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- /*
- * Copyright 2014-2022 The GmSSL Project. All Rights Reserved.
- *
- * Licensed under the Apache License, Version 2.0 (the License); you may
- * not use this file except in compliance with the License.
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- */
- #ifndef GMSSL_SM2_BLIND_H
- #define GMSSL_SM2_BLIND_H
- #include <stdio.h>
- #include <string.h>
- #include <stdlib.h>
- #include <assert.h>
- #include <gmssl/sm2.h>
- #include <gmssl/mem.h>
- #include <gmssl/asn1.h>
- #include <gmssl/error.h>
- #ifdef __cplusplus
- extern "C" {
- #endif
- typedef struct {
- SM3_CTX sm3_ctx;
- SM2_KEY public_key;
- uint8_t blind_factor_a[32];
- uint8_t blind_factor_b[32];
- uint8_t sig_r[32];
- } SM2_BLIND_SIGN_CTX;
- #define SM2_BLIND_SIGN_MAX_COMMITLEN 65
- int sm2_blind_sign_commit(SM2_Fn k, uint8_t *commit, size_t *commitlen);
- int sm2_blind_sign_init(SM2_BLIND_SIGN_CTX *ctx, const SM2_KEY *public_key, const char *id, size_t idlen);
- int sm2_blind_sign_update(SM2_BLIND_SIGN_CTX *ctx, const uint8_t *data, size_t datalen);
- int sm2_blind_sign_finish(SM2_BLIND_SIGN_CTX *ctx, const uint8_t *commit, size_t commitlen, uint8_t blinded_sig_r[32]);
- int sm2_blind_sign(const SM2_KEY *key, const SM2_Fn k, const uint8_t blinded_sig_r[32], uint8_t blinded_sig_s[32]);
- int sm2_blind_sign_unblind(SM2_BLIND_SIGN_CTX *ctx, const uint8_t blinded_sig_s[32], uint8_t *sig, size_t *siglen);
- #ifdef __cplusplus
- }
- #endif
- #endif
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