feat: add gmssl headers

include/gmssl/sm2_blind.h

@@ -0,0 +1,49 @@
+/*
+ *  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