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zen_qp.c
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zen_qp.c
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/* This file is part of Zenroom (https://zenroom.dyne.org)
*
* Copyright (C) 2017-2020 Dyne.org foundation
* designed, written and maintained by Alberto Lerda <[email protected]>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*
*/
#include <lua.h>
#include <lualib.h>
#include <lauxlib.h>
#include <zenroom.h>
#include <zen_error.h>
#include <zen_memory.h>
#include <lua_functions.h>
#include <zen_octet.h>
#include <zen_error.h>
/*
Quantum proof dilithium digital signature
*/
#define PQCLEAN_DILITHIUM2_CLEAN_CRYPTO_PUBLICKEYBYTES 1312
#define PQCLEAN_DILITHIUM2_CLEAN_CRYPTO_SECRETKEYBYTES 2528
#define PQCLEAN_DILITHIUM2_CLEAN_CRYPTO_BYTES 2420
#define PQCLEAN_DILITHIUM2_CLEAN_CRYPTO_ALGNAME "Dilithium2"
extern int PQCLEAN_DILITHIUM2_CLEAN_crypto_sign_keypair(uint8_t *pk, uint8_t *sk);
extern int PQCLEAN_DILITHIUM2_CLEAN_crypto_pub_gen(uint8_t *pk, uint8_t *sk);
extern int PQCLEAN_DILITHIUM2_CLEAN_crypto_sign_signature(
uint8_t *sig, size_t *siglen,
const uint8_t *m, size_t mlen, const uint8_t *sk);
extern int PQCLEAN_DILITHIUM2_CLEAN_crypto_sign_verify(
const uint8_t *sig, size_t siglen,
const uint8_t *m, size_t mlen, const uint8_t *pk);
extern int PQCLEAN_DILITHIUM2_CLEAN_crypto_sign(
uint8_t *sm, size_t *smlen,
const uint8_t *m, size_t mlen, const uint8_t *sk);
extern int PQCLEAN_DILITHIUM2_CLEAN_crypto_sign_open(
uint8_t *m, size_t *mlen,
const uint8_t *sm, size_t smlen, const uint8_t *pk);
/*
Quantum proof kyber kem/cipher
*/
#define PQCLEAN_KYBER512_CLEAN_CRYPTO_SECRETKEYBYTES 1632
#define PQCLEAN_KYBER512_CLEAN_CRYPTO_PUBLICKEYBYTES 800
#define PQCLEAN_KYBER512_CLEAN_CRYPTO_CIPHERTEXTBYTES 768
#define PQCLEAN_KYBER512_CLEAN_CRYPTO_BYTES 32
#define PQCLEAN_KYBER512_CLEAN_CRYPTO_ALGNAME "Kyber512"
#define KYBER_SSBYTES 32 /* size in bytes of shared key */
extern int PQCLEAN_KYBER512_CLEAN_crypto_kem_keypair(uint8_t *pk, uint8_t *sk);
extern int PQCLEAN_KYBER512_CLEAN_crypto_pub_gen(uint8_t *pk, uint8_t *sk);
extern int PQCLEAN_KYBER512_CLEAN_crypto_kem_enc(uint8_t *ct, uint8_t *ss, const uint8_t *pk);
extern int PQCLEAN_KYBER512_CLEAN_crypto_kem_dec(uint8_t *ss, const uint8_t *ct, const uint8_t *sk);
/*
Quantum proof ml-kem-512
*/
#define pqcrystals_ml_kem_512_ipd_ref_SECRETKEYBYTES 1632
#define pqcrystals_ml_kem_512_ipd_ref_PUBLICKEYBYTES 800
#define pqcrystals_ml_kem_512_ipd_ref_CIPHERTEXTBYTES 768
#define pqcrystals_ml_kem_512_ipd_ref_KEYPAIRCOINBYTES 64
#define pqcrystals_ml_kem_512_ipd_ref_ENCCOINBYTES 32
#define pqcrystals_ml_kem_512_ipd_ref_BYTES 32
#define pqcrystal_mlkem_512_INDCPA_SECRETKEYBYTES 768
extern int pqcrystals_ml_kem_512_ipd_ref_keypair_derand(uint8_t *pk, uint8_t *sk, const uint8_t *coins);
extern int pqcrystals_ml_kem_512_ipd_ref_keypair(uint8_t *pk, uint8_t *sk);
extern int pqcrystals_ml_kem_512_ipd_ref_enc_derand(uint8_t *ct, uint8_t *ss, const uint8_t *pk, const uint8_t *coins);
extern int pqcrystals_ml_kem_512_ipd_ref_enc(uint8_t *ct, uint8_t *ss, const uint8_t *pk);
extern int pqcrystals_ml_kem_512_ipd_ref_dec(uint8_t *ss, const uint8_t *ct, const uint8_t *sk);
/*
Quantum proof Streamlined NTRU Prime kem/cipher
*/
#define PQCLEAN_SNTRUP761_CLEAN_CRYPTO_SECRETKEYBYTES 1763
#define PQCLEAN_SNTRUP761_CLEAN_CRYPTO_PUBLICKEYBYTES 1158
#define PQCLEAN_SNTRUP761_CLEAN_CRYPTO_CIPHERTEXTBYTES 1039
#define PQCLEAN_SNTRUP761_CLEAN_CRYPTO_BYTES 32
#define PQCLEAN_SNTRUP761_CLEAN_CRYPTO_ALGNAME "sntrup761"
extern int PQCLEAN_SNTRUP761_CLEAN_crypto_kem_keypair(uint8_t *pk, uint8_t *sk);
extern int PQCLEAN_SNTRUP761_CLEAN_crypto_kem_pubgen(uint8_t *pk, uint8_t *sk);
extern int PQCLEAN_SNTRUP761_CLEAN_crypto_kem_enc(uint8_t *ct, uint8_t *ss, const uint8_t *pk);
extern int PQCLEAN_SNTRUP761_CLEAN_crypto_kem_dec(uint8_t *ss, const uint8_t *ct, const uint8_t *sk);
/*
Quantum proof ML-DSA-44 with pqcrystals dilithium2
*/
#define pqcrystals_ml_dsa_44_ipd_PUBLICKEYBYTES 1312
#define pqcrystals_ml_dsa_44_ipd_SECRETKEYBYTES 2560
#define pqcrystals_ml_dsa_44_ipd_BYTES 2420
extern int pqcrystals_ml_dsa_44_ipd_zen_keypair(uint8_t *pk, uint8_t *sk, const uint8_t *randbytes);
extern int pqcrystals_ml_dsa_44_ipd_zen_signature(uint8_t *sig, size_t *siglen, const uint8_t *m, size_t mlen, const uint8_t *sk, const uint8_t *randbytes);
extern int pqcrystals_ml_dsa_44_ipd_ref_verify(const uint8_t *sig, size_t siglen, const uint8_t *m, size_t mlen, const uint8_t *pk);
extern int pqcrystals_ml_dsa_44_ipd_zen_pub_gen(uint8_t *pk, uint8_t *sk);
/*#######################################*/
/* Dilithium 2 */
/*#######################################*/
static int qp_signature_keygen(lua_State *L) {
BEGIN();
char *failed_msg = NULL;
lua_createtable(L, 0, 2);
octet *private = o_new(L, PQCLEAN_DILITHIUM2_CLEAN_CRYPTO_SECRETKEYBYTES);
if(private == NULL) {
failed_msg = "Could not allocate private key";
goto end;
}
lua_setfield(L, -2, "private");
octet *public = o_new(L, PQCLEAN_DILITHIUM2_CLEAN_CRYPTO_PUBLICKEYBYTES);
if(public == NULL) {
failed_msg = "Could not allocate public key";
goto end;
}
lua_setfield(L, -2, "public");
PQCLEAN_DILITHIUM2_CLEAN_crypto_sign_keypair((unsigned char*)public->val,
(unsigned char*)private->val);
public->len = PQCLEAN_DILITHIUM2_CLEAN_CRYPTO_PUBLICKEYBYTES;
private->len = PQCLEAN_DILITHIUM2_CLEAN_CRYPTO_SECRETKEYBYTES;
end:
if(failed_msg) {
THROW(failed_msg);
}
END(1);
}
static int qp_signature_pubgen(lua_State *L) {
BEGIN();
char *failed_msg = NULL;
octet *sk = NULL, *pk = NULL;
sk = o_arg(L, 1);
if(sk == NULL) {
failed_msg = "failed to allocate space for secret key";
goto end;
}
pk = o_new(L, PQCLEAN_DILITHIUM2_CLEAN_CRYPTO_PUBLICKEYBYTES);
if(pk == NULL) {
failed_msg = "failed to allocate space for public key";
goto end;
}
PQCLEAN_DILITHIUM2_CLEAN_crypto_pub_gen((unsigned char*)pk->val,
(unsigned char*)sk->val);
pk->len = PQCLEAN_DILITHIUM2_CLEAN_CRYPTO_PUBLICKEYBYTES;
end:
o_free(L,sk);
if(failed_msg != NULL) {
THROW(failed_msg);
}
END(1);
}
// checks the singature length
static int qp_signature_pubcheck(lua_State *L) {
BEGIN();
octet *pk = o_arg(L, 1);
if(pk == NULL) {
THROW("failed to allocate space for public key");
} else {
if(pk->len == PQCLEAN_DILITHIUM2_CLEAN_CRYPTO_PUBLICKEYBYTES)
lua_pushboolean(L, 1);
else
lua_pushboolean(L, 0);
o_free(L, pk);
}
END(1);
}
static int qp_sign(lua_State *L) {
BEGIN();
char *failed_msg = NULL;
octet *sk = NULL, *m = NULL;
sk = o_arg(L, 1);
if(sk == NULL) {
failed_msg = "failed to allocate space for secret key";
goto end;
}
m = o_arg(L, 2);
if(m == NULL) {
failed_msg = "failed to allocate space for message";
goto end;
}
if(sk->len != PQCLEAN_DILITHIUM2_CLEAN_CRYPTO_SECRETKEYBYTES) {
failed_msg = "wrong secret key length";
goto end;
}
octet *sig = o_new(L, PQCLEAN_DILITHIUM2_CLEAN_CRYPTO_BYTES);
if(sig == NULL) {
failed_msg = "failed to allocate space for signature";
goto end;
}
if(PQCLEAN_DILITHIUM2_CLEAN_crypto_sign_signature((unsigned char*)sig->val,
(size_t*)&sig->len,
(unsigned char*)m->val, m->len,
(unsigned char*)sk->val)
&& sig->len > 0) {
failed_msg = "error in the signature";
goto end;
}
end:
o_free(L,m);
o_free(L,sk);
if(failed_msg != NULL) {
THROW(failed_msg);
}
END(1);
}
// generate an octet which is signature+message
static int qp_signed_message(lua_State *L) {
BEGIN();
char *failed_msg = NULL;
octet *sk = NULL, *m = NULL;
sk = o_arg(L, 1);
if(sk == NULL) {
failed_msg = "failed to allocate space for secret key";
goto end;
}
m = o_arg(L, 2);
if(m == NULL) {
failed_msg = "failed to allocate space for message";
goto end;
}
if(sk->len != PQCLEAN_DILITHIUM2_CLEAN_CRYPTO_SECRETKEYBYTES) {
failed_msg = "invalid size for secret key";
goto end;
}
octet *sig = o_new(L, PQCLEAN_DILITHIUM2_CLEAN_CRYPTO_BYTES+m->len);
if(sig == NULL) {
failed_msg = "could not allocate space for signature";
goto end;
}
if(PQCLEAN_DILITHIUM2_CLEAN_crypto_sign((unsigned char*)sig->val,
(size_t*)&sig->len,
(unsigned char*)m->val, m->len,
(unsigned char*)sk->val)
&& sig->len > 0) {
failed_msg = "error in the signature";
goto end;
}
end:
o_free(L,m);
o_free(L,sk);
if(failed_msg != NULL) {
THROW(failed_msg);
}
END(1);
}
static int qp_verified_message(lua_State *L) {
BEGIN();
char *failed_msg = NULL;
octet *pk = NULL, *sm = NULL;
pk = o_arg(L, 1);
if(pk == NULL) {
failed_msg = "Could not allocate space for public key";
goto end;
}
sm = o_arg(L, 2);
if(sm == NULL) {
failed_msg = "Could not allocate space for secret message";
goto end;
}
if(pk->len != PQCLEAN_DILITHIUM2_CLEAN_CRYPTO_PUBLICKEYBYTES) {
failed_msg = "invalid size for public key";
goto end;
}
octet *msg = o_new(L, sm->len);
if(msg == NULL) {
failed_msg = "Could not allocate space for message";
goto end;
}
int result = PQCLEAN_DILITHIUM2_CLEAN_crypto_sign_open((unsigned char*)msg->val,
(size_t*)&msg->len,
(unsigned char*)sm->val, sm->len,
(unsigned char*)pk->val) == 0
&& msg->len > 0;
if(!result) {
lua_pushboolean(L, 0);
}
end:
o_free(L, sm);
o_free(L, pk);
if(failed_msg) {
THROW(failed_msg);
}
END(1);
}
static int qp_verify(lua_State *L) {
BEGIN();
char *failed_msg = NULL;
octet *pk = NULL, *sig = NULL, *m = NULL;
pk = o_arg(L, 1);
if(pk == NULL) {
failed_msg = "Could not allocate space for public key";
goto end;
}
sig = o_arg(L, 2);
if(sig == NULL) {
failed_msg = "Could not allocate space for signature";
goto end;
}
m = o_arg(L, 3);
if(m == NULL) {
failed_msg = "Could not allocate space for message";
goto end;
}
if(pk->len != PQCLEAN_DILITHIUM2_CLEAN_CRYPTO_PUBLICKEYBYTES) {
failed_msg = "invalid size for public key";
goto end;
}
int result = PQCLEAN_DILITHIUM2_CLEAN_crypto_sign_verify((unsigned char*)sig->val,
(size_t)sig->len,
(unsigned char*)m->val, m->len,
(unsigned char*)pk->val);
lua_pushboolean(L, result == 0);
end:
o_free(L, m);
o_free(L, sig);
o_free(L, pk);
if(failed_msg) {
THROW(failed_msg);
}
END(1);
}
static int qp_signature_len(lua_State *L){
BEGIN();
lua_pushinteger(L, PQCLEAN_DILITHIUM2_CLEAN_CRYPTO_BYTES);
END(1);
}
static int qp_signature_check(lua_State *L){
BEGIN();
char *failed_msg = NULL;
octet *sign = o_arg(L, 1);
if(sign == NULL) {
failed_msg = "Cuold not allocate signature";
goto end;
}
if(sign->len == PQCLEAN_DILITHIUM2_CLEAN_CRYPTO_BYTES)
lua_pushboolean(L, 1);
else
lua_pushboolean(L, 0);
end:
o_free(L, sign);
if(failed_msg) {
THROW(failed_msg);
}
END(1);
}
/*#######################################*/
/* Kyber 512 */
/*#######################################*/
static int qp_kem_keygen(lua_State *L) {
BEGIN();
lua_createtable(L, 0, 2);
octet *private = o_new(L, PQCLEAN_KYBER512_CLEAN_CRYPTO_SECRETKEYBYTES); SAFE(private);
lua_setfield(L, -2, "private");
octet *public = o_new(L, PQCLEAN_KYBER512_CLEAN_CRYPTO_PUBLICKEYBYTES); SAFE(public);
lua_setfield(L, -2, "public");
PQCLEAN_KYBER512_CLEAN_crypto_kem_keypair((unsigned char*)public->val, (unsigned char*)private->val);
public->len = PQCLEAN_KYBER512_CLEAN_CRYPTO_PUBLICKEYBYTES;
private->len = PQCLEAN_KYBER512_CLEAN_CRYPTO_SECRETKEYBYTES;
END(1);
}
static int qp_kem_pubgen(lua_State *L) {
BEGIN();
char *failed_msg = NULL;
octet *sk = NULL, *pk = NULL;
sk = o_arg(L, 1);
if(sk == NULL) {
failed_msg = "Could not allocate secret key";
goto end;
}
pk = o_new(L, PQCLEAN_KYBER512_CLEAN_CRYPTO_PUBLICKEYBYTES);
if(pk == NULL) {
failed_msg = "Could not allocate private key";
goto end;
}
PQCLEAN_KYBER512_CLEAN_crypto_pub_gen((unsigned char*)pk->val,
(unsigned char*)sk->val);
pk->len = PQCLEAN_KYBER512_CLEAN_CRYPTO_PUBLICKEYBYTES;
end:
o_free(L, sk);
if(failed_msg) {
THROW(failed_msg);
}
END(1);
}
// checks the public key length
static int qp_kem_pubcheck(lua_State *L) {
BEGIN();
octet *pk = o_arg(L, 1);
if(pk == NULL) {
THROW("Could not allocate public key");
} else {
if(pk->len == PQCLEAN_KYBER512_CLEAN_CRYPTO_PUBLICKEYBYTES)
lua_pushboolean(L, 1);
else
lua_pushboolean(L, 0);
o_free(L,pk);
}
END(1);
}
// checks the shared secret length
static int qp_kem_sscheck(lua_State *L) {
BEGIN();
octet *ss = o_arg(L, 1);
if(ss == NULL) {
THROW("Could not allocate kem secret");
} else {
if(ss->len == KYBER_SSBYTES)
lua_pushboolean(L, 1);
else
lua_pushboolean(L, 0);
o_free(L, ss);
}
END(1);
}
// check the ciphertext length
static int qp_kem_ctcheck(lua_State *L) {
BEGIN();
octet *ct = o_arg(L, 1);
if(ct == NULL) {
THROW("Could not allocate kem ciphertext");
} else {
if(ct->len == PQCLEAN_KYBER512_CLEAN_CRYPTO_CIPHERTEXTBYTES)
lua_pushboolean(L, 1);
else
lua_pushboolean(L, 0);
o_free(L, ct);
}
END(1);
}
static int qp_enc(lua_State *L) {
BEGIN();
char *failed_msg = NULL;
octet *pk = NULL, *ss = NULL, *ct = NULL;
pk = o_arg(L, 1);
if(pk == NULL) {
failed_msg = "Cuold not allocate public key";
goto end;
}
if(pk->len != PQCLEAN_KYBER512_CLEAN_CRYPTO_PUBLICKEYBYTES) {
failed_msg = "invalid size for public key";
goto end;
}
lua_createtable(L, 0, 2);
ss = o_new(L, KYBER_SSBYTES);
if(ss == NULL) {
failed_msg = "Could not allocate kem secret";
goto end;
}
lua_setfield(L, -2, "secret"); // shared secret
ct = o_new(L, PQCLEAN_KYBER512_CLEAN_CRYPTO_CIPHERTEXTBYTES);
if(ct == NULL) {
failed_msg = "Could not allocate kem ciphertext";
goto end;
}
lua_setfield(L, -2, "cipher");
if(PQCLEAN_KYBER512_CLEAN_crypto_kem_enc((unsigned char*)ct->val,
(unsigned char*)ss->val,
(unsigned char*)pk->val)) {
failed_msg = "error in the creation of the shared secret";
goto end;
}
ss->len = KYBER_SSBYTES;
ct->len = PQCLEAN_KYBER512_CLEAN_CRYPTO_CIPHERTEXTBYTES;
end:
o_free(L,pk);
if(failed_msg) {
THROW(failed_msg);
}
END(1);
}
static int qp_dec(lua_State *L) {
BEGIN();
char *failed_msg = NULL;
octet *sk = NULL, *ct = NULL;
sk = o_arg(L, 1);
ct = o_arg(L, 2);
if(sk == NULL || ct == NULL) {
failed_msg = "Could not allocate memory during decription";
goto end;
}
if(sk->len != PQCLEAN_KYBER512_CLEAN_CRYPTO_SECRETKEYBYTES) {
failed_msg = "invalid size for secret key";
goto end;
}
if(ct->len != PQCLEAN_KYBER512_CLEAN_CRYPTO_CIPHERTEXTBYTES) {
failed_msg = "invalid size for ciphertext key";
goto end;
}
octet *ss = o_new(L, KYBER_SSBYTES);
if(ss == NULL) {
failed_msg = "Could not allocate kem secret";
goto end;
}
if(PQCLEAN_KYBER512_CLEAN_crypto_kem_dec((unsigned char*)ss->val,
(unsigned char*)ct->val,
(unsigned char*)sk->val)) {
failed_msg = "error in while deciphering the shared secret";
goto end;
}
ss->len = KYBER_SSBYTES;
end:
o_free(L,sk);
o_free(L,ct);
if(failed_msg) {
THROW(failed_msg);
}
END(1);
}
/*#######################################*/
/* ML-KEM 512 */
/*#######################################*/
static int qp_ml_kem_512_keygen(lua_State *L) {
BEGIN();
char *failed_msg = NULL;
uint8_t randbytes[64];
for(int j=1; j<3; j++){
void *ud =luaL_testudata(L,j,"zenroom.octet");
if (ud){
octet * rnd = (octet*) ud; SAFE(rnd);
if (rnd->len != 32) {
failed_msg = "Wrong seed size";
goto end;
}
for(uint8_t i=0;i<32;i++) randbytes[i+32*(j-1)] = rnd->val[i];
}
else {
Z(L);
for(uint8_t i=0;i<32;i++) randbytes[i+32*(j-1)] = RAND_byte(Z->random_generator);
}
}
lua_createtable(L, 0, 2);
octet *private = o_new(L, pqcrystals_ml_kem_512_ipd_ref_SECRETKEYBYTES); SAFE(private);
lua_setfield(L, -2, "private");
octet *public = o_new(L, pqcrystals_ml_kem_512_ipd_ref_PUBLICKEYBYTES); SAFE(public);
lua_setfield(L, -2, "public");
pqcrystals_ml_kem_512_ipd_ref_keypair_derand((unsigned char*)public->val, (unsigned char*)private->val, randbytes);
public->len = pqcrystals_ml_kem_512_ipd_ref_PUBLICKEYBYTES;
private->len = pqcrystals_ml_kem_512_ipd_ref_SECRETKEYBYTES;
end:
if(failed_msg) {
THROW(failed_msg);
}
END(1);
}
static int qp_ml_kem_512_pubgen(lua_State *L) {
BEGIN();
char *failed_msg = NULL;
octet *sk = NULL, *pk = NULL;
sk = o_arg(L, 1);
if(sk == NULL) {
failed_msg = "Could not allocate secret key";
goto end;
}
pk = o_new(L, pqcrystals_ml_kem_512_ipd_ref_PUBLICKEYBYTES);
if(pk == NULL) {
failed_msg = "Could not allocate private key";
goto end;
}
memcpy((unsigned char*)pk->val,
(unsigned char*)sk->val + pqcrystal_mlkem_512_INDCPA_SECRETKEYBYTES, pqcrystals_ml_kem_512_ipd_ref_PUBLICKEYBYTES);
pk->len = PQCLEAN_KYBER512_CLEAN_CRYPTO_PUBLICKEYBYTES;
end:
o_free(L, sk);
if(failed_msg) {
THROW(failed_msg);
}
END(1);
}
// checks the public key length
static int qp_ml_kem_512_pubcheck(lua_State *L) {
BEGIN();
octet *pk = o_arg(L, 1);
if(pk == NULL) {
THROW("Could not allocate public key");
} else {
if(pk->len == PQCLEAN_KYBER512_CLEAN_CRYPTO_PUBLICKEYBYTES)
lua_pushboolean(L, 1);
else
lua_pushboolean(L, 0);
o_free(L,pk);
}
END(1);
}
// checks the shared secret length
static int qp_ml_kem_512_sscheck(lua_State *L) {
BEGIN();
octet *ss = o_arg(L, 1);
if(ss == NULL) {
THROW("Could not allocate kem secret");
} else {
if(ss->len == pqcrystals_ml_kem_512_ipd_ref_BYTES)
lua_pushboolean(L, 1);
else
lua_pushboolean(L, 0);
o_free(L, ss);
}
END(1);
}
// check the ciphertext length
static int qp_ml_kem_512_ctcheck(lua_State *L) {
BEGIN();
octet *ct = o_arg(L, 1);
if(ct == NULL) {
THROW("Could not allocate kem ciphertext");
} else {
if(ct->len == pqcrystals_ml_kem_512_ipd_ref_CIPHERTEXTBYTES)
lua_pushboolean(L, 1);
else
lua_pushboolean(L, 0);
o_free(L, ct);
}
END(1);
}
static int qp_ml_kem_512_enc(lua_State *L) {
BEGIN();
uint8_t randbytes[32];
char *failed_msg = NULL;
octet *pk = NULL, *ss = NULL, *ct = NULL;
pk = o_arg(L, 1);
void *ud = luaL_testudata(L, 2, "zenroom.octet");
if (ud){
octet *rnd = (octet *) ud; SAFE(rnd);
if (rnd->len != 32) {
failed_msg = "Wrong seed size";
goto end;
}
for(uint8_t i = 0; i < 32; i++) randbytes[i] = rnd -> val[i];
}
else {
Z(L);
for(uint8_t i = 0; i < 32; i++) randbytes[i] = RAND_byte(Z -> random_generator);
}
if(pk == NULL) {
failed_msg = "Cuold not allocate public key";
goto end;
}
if(pk->len != pqcrystals_ml_kem_512_ipd_ref_PUBLICKEYBYTES) {
failed_msg = "invalid size for public key";
goto end;
}
lua_createtable(L, 0, 2);
ss = o_new(L, KYBER_SSBYTES);
if(ss == NULL) {
failed_msg = "Could not allocate kem secret";
goto end;
}
lua_setfield(L, -2, "secret"); // shared secret
ct = o_new(L, pqcrystals_ml_kem_512_ipd_ref_CIPHERTEXTBYTES);
if(ct == NULL) {
failed_msg = "Could not allocate kem ciphertext";
goto end;
}
lua_setfield(L, -2, "cipher");
if(pqcrystals_ml_kem_512_ipd_ref_enc_derand((unsigned char*)ct->val,
(unsigned char*)ss->val,
(unsigned char*)pk->val,
randbytes)) {
failed_msg = "error in the creation of the shared secret";
goto end;
}
ss->len = KYBER_SSBYTES;
ct->len = pqcrystals_ml_kem_512_ipd_ref_CIPHERTEXTBYTES;
end:
o_free(L,pk);
if(failed_msg) {
THROW(failed_msg);
}
END(1);
}
static int qp_ml_kem_512_dec(lua_State *L) {
BEGIN();
char *failed_msg = NULL;
octet *sk = NULL, *ct = NULL;
sk = o_arg(L, 1);
ct = o_arg(L, 2);
if(sk == NULL || ct == NULL) {
failed_msg = "Could not allocate memory during decription";
goto end;
}
if(sk->len != pqcrystals_ml_kem_512_ipd_ref_SECRETKEYBYTES) {
failed_msg = "invalid size for secret key";
goto end;
}
if(ct->len != pqcrystals_ml_kem_512_ipd_ref_CIPHERTEXTBYTES) {
failed_msg = "invalid size for ciphertext key";
goto end;
}
octet *ss = o_new(L, KYBER_SSBYTES);
if(ss == NULL) {
failed_msg = "Could not allocate kem secret";
goto end;
}
if(pqcrystals_ml_kem_512_ipd_ref_dec((unsigned char*)ss->val,
(unsigned char*)ct->val,
(unsigned char*)sk->val)) {
failed_msg = "error in while deciphering the shared secret";
goto end;
}
ss->len = KYBER_SSBYTES;
end:
o_free(L,sk);
o_free(L,ct);
if(failed_msg) {
THROW(failed_msg);
}
END(1);
}
/*#######################################*/
/* SNTRUP 761 */
/*#######################################*/
static int qp_sntrup_kem_keygen(lua_State *L) {
BEGIN();
lua_createtable(L, 0, 2);
octet *private = o_new(L, PQCLEAN_SNTRUP761_CLEAN_CRYPTO_SECRETKEYBYTES);
if(private == NULL) {
THROW("Could not allocate private key");
return 1;
}
lua_setfield(L, -2, "private");
octet *public = o_new(L, PQCLEAN_SNTRUP761_CLEAN_CRYPTO_PUBLICKEYBYTES);
if(private == NULL) {
THROW("Could not allocate public key");
return 1;
}
lua_setfield(L, -2, "public");
PQCLEAN_SNTRUP761_CLEAN_crypto_kem_keypair((unsigned char*)public->val,
(unsigned char*)private->val);
public->len = PQCLEAN_SNTRUP761_CLEAN_CRYPTO_PUBLICKEYBYTES;
private->len = PQCLEAN_SNTRUP761_CLEAN_CRYPTO_SECRETKEYBYTES;
END(1);
}
static int qp_sntrup_kem_pubgen(lua_State *L) {
BEGIN();
char *failed_msg = NULL;
octet *sk = o_arg(L, 1);
if(sk == NULL) {
failed_msg = "Could not allocate secret key";
goto end;
}
octet *pk = o_new(L, PQCLEAN_SNTRUP761_CLEAN_CRYPTO_PUBLICKEYBYTES);
if(pk == NULL) {
failed_msg = "Could not allocate public key";
goto end;
}
PQCLEAN_SNTRUP761_CLEAN_crypto_kem_pubgen((unsigned char*)pk->val,
(unsigned char*)sk->val);
pk->len = PQCLEAN_SNTRUP761_CLEAN_CRYPTO_PUBLICKEYBYTES;
end:
o_free(L, sk);
if(failed_msg) {
THROW(failed_msg);
}
END(1);
}
static int qp_sntrup_kem_pubcheck(lua_State *L) {
BEGIN();
octet *pk = o_arg(L, 1);
if(pk == NULL) {
THROW("Could not allocate public key");
} else {
if(pk->len == PQCLEAN_SNTRUP761_CLEAN_CRYPTO_PUBLICKEYBYTES)
lua_pushboolean(L, 1);
else
lua_pushboolean(L, 0);
o_free(L, pk);
}
END(1);
}
static int qp_sntrup_kem_sscheck(lua_State *L) {
BEGIN();
octet *ss = o_arg(L, 1);
if(ss == NULL) {
THROW("Could not allocate kem secret");
} else {
if(ss->len == PQCLEAN_SNTRUP761_CLEAN_CRYPTO_BYTES)
lua_pushboolean(L, 1);
else
lua_pushboolean(L, 0);
o_free(L,ss);
}
END(1);
}
static int qp_sntrup_kem_ctcheck(lua_State *L) {
BEGIN();
octet *ct = o_arg(L, 1);
if(ct == NULL) {
THROW("Could not allocate kem ciphertext");
} else {
if(ct->len == PQCLEAN_SNTRUP761_CLEAN_CRYPTO_CIPHERTEXTBYTES)
lua_pushboolean(L, 1);
else
lua_pushboolean(L, 0);
o_free(L,ct);
}
END(1);
}
static int qp_sntrup_kem_enc(lua_State *L) {
BEGIN();
char *failed_msg = NULL;
octet *pk = NULL, *ss = NULL, *ct = NULL;
pk = o_arg(L, 1);
if(pk == NULL) {
failed_msg = "Could not allocate public key";
goto end;
} else if(pk->len != PQCLEAN_SNTRUP761_CLEAN_CRYPTO_PUBLICKEYBYTES) {
failed_msg = "invalid size for public key";
goto end;
}
lua_createtable(L, 0, 2);
ss = o_new(L, PQCLEAN_SNTRUP761_CLEAN_CRYPTO_BYTES);
if(ss == NULL) {
failed_msg = "Could not allocate kem secret";
goto end;
}
lua_setfield(L, -2, "secret"); // shared secret
ct = o_new(L, PQCLEAN_SNTRUP761_CLEAN_CRYPTO_CIPHERTEXTBYTES);
if(ct == NULL) {
failed_msg = "Could not allocate kem ciphertext";
goto end;
}
lua_setfield(L, -2, "cipher");
if(PQCLEAN_SNTRUP761_CLEAN_crypto_kem_enc((unsigned char*)ct->val,
(unsigned char*)ss->val,
(unsigned char*)pk->val)) {
failed_msg = "error in the creation of the shared secret";
goto end;
}
ss->len = PQCLEAN_SNTRUP761_CLEAN_CRYPTO_BYTES;
ct->len = PQCLEAN_SNTRUP761_CLEAN_CRYPTO_CIPHERTEXTBYTES;
end:
o_free(L,pk);
if(failed_msg) {
THROW(failed_msg);
}
END(1);
}
static int qp_sntrup_kem_dec(lua_State *L) {
BEGIN();
char *failed_msg = NULL;
octet *sk = o_arg(L, 1);
octet *ct = o_arg(L, 2);
if(sk == NULL || ct == NULL) {
failed_msg = "Could not allocate secret key or ciphertext";
goto end;
}
if(sk->len != PQCLEAN_SNTRUP761_CLEAN_CRYPTO_SECRETKEYBYTES) {
failed_msg = "invalid size for secret key";
goto end;
}
if(ct->len != PQCLEAN_SNTRUP761_CLEAN_CRYPTO_CIPHERTEXTBYTES) {
failed_msg = "invalid size for ciphertext key";
goto end;
}
octet *ss = o_new(L, PQCLEAN_SNTRUP761_CLEAN_CRYPTO_BYTES);
if(ss == NULL) {
failed_msg = "Could not allocate kem secret";
goto end;
}
if(PQCLEAN_SNTRUP761_CLEAN_crypto_kem_dec((unsigned char*)ss->val,
(unsigned char*)ct->val,
(unsigned char*)sk->val)) {
failed_msg = "error in while deciphering the shared secret";
goto end;
}
ss->len = PQCLEAN_SNTRUP761_CLEAN_CRYPTO_BYTES;
end:
o_free(L,sk);
o_free(L,ct);
if(failed_msg) {
THROW(failed_msg);
}
END(1);
}
/*#######################################*/
/* ML-DSA-44 */
/*#######################################*/
static int ml_dsa_44_keypair(lua_State *L) {
/*************************************************
* Name: crypto_sign_keypair
*
* Description: Generates public and private key.
*
* Arguments: - uint8_t *pk: pointer to output public key (allocated
* array of CRYPTO_PUBLICKEYBYTES bytes)
* - uint8_t *sk: pointer to output private key (allocated
* array of CRYPTO_SECRETKEYBYTES bytes)
*
* Returns 0 (success)
**************************************************/
BEGIN();
uint8_t randbytes[32];
char *failed_msg = NULL;
lua_createtable(L, 0, 2);
octet *private = o_new(L, pqcrystals_ml_dsa_44_ipd_SECRETKEYBYTES);
if(private == NULL) {
failed_msg = "Could not allocate private key";
goto end;
}
lua_setfield(L, -2, "private");
octet *public = o_new(L, pqcrystals_ml_dsa_44_ipd_PUBLICKEYBYTES);
if(public == NULL) {
failed_msg = "Could not allocate public key";
goto end;
}
lua_setfield(L, -2, "public");
Z(L);
for(uint8_t i=0;i<32;i++) randbytes[i] = RAND_byte(Z->random_generator);
pqcrystals_ml_dsa_44_ipd_zen_keypair((unsigned char*)public->val,
(unsigned char*)private->val, randbytes);
public->len = pqcrystals_ml_dsa_44_ipd_PUBLICKEYBYTES;
private->len = pqcrystals_ml_dsa_44_ipd_SECRETKEYBYTES;
end:
if(failed_msg) {
THROW(failed_msg);
}
END(1);
}
static int ml_dsa_44_signature_pubgen(lua_State *L) {
BEGIN();
char *failed_msg = NULL;
octet *sk = NULL, *pk = NULL;
sk = o_arg(L, 1);
if(sk == NULL) {
failed_msg = "failed to allocate space for secret key";