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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_RING_H
- #define GMSSL_SM2_RING_H
- #include <stdio.h>
- #include <stdint.h>
- #include <stdlib.h>
- #include <gmssl/sm2.h>
- #ifdef __cplusplus
- extern "C" {
- #endif
- typedef uint8_t sm2_bn_t[32];
- int sm2_ring_do_sign(const SM2_KEY *sign_key, const SM2_POINT *public_keys, size_t public_keys_cnt,
- const uint8_t dgst[32], uint8_t r[32], sm2_bn_t *s);
- int sm2_ring_do_verify(const SM2_POINT *public_keys, size_t public_keys_cnt,
- const uint8_t dgst[32], const uint8_t r[32], const sm2_bn_t *s);
- int sm2_ring_signature_to_der(const sm2_bn_t r, const sm2_bn_t *s, size_t s_cnt, uint8_t **out, size_t *outlen);
- int sm2_ring_signature_from_der(sm2_bn_t r, sm2_bn_t *s, size_t *s_cnt, const uint8_t **in, size_t *inlen);
- int sm2_ring_sign(const SM2_KEY *sign_key, const SM2_POINT *public_keys, size_t public_keys_cnt,
- const uint8_t dgst[32], uint8_t *sig, size_t *siglen);
- int sm2_ring_verify(const SM2_POINT *public_keys, size_t public_keys_cnt,
- const uint8_t dgst[32], const uint8_t *sig, size_t siglen);
- #define SM2_RING_SIGN_MAX_SIGNERS 32
- typedef struct {
- int state;
- SM3_CTX sm3_ctx;
- SM2_KEY sign_key;
- SM2_POINT public_keys[SM2_RING_SIGN_MAX_SIGNERS];
- size_t public_keys_count;
- char *id;
- size_t idlen;
- } SM2_RING_SIGN_CTX;
- int sm2_ring_sign_init(SM2_RING_SIGN_CTX *ctx, const SM2_KEY *sign_key, const char *id, size_t idlen);
- int sm2_ring_sign_add_signer(SM2_RING_SIGN_CTX *ctx, const SM2_KEY *public_key);
- int sm2_ring_sign_update(SM2_RING_SIGN_CTX *ctx, const uint8_t *data, size_t datalen);
- int sm2_ring_sign_finish(SM2_RING_SIGN_CTX *ctx, uint8_t *sig, size_t *siglen);
- int sm2_ring_verify_init(SM2_RING_SIGN_CTX *ctx, const char *id, size_t idlen);
- int sm2_ring_verify_add_signer(SM2_RING_SIGN_CTX *ctx, const SM2_KEY *public_key);
- int sm2_ring_verify_update(SM2_RING_SIGN_CTX *ctx, const uint8_t *data, size_t datalen);
- int sm2_ring_verify_finish(SM2_RING_SIGN_CTX *ctx, uint8_t *sig, size_t siglen);
- #ifdef __cplusplus
- }
- #endif
- #endif
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