1029	19	0,
3475bc96	20	0,0,0,0,0,0,
a22a7e70	21	ossl_ec_key_gen,
8c6ef786	22	ossl_ecdh_compute_key,
a200a817	23	ossl_ecdsa_sign,
8c6ef786 DSH	24	ossl_ecdsa_sign_setup,
8c6ef786 DSH	25	ossl_ecdsa_sign_sig,
a200a817	26	ossl_ecdsa_verify,
8c6ef786	27	ossl_ecdsa_verify_sig
28572b57 DSH	28	};
28572b57 DSH	29
a0ffedaf	30	static const EC_KEY_METHOD *default_ec_key_meth = &openssl_ec_key_method;
28572b57 DSH	31
	32	const EC_KEY_METHOD *EC_KEY_OpenSSL(void)
	33	{
	34	return &openssl_ec_key_method;
	35	}
	36
	37	const EC_KEY_METHOD *EC_KEY_get_default_method(void)
	38	{
	39	return default_ec_key_meth;
	40	}
	41
	42	void EC_KEY_set_default_method(const EC_KEY_METHOD *meth)
	43	{
	44	if (meth == NULL)
	45	default_ec_key_meth = &openssl_ec_key_method;
	46	else
	47	default_ec_key_meth = meth;
	48	}
	49
3aef36ff RS	50	const EC_KEY_METHOD EC_KEY_get_method(const EC_KEY key)
	51	{
	52	return key->meth;
	53	}
	54
	55	int EC_KEY_set_method(EC_KEY key, const EC_KEY_METHOD meth)
	56	{
	57	void (finish)(EC_KEY key) = key->meth->finish;
	58
	59	if (finish != NULL)
	60	finish(key);
	61
	62	#ifndef OPENSSL_NO_ENGINE
7c96dbcd RS	63	ENGINE_finish(key->engine);
7c96dbcd RS	64	key->engine = NULL;
3aef36ff RS	65	#endif
	66
	67	key->meth = meth;
	68	if (meth->init != NULL)
	69	return meth->init(key);
	70	return 1;
	71	}
	72
28572b57 DSH	73	EC_KEY EC_KEY_new_method(ENGINE engine)
	74	{
	75	EC_KEY ret = OPENSSL_zalloc(sizeof(ret));
	76
	77	if (ret == NULL) {
	78	ECerr(EC_F_EC_KEY_NEW_METHOD, ERR_R_MALLOC_FAILURE);
9b398ef2	79	return NULL;
28572b57	80	}
3aef36ff RS	81	if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_EC_KEY, ret, &ret->ex_data)) {
	82	OPENSSL_free(ret);
	83	return NULL;
	84	}
	85
9b398ef2 AG	86	ret->lock = CRYPTO_THREAD_lock_new();
	87	if (ret->lock == NULL) {
	88	ECerr(EC_F_EC_KEY_NEW_METHOD, ERR_R_MALLOC_FAILURE);
	89	CRYPTO_free_ex_data(CRYPTO_EX_INDEX_EC_KEY, ret, &ret->ex_data);
	90	OPENSSL_free(ret);
	91	return NULL;
	92	}
	93
28572b57 DSH	94	ret->meth = EC_KEY_get_default_method();
28572b57 DSH	95	#ifndef OPENSSL_NO_ENGINE
91e7bcc2	96	if (engine != NULL) {
28572b57 DSH	97	if (!ENGINE_init(engine)) {
28572b57 DSH	98	ECerr(EC_F_EC_KEY_NEW_METHOD, ERR_R_ENGINE_LIB);
9b398ef2	99	CRYPTO_free_ex_data(CRYPTO_EX_INDEX_EC_KEY, ret, &ret->ex_data);
c001ce33	100	CRYPTO_THREAD_lock_free(ret->lock);
28572b57 DSH	101	OPENSSL_free(ret);
	102	return NULL;
	103	}
	104	ret->engine = engine;
	105	} else
7d711cbc	106	ret->engine = ENGINE_get_default_EC();
91e7bcc2	107	if (ret->engine != NULL) {
7d711cbc	108	ret->meth = ENGINE_get_EC(ret->engine);
91e7bcc2	109	if (ret->meth == NULL) {
28572b57 DSH	110	ECerr(EC_F_EC_KEY_NEW_METHOD, ERR_R_ENGINE_LIB);
28572b57 DSH	111	ENGINE_finish(ret->engine);
9b398ef2	112	CRYPTO_free_ex_data(CRYPTO_EX_INDEX_EC_KEY, ret, &ret->ex_data);
c001ce33	113	CRYPTO_THREAD_lock_free(ret->lock);
28572b57 DSH	114	OPENSSL_free(ret);
	115	return NULL;
	116	}
	117	}
	118	#endif
	119
	120	ret->version = 1;
	121	ret->conv_form = POINT_CONVERSION_UNCOMPRESSED;
	122	ret->references = 1;
9b398ef2	123
91e7bcc2	124	if (ret->meth->init != NULL && ret->meth->init(ret) == 0) {
cb1d435c	125	ECerr(EC_F_EC_KEY_NEW_METHOD, ERR_R_INIT_FAIL);
0d6ff6d3 DSH	126	EC_KEY_free(ret);
	127	return NULL;
	128	}
	129	return ret;
28572b57	130	}
a22a7e70 DSH	131
a22a7e70 DSH	132	int ECDH_compute_key(void out, size_t outlen, const EC_POINT pub_key,
2c61a5ec	133	const EC_KEY *eckey,
a22a7e70 DSH	134	void (KDF) (const void in, size_t inlen, void out,
	135	size_t *outlen))
	136	{
e2285d87 DSH	137	unsigned char *sec = NULL;
	138	size_t seclen;
	139	if (eckey->meth->compute_key == NULL) {
	140	ECerr(EC_F_ECDH_COMPUTE_KEY, EC_R_OPERATION_NOT_SUPPORTED);
	141	return 0;
	142	}
	143	if (outlen > INT_MAX) {
	144	ECerr(EC_F_ECDH_COMPUTE_KEY, EC_R_INVALID_OUTPUT_LENGTH);
	145	return 0;
	146	}
	147	if (!eckey->meth->compute_key(&sec, &seclen, pub_key, eckey))
	148	return 0;
	149	if (KDF != NULL) {
	150	KDF(sec, seclen, out, &outlen);
	151	} else {
	152	if (outlen > seclen)
	153	outlen = seclen;
	154	memcpy(out, sec, outlen);
	155	}
	156	OPENSSL_clear_free(sec, seclen);
	157	return outlen;
a22a7e70	158	}
f8d7d2d6 DSH	159
	160	EC_KEY_METHOD EC_KEY_METHOD_new(const EC_KEY_METHOD meth)
	161	{
3aef36ff RS	162	EC_KEY_METHOD ret = OPENSSL_zalloc(sizeof(meth));
3aef36ff RS	163
f8d7d2d6 DSH	164	if (ret == NULL)
f8d7d2d6 DSH	165	return NULL;
91e7bcc2	166	if (meth != NULL)
f8d7d2d6 DSH	167	ret = meth;
	168	ret->flags \|= EC_KEY_METHOD_DYNAMIC;
	169	return ret;
	170	}
	171
	172	void EC_KEY_METHOD_free(EC_KEY_METHOD *meth)
	173	{
	174	if (meth->flags & EC_KEY_METHOD_DYNAMIC)
	175	OPENSSL_free(meth);
	176	}
	177
	178	void EC_KEY_METHOD_set_init(EC_KEY_METHOD *meth,
	179	int (init)(EC_KEY key),
	180	void (finish)(EC_KEY key),
	181	int (copy)(EC_KEY dest, const EC_KEY *src),
	182	int (set_group)(EC_KEY key, const EC_GROUP *grp),
	183	int (set_private)(EC_KEY key,
	184	const BIGNUM *priv_key),
	185	int (set_public)(EC_KEY key,
	186	const EC_POINT *pub_key))
	187	{
	188	meth->init = init;
	189	meth->finish = finish;
	190	meth->copy = copy;
	191	meth->set_group = set_group;
	192	meth->set_private = set_private;
	193	meth->set_public = set_public;
	194	}
	195
	196	void EC_KEY_METHOD_set_keygen(EC_KEY_METHOD *meth,
	197	int (keygen)(EC_KEY key))
	198	{
	199	meth->keygen = keygen;
	200	}
	201
	202	void EC_KEY_METHOD_set_compute_key(EC_KEY_METHOD *meth,
e2285d87 DSH	203	int (ckey)(unsigned char *psec,
e2285d87 DSH	204	size_t *pseclen,
f8d7d2d6	205	const EC_POINT *pub_key,
e2285d87	206	const EC_KEY *ecdh))
f8d7d2d6 DSH	207	{
	208	meth->compute_key = ckey;
	209	}
	210
	211	void EC_KEY_METHOD_set_sign(EC_KEY_METHOD *meth,
	212	int (sign)(int type, const unsigned char dgst,
	213	int dlen, unsigned char *sig,
	214	unsigned int *siglen,
	215	const BIGNUM kinv, const BIGNUM r,
	216	EC_KEY *eckey),
	217	int (sign_setup)(EC_KEY eckey, BN_CTX *ctx_in,
	218	BIGNUM kinvp, BIGNUM rp),
	219	ECDSA_SIG (sign_sig)(const unsigned char *dgst,
	220	int dgst_len,
	221	const BIGNUM *in_kinv,
	222	const BIGNUM *in_r,
	223	EC_KEY *eckey))
	224	{
	225	meth->sign = sign;
	226	meth->sign_setup = sign_setup;
	227	meth->sign_sig = sign_sig;
	228	}
	229
	230	void EC_KEY_METHOD_set_verify(EC_KEY_METHOD *meth,
	231	int (*verify)(int type, const unsigned
	232	char *dgst, int dgst_len,
	233	const unsigned char *sigbuf,
	234	int sig_len, EC_KEY *eckey),
	235	int (verify_sig)(const unsigned char dgst,
	236	int dgst_len,
	237	const ECDSA_SIG *sig,
	238	EC_KEY *eckey))
	239	{
	240	meth->verify = verify;
	241	meth->verify_sig = verify_sig;
	242	}
	243
	244	void EC_KEY_METHOD_get_init(EC_KEY_METHOD *meth,
	245	int (*pinit)(EC_KEY key),
	246	void (*pfinish)(EC_KEY key),
	247	int (*pcopy)(EC_KEY dest, const EC_KEY *src),
	248	int (*pset_group)(EC_KEY key,
	249	const EC_GROUP *grp),
	250	int (*pset_private)(EC_KEY key,
	251	const BIGNUM *priv_key),
	252	int (*pset_public)(EC_KEY key,
	253	const EC_POINT *pub_key))
	254	{
	255	if (pinit != NULL)
	256	*pinit = meth->init;
	257	if (pfinish != NULL)
	258	*pfinish = meth->finish;
	259	if (pcopy != NULL)
	260	*pcopy = meth->copy;
	261	if (pset_group != NULL)
	262	*pset_group = meth->set_group;
	263	if (pset_private != NULL)
	264	*pset_private = meth->set_private;
	265	if (pset_public != NULL)
	266	*pset_public = meth->set_public;
	267	}
	268
	269	void EC_KEY_METHOD_get_keygen(EC_KEY_METHOD *meth,
	270	int (*pkeygen)(EC_KEY key))
271	{
272	if (pkeygen != NULL)
273	*pkeygen = meth->keygen;
274	}
275
276	void EC_KEY_METHOD_get_compute_key(EC_KEY_METHOD *meth,
e2285d87 DSH	277	int (pck)(unsigned char pout,
e2285d87 DSH	278	size_t *poutlen,
f8d7d2d6	279	const EC_POINT *pub_key,
e2285d87	280	const EC_KEY *ecdh))
f8d7d2d6 DSH	281	{
	282	if (pck != NULL)
	283	*pck = meth->compute_key;
	284	}
	285
	286	void EC_KEY_METHOD_get_sign(EC_KEY_METHOD *meth,
	287	int (*psign)(int type, const unsigned char dgst,
	288	int dlen, unsigned char *sig,
	289	unsigned int *siglen,
	290	const BIGNUM kinv, const BIGNUM r,
	291	EC_KEY *eckey),
	292	int (*psign_setup)(EC_KEY eckey, BN_CTX *ctx_in,
	293	BIGNUM kinvp, BIGNUM rp),
	294	ECDSA_SIG (psign_sig)(const unsigned char dgst,
	295	int dgst_len,
	296	const BIGNUM *in_kinv,
	297	const BIGNUM *in_r,
	298	EC_KEY *eckey))
	299	{
	300	if (psign != NULL)
	301	*psign = meth->sign;
	302	if (psign_setup != NULL)
	303	*psign_setup = meth->sign_setup;
	304	if (psign_sig != NULL)
	305	*psign_sig = meth->sign_sig;
	306	}
	307
	308	void EC_KEY_METHOD_get_verify(EC_KEY_METHOD *meth,
	309	int (**pverify)(int type, const unsigned
	310	char *dgst, int dgst_len,
	311	const unsigned char *sigbuf,
	312	int sig_len, EC_KEY *eckey),
	313	int (*pverify_sig)(const unsigned char dgst,
	314	int dgst_len,
	315	const ECDSA_SIG *sig,
	316	EC_KEY *eckey))
	317	{
	318	if (pverify != NULL)
	319	*pverify = meth->verify;
	320	if (pverify_sig != NULL)
	321	*pverify_sig = meth->verify_sig;
	322	}