mirror of
https://github.com/guanzhi/GmSSL.git
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188 lines
6.2 KiB
C
188 lines
6.2 KiB
C
/*
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* Copyright 2014-2026 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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#ifndef GMSSL_KYBER_H
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#define GMSSL_KYBER_H
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <stdint.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define KYBER_Q 3329
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#define KYBER_ZETA 17
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#define KYBER_N 256
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#define KYBER_ETA2 2
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#define KYBER_POLY_NBYTES (256 * 12 / 8)
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#define KYBER512_K 2
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#define KYBER768_K 3
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#define KYBER1024_K 4
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#define KYBER512_ETA1 3
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#define KYBER768_ETA1 2
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#define KYBER1024_ETA1 2
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#define KYBER512_DU 10
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#define KYBER768_DU 10
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#define KYBER1024_DU 11
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#define KYBER512_DV 4
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#define KYBER769_DV 4
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#define KYBER1024_DV 5
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#define KYBER_K KYBER512_K
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#define KYBER_ETA1 KYBER512_ETA1
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#define KYBER_DU KYBER512_DU
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#define KYBER_DV KYBER512_DV
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#define KYBER_C1_SIZE ((256 * KYBER_DU)/8)
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#define KYBER_C2_SIZE ((256 * KYBER_DV)/8)
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#define KYBER_TEST
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/*
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CRYSTALS-Kyber Algorithm Specifications and Supporing Documentation (version 3.02)
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FIPS-202 90s
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XOF SHAKE-128 AES256-CTR MGF1-SM3
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H SHA3-256 SHA256 SM3
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G SHA3-512 SHA512 MGF1-SM3
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PRF(s,b) SHAKE-256(s||b) AES256-CTR HKDF-SM3
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KDF SHAKE-256 SHA256 HKDF-SM3
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*/
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void kyber_h_hash(const uint8_t *in, size_t inlen, uint8_t out[32]);
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void kyber_g_hash(const uint8_t *in, size_t inlen, uint8_t out[64]);
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typedef int16_t kyber_poly_t[256];
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#define KYBER_FMT_POLY 1
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#define KYBER_FMT_HEX 2
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int kyber_poly_print(FILE *fp, int fmt, int ind, const char *label, const kyber_poly_t a);
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void kyber_poly_set_zero(kyber_poly_t r);
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int kyber_poly_rand(kyber_poly_t r);
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int kyber_poly_uniform_sample(kyber_poly_t r, const uint8_t rho[32], uint8_t j, uint8_t i);
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int kyber_poly_cbd_sample(kyber_poly_t r, int eta, const uint8_t secret[32], uint8_t n);
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int kyber_poly_equ(const kyber_poly_t a, const kyber_poly_t b);
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void kyber_poly_add(kyber_poly_t r, const kyber_poly_t a, const kyber_poly_t b);
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void kyber_poly_sub(kyber_poly_t r, const kyber_poly_t a, const kyber_poly_t b);
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int16_t zeta[256];
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void init_zeta(void);
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int kyber_poly_ntt(int16_t a[256]);
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int kyber_poly_inv_ntt(int16_t a[256]);
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int kyber_poly_ntt_mul(kyber_poly_t r, const kyber_poly_t a, const kyber_poly_t b);
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void kyber_poly_copy(kyber_poly_t r, const kyber_poly_t a);
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int kyber_poly_mul(kyber_poly_t r, const kyber_poly_t a, const kyber_poly_t b);
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void kyber_poly_ntt_mul_scalar(kyber_poly_t r, int scalar, const kyber_poly_t a);
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int kyber_poly_to_signed(const kyber_poly_t a, kyber_poly_t r);
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int kyber_poly_from_signed(kyber_poly_t r, const kyber_poly_t a);
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int kyber_poly_compress(const kyber_poly_t a, int dbits, kyber_poly_t z);
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int kyber_poly_decompress(kyber_poly_t r, int dbits, const kyber_poly_t z);
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int kyber_poly_encode12(const kyber_poly_t a, uint8_t out[384]);
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int kyber_poly_decode12(kyber_poly_t r, const uint8_t in[384]);
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int kyber_poly_encode10(const kyber_poly_t a, uint8_t out[320]);
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int kyber_poly_decode10(kyber_poly_t r, const uint8_t in[320]);
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int kyber_poly_encode4(const kyber_poly_t a, uint8_t out[128]);
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void kyber_poly_decode4(kyber_poly_t r, const uint8_t in[128]);
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void kyber_poly_decode1(kyber_poly_t r, const uint8_t in[32]);
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int kyber_poly_encode1(const kyber_poly_t a, uint8_t out[32]);
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typedef struct {
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uint8_t t[KYBER_K][384];
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uint8_t rho[32];
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} KYBER_CPA_PUBLIC_KEY;
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typedef struct {
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KYBER_CPA_PUBLIC_KEY public_key;
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uint8_t s[KYBER_K][384];
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} KYBER_CPA_KEY;
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int kyber_cpa_key_generate_ex(KYBER_CPA_KEY *key, const uint8_t random[32]);
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int kyber_cpa_public_key_to_bytes(const KYBER_CPA_KEY *key, uint8_t **out, size_t *outlen);
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int kyber_cpa_public_key_from_bytes(KYBER_CPA_KEY *key, const uint8_t **in, size_t *inlen);
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int kyber_cpa_public_key_print(FILE *fp, int fmt, int ind, const char *label, const KYBER_CPA_KEY *pk);
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int kyber_cpa_private_key_to_bytes(const KYBER_CPA_KEY *key, uint8_t **out, size_t *outlen);
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int kyber_cpa_private_key_from_bytes(KYBER_CPA_KEY *key, const uint8_t **in, size_t *inlen);
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int kyber_cpa_private_key_print(FILE *fp, int fmt, int ind, const char *label, const KYBER_CPA_KEY *sk);
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void kyber_cpa_key_cleanup(KYBER_CPA_KEY *key);
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typedef struct {
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uint8_t c1[KYBER_K][KYBER_C1_SIZE];
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uint8_t c2[KYBER_C2_SIZE];
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} KYBER_CPA_CIPHERTEXT;
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int kyber_cpa_encrypt(const KYBER_CPA_KEY *pk, const uint8_t in[32],
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const uint8_t rand[32], KYBER_CPA_CIPHERTEXT *out);
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int kyber_cpa_decrypt(const KYBER_CPA_KEY *sk, const KYBER_CPA_CIPHERTEXT *in,
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uint8_t out[32]);
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int kyber_cpa_ciphertext_to_bytes(const KYBER_CPA_CIPHERTEXT *ciphertext, uint8_t **out, size_t *outlen);
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int kyber_cpa_ciphertext_from_bytes(KYBER_CPA_CIPHERTEXT *ciphertext, const uint8_t **in, size_t *inlen);
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int kyber_cpa_ciphertext_print(FILE *fp, int fmt, int ind, const char *label, const KYBER_CPA_CIPHERTEXT *c);
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typedef KYBER_CPA_PUBLIC_KEY KYBER_PUBLIC_KEY;
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typedef struct {
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KYBER_CPA_KEY cpa_key;
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uint8_t pk_hash[32];
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uint8_t z[32];
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} KYBER_KEY;
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#define KYBER_PUBLIC_KEY_SIZE sizeof(KYBER_PUBLIC_KEY)
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#define KYBER_PRIVATE_KEY_SIZE sizeof(KYBER_KEY)
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int kyber_key_generate_ex(KYBER_KEY *key, const uint8_t random[32]);
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int kyber_public_key_to_bytes(const KYBER_KEY *key, uint8_t **out, size_t *outlen);
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int kyber_public_key_from_bytes(KYBER_KEY *key, const uint8_t **in, size_t *inlen);
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int kyber_public_key_print(FILE *fp, int fmt, int ind, const char *label, const KYBER_KEY *pk);
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int kyber_private_key_to_bytes(const KYBER_KEY *key, uint8_t **out, size_t *outlen);
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int kyber_private_key_from_bytes(KYBER_KEY *key, const uint8_t **in, size_t *inlen);
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int kyber_private_key_print(FILE *fp, int fmt, int ind, const char *label, const KYBER_KEY *sk);
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void kyber_key_cleanup(KYBER_KEY *key);
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typedef KYBER_CPA_CIPHERTEXT KYBER_CIPHERTEXT;
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int kyber_ciphertext_to_bytes(const KYBER_CIPHERTEXT *ciphertext, uint8_t **out, size_t *outlen);
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int kyber_ciphertext_from_bytes(KYBER_CIPHERTEXT *ciphertext, const uint8_t **in, size_t *inlen);
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int kyber_ciphertext_print(FILE *fp, int fmt, int ind, const char *label, const KYBER_CIPHERTEXT *c);
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int kyber_encap(const KYBER_KEY *pk, KYBER_CIPHERTEXT *c, uint8_t K[32]);
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int kyber_decap(const KYBER_KEY *sk, const KYBER_CIPHERTEXT *c, uint8_t K[32]);
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#ifdef __cplusplus
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}
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#endif
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#endif
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