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Hakase
2018-06-05 08:17:23 +09:00
parent f03e5e0d15
commit 5aee3a55b9
17 changed files with 859 additions and 1059 deletions
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crypto/sm2/sm2_crypt.c
+157 -109
View File
@@ -9,7 +9,9 @@
* https://www.openssl.org/source/license.html
*/
#include <openssl/sm2.h>
#include "internal/sm2.h"
#include "internal/sm2err.h"
#include <openssl/err.h>
#include <openssl/evp.h>
#include <openssl/bn.h>
#include <openssl/asn1.h>
@@ -35,7 +37,7 @@ ASN1_SEQUENCE(SM2_Ciphertext) = {
IMPLEMENT_ASN1_FUNCTIONS(SM2_Ciphertext)
static size_t EC_field_size(const EC_GROUP *group)
static size_t ec_field_size(const EC_GROUP *group)
{
/* Is there some simpler way to do this? */
BIGNUM *p = BN_new();
@@ -57,31 +59,51 @@ static size_t EC_field_size(const EC_GROUP *group)
return field_size;
}
size_t SM2_plaintext_size(const EC_KEY *key, const EVP_MD *digest, size_t msg_len)
int sm2_plaintext_size(const EC_KEY *key, const EVP_MD *digest, size_t msg_len,
size_t *pt_size)
{
const size_t field_size = EC_field_size(EC_KEY_get0_group(key));
const size_t md_size = EVP_MD_size(digest);
const size_t field_size = ec_field_size(EC_KEY_get0_group(key));
const int md_size = EVP_MD_size(digest);
size_t overhead;
const size_t overhead = 10 + 2 * field_size + md_size;
if(msg_len <= overhead)
return 0;
if (md_size < 0) {
SM2err(SM2_F_SM2_PLAINTEXT_SIZE, SM2_R_INVALID_DIGEST);
return 0;
}
if (field_size == 0) {
SM2err(SM2_F_SM2_PLAINTEXT_SIZE, SM2_R_INVALID_FIELD);
return 0;
}
return msg_len - overhead;
overhead = 10 + 2 * field_size + (size_t)md_size;
if (msg_len <= overhead) {
SM2err(SM2_F_SM2_PLAINTEXT_SIZE, SM2_R_INVALID_ENCODING);
return 0;
}
*pt_size = msg_len - overhead;
return 1;
}
size_t SM2_ciphertext_size(const EC_KEY *key, const EVP_MD *digest, size_t msg_len)
int sm2_ciphertext_size(const EC_KEY *key, const EVP_MD *digest, size_t msg_len,
size_t *ct_size)
{
const size_t field_size = EC_field_size(EC_KEY_get0_group(key));
const size_t md_size = EVP_MD_size(digest);
return 10 + 2 * field_size + md_size + msg_len;
const size_t field_size = ec_field_size(EC_KEY_get0_group(key));
const int md_size = EVP_MD_size(digest);
if (field_size == 0 || md_size < 0)
return 0;
*ct_size = 10 + 2 * field_size + (size_t)md_size + msg_len;
return 1;
}
int SM2_encrypt(const EC_KEY *key,
int sm2_encrypt(const EC_KEY *key,
const EVP_MD *digest,
const uint8_t *msg,
size_t msg_len, uint8_t *ciphertext_buf, size_t *ciphertext_len)
{
int rc = 0;
int rc = 0, ciphertext_leni;
size_t i;
BN_CTX *ctx = NULL;
BIGNUM *k = NULL;
@@ -89,9 +111,7 @@ int SM2_encrypt(const EC_KEY *key,
BIGNUM *y1 = NULL;
BIGNUM *x2 = NULL;
BIGNUM *y2 = NULL;
EVP_MD_CTX *hash = EVP_MD_CTX_new();
struct SM2_Ciphertext_st ctext_struct;
const EC_GROUP *group = EC_KEY_get0_group(key);
const BIGNUM *order = EC_GROUP_get0_order(group);
@@ -99,24 +119,32 @@ int SM2_encrypt(const EC_KEY *key,
EC_POINT *kG = NULL;
EC_POINT *kP = NULL;
uint8_t *msg_mask = NULL;
uint8_t *x2y2 = NULL;
uint8_t *C3 = NULL;
const size_t field_size = EC_field_size(group);
const size_t field_size = ec_field_size(group);
const size_t C3_size = EVP_MD_size(digest);
if (field_size == 0 || C3_size == 0)
goto done;
/* NULL these before any "goto done" */
ctext_struct.C2 = NULL;
ctext_struct.C3 = NULL;
if (hash == NULL
|| group == NULL
|| order == NULL
|| P == NULL
|| field_size == 0
|| C3_size == 0) {
SM2err(SM2_F_SM2_ENCRYPT, ERR_R_INTERNAL_ERROR);
goto done;
}
kG = EC_POINT_new(group);
kP = EC_POINT_new(group);
if (kG == NULL || kP == NULL)
goto done;
ctx = BN_CTX_new();
if (ctx == NULL)
goto done;
if (kG == NULL || kP == NULL || ctx == NULL) {
SM2err(SM2_F_SM2_ENCRYPT, ERR_R_MALLOC_FAILURE);
goto done;
}
BN_CTX_start(ctx);
k = BN_CTX_get(ctx);
@@ -125,76 +153,93 @@ int SM2_encrypt(const EC_KEY *key,
y1 = BN_CTX_get(ctx);
y2 = BN_CTX_get(ctx);
if (y2 == NULL)
goto done;
if (y2 == NULL) {
SM2err(SM2_F_SM2_ENCRYPT, ERR_R_BN_LIB);
goto done;
}
x2y2 = OPENSSL_zalloc(2 * field_size);
C3 = OPENSSL_zalloc(C3_size);
if (x2y2 == NULL || C3 == NULL)
goto done;
if (x2y2 == NULL || C3 == NULL) {
SM2err(SM2_F_SM2_ENCRYPT, ERR_R_MALLOC_FAILURE);
goto done;
}
memset(ciphertext_buf, 0, *ciphertext_len);
BN_priv_rand_range(k, order);
if (EC_POINT_mul(group, kG, k, NULL, NULL, ctx) == 0)
if (!BN_priv_rand_range(k, order)) {
SM2err(SM2_F_SM2_ENCRYPT, ERR_R_INTERNAL_ERROR);
goto done;
}
if (EC_POINT_get_affine_coordinates_GFp(group, kG, x1, y1, ctx) == 0)
if (!EC_POINT_mul(group, kG, k, NULL, NULL, ctx)
|| !EC_POINT_get_affine_coordinates_GFp(group, kG, x1, y1, ctx)
|| !EC_POINT_mul(group, kP, NULL, P, k, ctx)
|| !EC_POINT_get_affine_coordinates_GFp(group, kP, x2, y2, ctx)) {
SM2err(SM2_F_SM2_ENCRYPT, ERR_R_EC_LIB);
goto done;
}
if (EC_POINT_mul(group, kP, NULL, P, k, ctx) == 0)
if (BN_bn2binpad(x2, x2y2, field_size) < 0
|| BN_bn2binpad(y2, x2y2 + field_size, field_size) < 0) {
SM2err(SM2_F_SM2_ENCRYPT, ERR_R_INTERNAL_ERROR);
goto done;
if (EC_POINT_get_affine_coordinates_GFp(group, kP, x2, y2, ctx) == 0)
goto done;
BN_bn2binpad(x2, x2y2, field_size);
BN_bn2binpad(y2, x2y2 + field_size, field_size);
}
msg_mask = OPENSSL_zalloc(msg_len);
if (msg_mask == NULL)
if (msg_mask == NULL) {
SM2err(SM2_F_SM2_ENCRYPT, ERR_R_MALLOC_FAILURE);
goto done;
}
/* X9.63 with no salt happens to match the KDF used in SM2 */
if (ECDH_KDF_X9_62(msg_mask, msg_len, x2y2, 2 * field_size, NULL, 0, digest)
== 0)
if (!ECDH_KDF_X9_62(msg_mask, msg_len, x2y2, 2 * field_size, NULL, 0,
digest)) {
SM2err(SM2_F_SM2_ENCRYPT, ERR_R_EVP_LIB);
goto done;
}
for (i = 0; i != msg_len; ++i)
msg_mask[i] ^= msg[i];
if (EVP_DigestInit(hash, digest) == 0)
goto done;
if (EVP_DigestUpdate(hash, x2y2, field_size) == 0)
goto done;
if (EVP_DigestUpdate(hash, msg, msg_len) == 0)
goto done;
if (EVP_DigestUpdate(hash, x2y2 + field_size, field_size) == 0)
goto done;
if (EVP_DigestFinal(hash, C3, NULL) == 0)
if (EVP_DigestInit(hash, digest) == 0
|| EVP_DigestUpdate(hash, x2y2, field_size) == 0
|| EVP_DigestUpdate(hash, msg, msg_len) == 0
|| EVP_DigestUpdate(hash, x2y2 + field_size, field_size) == 0
|| EVP_DigestFinal(hash, C3, NULL) == 0) {
SM2err(SM2_F_SM2_ENCRYPT, ERR_R_EVP_LIB);
goto done;
}
ctext_struct.C1x = x1;
ctext_struct.C1y = y1;
ctext_struct.C3 = ASN1_OCTET_STRING_new();
ASN1_OCTET_STRING_set(ctext_struct.C3, C3, C3_size);
ctext_struct.C2 = ASN1_OCTET_STRING_new();
ASN1_OCTET_STRING_set(ctext_struct.C2, msg_mask, msg_len);
*ciphertext_len = i2d_SM2_Ciphertext(&ctext_struct, &ciphertext_buf);
if (ctext_struct.C3 == NULL || ctext_struct.C2 == NULL) {
SM2err(SM2_F_SM2_ENCRYPT, ERR_R_MALLOC_FAILURE);
goto done;
}
if (!ASN1_OCTET_STRING_set(ctext_struct.C3, C3, C3_size)
|| !ASN1_OCTET_STRING_set(ctext_struct.C2, msg_mask, msg_len)) {
SM2err(SM2_F_SM2_ENCRYPT, ERR_R_INTERNAL_ERROR);
goto done;
}
ASN1_OCTET_STRING_free(ctext_struct.C2);
ASN1_OCTET_STRING_free(ctext_struct.C3);
ciphertext_leni = i2d_SM2_Ciphertext(&ctext_struct, &ciphertext_buf);
/* Ensure cast to size_t is safe */
if (ciphertext_leni < 0) {
SM2err(SM2_F_SM2_ENCRYPT, ERR_R_INTERNAL_ERROR);
goto done;
}
*ciphertext_len = (size_t)ciphertext_leni;
rc = 1;
done:
ASN1_OCTET_STRING_free(ctext_struct.C2);
ASN1_OCTET_STRING_free(ctext_struct.C3);
OPENSSL_free(msg_mask);
OPENSSL_free(x2y2);
OPENSSL_free(C3);
@@ -205,27 +250,23 @@ int SM2_encrypt(const EC_KEY *key,
return rc;
}
int SM2_decrypt(const EC_KEY *key,
int sm2_decrypt(const EC_KEY *key,
const EVP_MD *digest,
const uint8_t *ciphertext,
size_t ciphertext_len, uint8_t *ptext_buf, size_t *ptext_len)
{
int rc = 0;
int i;
BN_CTX *ctx = NULL;
const EC_GROUP *group = EC_KEY_get0_group(key);
EC_POINT *C1 = NULL;
struct SM2_Ciphertext_st *sm2_ctext = NULL;
BIGNUM *x2 = NULL;
BIGNUM *y2 = NULL;
uint8_t *x2y2 = NULL;
uint8_t *computed_C3 = NULL;
const size_t field_size = EC_field_size(group);
const size_t field_size = ec_field_size(group);
const int hash_size = EVP_MD_size(digest);
uint8_t *msg_mask = NULL;
const uint8_t *C2 = NULL;
const uint8_t *C3 = NULL;
@@ -239,87 +280,94 @@ int SM2_decrypt(const EC_KEY *key,
sm2_ctext = d2i_SM2_Ciphertext(NULL, &ciphertext, ciphertext_len);
if (sm2_ctext == NULL)
if (sm2_ctext == NULL) {
SM2err(SM2_F_SM2_DECRYPT, SM2_R_ASN1_ERROR);
goto done;
}
if (sm2_ctext->C3->length != hash_size)
if (sm2_ctext->C3->length != hash_size) {
SM2err(SM2_F_SM2_DECRYPT, SM2_R_INVALID_ENCODING);
goto done;
}
C2 = sm2_ctext->C2->data;
C3 = sm2_ctext->C3->data;
msg_len = sm2_ctext->C2->length;
ctx = BN_CTX_new();
if (ctx == NULL)
goto done;
if (ctx == NULL) {
SM2err(SM2_F_SM2_DECRYPT, ERR_R_MALLOC_FAILURE);
goto done;
}
BN_CTX_start(ctx);
x2 = BN_CTX_get(ctx);
y2 = BN_CTX_get(ctx);
if(y2 == NULL)
goto done;
if (y2 == NULL) {
SM2err(SM2_F_SM2_DECRYPT, ERR_R_BN_LIB);
goto done;
}
msg_mask = OPENSSL_zalloc(msg_len);
x2y2 = OPENSSL_zalloc(2 * field_size);
computed_C3 = OPENSSL_zalloc(hash_size);
if(msg_mask == NULL || x2y2 == NULL || computed_C3 == NULL)
goto done;
if (msg_mask == NULL || x2y2 == NULL || computed_C3 == NULL) {
SM2err(SM2_F_SM2_DECRYPT, ERR_R_MALLOC_FAILURE);
goto done;
}
C1 = EC_POINT_new(group);
if (C1 == NULL)
if (C1 == NULL) {
SM2err(SM2_F_SM2_DECRYPT, ERR_R_MALLOC_FAILURE);
goto done;
}
if (EC_POINT_set_affine_coordinates_GFp
(group, C1, sm2_ctext->C1x, sm2_ctext->C1y, ctx) == 0)
if (!EC_POINT_set_affine_coordinates_GFp(group, C1, sm2_ctext->C1x,
sm2_ctext->C1y, ctx)
|| !EC_POINT_mul(group, C1, NULL, C1, EC_KEY_get0_private_key(key),
ctx)
|| !EC_POINT_get_affine_coordinates_GFp(group, C1, x2, y2, ctx)) {
SM2err(SM2_F_SM2_DECRYPT, ERR_R_EC_LIB);
goto done;
}
if (EC_POINT_mul(group, C1, NULL, C1, EC_KEY_get0_private_key(key), ctx) ==
0)
goto done;
if (EC_POINT_get_affine_coordinates_GFp(group, C1, x2, y2, ctx) == 0)
goto done;
BN_bn2binpad(x2, x2y2, field_size);
BN_bn2binpad(y2, x2y2 + field_size, field_size);
if (ECDH_KDF_X9_62(msg_mask, msg_len, x2y2, 2 * field_size, NULL, 0, digest)
== 0)
if (BN_bn2binpad(x2, x2y2, field_size) < 0
|| BN_bn2binpad(y2, x2y2 + field_size, field_size) < 0
|| !ECDH_KDF_X9_62(msg_mask, msg_len, x2y2, 2 * field_size, NULL, 0,
digest)) {
SM2err(SM2_F_SM2_DECRYPT, ERR_R_INTERNAL_ERROR);
goto done;
}
for (i = 0; i != msg_len; ++i)
ptext_buf[i] = C2[i] ^ msg_mask[i];
hash = EVP_MD_CTX_new();
if (hash == NULL)
goto done;
if (EVP_DigestInit(hash, digest) == 0)
if (hash == NULL) {
SM2err(SM2_F_SM2_DECRYPT, ERR_R_MALLOC_FAILURE);
goto done;
}
if (EVP_DigestUpdate(hash, x2y2, field_size) == 0)
if (!EVP_DigestInit(hash, digest)
|| !EVP_DigestUpdate(hash, x2y2, field_size)
|| !EVP_DigestUpdate(hash, ptext_buf, msg_len)
|| !EVP_DigestUpdate(hash, x2y2 + field_size, field_size)
|| !EVP_DigestFinal(hash, computed_C3, NULL)) {
SM2err(SM2_F_SM2_DECRYPT, ERR_R_EVP_LIB);
goto done;
}
if (EVP_DigestUpdate(hash, ptext_buf, msg_len) == 0)
goto done;
if (EVP_DigestUpdate(hash, x2y2 + field_size, field_size) == 0)
goto done;
if (EVP_DigestFinal(hash, computed_C3, NULL) == 0)
goto done;
if (memcmp(computed_C3, C3, hash_size) != 0)
if (CRYPTO_memcmp(computed_C3, C3, hash_size) != 0) {
SM2err(SM2_F_SM2_DECRYPT, SM2_R_INVALID_DIGEST);
goto done;
}
rc = 1;
*ptext_len = msg_len;
done:
if (rc == 0)
memset(ptext_buf, 0, *ptext_len);
crypto/sm2/sm2_err.c
+13 -88
View File
@@ -9,109 +9,34 @@
*/
#include <openssl/err.h>
#include <openssl/sm2err.h>
#include "internal/sm2err.h"
#ifndef OPENSSL_NO_ERR
static const ERR_STRING_DATA SM2_str_functs[] = {
{ERR_PACK(ERR_LIB_SM2, SM2_F_PKEY_SM2_CTRL, 0), "pkey_sm2_ctrl"},
{ERR_PACK(ERR_LIB_SM2, SM2_F_PKEY_SM2_CTRL_STR, 0), "pkey_sm2_ctrl_str"},
{ERR_PACK(ERR_LIB_SM2, SM2_F_PKEY_SM2_KEYGEN, 0), "pkey_sm2_keygen"},
{ERR_PACK(ERR_LIB_SM2, SM2_F_PKEY_SM2_PARAMGEN, 0), "pkey_sm2_paramgen"},
{ERR_PACK(ERR_LIB_SM2, SM2_F_PKEY_SM2_SIGN, 0), "pkey_sm2_sign"},
{ERR_PACK(ERR_LIB_SM2, SM2_F_SM2_COMPUTE_MSG_HASH, 0),
"sm2_compute_msg_hash"},
{ERR_PACK(ERR_LIB_SM2, SM2_F_SM2_COMPUTE_USERID_DIGEST, 0),
"sm2_compute_userid_digest"},
{ERR_PACK(ERR_LIB_SM2, SM2_F_SM2_DECRYPT, 0), "sm2_decrypt"},
{ERR_PACK(ERR_LIB_SM2, SM2_F_SM2_ENCRYPT, 0), "sm2_encrypt"},
{ERR_PACK(ERR_LIB_SM2, SM2_F_SM2_PLAINTEXT_SIZE, 0), "sm2_plaintext_size"},
{ERR_PACK(ERR_LIB_SM2, SM2_F_SM2_SIGN, 0), "sm2_sign"},
{ERR_PACK(ERR_LIB_SM2, SM2_F_SM2_SIG_GEN, 0), "sm2_sig_gen"},
{ERR_PACK(ERR_LIB_SM2, SM2_F_SM2_SIG_VERIFY, 0), "sm2_sig_verify"},
{ERR_PACK(ERR_LIB_SM2, SM2_F_SM2_VERIFY, 0), "sm2_verify"},
{0, NULL}
};
static const ERR_STRING_DATA SM2_str_reasons[] = {
{ERR_PACK(ERR_LIB_SM2, 0, SM2_R_ASN1_ERROR), "asn1 error"},
{ERR_PACK(ERR_LIB_SM2, 0, SM2_R_ASN5_ERROR), "asn5 error"},
{ERR_PACK(ERR_LIB_SM2, 0, SM2_R_BAD_SIGNATURE), "bad signature"},
{ERR_PACK(ERR_LIB_SM2, 0, SM2_R_BIGNUM_OUT_OF_RANGE),
"bignum out of range"},
{ERR_PACK(ERR_LIB_SM2, 0, SM2_R_BUFFER_TOO_SMALL), "buffer too small"},
{ERR_PACK(ERR_LIB_SM2, 0, SM2_R_COORDINATES_OUT_OF_RANGE),
"coordinates out of range"},
{ERR_PACK(ERR_LIB_SM2, 0, SM2_R_CURVE_DOES_NOT_SUPPORT_ECDH),
"curve does not support ecdh"},
{ERR_PACK(ERR_LIB_SM2, 0, SM2_R_CURVE_DOES_NOT_SUPPORT_SIGNING),
"curve does not support signing"},
{ERR_PACK(ERR_LIB_SM2, 0, SM2_R_D2I_ECPKPARAMETERS_FAILURE),
"d2i ecpkparameters failure"},
{ERR_PACK(ERR_LIB_SM2, 0, SM2_R_DECODE_ERROR), "decode error"},
{ERR_PACK(ERR_LIB_SM2, 0, SM2_R_DISCRIMINANT_IS_ZERO),
"discriminant is zero"},
{ERR_PACK(ERR_LIB_SM2, 0, SM2_R_EC_GROUP_NEW_BY_NAME_FAILURE),
"ec group new by name failure"},
{ERR_PACK(ERR_LIB_SM2, 0, SM2_R_FIELD_TOO_LARGE), "field too large"},
{ERR_PACK(ERR_LIB_SM2, 0, SM2_R_GF2M_NOT_SUPPORTED), "gf2m not supported"},
{ERR_PACK(ERR_LIB_SM2, 0, SM2_R_GROUP2PKPARAMETERS_FAILURE),
"group2pkparameters failure"},
{ERR_PACK(ERR_LIB_SM2, 0, SM2_R_I2D_ECPKPARAMETERS_FAILURE),
"i2d ecpkparameters failure"},
{ERR_PACK(ERR_LIB_SM2, 0, SM2_R_INCOMPATIBLE_OBJECTS),
"incompatible objects"},
{ERR_PACK(ERR_LIB_SM2, 0, SM2_R_INVALID_ARGUMENT), "invalid argument"},
{ERR_PACK(ERR_LIB_SM2, 0, SM2_R_INVALID_COMPRESSED_POINT),
"invalid compressed point"},
{ERR_PACK(ERR_LIB_SM2, 0, SM2_R_INVALID_COMPRESSION_BIT),
"invalid compression bit"},
{ERR_PACK(ERR_LIB_SM2, 0, SM2_R_INVALID_CURVE), "invalid curve"},
{ERR_PACK(ERR_LIB_SM2, 0, SM2_R_INVALID_DIGEST), "invalid digest"},
{ERR_PACK(ERR_LIB_SM2, 0, SM2_R_INVALID_DIGEST_TYPE),
"invalid digest type"},
{ERR_PACK(ERR_LIB_SM2, 0, SM2_R_INVALID_ENCODING), "invalid encoding"},
{ERR_PACK(ERR_LIB_SM2, 0, SM2_R_INVALID_FIELD), "invalid field"},
{ERR_PACK(ERR_LIB_SM2, 0, SM2_R_INVALID_FORM), "invalid form"},
{ERR_PACK(ERR_LIB_SM2, 0, SM2_R_INVALID_GROUP_ORDER),
"invalid group order"},
{ERR_PACK(ERR_LIB_SM2, 0, SM2_R_INVALID_KEY), "invalid key"},
{ERR_PACK(ERR_LIB_SM2, 0, SM2_R_INVALID_OUTPUT_LENGTH),
"invalid output length"},
{ERR_PACK(ERR_LIB_SM2, 0, SM2_R_INVALID_PEER_KEY), "invalid peer key"},
{ERR_PACK(ERR_LIB_SM2, 0, SM2_R_INVALID_PENTANOMIAL_BASIS),
"invalid pentanomial basis"},
{ERR_PACK(ERR_LIB_SM2, 0, SM2_R_INVALID_PRIVATE_KEY),
"invalid private key"},
{ERR_PACK(ERR_LIB_SM2, 0, SM2_R_INVALID_TRINOMIAL_BASIS),
"invalid trinomial basis"},
{ERR_PACK(ERR_LIB_SM2, 0, SM2_R_KDF_PARAMETER_ERROR),
"kdf parameter error"},
{ERR_PACK(ERR_LIB_SM2, 0, SM2_R_KEYS_NOT_SET), "keys not set"},
{ERR_PACK(ERR_LIB_SM2, 0, SM2_R_MISSING_PARAMETERS), "missing parameters"},
{ERR_PACK(ERR_LIB_SM2, 0, SM2_R_MISSING_PRIVATE_KEY),
"missing private key"},
{ERR_PACK(ERR_LIB_SM2, 0, SM2_R_NEED_NEW_SETUP_VALUES),
"need new setup values"},
{ERR_PACK(ERR_LIB_SM2, 0, SM2_R_NOT_A_NIST_PRIME), "not a NIST prime"},
{ERR_PACK(ERR_LIB_SM2, 0, SM2_R_NOT_IMPLEMENTED), "not implemented"},
{ERR_PACK(ERR_LIB_SM2, 0, SM2_R_NOT_INITIALIZED), "not initialized"},
{ERR_PACK(ERR_LIB_SM2, 0, SM2_R_NO_PARAMETERS_SET), "no parameters set"},
{ERR_PACK(ERR_LIB_SM2, 0, SM2_R_NO_PRIVATE_VALUE), "no private value"},
{ERR_PACK(ERR_LIB_SM2, 0, SM2_R_OPERATION_NOT_SUPPORTED),
"operation not supported"},
{ERR_PACK(ERR_LIB_SM2, 0, SM2_R_PASSED_NULL_PARAMETER),
"passed null parameter"},
{ERR_PACK(ERR_LIB_SM2, 0, SM2_R_PEER_KEY_ERROR), "peer key error"},
{ERR_PACK(ERR_LIB_SM2, 0, SM2_R_PKPARAMETERS2GROUP_FAILURE),
"pkparameters2group failure"},
{ERR_PACK(ERR_LIB_SM2, 0, SM2_R_POINT_ARITHMETIC_FAILURE),
"point arithmetic failure"},
{ERR_PACK(ERR_LIB_SM2, 0, SM2_R_POINT_AT_INFINITY), "point at infinity"},
{ERR_PACK(ERR_LIB_SM2, 0, SM2_R_POINT_IS_NOT_ON_CURVE),
"point is not on curve"},
{ERR_PACK(ERR_LIB_SM2, 0, SM2_R_RANDOM_NUMBER_GENERATION_FAILED),
"random number generation failed"},
{ERR_PACK(ERR_LIB_SM2, 0, SM2_R_SHARED_INFO_ERROR), "shared info error"},
{ERR_PACK(ERR_LIB_SM2, 0, SM2_R_SLOT_FULL), "slot full"},
{ERR_PACK(ERR_LIB_SM2, 0, SM2_R_UNDEFINED_GENERATOR),
"undefined generator"},
{ERR_PACK(ERR_LIB_SM2, 0, SM2_R_UNDEFINED_ORDER), "undefined order"},
{ERR_PACK(ERR_LIB_SM2, 0, SM2_R_UNKNOWN_GROUP), "unknown group"},
{ERR_PACK(ERR_LIB_SM2, 0, SM2_R_UNKNOWN_ORDER), "unknown order"},
{ERR_PACK(ERR_LIB_SM2, 0, SM2_R_UNSUPPORTED_FIELD), "unsupported field"},
{ERR_PACK(ERR_LIB_SM2, 0, SM2_R_WRONG_CURVE_PARAMETERS),
"wrong curve parameters"},
{ERR_PACK(ERR_LIB_SM2, 0, SM2_R_WRONG_ORDER), "wrong order"},
{ERR_PACK(ERR_LIB_SM2, 0, SM2_R_USER_ID_TOO_LARGE), "user id too large"},
{0, NULL}
};
crypto/sm2/sm2_sign.c
+149 -106
View File
@@ -9,44 +9,51 @@
* https://www.openssl.org/source/license.html
*/
#include <openssl/sm2.h>
#include "internal/sm2.h"
#include "internal/sm2err.h"
#include <openssl/err.h>
#include <openssl/evp.h>
#include <openssl/err.h>
#include <openssl/bn.h>
#include <string.h>
static BIGNUM *compute_msg_hash(const EVP_MD *digest,
const EC_KEY *key,
const char *user_id,
const uint8_t *msg, size_t msg_len)
static BIGNUM *sm2_compute_msg_hash(const EVP_MD *digest,
const EC_KEY *key,
const char *user_id,
const uint8_t *msg, size_t msg_len)
{
EVP_MD_CTX *hash = EVP_MD_CTX_new();
const int md_size = EVP_MD_size(digest);
uint8_t *za = OPENSSL_zalloc(md_size);
BIGNUM *e = NULL;
if (za == NULL)
if (hash == NULL || za == NULL) {
SM2err(SM2_F_SM2_COMPUTE_MSG_HASH, ERR_R_MALLOC_FAILURE);
goto done;
}
if (hash == NULL)
if (md_size < 0) {
SM2err(SM2_F_SM2_COMPUTE_MSG_HASH, SM2_R_INVALID_DIGEST);
goto done;
}
if (SM2_compute_userid_digest(za, digest, user_id, key) == 0)
if (!sm2_compute_userid_digest(za, digest, user_id, key)) {
/* SM2err already called */
goto done;
}
if (EVP_DigestInit(hash, digest) == 0)
goto done;
if (EVP_DigestUpdate(hash, za, md_size) == 0)
goto done;
if (EVP_DigestUpdate(hash, msg, msg_len) == 0)
goto done;
/* reuse za buffer to hold H(ZA || M) */
if (EVP_DigestFinal(hash, za, NULL) == 0)
if (!EVP_DigestInit(hash, digest)
|| !EVP_DigestUpdate(hash, za, md_size)
|| !EVP_DigestUpdate(hash, msg, msg_len)
/* reuse za buffer to hold H(ZA || M) */
|| !EVP_DigestFinal(hash, za, NULL)) {
SM2err(SM2_F_SM2_COMPUTE_MSG_HASH, ERR_R_EVP_LIB);
goto done;
}
e = BN_bin2bn(za, md_size, NULL);
if (e == NULL)
SM2err(SM2_F_SM2_COMPUTE_MSG_HASH, ERR_R_INTERNAL_ERROR);
done:
OPENSSL_free(za);
@@ -54,13 +61,11 @@ static BIGNUM *compute_msg_hash(const EVP_MD *digest,
return e;
}
static
ECDSA_SIG *SM2_sig_gen(const EC_KEY *key, const BIGNUM *e)
static ECDSA_SIG *sm2_sig_gen(const EC_KEY *key, const BIGNUM *e)
{
const BIGNUM *dA = EC_KEY_get0_private_key(key);
const EC_GROUP *group = EC_KEY_get0_group(key);
const BIGNUM *order = EC_GROUP_get0_order(group);
ECDSA_SIG *sig = NULL;
EC_POINT *kG = NULL;
BN_CTX *ctx = NULL;
@@ -72,63 +77,75 @@ ECDSA_SIG *SM2_sig_gen(const EC_KEY *key, const BIGNUM *e)
BIGNUM *tmp = NULL;
kG = EC_POINT_new(group);
if (kG == NULL)
goto done;
ctx = BN_CTX_new();
if (ctx == NULL)
if (kG == NULL || ctx == NULL) {
SM2err(SM2_F_SM2_SIG_GEN, ERR_R_MALLOC_FAILURE);
goto done;
}
BN_CTX_start(ctx);
k = BN_CTX_get(ctx);
rk = BN_CTX_get(ctx);
x1 = BN_CTX_get(ctx);
tmp = BN_CTX_get(ctx);
if (tmp == NULL)
if (tmp == NULL) {
SM2err(SM2_F_SM2_SIG_GEN, ERR_R_MALLOC_FAILURE);
goto done;
}
/* These values are returned and so should not be allocated out of the context */
/*
* These values are returned and so should not be allocated out of the
* context
*/
r = BN_new();
s = BN_new();
if (r == NULL || s == NULL)
if (r == NULL || s == NULL) {
SM2err(SM2_F_SM2_SIG_GEN, ERR_R_MALLOC_FAILURE);
goto done;
}
for (;;) {
BN_priv_rand_range(k, order);
if (!BN_priv_rand_range(k, order)) {
SM2err(SM2_F_SM2_SIG_GEN, ERR_R_INTERNAL_ERROR);
goto done;
}
if (EC_POINT_mul(group, kG, k, NULL, NULL, ctx) == 0)
goto done;
if (EC_POINT_get_affine_coordinates_GFp(group, kG, x1, NULL, ctx) == 0)
goto done;
if (BN_mod_add(r, e, x1, order, ctx) == 0)
if (!EC_POINT_mul(group, kG, k, NULL, NULL, ctx)
|| !EC_POINT_get_affine_coordinates_GFp(group, kG, x1, NULL,
ctx)
|| !BN_mod_add(r, e, x1, order, ctx)) {
SM2err(SM2_F_SM2_SIG_GEN, ERR_R_INTERNAL_ERROR);
goto done;
}
/* try again if r == 0 or r+k == n */
if (BN_is_zero(r))
continue;
BN_add(rk, r, k);
if (!BN_add(rk, r, k)) {
SM2err(SM2_F_SM2_SIG_GEN, ERR_R_INTERNAL_ERROR);
goto done;
}
if (BN_cmp(rk, order) == 0)
continue;
BN_add(s, dA, BN_value_one());
BN_mod_inverse(s, s, order, ctx);
BN_mod_mul(tmp, dA, r, order, ctx);
BN_sub(tmp, k, tmp);
BN_mod_mul(s, s, tmp, order, ctx);
if (!BN_add(s, dA, BN_value_one())
|| !BN_mod_inverse(s, s, order, ctx)
|| !BN_mod_mul(tmp, dA, r, order, ctx)
|| !BN_sub(tmp, k, tmp)
|| !BN_mod_mul(s, s, tmp, order, ctx)) {
SM2err(SM2_F_SM2_SIG_GEN, ERR_R_BN_LIB);
goto done;
}
sig = ECDSA_SIG_new();
if (sig == NULL)
if (sig == NULL) {
SM2err(SM2_F_SM2_SIG_GEN, ERR_R_MALLOC_FAILURE);
goto done;
}
/* takes ownership of r and s */
ECDSA_SIG_set0(sig, r, s);
@@ -136,7 +153,6 @@ ECDSA_SIG *SM2_sig_gen(const EC_KEY *key, const BIGNUM *e)
}
done:
if (sig == NULL) {
BN_free(r);
BN_free(s);
@@ -145,74 +161,76 @@ ECDSA_SIG *SM2_sig_gen(const EC_KEY *key, const BIGNUM *e)
BN_CTX_free(ctx);
EC_POINT_free(kG);
return sig;
}
static
int SM2_sig_verify(const EC_KEY *key, const ECDSA_SIG *sig, const BIGNUM *e)
static int sm2_sig_verify(const EC_KEY *key, const ECDSA_SIG *sig,
const BIGNUM *e)
{
int ret = 0;
const EC_GROUP *group = EC_KEY_get0_group(key);
const BIGNUM *order = EC_GROUP_get0_order(group);
BN_CTX *ctx = NULL;
EC_POINT *pt = NULL;
BIGNUM *t = NULL;
BIGNUM *x1 = NULL;
const BIGNUM *r = NULL;
const BIGNUM *s = NULL;
ctx = BN_CTX_new();
if (ctx == NULL)
goto done;
pt = EC_POINT_new(group);
if (pt == NULL)
if (ctx == NULL || pt == NULL) {
SM2err(SM2_F_SM2_SIG_VERIFY, ERR_R_MALLOC_FAILURE);
goto done;
}
BN_CTX_start(ctx);
t = BN_CTX_get(ctx);
x1 = BN_CTX_get(ctx);
if (x1 == NULL)
if (x1 == NULL) {
SM2err(SM2_F_SM2_SIG_VERIFY, ERR_R_MALLOC_FAILURE);
goto done;
}
/*
B1: verify whether r' in [1,n-1], verification failed if not
B2: vefify whether s' in [1,n-1], verification failed if not
B3: set M'~=ZA || M'
B4: calculate e'=Hv(M'~)
B5: calculate t = (r' + s') modn, verification failed if t=0
B6: calculate the point (x1', y1')=[s']G + [t]PA
B7: calculate R=(e'+x1') modn, verfication pass if yes, otherwise failed
* B1: verify whether r' in [1,n-1], verification failed if not
* B2: vefify whether s' in [1,n-1], verification failed if not
* B3: set M'~=ZA || M'
* B4: calculate e'=Hv(M'~)
* B5: calculate t = (r' + s') modn, verification failed if t=0
* B6: calculate the point (x1', y1')=[s']G + [t]PA
* B7: calculate R=(e'+x1') modn, verfication pass if yes, otherwise failed
*/
ECDSA_SIG_get0(sig, &r, &s);
if (BN_cmp(r, BN_value_one()) < 0)
goto done;
if (BN_cmp(s, BN_value_one()) < 0)
if (BN_cmp(r, BN_value_one()) < 0
|| BN_cmp(s, BN_value_one()) < 0
|| BN_cmp(order, r) <= 0
|| BN_cmp(order, s) <= 0) {
SM2err(SM2_F_SM2_SIG_VERIFY, SM2_R_BAD_SIGNATURE);
goto done;
}
if (BN_cmp(order, r) <= 0)
goto done;
if (BN_cmp(order, s) <= 0)
if (!BN_mod_add(t, r, s, order, ctx)) {
SM2err(SM2_F_SM2_SIG_VERIFY, ERR_R_BN_LIB);
goto done;
}
if (BN_mod_add(t, r, s, order, ctx) == 0)
if (BN_is_zero(t)) {
SM2err(SM2_F_SM2_SIG_VERIFY, SM2_R_BAD_SIGNATURE);
goto done;
}
if (BN_is_zero(t) == 1)
if (!EC_POINT_mul(group, pt, s, EC_KEY_get0_public_key(key), t, ctx)
|| !EC_POINT_get_affine_coordinates_GFp(group, pt, x1, NULL, ctx)) {
SM2err(SM2_F_SM2_SIG_VERIFY, ERR_R_EC_LIB);
goto done;
}
if (EC_POINT_mul(group, pt, s, EC_KEY_get0_public_key(key), t, ctx) == 0)
goto done;
if (EC_POINT_get_affine_coordinates_GFp(group, pt, x1, NULL, ctx) == 0)
goto done;
if (BN_mod_add(t, e, x1, order, ctx) == 0)
if (!BN_mod_add(t, e, x1, order, ctx)) {
SM2err(SM2_F_SM2_SIG_VERIFY, ERR_R_BN_LIB);
goto done;
}
if (BN_cmp(r, t) == 0)
ret = 1;
@@ -223,61 +241,74 @@ int SM2_sig_verify(const EC_KEY *key, const ECDSA_SIG *sig, const BIGNUM *e)
return ret;
}
ECDSA_SIG *SM2_do_sign(const EC_KEY *key,
ECDSA_SIG *sm2_do_sign(const EC_KEY *key,
const EVP_MD *digest,
const char *user_id, const uint8_t *msg, size_t msg_len)
{
BIGNUM *e = NULL;
ECDSA_SIG *sig = NULL;
e = compute_msg_hash(digest, key, user_id, msg, msg_len);
if (e == NULL)
e = sm2_compute_msg_hash(digest, key, user_id, msg, msg_len);
if (e == NULL) {
/* SM2err already called */
goto done;
}
sig = SM2_sig_gen(key, e);
sig = sm2_sig_gen(key, e);
done:
BN_free(e);
return sig;
}
int SM2_do_verify(const EC_KEY *key,
int sm2_do_verify(const EC_KEY *key,
const EVP_MD *digest,
const ECDSA_SIG *sig,
const char *user_id, const uint8_t *msg, size_t msg_len)
{
BIGNUM *e = NULL;
int ret = -1;
int ret = 0;
e = compute_msg_hash(digest, key, user_id, msg, msg_len);
if (e == NULL)
e = sm2_compute_msg_hash(digest, key, user_id, msg, msg_len);
if (e == NULL) {
/* SM2err already called */
goto done;
}
ret = SM2_sig_verify(key, sig, e);
ret = sm2_sig_verify(key, sig, e);
done:
BN_free(e);
return ret;
}
int SM2_sign(int type, const unsigned char *dgst, int dgstlen,
int sm2_sign(int type, const unsigned char *dgst, int dgstlen,
unsigned char *sig, unsigned int *siglen, EC_KEY *eckey)
{
BIGNUM *e = NULL;
ECDSA_SIG *s = NULL;
int sigleni;
int ret = -1;
if (type != NID_sm3)
goto done;
if (dgstlen != 32) /* expected length of SM3 hash */
goto done;
if (type != NID_sm3 || dgstlen != 32) {
SM2err(SM2_F_SM2_SIGN, SM2_R_INVALID_DIGEST_TYPE);
goto done;
}
e = BN_bin2bn(dgst, dgstlen, NULL);
if (e == NULL) {
SM2err(SM2_F_SM2_SIGN, ERR_R_BN_LIB);
goto done;
}
s = SM2_sig_gen(eckey, e);
s = sm2_sig_gen(eckey, e);
*siglen = i2d_ECDSA_SIG(s, &sig);
sigleni = i2d_ECDSA_SIG(s, &sig);
if (sigleni < 0) {
SM2err(SM2_F_SM2_SIGN, ERR_R_INTERNAL_ERROR);
goto done;
}
*siglen = (unsigned int)sigleni;
ret = 1;
@@ -287,7 +318,7 @@ int SM2_sign(int type, const unsigned char *dgst, int dgstlen,
return ret;
}
int SM2_verify(int type, const unsigned char *dgst, int dgstlen,
int sm2_verify(int type, const unsigned char *dgst, int dgstlen,
const unsigned char *sig, int sig_len, EC_KEY *eckey)
{
ECDSA_SIG *s = NULL;
@@ -297,22 +328,34 @@ int SM2_verify(int type, const unsigned char *dgst, int dgstlen,
int derlen = -1;
int ret = -1;
if (type != NID_sm3)
goto done;
if (type != NID_sm3) {
SM2err(SM2_F_SM2_VERIFY, SM2_R_INVALID_DIGEST_TYPE);
goto done;
}
s = ECDSA_SIG_new();
if (s == NULL)
if (s == NULL) {
SM2err(SM2_F_SM2_VERIFY, ERR_R_MALLOC_FAILURE);
goto done;
if (d2i_ECDSA_SIG(&s, &p, sig_len) == NULL)
}
if (d2i_ECDSA_SIG(&s, &p, sig_len) == NULL) {
SM2err(SM2_F_SM2_VERIFY, SM2_R_INVALID_ENCODING);
goto done;
}
/* Ensure signature uses DER and doesn't have trailing garbage */
derlen = i2d_ECDSA_SIG(s, &der);
if (derlen != sig_len || memcmp(sig, der, derlen) != 0)
if (derlen != sig_len || memcmp(sig, der, derlen) != 0) {
SM2err(SM2_F_SM2_VERIFY, SM2_R_INVALID_ENCODING);
goto done;
}
e = BN_bin2bn(dgst, dgstlen, NULL);
if (e == NULL) {
SM2err(SM2_F_SM2_VERIFY, ERR_R_BN_LIB);
goto done;
}
ret = SM2_sig_verify(eckey, s, e);
ret = sm2_sig_verify(eckey, s, e);
done:
OPENSSL_free(der);
crypto/sm2/sm2_za.c
+56 -55
View File
@@ -9,32 +9,29 @@
* https://www.openssl.org/source/license.html
*/
#include <openssl/sm2.h>
#include "internal/sm2.h"
#include "internal/sm2err.h"
#include <openssl/err.h>
#include <openssl/evp.h>
#include <openssl/bn.h>
#include <string.h>
int SM2_compute_userid_digest(uint8_t *out,
int sm2_compute_userid_digest(uint8_t *out,
const EVP_MD *digest,
const char *user_id,
const EC_KEY *key)
{
int rc = 0;
const EC_GROUP *group = EC_KEY_get0_group(key);
BN_CTX *ctx = NULL;
EVP_MD_CTX *hash = NULL;
BIGNUM *p = NULL;
BIGNUM *a = NULL;
BIGNUM *b = NULL;
BIGNUM *xG = NULL;
BIGNUM *yG = NULL;
BIGNUM *xA = NULL;
BIGNUM *yA = NULL;
int p_bytes = 0;
uint8_t *buf = NULL;
size_t uid_len = 0;
@@ -42,12 +39,11 @@ int SM2_compute_userid_digest(uint8_t *out,
uint8_t e_byte = 0;
hash = EVP_MD_CTX_new();
if (hash == NULL)
goto done;
ctx = BN_CTX_new();
if (ctx == NULL)
goto done;
if (hash == NULL || ctx == NULL) {
SM2err(SM2_F_SM2_COMPUTE_USERID_DIGEST, ERR_R_MALLOC_FAILURE);
goto done;
}
p = BN_CTX_get(ctx);
a = BN_CTX_get(ctx);
@@ -57,70 +53,75 @@ int SM2_compute_userid_digest(uint8_t *out,
xA = BN_CTX_get(ctx);
yA = BN_CTX_get(ctx);
if (p == NULL || a == NULL || b == NULL ||
xG == NULL || yG == NULL || xA == NULL || yA == NULL)
goto done;
if (yA == NULL) {
SM2err(SM2_F_SM2_COMPUTE_USERID_DIGEST, ERR_R_MALLOC_FAILURE);
goto done;
}
memset(out, 0, EVP_MD_size(digest));
if (EVP_DigestInit(hash, digest) == 0)
if (!EVP_DigestInit(hash, digest)) {
SM2err(SM2_F_SM2_COMPUTE_USERID_DIGEST, ERR_R_EVP_LIB);
goto done;
}
/*
ZA=H256(ENTLA || IDA || a || b || xG || yG || xA || yA)
*/
/* ZA = H256(ENTLA || IDA || a || b || xG || yG || xA || yA) */
uid_len = strlen(user_id);
if (uid_len >= 8192) /* too large */
if (uid_len >= (UINT16_MAX / 8)) {
/* too large */
SM2err(SM2_F_SM2_COMPUTE_USERID_DIGEST, SM2_R_USER_ID_TOO_LARGE);
goto done;
}
entla = (unsigned short)(8 * uid_len);
entla = (uint16_t)(8 * uid_len);
e_byte = entla >> 8;
if (EVP_DigestUpdate(hash, &e_byte, 1) == 0)
if (!EVP_DigestUpdate(hash, &e_byte, 1)) {
SM2err(SM2_F_SM2_COMPUTE_USERID_DIGEST, ERR_R_EVP_LIB);
goto done;
}
e_byte = entla & 0xFF;
if (EVP_DigestUpdate(hash, &e_byte, 1) == 0)
if (!EVP_DigestUpdate(hash, &e_byte, 1)
|| !EVP_DigestUpdate(hash, user_id, uid_len)) {
SM2err(SM2_F_SM2_COMPUTE_USERID_DIGEST, ERR_R_EVP_LIB);
goto done;
}
if (EVP_DigestUpdate(hash, user_id, uid_len) == 0)
goto done;
if (EC_GROUP_get_curve_GFp(group, p, a, b, ctx) == 0)
if (!EC_GROUP_get_curve_GFp(group, p, a, b, ctx)) {
SM2err(SM2_F_SM2_COMPUTE_USERID_DIGEST, ERR_R_EC_LIB);
goto done;
}
p_bytes = BN_num_bytes(p);
buf = OPENSSL_zalloc(p_bytes);
if (buf == NULL) {
SM2err(SM2_F_SM2_COMPUTE_USERID_DIGEST, ERR_R_MALLOC_FAILURE);
goto done;
}
BN_bn2binpad(a, buf, p_bytes);
if (EVP_DigestUpdate(hash, buf, p_bytes) == 0)
goto done;
BN_bn2binpad(b, buf, p_bytes);
if (EVP_DigestUpdate(hash, buf, p_bytes) == 0)
goto done;
EC_POINT_get_affine_coordinates_GFp(group,
EC_GROUP_get0_generator(group),
xG, yG, ctx);
BN_bn2binpad(xG, buf, p_bytes);
if (EVP_DigestUpdate(hash, buf, p_bytes) == 0)
goto done;
BN_bn2binpad(yG, buf, p_bytes);
if (EVP_DigestUpdate(hash, buf, p_bytes) == 0)
goto done;
EC_POINT_get_affine_coordinates_GFp(group,
EC_KEY_get0_public_key(key),
xA, yA, ctx);
BN_bn2binpad(xA, buf, p_bytes);
if (EVP_DigestUpdate(hash, buf, p_bytes) == 0)
goto done;
BN_bn2binpad(yA, buf, p_bytes);
if (EVP_DigestUpdate(hash, buf, p_bytes) == 0)
goto done;
if (EVP_DigestFinal(hash, out, NULL) == 0)
if (BN_bn2binpad(a, buf, p_bytes) < 0
|| !EVP_DigestUpdate(hash, buf, p_bytes)
|| BN_bn2binpad(b, buf, p_bytes) < 0
|| !EVP_DigestUpdate(hash, buf, p_bytes)
|| !EC_POINT_get_affine_coordinates_GFp(group,
EC_GROUP_get0_generator(group),
xG, yG, ctx)
|| BN_bn2binpad(xG, buf, p_bytes) < 0
|| !EVP_DigestUpdate(hash, buf, p_bytes)
|| BN_bn2binpad(yG, buf, p_bytes) < 0
|| !EVP_DigestUpdate(hash, buf, p_bytes)
|| !EC_POINT_get_affine_coordinates_GFp(group,
EC_KEY_get0_public_key(key),
xA, yA, ctx)
|| BN_bn2binpad(xA, buf, p_bytes) < 0
|| !EVP_DigestUpdate(hash, buf, p_bytes)
|| BN_bn2binpad(yA, buf, p_bytes) < 0
|| !EVP_DigestUpdate(hash, buf, p_bytes)
|| !EVP_DigestFinal(hash, out, NULL)) {
SM2err(SM2_F_SM2_COMPUTE_USERID_DIGEST, ERR_R_INTERNAL_ERROR);
goto done;
}
rc = 1;