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Update SM2 Extensions

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This commit is contained in:
Zhi Guan
2022-12-30 12:46:47 +08:00
parent 7be0df2b82
commit dc7b9e68ec
19 changed files with 698 additions and 303 deletions
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36
include/gmssl/sm2_elgamal.h
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@@ -21,23 +21,45 @@ extern "C" {
#endif
typedef uint32_t sm2_elgamal_plaintext_t;
#define SM2_PRE_COMPUTE_MAX_OFFSETS 6
typedef struct {
uint16_t offset[SM2_PRE_COMPUTE_MAX_OFFSETS];
uint8_t offset_count;
uint8_t x_coordinate[32];
} SM2_PRE_COMPUTE;
int sm2_elgamal_decrypt_pre_compute(SM2_PRE_COMPUTE table[1<<16]);
int sm2_elgamal_solve_ecdlp(const SM2_PRE_COMPUTE table[1<<16], const SM2_POINT *point, uint32_t *private);
typedef struct {
SM2_POINT C1;
SM2_POINT C2;
} SM2_ELGAMAL_CIPHERTEXT;
int sm2_elgamal_do_encrypt(const SM2_KEY *pub_key, uint32_t in, SM2_ELGAMAL_CIPHERTEXT *out);
int sm2_elgamal_do_decrypt(const SM2_KEY *key, const SM2_ELGAMAL_CIPHERTEXT *in, uint32_t *out);
int sm2_elgamal_ciphertext_add(SM2_ELGAMAL_CIPHERTEXT *r,
const SM2_ELGAMAL_CIPHERTEXT *a,
const SM2_ELGAMAL_CIPHERTEXT *b,
const SM2_KEY *pub_key);
int sm2_elgamal_cipehrtext_sub(SM2_ELGAMAL_CIPHERTEXT *r,
const SM2_ELGAMAL_CIPHERTEXT *a, const SM2_ELGAMAL_CIPHERTEXT *b,
const SM2_KEY *pub_key);
int sm2_elgamal_cipehrtext_neg(SM2_ELGAMAL_CIPHERTEXT *r,
const SM2_ELGAMAL_CIPHERTEXT *a, const SM2_KEY *pub_key);
int sm2_elgamal_ciphertext_scalar_mul(SM2_ELGAMAL_CIPHERTEXT *R,
const uint8_t scalar[32], const SM2_ELGAMAL_CIPHERTEXT *A,
const SM2_KEY *pub_key);
int sm2_elgamal_encrypt(const SM2_KEY *pub_key, sm2_elgamal_plaintext_t in, SM2_ELGAMAL_CIPHERTEXT *out);
int sm2_elgamal_decrypt(const SM2_KEY *key, const SM2_ELGAMAL_CIPHERTEXT *in, sm2_elgamal_plaintext_t *out);
int sm2_elgamal_ciphertext_add(SM2_ELGAMAL_CIPHERTEXT *r, const SM2_ELGAMAL_CIPHERTEXT *a, const SM2_ELGAMAL_CIPHERTEXT *b, const SM2_KEY *pub_key);
int sm2_elgamal_cipehrtext_sub(SM2_ELGAMAL_CIPHERTEXT *r, const SM2_ELGAMAL_CIPHERTEXT *a, const SM2_ELGAMAL_CIPHERTEXT *b, const SM2_KEY *pub_key);
int sm2_elgamal_cipehrtext_neg(SM2_ELGAMAL_CIPHERTEXT *r, const SM2_ELGAMAL_CIPHERTEXT *a, const SM2_KEY *pub_key);
int sm2_elgamal_ciphertext_scalar_mul(SM2_ELGAMAL_CIPHERTEXT *r, uint32_t scalar, const SM2_ELGAMAL_CIPHERTEXT *a, const SM2_KEY *pub_key);
int sm2_elgamal_ciphertext_to_der(const SM2_ELGAMAL_CIPHERTEXT *c, uint8_t **out, size_t *outlen);
int sm2_elgamal_ciphertext_from_der(SM2_ELGAMAL_CIPHERTEXT *c, const uint8_t **in, size_t *inlen);
int sm2_elgamal_encrypt(const SM2_KEY *pub_key, uint32_t in, uint8_t *out, size_t *outlen);
int sm2_elgamal_decrypt(SM2_KEY *key, const uint8_t *in, size_t inlen, uint32_t *out);
#ifdef __cplusplus
}