46 lines
1.1 KiB
C
46 lines
1.1 KiB
C
/*
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* Copyright 2014-2022 The GmSSL Project. All Rights Reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the License); you may
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* not use this file except in compliance with the License.
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*/
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// SM2 Key Shamir Secret Sharing
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#ifndef GMSSL_SM2_KEY_SHARE_H
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#define GMSSL_SM2_KEY_SHARE_H
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#include <stdio.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <gmssl/sm2.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define SM2_KEY_MAX_SHARES 12 // 12! = 479001600 < 2^31 = 2147483648
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typedef struct {
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SM2_KEY key;
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size_t index;
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size_t total_cnt;
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} SM2_KEY_SHARE;
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int sm2_key_split(const SM2_KEY *key, size_t recover_cnt, size_t total_cnt, SM2_KEY_SHARE *shares);
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int sm2_key_recover(SM2_KEY *key, const SM2_KEY_SHARE *shares, size_t shares_cnt);
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int sm2_key_share_encrypt_to_file(const SM2_KEY_SHARE *share, const char *pass, const char *path_prefix);
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int sm2_key_share_decrypt_from_file(SM2_KEY_SHARE *share, const char *pass, const char *file);
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int sm2_key_share_print(FILE *fp, int fmt, int ind, const char *label, const SM2_KEY_SHARE *share);
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#ifdef __cplusplus
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}
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#endif
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#endif
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