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Update Kyber

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This commit is contained in:
Zhi Guan
2026-01-12 20:41:44 +08:00
parent 1f64cb7389
commit 3afd4a047b
6 changed files with 354 additions and 423 deletions
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519
src/kyber.c
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@@ -1,5 +1,5 @@
/*
* Copyright 2014-2024 The GmSSL Project. All Rights Reserved.
* Copyright 2014-2026 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.
@@ -20,24 +20,6 @@
#include <gmssl/kyber.h>
/*
CRYSTALS-Kyber Algorithm Specifications and Supporing Documentation (version 3.02)
FIPS-202 90s
XOF SHAKE-128 AES256-CTR MGF1-SM3
H SHA3-256 SHA256 SM3
G SHA3-512 SHA512 MGF1-SM3
PRF(s,b) SHAKE-256(s||b) AES256-CTR HKDF-SM3
KDF SHAKE-256 SHA256 HKDF-SM3
*/
void kyber_h_hash(const uint8_t *in, size_t inlen, uint8_t out[32])
{
SM3_CTX ctx;
@@ -598,102 +580,7 @@ int kyber_poly_encode1(const kyber_poly_t a, uint8_t out[32])
return 1;
}
/*
78 typedef struct {
79 uint8_t t[KYBER_K][384];
80 uint8_t rho[32];
81 } KYBER_CPA_PUBLIC_KEY;
82
83 typedef struct {
84 // should add public key
85 uint8_t s[KYBER_K][384];
86 } KYBER_CPA_PRIVATE_KEY;
*/
int kyber_cpa_public_key_to_bytes(const KYBER_CPA_PUBLIC_KEY *key, uint8_t **out, size_t *outlen)
{
if (!key || !outlen) {
error_print();
return -1;
}
if (out && *out) {
memcpy(*out, key->t, sizeof(key->t));
*out += sizeof(key->t);
memcpy(*out, key->rho, sizeof(key->rho));
*out += sizeof(key->rho);
}
*outlen += sizeof(key->t);
*outlen += sizeof(key->rho);
return 1;
}
int kyber_cpa_public_key_from_bytes(KYBER_CPA_PUBLIC_KEY *key, const uint8_t **in, size_t *inlen)
{
if (!key || !in || !(*in) || !inlen) {
error_print();
return -1;
}
if (*inlen < sizeof(key->t) + sizeof(key->rho)) {
error_print();
return -1;
}
memset(key, 0, sizeof(*key));
memcpy(key->t, *in, sizeof(key->t));
*in += sizeof(key->t);
*inlen -= sizeof(key->t);
memcpy(key->rho, *in, sizeof(key->rho));
*in += sizeof(key->rho);
*inlen -= sizeof(key->rho);
return 1;
}
int kyber_cpa_private_key_to_bytes(const KYBER_CPA_PRIVATE_KEY *key, uint8_t **out, size_t *outlen)
{
if (!key || !outlen) {
error_print();
return -1;
}
if (kyber_cpa_public_key_to_bytes(&key->public_key, out, outlen) != 1) {
error_print();
return -1;
}
if (out && *out) {
memcpy(*out, key->s, sizeof(key->s));
}
*outlen += sizeof(key->s);
return 1;
}
int kyber_cpa_private_key_from_bytes(KYBER_CPA_PRIVATE_KEY *key, const uint8_t **in, size_t *inlen)
{
if (!key || !in || !(*in) || !inlen) {
error_print();
return -1;
}
/*
if (*inlen < sizeof(key->s)) {
error_print();
return -1;
}
*/
memset(key, 0, sizeof(*key));
if (kyber_cpa_public_key_from_bytes(&key->public_key, in, inlen) != 1) {
error_print();
return -1;
}
memcpy(key->s, *in, sizeof(key->s));
*in += sizeof(key->s);
*inlen -= sizeof(key->s);
return 1;
}
int kyber_cpa_key_generate(KYBER_CPA_PRIVATE_KEY *key)
{
kyber_cpa_keygen(&key->public_key, key);
return 1;
}
int kyber_cpa_keygen(KYBER_CPA_PUBLIC_KEY *pk, KYBER_CPA_PRIVATE_KEY *sk)
int kyber_cpa_key_generate_ex(KYBER_CPA_KEY *key, const uint8_t random[32])
{
kyber_poly_t A[KYBER_K][KYBER_K];
kyber_poly_t s[KYBER_K];
@@ -705,10 +592,13 @@ int kyber_cpa_keygen(KYBER_CPA_PUBLIC_KEY *pk, KYBER_CPA_PRIVATE_KEY *sk)
uint8_t N = 0;
int i,j;
// 应该支持这个函数是由确定的值导出的
if (rand_bytes(d, 32) != 1) {
error_print();
return -1;
if (random) {
memcpy(d, random, 32);
} else {
if (rand_bytes(d, 32) != 1) {
error_print();
return -1;
}
}
kyber_g_hash(d, 32, d);
@@ -757,10 +647,10 @@ int kyber_cpa_keygen(KYBER_CPA_PUBLIC_KEY *pk, KYBER_CPA_PRIVATE_KEY *sk)
// output (pk, sk)
for (i = 0; i < KYBER_K; i++) {
kyber_poly_encode12(t[i], pk->t[i]);
kyber_poly_encode12(s[i], sk->s[i]);
kyber_poly_encode12(t[i], key->public_key.t[i]);
kyber_poly_encode12(s[i], key->s[i]);
}
memcpy(pk->rho, rho, 32);
memcpy(key->public_key.rho, rho, 32);
gmssl_secure_clear(d, sizeof(d));
gmssl_secure_clear(s, sizeof(s));
@@ -769,6 +659,115 @@ int kyber_cpa_keygen(KYBER_CPA_PUBLIC_KEY *pk, KYBER_CPA_PRIVATE_KEY *sk)
return 1;
}
void kyber_cpa_key_cleanup(KYBER_CPA_KEY *key)
{
if (key) {
gmssl_secure_clear(key->s, sizeof(key->s));
}
}
int kyber_cpa_public_key_to_bytes(const KYBER_CPA_KEY *key, uint8_t **out, size_t *outlen)
{
if (!key || !outlen) {
error_print();
return -1;
}
if (out && *out) {
memcpy(*out, key->public_key.t, sizeof(key->public_key.t));
*out += sizeof(key->public_key.t);
memcpy(*out, key->public_key.rho, sizeof(key->public_key.rho));
*out += sizeof(key->public_key.rho);
}
*outlen += sizeof(key->public_key.t);
*outlen += sizeof(key->public_key.rho);
return 1;
}
int kyber_cpa_public_key_from_bytes(KYBER_CPA_KEY *key, const uint8_t **in, size_t *inlen)
{
if (!key || !in || !(*in) || !inlen) {
error_print();
return -1;
}
if (*inlen < sizeof(key->public_key.t) + sizeof(key->public_key.rho)) {
error_print();
return -1;
}
memset(key, 0, sizeof(*key));
memcpy(key->public_key.t, *in, sizeof(key->public_key.t));
*in += sizeof(key->public_key.t);
*inlen -= sizeof(key->public_key.t);
memcpy(key->public_key.rho, *in, sizeof(key->public_key.rho));
*in += sizeof(key->public_key.rho);
*inlen -= sizeof(key->public_key.rho);
return 1;
}
int kyber_cpa_private_key_to_bytes(const KYBER_CPA_KEY *key, uint8_t **out, size_t *outlen)
{
if (!key || !outlen) {
error_print();
return -1;
}
if (kyber_cpa_public_key_to_bytes(key, out, outlen) != 1) {
error_print();
return -1;
}
if (out && *out) {
memcpy(*out, key->s, sizeof(key->s));
}
*outlen += sizeof(key->s);
return 1;
}
int kyber_cpa_private_key_from_bytes(KYBER_CPA_KEY *key, const uint8_t **in, size_t *inlen)
{
if (!key || !in || !(*in) || !inlen) {
error_print();
return -1;
}
memset(key, 0, sizeof(*key));
if (kyber_cpa_public_key_from_bytes(key, in, inlen) != 1) {
error_print();
return -1;
}
if (*inlen < sizeof(key->s)) {
error_print();
return -1;
}
memcpy(key->s, *in, sizeof(key->s));
*in += sizeof(key->s);
*inlen -= sizeof(key->s);
return 1;
}
int kyber_cpa_public_key_print(FILE *fp, int fmt, int ind, const char *label, const KYBER_CPA_KEY *key)
{
int i;
format_print(fp, fmt, ind, "%s\n", label);
ind += 4;
for (i = 0; i < KYBER_K; i++) {
format_print(fp, fmt, ind, "ntt(t[%d])", i);
format_bytes(fp, fmt, 0, "", key->public_key.t[i], 384);
}
format_bytes(fp, fmt, ind, "rho", key->public_key.rho, 32);
return 1;
}
int kyber_cpa_private_key_print(FILE *fp, int fmt, int ind, const char *label, const KYBER_CPA_KEY *key)
{
int i;
format_print(fp, fmt, ind, "%s\n", label);
ind += 4;
kyber_cpa_public_key_print(fp, fmt, ind, "public_key", key);
for (i = 0; i < KYBER_K; i++) {
format_print(fp, fmt, ind, "ntt(s[%d])", i);
format_bytes(fp, fmt, 0, "", key->s[i], 384);
}
return 1;
}
/*
@@ -789,11 +788,45 @@ int kyber_cpa_keygen(KYBER_CPA_PUBLIC_KEY *pk, KYBER_CPA_PRIVATE_KEY *sk)
*/
int kyber_cpa_ciphertext_to_bytes(const KYBER_CPA_CIPHERTEXT *ciphertext, uint8_t **out, size_t *outlen)
{
if (!ciphertext || !outlen) {
error_print();
return -1;
}
if (out && *out) {
memcpy(*out, ciphertext->c1, sizeof(ciphertext->c1));
*out += sizeof(ciphertext->c1);
memcpy(*out, ciphertext->c2, sizeof(ciphertext->c2));
*out += sizeof(ciphertext->c2);
}
*outlen += sizeof(ciphertext->c1);
*outlen += sizeof(ciphertext->c2);
return 1;
}
int kyber_cpa_ciphertext_from_bytes(KYBER_CPA_CIPHERTEXT *ciphertext, const uint8_t **in, size_t *inlen)
{
if (!ciphertext || !in || !(*in) || !inlen) {
error_print();
return -1;
}
if (*inlen < sizeof(ciphertext->c1) + sizeof(ciphertext->c2)) {
error_print();
return -1;
}
memcpy(ciphertext->c1, *in, sizeof(ciphertext->c1));
*in += sizeof(ciphertext->c1);
*inlen -= sizeof(ciphertext->c1);
memcpy(ciphertext->c2, *in, sizeof(ciphertext->c2));
*in += sizeof(ciphertext->c2);
*inlen -= sizeof(ciphertext->c2);
return 1;
}
int kyber_cpa_ciphertext_print(FILE *fp, int fmt, int ind, const char *label, const KYBER_CPA_CIPHERTEXT *c)
{
int i;
format_print(fp, fmt, ind, "%s\n", label);
ind += 4;
for (i = 0; i < KYBER_K; i++) {
@@ -804,44 +837,7 @@ int kyber_cpa_ciphertext_print(FILE *fp, int fmt, int ind, const char *label, co
return 1;
}
int kyber_ciphertext_print(FILE *fp, int fmt, int ind, const char *label, const KYBER_CIPHERTEXT *c)
{
return kyber_cpa_ciphertext_print(fp, fmt, ind, label, c);
}
int kyber_cpa_public_key_print(FILE *fp, int fmt, int ind, const char *label, const KYBER_CPA_PUBLIC_KEY *pk)
{
int i;
format_print(fp, fmt, ind, "%s\n", label);
ind += 4;
for (i = 0; i < KYBER_K; i++) {
format_print(fp, fmt, ind, "ntt(t[%d])", i);
format_bytes(fp, fmt, 0, "", pk->t[i], 384);
}
format_bytes(fp, fmt, ind, "rho", pk->rho, 32);
return 1;
}
int kyber_cpa_private_key_print(FILE *fp, int fmt, int ind, const char *label, const KYBER_CPA_PRIVATE_KEY *sk)
{
int i;
format_print(fp, fmt, ind, "%s\n", label);
ind += 4;
kyber_cpa_public_key_print(fp, fmt, ind, "public_key", &sk->public_key);
for (i = 0; i < KYBER_K; i++) {
format_print(fp, fmt, ind, "ntt(s[%d])", i);
format_bytes(fp, fmt, 0, "", sk->s[i], 384);
}
return 1;
}
int kyber_cpa_encrypt(const KYBER_CPA_PUBLIC_KEY *pk, const uint8_t in[32],
int kyber_cpa_encrypt(const KYBER_CPA_KEY *key, const uint8_t in[32],
const uint8_t rand[32], KYBER_CPA_CIPHERTEXT *out)
{
kyber_poly_t A[KYBER_K][KYBER_K];
@@ -857,13 +853,13 @@ int kyber_cpa_encrypt(const KYBER_CPA_PUBLIC_KEY *pk, const uint8_t in[32],
// tHat = Decode12(pk)
for (i = 0; i < KYBER_K; i++) {
kyber_poly_decode12(t[i], pk->t[i]);
kyber_poly_decode12(t[i], key->public_key.t[i]);
}
// AHat^T[i][j] = Parse(XOR(rho, i, j))
for (i = 0; i < KYBER_K; i++) {
for (j = 0; j < KYBER_K; j++) {
kyber_poly_uniform_sample(A[i][j], pk->rho, i, j);
kyber_poly_uniform_sample(A[i][j], key->public_key.rho, i, j);
}
}
@@ -955,7 +951,7 @@ int kyber_cpa_encrypt(const KYBER_CPA_PUBLIC_KEY *pk, const uint8_t in[32],
return 1;
}
int kyber_cpa_decrypt(const KYBER_CPA_PRIVATE_KEY *sk, const KYBER_CPA_CIPHERTEXT *in, uint8_t out[32])
int kyber_cpa_decrypt(const KYBER_CPA_KEY *key, const KYBER_CPA_CIPHERTEXT *in, uint8_t out[32])
{
kyber_poly_t u[KYBER_K];
kyber_poly_t s[KYBER_K];
@@ -976,10 +972,9 @@ int kyber_cpa_decrypt(const KYBER_CPA_PRIVATE_KEY *sk, const KYBER_CPA_CIPHERTEX
kyber_poly_decompress(v, 4, v);
// s = Decode_12(sk)
for (i = 0; i < KYBER_K; i++) {
kyber_poly_decode12(s[i], sk->s[i]);
kyber_poly_decode12(s[i], key->s[i]);
}
// m = Encode_1(Compress(v - NTT^-1(s^T * NTT(u)), 1))
@@ -1004,53 +999,70 @@ int kyber_cpa_decrypt(const KYBER_CPA_PRIVATE_KEY *sk, const KYBER_CPA_CIPHERTEX
}
int kyber_key_generate(KYBER_PRIVATE_KEY *sk)
int kyber_key_generate_ex(KYBER_KEY *key, const uint8_t random[32])
{
KYBER_PUBLIC_KEY pk;
if (kyber_keygen(&pk, sk) != 1) {
if (!key) {
error_print();
return -1;
}
if (kyber_cpa_key_generate_ex(&key->cpa_key, random) != 1) {
error_print();
return -1;
}
kyber_h_hash((uint8_t *)key, sizeof(KYBER_CPA_PUBLIC_KEY), key->pk_hash);
if (rand_bytes(key->z, 32) != 1) {
kyber_cpa_key_cleanup(&key->cpa_key);
error_print();
return -1;
}
return 1;
}
void kyber_key_cleanup(KYBER_PRIVATE_KEY *key)
void kyber_key_cleanup(KYBER_KEY *key)
{
gmssl_secure_clear(key, sizeof(*key));
if (key) {
kyber_cpa_key_cleanup(&key->cpa_key);
gmssl_secure_clear(key->z, sizeof(key->z));
}
}
int kyber_public_key_to_bytes(const KYBER_PRIVATE_KEY *key, uint8_t **out, size_t *outlen)
{
return kyber_cpa_public_key_to_bytes(&key->pk, out, outlen);
}
int kyber_public_key_from_bytes(KYBER_PRIVATE_KEY *key, const uint8_t **in, size_t *inlen)
{
memset(key, 0, sizeof(*key));
return kyber_cpa_public_key_from_bytes(&key->pk, in, inlen);
}
/*
165 typedef struct {
166 KYBER_CPA_PUBLIC_KEY pk;
167 KYBER_CPA_PRIVATE_KEY sk;
168 uint8_t pk_hash[32];
169 uint8_t z[32];
170 } KYBER_PRIVATE_KEY;
*/
int kyber_private_key_to_bytes(const KYBER_PRIVATE_KEY *key, uint8_t **out, size_t *outlen)
int kyber_public_key_to_bytes(const KYBER_KEY *key, uint8_t **out, size_t *outlen)
{
if (!key || !outlen) {
error_print();
return -1;
}
if (kyber_cpa_public_key_to_bytes(&key->pk, out, outlen) != 1) {
if (kyber_cpa_public_key_to_bytes(&key->cpa_key, out, outlen) != 1) {
error_print();
return -1;
}
if (kyber_cpa_private_key_to_bytes(&key->sk, out, outlen) != 1) {
return 1;
}
int kyber_public_key_from_bytes(KYBER_KEY *key, const uint8_t **in, size_t *inlen)
{
if (!key || !in || !(*in) || !inlen) {
error_print();
return -1;
}
memset(key, 0, sizeof(*key));
if (kyber_cpa_public_key_from_bytes(&key->cpa_key, in, inlen) != 1) {
error_print();
return -1;
}
return 1;
}
int kyber_private_key_to_bytes(const KYBER_KEY *key, uint8_t **out, size_t *outlen)
{
if (!key || !outlen) {
error_print();
return -1;
}
if (kyber_cpa_private_key_to_bytes(&key->cpa_key, out, outlen) != 1) {
error_print();
return -1;
}
@@ -1065,21 +1077,19 @@ int kyber_private_key_to_bytes(const KYBER_PRIVATE_KEY *key, uint8_t **out, size
return 1;
}
int kyber_private_key_from_bytes(KYBER_PRIVATE_KEY *key, const uint8_t **in, size_t *inlen)
int kyber_private_key_from_bytes(KYBER_KEY *key, const uint8_t **in, size_t *inlen)
{
if (!key || !in || !(*in) || !inlen) {
error_print();
return -1;
}
if (*inlen < sizeof(*key)) {
memset(key, 0, sizeof(*key));
if (kyber_cpa_private_key_from_bytes(&key->cpa_key, in, inlen) != 1) {
error_print();
return -1;
}
if (kyber_cpa_public_key_from_bytes(&key->pk, in, inlen) != 1) {
error_print();
return -1;
}
if (kyber_cpa_private_key_from_bytes(&key->sk, in, inlen) != 1) {
if (*inlen < sizeof(key->pk_hash) + sizeof(key->z)) {
error_print();
return -1;
}
@@ -1089,49 +1099,24 @@ int kyber_private_key_from_bytes(KYBER_PRIVATE_KEY *key, const uint8_t **in, siz
memcpy(key->z, *in, sizeof(key->z));
*in += sizeof(key->z);
*inlen -= sizeof(key->z);
return 1;
}
int kyber_keygen(KYBER_PUBLIC_KEY *pk, KYBER_PRIVATE_KEY *sk)
int kyber_public_key_print(FILE *fp, int fmt, int ind, const char *label, const KYBER_KEY *key)
{
if (kyber_cpa_keygen(pk, &sk->sk) != 1) {
error_print();
return -1;
}
memcpy(&sk->pk, pk, sizeof(KYBER_PUBLIC_KEY));
kyber_h_hash((uint8_t *)pk, sizeof(KYBER_CPA_PUBLIC_KEY), sk->pk_hash);
if (rand_bytes(sk->z, 32) != 1) {
error_print();
return -1;
}
return 1;
return kyber_cpa_public_key_print(fp, fmt, ind, label, &key->cpa_key);
}
int kyber_private_key_print(FILE *fp, int fmt, int ind, const char *label, const KYBER_PRIVATE_KEY *sk)
int kyber_private_key_print(FILE *fp, int fmt, int ind, const char *label, const KYBER_KEY *key)
{
format_print(fp, fmt, ind, "%s\n", label);
kyber_cpa_private_key_print(fp, fmt, ind, label, &key->cpa_key);
ind += 4;
kyber_cpa_private_key_print(fp, fmt, ind, "privateKey", &sk->sk);
kyber_cpa_public_key_print(fp, fmt, ind, "publicKey", &sk->pk);
format_bytes(fp, fmt, ind, "publicKeyHash", sk->pk_hash, 32);
format_bytes(fp, fmt, ind, "z", sk->z, 32);
format_bytes(fp, fmt, ind, "publicKeyHash", key->pk_hash, 32);
format_bytes(fp, fmt, ind, "z", key->z, 32);
return 1;
}
int kyber_public_key_print(FILE *fp, int fmt, int ind, const char *label, const KYBER_PRIVATE_KEY *key)
{
return kyber_cpa_public_key_print(fp, fmt, ind, label, &key->pk);
}
int kyber_encap(const KYBER_PUBLIC_KEY *pk, KYBER_CIPHERTEXT *c, uint8_t K[32])
int kyber_encap(const KYBER_KEY *key, KYBER_CIPHERTEXT *c, uint8_t K[32])
{
uint8_t m_h[64];
uint8_t K_r[64];
@@ -1150,13 +1135,13 @@ int kyber_encap(const KYBER_PUBLIC_KEY *pk, KYBER_CIPHERTEXT *c, uint8_t K[32])
kyber_h_hash(m, 32, m);
// h = H(pk)
kyber_h_hash((const uint8_t *)pk, sizeof(KYBER_PUBLIC_KEY), h);
kyber_h_hash((const uint8_t *)key, sizeof(KYBER_PUBLIC_KEY), h);
// (K_, r) = G(m || H(pk))
kyber_g_hash(m_h, 64, K_r);
// c = Kyber.CPA.Enc(pk, m, r)
if (kyber_cpa_encrypt(pk, m, r, c) != 1) {
if (kyber_cpa_encrypt(&key->cpa_key, m, r, c) != 1) {
error_print();
return -1;
}
@@ -1172,7 +1157,7 @@ int kyber_encap(const KYBER_PUBLIC_KEY *pk, KYBER_CIPHERTEXT *c, uint8_t K[32])
return 1;
}
int kyber_decap(const KYBER_PRIVATE_KEY *sk, const KYBER_CIPHERTEXT *c, uint8_t K[32])
int kyber_decap(const KYBER_KEY *key, const KYBER_CIPHERTEXT *c, uint8_t K[32])
{
uint8_t m_h[64];
uint8_t K_r[64];
@@ -1185,19 +1170,19 @@ int kyber_decap(const KYBER_PRIVATE_KEY *sk, const KYBER_CIPHERTEXT *c, uint8_t
// m' = Dec(sk, c)
if (kyber_cpa_decrypt(&sk->sk, c, m) != 1) {
if (kyber_cpa_decrypt(&key->cpa_key, c, m) != 1) {
error_print();
return -1;
}
// h = H(pk)
memcpy(h, sk->pk_hash, 32);
memcpy(h, key->pk_hash, 32);
// (K_, r) = G(m || h)
kyber_g_hash(m_h, 64, K_r);
// c_ = CPA.Enc(pk, m, r)
if (kyber_cpa_encrypt(&sk->pk, m, r, &c_) != 1) {
if (kyber_cpa_encrypt(&key->cpa_key, m, r, &c_) != 1) {
gmssl_secure_clear(m_h, sizeof(m_h));
gmssl_secure_clear(K_r, sizeof(K_r));
error_print();
@@ -1212,7 +1197,7 @@ int kyber_decap(const KYBER_PRIVATE_KEY *sk, const KYBER_CIPHERTEXT *c, uint8_t
kyber_kdf(K_r, K);
} else {
error_print();
memcpy(K_r, sk->z, 32); // TODO: const time
memcpy(K_r, key->z, 32); // TODO: const time
kyber_kdf(K_r, K);
}
@@ -1221,49 +1206,25 @@ int kyber_decap(const KYBER_PRIVATE_KEY *sk, const KYBER_CIPHERTEXT *c, uint8_t
return 1;
}
int kyber_cpa_ciphertext_to_bytes(const KYBER_CPA_CIPHERTEXT *ciphertext, uint8_t **out, size_t *outlen)
{
if (!ciphertext || !outlen) {
error_print();
return -1;
}
if (out && *out) {
memcpy(*out, ciphertext->c1, sizeof(ciphertext->c1));
*out += sizeof(ciphertext->c1);
memcpy(*out, ciphertext->c2, sizeof(ciphertext->c2));
*out += sizeof(ciphertext->c2);
}
*outlen += sizeof(ciphertext->c1);
*outlen += sizeof(ciphertext->c2);
return 1;
}
int kyber_cpa_ciphertext_from_bytes(KYBER_CPA_CIPHERTEXT *ciphertext, const uint8_t **in, size_t *inlen)
{
if (!ciphertext || !in || !(*in) || !inlen) {
error_print();
return -1;
}
if (*inlen < sizeof(ciphertext->c1) + sizeof(ciphertext->c2)) {
error_print();
return -1;
}
memcpy(ciphertext->c1, *in, sizeof(ciphertext->c1));
*in += sizeof(ciphertext->c1);
*inlen -= sizeof(ciphertext->c1);
memcpy(ciphertext->c2, *in, sizeof(ciphertext->c2));
*in += sizeof(ciphertext->c2);
*inlen -= sizeof(ciphertext->c2);
return 1;
}
int kyber_ciphertext_to_bytes(const KYBER_CIPHERTEXT *ciphertext, uint8_t **out, size_t *outlen)
{
return kyber_cpa_ciphertext_to_bytes(ciphertext, out, outlen);
if (kyber_cpa_ciphertext_to_bytes(ciphertext, out, outlen) != 1) {
error_print();
return -1;
}
return 1;
}
int kyber_ciphertext_from_bytes(KYBER_CIPHERTEXT *ciphertext, const uint8_t **in, size_t *inlen)
{
return kyber_cpa_ciphertext_from_bytes(ciphertext, in, inlen);
if (kyber_cpa_ciphertext_from_bytes(ciphertext, in, inlen) != 1) {
error_print();
return -1;
}
return 1;
}
int kyber_ciphertext_print(FILE *fp, int fmt, int ind, const char *label, const KYBER_CIPHERTEXT *c)
{
return kyber_cpa_ciphertext_print(fp, fmt, ind, label, c);
}