diff options
Diffstat (limited to 'crypto/sm2/sm2_za.c')
| -rw-r--r-- | crypto/sm2/sm2_za.c | 132 |
1 files changed, 0 insertions, 132 deletions
diff --git a/crypto/sm2/sm2_za.c b/crypto/sm2/sm2_za.c deleted file mode 100644 index 320bee1e18..0000000000 --- a/crypto/sm2/sm2_za.c +++ /dev/null @@ -1,132 +0,0 @@ -/* - * Copyright 2017-2018 The OpenSSL Project Authors. All Rights Reserved. - * Copyright 2017 Ribose Inc. All Rights Reserved. - * Ported from Ribose contributions from Botan. - * - * 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 "internal/sm2.h" -#include "internal/sm2err.h" -#include <openssl/err.h> -#include <openssl/evp.h> -#include <openssl/bn.h> -#include <string.h> -#include "internal/numbers.h" - -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; - uint16_t entla = 0; - uint8_t e_byte = 0; - - hash = EVP_MD_CTX_new(); - ctx = BN_CTX_new(); - 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); - b = BN_CTX_get(ctx); - xG = BN_CTX_get(ctx); - yG = BN_CTX_get(ctx); - xA = BN_CTX_get(ctx); - yA = BN_CTX_get(ctx); - - if (yA == NULL) { - SM2err(SM2_F_SM2_COMPUTE_USERID_DIGEST, ERR_R_MALLOC_FAILURE); - goto done; - } - - 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) */ - - uid_len = strlen(user_id); - if (uid_len >= (UINT16_MAX / 8)) { - /* too large */ - SM2err(SM2_F_SM2_COMPUTE_USERID_DIGEST, SM2_R_USER_ID_TOO_LARGE); - goto done; - } - - entla = (uint16_t)(8 * uid_len); - - e_byte = entla >> 8; - 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) - || !EVP_DigestUpdate(hash, user_id, uid_len)) { - SM2err(SM2_F_SM2_COMPUTE_USERID_DIGEST, ERR_R_EVP_LIB); - goto done; - } - - if (!EC_GROUP_get_curve(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; - } - - 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(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(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; - - done: - OPENSSL_free(buf); - BN_CTX_free(ctx); - EVP_MD_CTX_free(hash); - return rc; -} |