[thirdparty/openssl.git] / crypto / sm2 / sm2_pmeth.c

/*
 * Copyright 2006-2018 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 "internal/cryptlib.h"
#include <openssl/asn1t.h>
#include <openssl/ec.h>
#include <openssl/evp.h>
#include "internal/evp_int.h"
#include "internal/sm2.h"
#include "internal/sm2err.h"

/* EC pkey context structure */

typedef struct {
    /* Key and paramgen group */
    EC_GROUP *gen_group;
    /* message digest */
    const EVP_MD *md;
    /* Distinguishing Identifier, ISO/IEC 15946-3 */
    uint8_t *id;
    size_t id_len;
    /* id_set indicates if the 'id' field is set (1) or not (0) */
    int id_set;
} SM2_PKEY_CTX;

static int pkey_sm2_init(EVP_PKEY_CTX *ctx)
{
    SM2_PKEY_CTX *smctx;

    if ((smctx = OPENSSL_zalloc(sizeof(*smctx))) == NULL) {
        SM2err(SM2_F_PKEY_SM2_INIT, ERR_R_MALLOC_FAILURE);
        return 0;
    }

    ctx->data = smctx;
    return 1;
}

static void pkey_sm2_cleanup(EVP_PKEY_CTX *ctx)
{
    SM2_PKEY_CTX *smctx = ctx->data;

    if (smctx != NULL) {
        EC_GROUP_free(smctx->gen_group);
        OPENSSL_free(smctx->id);
        OPENSSL_free(smctx);
        ctx->data = NULL;
    }
}

static int pkey_sm2_copy(EVP_PKEY_CTX *dst, const EVP_PKEY_CTX *src)
{
    SM2_PKEY_CTX *dctx, *sctx;

    if (!pkey_sm2_init(dst))
        return 0;
    sctx = src->data;
    dctx = dst->data;
    if (sctx->gen_group != NULL) {
        dctx->gen_group = EC_GROUP_dup(sctx->gen_group);
        if (dctx->gen_group == NULL) {
            pkey_sm2_cleanup(dst);
            return 0;
        }
    }
    if (sctx->id != NULL) {
        dctx->id = OPENSSL_malloc(sctx->id_len);
        if (dctx->id == NULL) {
            SM2err(SM2_F_PKEY_SM2_COPY, ERR_R_MALLOC_FAILURE);
            pkey_sm2_cleanup(dst);
            return 0;
        }
        memcpy(dctx->id, sctx->id, sctx->id_len);
    }
    dctx->id_len = sctx->id_len;
    dctx->id_set = sctx->id_set;
    dctx->md = sctx->md;

    return 1;
}

static int pkey_sm2_sign(EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen,
                         const unsigned char *tbs, size_t tbslen)
{
    int ret;
    unsigned int sltmp;
    EC_KEY *ec = ctx->pkey->pkey.ec;
    const int sig_sz = ECDSA_size(ctx->pkey->pkey.ec);

    if (sig_sz <= 0) {
        return 0;
    }

    if (sig == NULL) {
        *siglen = (size_t)sig_sz;
        return 1;
    }

    if (*siglen < (size_t)sig_sz) {
        SM2err(SM2_F_PKEY_SM2_SIGN, SM2_R_BUFFER_TOO_SMALL);
        return 0;
    }

    ret = sm2_sign(tbs, tbslen, sig, &sltmp, ec);

    if (ret <= 0)
        return ret;
    *siglen = (size_t)sltmp;
    return 1;
}

static int pkey_sm2_verify(EVP_PKEY_CTX *ctx,
                           const unsigned char *sig, size_t siglen,
                           const unsigned char *tbs, size_t tbslen)
{
    EC_KEY *ec = ctx->pkey->pkey.ec;

    return sm2_verify(tbs, tbslen, sig, siglen, ec);
}

static int pkey_sm2_encrypt(EVP_PKEY_CTX *ctx,
                            unsigned char *out, size_t *outlen,
                            const unsigned char *in, size_t inlen)
{
    EC_KEY *ec = ctx->pkey->pkey.ec;
    SM2_PKEY_CTX *dctx = ctx->data;
    const EVP_MD *md = (dctx->md == NULL) ? EVP_sm3() : dctx->md;

    if (out == NULL) {
        if (!sm2_ciphertext_size(ec, md, inlen, outlen))
            return -1;
        else
            return 1;
    }

    return sm2_encrypt(ec, md, in, inlen, out, outlen);
}

static int pkey_sm2_decrypt(EVP_PKEY_CTX *ctx,
                            unsigned char *out, size_t *outlen,
                            const unsigned char *in, size_t inlen)
{
    EC_KEY *ec = ctx->pkey->pkey.ec;
    SM2_PKEY_CTX *dctx = ctx->data;
    const EVP_MD *md = (dctx->md == NULL) ? EVP_sm3() : dctx->md;

    if (out == NULL) {
        if (!sm2_plaintext_size(ec, md, inlen, outlen))
            return -1;
        else
            return 1;
    }

    return sm2_decrypt(ec, md, in, inlen, out, outlen);
}

static int pkey_sm2_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2)
{
    SM2_PKEY_CTX *smctx = ctx->data;
    EC_GROUP *group;
    uint8_t *tmp_id;

    switch (type) {
    case EVP_PKEY_CTRL_EC_PARAMGEN_CURVE_NID:
        group = EC_GROUP_new_by_curve_name(p1);
        if (group == NULL) {
            SM2err(SM2_F_PKEY_SM2_CTRL, SM2_R_INVALID_CURVE);
            return 0;
        }
        EC_GROUP_free(smctx->gen_group);
        smctx->gen_group = group;
        return 1;

    case EVP_PKEY_CTRL_EC_PARAM_ENC:
        if (smctx->gen_group == NULL) {
            SM2err(SM2_F_PKEY_SM2_CTRL, SM2_R_NO_PARAMETERS_SET);
            return 0;
        }
        EC_GROUP_set_asn1_flag(smctx->gen_group, p1);
        return 1;

    case EVP_PKEY_CTRL_MD:
        smctx->md = p2;
        return 1;

    case EVP_PKEY_CTRL_GET_MD:
        *(const EVP_MD **)p2 = smctx->md;
        return 1;

    case EVP_PKEY_CTRL_SET1_ID:
        if (p1 > 0) {
            tmp_id = OPENSSL_malloc(p1);
            if (tmp_id == NULL) {
                SM2err(SM2_F_PKEY_SM2_CTRL, ERR_R_MALLOC_FAILURE);
                return 0;
            }
            memcpy(tmp_id, p2, p1);
            OPENSSL_free(smctx->id);
            smctx->id = tmp_id;
        } else {
            /* set null-ID */
            OPENSSL_free(smctx->id);
            smctx->id = NULL;
        }
        smctx->id_len = (size_t)p1;
        smctx->id_set = 1;
        return 1;

    case EVP_PKEY_CTRL_GET1_ID:
        memcpy(p2, smctx->id, smctx->id_len);
        return 1;

    case EVP_PKEY_CTRL_GET1_ID_LEN:
        *(size_t *)p2 = smctx->id_len;
        return 1;

    case EVP_PKEY_CTRL_DIGESTINIT:
        /* nothing to be inited, this is to suppress the error... */
        return 1;

    default:
        return -2;
    }
}

static int pkey_sm2_ctrl_str(EVP_PKEY_CTX *ctx,
                             const char *type, const char *value)
{
    uint8_t *hex_id;
    long hex_len = 0;
    int ret = 0;

    if (strcmp(type, "ec_paramgen_curve") == 0) {
        int nid = NID_undef;

        if (((nid = EC_curve_nist2nid(value)) == NID_undef)
            && ((nid = OBJ_sn2nid(value)) == NID_undef)
            && ((nid = OBJ_ln2nid(value)) == NID_undef)) {
            SM2err(SM2_F_PKEY_SM2_CTRL_STR, SM2_R_INVALID_CURVE);
            return 0;
        }
        return EVP_PKEY_CTX_set_ec_paramgen_curve_nid(ctx, nid);
    } else if (strcmp(type, "ec_param_enc") == 0) {
        int param_enc;

        if (strcmp(value, "explicit") == 0)
            param_enc = 0;
        else if (strcmp(value, "named_curve") == 0)
            param_enc = OPENSSL_EC_NAMED_CURVE;
        else
            return -2;
        return EVP_PKEY_CTX_set_ec_param_enc(ctx, param_enc);
    } else if (strcmp(type, "sm2_id") == 0) {
        return pkey_sm2_ctrl(ctx, EVP_PKEY_CTRL_SET1_ID,
                             (int)strlen(value), (void *)value);
    } else if (strcmp(type, "sm2_hex_id") == 0) {
        /*
         * TODO(3.0): reconsider the name "sm2_hex_id", OR change
         * OSSL_PARAM_construct_from_text() / OSSL_PARAM_allocate_from_text()
         * to handle infix "_hex_"
         */
        hex_id = OPENSSL_hexstr2buf((const char *)value, &hex_len);
        if (hex_id == NULL) {
            SM2err(SM2_F_PKEY_SM2_CTRL_STR, ERR_R_PASSED_INVALID_ARGUMENT);
            return 0;
        }
        ret = pkey_sm2_ctrl(ctx, EVP_PKEY_CTRL_SET1_ID, (int)hex_len,
                            (void *)hex_id);
        OPENSSL_free(hex_id);
        return ret;
    }

    return -2;
}

static int pkey_sm2_digest_custom(EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx)
{
    uint8_t z[EVP_MAX_MD_SIZE];
    SM2_PKEY_CTX *smctx = ctx->data;
    EC_KEY *ec = ctx->pkey->pkey.ec;
    const EVP_MD *md = EVP_MD_CTX_md(mctx);
    int mdlen = EVP_MD_size(md);

    if (!smctx->id_set) {
        /*
         * An ID value must be set. The specifications are not clear whether a
         * NULL is allowed. We only allow it if set explicitly for maximum
         * flexibility.
         */
        SM2err(SM2_F_PKEY_SM2_DIGEST_CUSTOM, SM2_R_ID_NOT_SET);
        return 0;
    }

    if (mdlen < 0) {
        SM2err(SM2_F_PKEY_SM2_DIGEST_CUSTOM, SM2_R_INVALID_DIGEST);
        return 0;
    }

    /* get hashed prefix 'z' of tbs message */
    if (!sm2_compute_z_digest(z, md, smctx->id, smctx->id_len, ec))
        return 0;

    return EVP_DigestUpdate(mctx, z, (size_t)mdlen);
}

const EVP_PKEY_METHOD sm2_pkey_meth = {
    EVP_PKEY_SM2,
    0,
    pkey_sm2_init,
    pkey_sm2_copy,
    pkey_sm2_cleanup,

    0,
    0,

    0,
    0,

    0,
    pkey_sm2_sign,

    0,
    pkey_sm2_verify,

    0, 0,

    0, 0, 0, 0,

    0,
    pkey_sm2_encrypt,

    0,
    pkey_sm2_decrypt,

    0,
    0,
    pkey_sm2_ctrl,
    pkey_sm2_ctrl_str,

    0, 0,

    0, 0, 0,

    pkey_sm2_digest_custom
};
Commit	Line	Data
ddb634fe JL	1	/*
	2	* Copyright 2006-2018 The OpenSSL Project Authors. All Rights Reserved.
	3	*
f9f859ad	4	* Licensed under the Apache License 2.0 (the "License"). You may not use
ddb634fe JL	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 "internal/cryptlib.h"
	11	#include <openssl/asn1t.h>
	12	#include <openssl/ec.h>
	13	#include <openssl/evp.h>
	14	#include "internal/evp_int.h"
	15	#include "internal/sm2.h"
	16	#include "internal/sm2err.h"
	17
	18	/* EC pkey context structure */
	19
	20	typedef struct {
	21	/* Key and paramgen group */
	22	EC_GROUP *gen_group;
	23	/* message digest */
	24	const EVP_MD *md;
4803717f	25	/* Distinguishing Identifier, ISO/IEC 15946-3 */
00433bad PY	26	uint8_t *id;
00433bad PY	27	size_t id_len;
4803717f PY	28	/* id_set indicates if the 'id' field is set (1) or not (0) */
4803717f PY	29	int id_set;
ddb634fe JL	30	} SM2_PKEY_CTX;
	31
	32	static int pkey_sm2_init(EVP_PKEY_CTX *ctx)
	33	{
4803717f	34	SM2_PKEY_CTX *smctx;
ddb634fe	35
4803717f	36	if ((smctx = OPENSSL_zalloc(sizeof(*smctx))) == NULL) {
ddb634fe JL	37	SM2err(SM2_F_PKEY_SM2_INIT, ERR_R_MALLOC_FAILURE);
	38	return 0;
	39	}
	40
4803717f	41	ctx->data = smctx;
ddb634fe JL	42	return 1;
	43	}
	44
	45	static void pkey_sm2_cleanup(EVP_PKEY_CTX *ctx)
	46	{
4803717f	47	SM2_PKEY_CTX *smctx = ctx->data;
ddb634fe	48
4803717f PY	49	if (smctx != NULL) {
	50	EC_GROUP_free(smctx->gen_group);
	51	OPENSSL_free(smctx->id);
	52	OPENSSL_free(smctx);
ddb634fe JL	53	ctx->data = NULL;
	54	}
	55	}
	56
9fdcc21f	57	static int pkey_sm2_copy(EVP_PKEY_CTX dst, const EVP_PKEY_CTX src)
ddb634fe JL	58	{
	59	SM2_PKEY_CTX dctx, sctx;
	60
	61	if (!pkey_sm2_init(dst))
	62	return 0;
	63	sctx = src->data;
	64	dctx = dst->data;
	65	if (sctx->gen_group != NULL) {
	66	dctx->gen_group = EC_GROUP_dup(sctx->gen_group);
	67	if (dctx->gen_group == NULL) {
	68	pkey_sm2_cleanup(dst);
	69	return 0;
	70	}
	71	}
4803717f PY	72	if (sctx->id != NULL) {
	73	dctx->id = OPENSSL_malloc(sctx->id_len);
	74	if (dctx->id == NULL) {
f922dac8	75	SM2err(SM2_F_PKEY_SM2_COPY, ERR_R_MALLOC_FAILURE);
4803717f PY	76	pkey_sm2_cleanup(dst);
	77	return 0;
	78	}
	79	memcpy(dctx->id, sctx->id, sctx->id_len);
	80	}
	81	dctx->id_len = sctx->id_len;
	82	dctx->id_set = sctx->id_set;
ddb634fe JL	83	dctx->md = sctx->md;
	84
	85	return 1;
	86	}
	87
	88	static int pkey_sm2_sign(EVP_PKEY_CTX ctx, unsigned char sig, size_t *siglen,
	89	const unsigned char *tbs, size_t tbslen)
	90	{
	91	int ret;
	92	unsigned int sltmp;
	93	EC_KEY *ec = ctx->pkey->pkey.ec;
	94	const int sig_sz = ECDSA_size(ctx->pkey->pkey.ec);
	95
	96	if (sig_sz <= 0) {
	97	return 0;
	98	}
	99
	100	if (sig == NULL) {
	101	*siglen = (size_t)sig_sz;
	102	return 1;
	103	}
	104
	105	if (*siglen < (size_t)sig_sz) {
	106	SM2err(SM2_F_PKEY_SM2_SIGN, SM2_R_BUFFER_TOO_SMALL);
	107	return 0;
	108	}
	109
	110	ret = sm2_sign(tbs, tbslen, sig, &sltmp, ec);
	111
	112	if (ret <= 0)
	113	return ret;
	114	*siglen = (size_t)sltmp;
	115	return 1;
	116	}
	117
	118	static int pkey_sm2_verify(EVP_PKEY_CTX *ctx,
	119	const unsigned char *sig, size_t siglen,
	120	const unsigned char *tbs, size_t tbslen)
	121	{
	122	EC_KEY *ec = ctx->pkey->pkey.ec;
	123
	124	return sm2_verify(tbs, tbslen, sig, siglen, ec);
	125	}
	126
	127	static int pkey_sm2_encrypt(EVP_PKEY_CTX *ctx,
	128	unsigned char out, size_t outlen,
	129	const unsigned char *in, size_t inlen)
	130	{
	131	EC_KEY *ec = ctx->pkey->pkey.ec;
	132	SM2_PKEY_CTX *dctx = ctx->data;
	133	const EVP_MD *md = (dctx->md == NULL) ? EVP_sm3() : dctx->md;
	134
	135	if (out == NULL) {
	136	if (!sm2_ciphertext_size(ec, md, inlen, outlen))
	137	return -1;
	138	else
	139	return 1;
	140	}
	141
	142	return sm2_encrypt(ec, md, in, inlen, out, outlen);
	143	}
	144
	145	static int pkey_sm2_decrypt(EVP_PKEY_CTX *ctx,
	146	unsigned char out, size_t outlen,
147	const unsigned char *in, size_t inlen)
148	{
149	EC_KEY *ec = ctx->pkey->pkey.ec;
150	SM2_PKEY_CTX *dctx = ctx->data;
151	const EVP_MD *md = (dctx->md == NULL) ? EVP_sm3() : dctx->md;
152
153	if (out == NULL) {
154	if (!sm2_plaintext_size(ec, md, inlen, outlen))
155	return -1;
156	else
157	return 1;
158	}
159
160	return sm2_decrypt(ec, md, in, inlen, out, outlen);
161	}
162
163	static int pkey_sm2_ctrl(EVP_PKEY_CTX ctx, int type, int p1, void p2)
164	{
4803717f	165	SM2_PKEY_CTX *smctx = ctx->data;
ddb634fe	166	EC_GROUP *group;
675f4cee	167	uint8_t *tmp_id;
ddb634fe JL	168
	169	switch (type) {
	170	case EVP_PKEY_CTRL_EC_PARAMGEN_CURVE_NID:
	171	group = EC_GROUP_new_by_curve_name(p1);
	172	if (group == NULL) {
	173	SM2err(SM2_F_PKEY_SM2_CTRL, SM2_R_INVALID_CURVE);
	174	return 0;
	175	}
4803717f PY	176	EC_GROUP_free(smctx->gen_group);
4803717f PY	177	smctx->gen_group = group;
ddb634fe JL	178	return 1;
	179
	180	case EVP_PKEY_CTRL_EC_PARAM_ENC:
4803717f	181	if (smctx->gen_group == NULL) {
ddb634fe JL	182	SM2err(SM2_F_PKEY_SM2_CTRL, SM2_R_NO_PARAMETERS_SET);
	183	return 0;
	184	}
4803717f	185	EC_GROUP_set_asn1_flag(smctx->gen_group, p1);
ddb634fe JL	186	return 1;
	187
	188	case EVP_PKEY_CTRL_MD:
4803717f	189	smctx->md = p2;
ddb634fe JL	190	return 1;
	191
	192	case EVP_PKEY_CTRL_GET_MD:
4803717f PY	193	(const EVP_MD *)p2 = smctx->md;
	194	return 1;
	195
	196	case EVP_PKEY_CTRL_SET1_ID:
4803717f	197	if (p1 > 0) {
675f4cee	198	tmp_id = OPENSSL_malloc(p1);
f922dac8 PY	199	if (tmp_id == NULL) {
f922dac8 PY	200	SM2err(SM2_F_PKEY_SM2_CTRL, ERR_R_MALLOC_FAILURE);
4803717f	201	return 0;
f922dac8	202	}
675f4cee PY	203	memcpy(tmp_id, p2, p1);
	204	OPENSSL_free(smctx->id);
	205	smctx->id = tmp_id;
4803717f PY	206	} else {
4803717f PY	207	/* set null-ID */
675f4cee	208	OPENSSL_free(smctx->id);
4803717f PY	209	smctx->id = NULL;
	210	}
	211	smctx->id_len = (size_t)p1;
	212	smctx->id_set = 1;
	213	return 1;
	214
	215	case EVP_PKEY_CTRL_GET1_ID:
	216	memcpy(p2, smctx->id, smctx->id_len);
	217	return 1;
	218
	219	case EVP_PKEY_CTRL_GET1_ID_LEN:
	220	(size_t )p2 = smctx->id_len;
ddb634fe JL	221	return 1;
ddb634fe JL	222
8267becb	223	case EVP_PKEY_CTRL_DIGESTINIT:
	224	/* nothing to be inited, this is to suppress the error... */
	225	return 1;
	226
ddb634fe JL	227	default:
ddb634fe JL	228	return -2;
ddb634fe JL	229	}
	230	}
	231
	232	static int pkey_sm2_ctrl_str(EVP_PKEY_CTX *ctx,
	233	const char type, const char value)
	234	{
a45eb7e8 PY	235	uint8_t *hex_id;
	236	long hex_len = 0;
	237	int ret = 0;
	238
ddb634fe JL	239	if (strcmp(type, "ec_paramgen_curve") == 0) {
	240	int nid = NID_undef;
	241
	242	if (((nid = EC_curve_nist2nid(value)) == NID_undef)
	243	&& ((nid = OBJ_sn2nid(value)) == NID_undef)
	244	&& ((nid = OBJ_ln2nid(value)) == NID_undef)) {
	245	SM2err(SM2_F_PKEY_SM2_CTRL_STR, SM2_R_INVALID_CURVE);
	246	return 0;
	247	}
	248	return EVP_PKEY_CTX_set_ec_paramgen_curve_nid(ctx, nid);
	249	} else if (strcmp(type, "ec_param_enc") == 0) {
	250	int param_enc;
	251
	252	if (strcmp(value, "explicit") == 0)
	253	param_enc = 0;
	254	else if (strcmp(value, "named_curve") == 0)
	255	param_enc = OPENSSL_EC_NAMED_CURVE;
	256	else
	257	return -2;
	258	return EVP_PKEY_CTX_set_ec_param_enc(ctx, param_enc);
a7cef52f PY	259	} else if (strcmp(type, "sm2_id") == 0) {
	260	return pkey_sm2_ctrl(ctx, EVP_PKEY_CTRL_SET1_ID,
	261	(int)strlen(value), (void *)value);
a45eb7e8 PY	262	} else if (strcmp(type, "sm2_hex_id") == 0) {
	263	/*
	264	* TODO(3.0): reconsider the name "sm2_hex_id", OR change
	265	* OSSL_PARAM_construct_from_text() / OSSL_PARAM_allocate_from_text()
	266	* to handle infix "_hex_"
	267	*/
	268	hex_id = OPENSSL_hexstr2buf((const char *)value, &hex_len);
	269	if (hex_id == NULL) {
	270	SM2err(SM2_F_PKEY_SM2_CTRL_STR, ERR_R_PASSED_INVALID_ARGUMENT);
	271	return 0;
	272	}
	273	ret = pkey_sm2_ctrl(ctx, EVP_PKEY_CTRL_SET1_ID, (int)hex_len,
	274	(void *)hex_id);
	275	OPENSSL_free(hex_id);
	276	return ret;
ddb634fe JL	277	}
	278
	279	return -2;
	280	}
	281
00433bad PY	282	static int pkey_sm2_digest_custom(EVP_PKEY_CTX ctx, EVP_MD_CTX mctx)
	283	{
	284	uint8_t z[EVP_MAX_MD_SIZE];
4803717f	285	SM2_PKEY_CTX *smctx = ctx->data;
00433bad PY	286	EC_KEY *ec = ctx->pkey->pkey.ec;
00433bad PY	287	const EVP_MD *md = EVP_MD_CTX_md(mctx);
d689f313	288	int mdlen = EVP_MD_size(md);
00433bad	289
4803717f PY	290	if (!smctx->id_set) {
	291	/*
	292	* An ID value must be set. The specifications are not clear whether a
	293	* NULL is allowed. We only allow it if set explicitly for maximum
	294	* flexibility.
00433bad	295	*/
675f4cee	296	SM2err(SM2_F_PKEY_SM2_DIGEST_CUSTOM, SM2_R_ID_NOT_SET);
00433bad PY	297	return 0;
	298	}
	299
d689f313 MC	300	if (mdlen < 0) {
	301	SM2err(SM2_F_PKEY_SM2_DIGEST_CUSTOM, SM2_R_INVALID_DIGEST);
	302	return 0;
	303	}
	304
4803717f PY	305	/* get hashed prefix 'z' of tbs message */
4803717f PY	306	if (!sm2_compute_z_digest(z, md, smctx->id, smctx->id_len, ec))
00433bad PY	307	return 0;
00433bad PY	308
d689f313	309	return EVP_DigestUpdate(mctx, z, (size_t)mdlen);
00433bad PY	310	}
00433bad PY	311
ddb634fe JL	312	const EVP_PKEY_METHOD sm2_pkey_meth = {
	313	EVP_PKEY_SM2,
	314	0,
	315	pkey_sm2_init,
	316	pkey_sm2_copy,
	317	pkey_sm2_cleanup,
	318
	319	0,
	320	0,
	321
	322	0,
	323	0,
	324
	325	0,
	326	pkey_sm2_sign,
	327
	328	0,
	329	pkey_sm2_verify,
	330
	331	0, 0,
	332
	333	0, 0, 0, 0,
	334
	335	0,
	336	pkey_sm2_encrypt,
	337
	338	0,
	339	pkey_sm2_decrypt,
	340
	341	0,
	342	0,
	343	pkey_sm2_ctrl,
00433bad PY	344	pkey_sm2_ctrl_str,
	345
	346	0, 0,
	347
	348	0, 0, 0,
	349
	350	pkey_sm2_digest_custom
ddb634fe	351	};