mirror of
https://github.com/henrydcase/pqc.git
synced 2024-11-26 17:31:38 +00:00
550 lines
16 KiB
C
550 lines
16 KiB
C
/* Based on the public domain implementation in
|
|
* crypto_hash/keccakc512/simple/ from http://bench.cr.yp.to/supercop.html
|
|
* by Ronny Van Keer
|
|
* and the public domain "TweetFips202" implementation
|
|
* from https://twitter.com/tweetfips202
|
|
* by Gilles Van Assche, Daniel J. Bernstein, and Peter Schwabe */
|
|
|
|
#include <stdint.h>
|
|
#include <assert.h>
|
|
#include "fips202.h"
|
|
|
|
#define NROUNDS 24
|
|
#define ROL(a, offset) ((a << offset) ^ (a >> (64-offset)))
|
|
|
|
/*************************************************
|
|
* Name: load64
|
|
*
|
|
* Description: Load 8 bytes into uint64_t in little-endian order
|
|
*
|
|
* Arguments: - const unsigned char *x: pointer to input byte array
|
|
*
|
|
* Returns the loaded 64-bit unsigned integer
|
|
**************************************************/
|
|
static uint64_t load64(const unsigned char *x)
|
|
{
|
|
unsigned long long r = 0, i;
|
|
|
|
for (i = 0; i < 8; ++i) {
|
|
r |= (unsigned long long)x[i] << 8 * i;
|
|
}
|
|
return r;
|
|
}
|
|
|
|
/*************************************************
|
|
* Name: store64
|
|
*
|
|
* Description: Store a 64-bit integer to a byte array in little-endian order
|
|
*
|
|
* Arguments: - uint8_t *x: pointer to the output byte array
|
|
* - uint64_t u: input 64-bit unsigned integer
|
|
**************************************************/
|
|
static void store64(uint8_t *x, uint64_t u)
|
|
{
|
|
unsigned int i;
|
|
|
|
for(i=0; i<8; ++i) {
|
|
x[i] = u;
|
|
u >>= 8;
|
|
}
|
|
}
|
|
|
|
/* Keccak round constants */
|
|
static const uint64_t KeccakF_RoundConstants[NROUNDS] =
|
|
{
|
|
(uint64_t)0x0000000000000001ULL,
|
|
(uint64_t)0x0000000000008082ULL,
|
|
(uint64_t)0x800000000000808aULL,
|
|
(uint64_t)0x8000000080008000ULL,
|
|
(uint64_t)0x000000000000808bULL,
|
|
(uint64_t)0x0000000080000001ULL,
|
|
(uint64_t)0x8000000080008081ULL,
|
|
(uint64_t)0x8000000000008009ULL,
|
|
(uint64_t)0x000000000000008aULL,
|
|
(uint64_t)0x0000000000000088ULL,
|
|
(uint64_t)0x0000000080008009ULL,
|
|
(uint64_t)0x000000008000000aULL,
|
|
(uint64_t)0x000000008000808bULL,
|
|
(uint64_t)0x800000000000008bULL,
|
|
(uint64_t)0x8000000000008089ULL,
|
|
(uint64_t)0x8000000000008003ULL,
|
|
(uint64_t)0x8000000000008002ULL,
|
|
(uint64_t)0x8000000000000080ULL,
|
|
(uint64_t)0x000000000000800aULL,
|
|
(uint64_t)0x800000008000000aULL,
|
|
(uint64_t)0x8000000080008081ULL,
|
|
(uint64_t)0x8000000000008080ULL,
|
|
(uint64_t)0x0000000080000001ULL,
|
|
(uint64_t)0x8000000080008008ULL
|
|
};
|
|
|
|
/*************************************************
|
|
* Name: KeccakF1600_StatePermute
|
|
*
|
|
* Description: The Keccak F1600 Permutation
|
|
*
|
|
* Arguments: - uint64_t * state: pointer to in/output Keccak state
|
|
**************************************************/
|
|
void KeccakF1600_StatePermute(uint64_t * state)
|
|
{
|
|
int round;
|
|
|
|
uint64_t Aba, Abe, Abi, Abo, Abu;
|
|
uint64_t Aga, Age, Agi, Ago, Agu;
|
|
uint64_t Aka, Ake, Aki, Ako, Aku;
|
|
uint64_t Ama, Ame, Ami, Amo, Amu;
|
|
uint64_t Asa, Ase, Asi, Aso, Asu;
|
|
uint64_t BCa, BCe, BCi, BCo, BCu;
|
|
uint64_t Da, De, Di, Do, Du;
|
|
uint64_t Eba, Ebe, Ebi, Ebo, Ebu;
|
|
uint64_t Ega, Ege, Egi, Ego, Egu;
|
|
uint64_t Eka, Eke, Eki, Eko, Eku;
|
|
uint64_t Ema, Eme, Emi, Emo, Emu;
|
|
uint64_t Esa, Ese, Esi, Eso, Esu;
|
|
|
|
//copyFromState(A, state)
|
|
Aba = state[ 0];
|
|
Abe = state[ 1];
|
|
Abi = state[ 2];
|
|
Abo = state[ 3];
|
|
Abu = state[ 4];
|
|
Aga = state[ 5];
|
|
Age = state[ 6];
|
|
Agi = state[ 7];
|
|
Ago = state[ 8];
|
|
Agu = state[ 9];
|
|
Aka = state[10];
|
|
Ake = state[11];
|
|
Aki = state[12];
|
|
Ako = state[13];
|
|
Aku = state[14];
|
|
Ama = state[15];
|
|
Ame = state[16];
|
|
Ami = state[17];
|
|
Amo = state[18];
|
|
Amu = state[19];
|
|
Asa = state[20];
|
|
Ase = state[21];
|
|
Asi = state[22];
|
|
Aso = state[23];
|
|
Asu = state[24];
|
|
|
|
for( round = 0; round < NROUNDS; round += 2 )
|
|
{
|
|
// prepareTheta
|
|
BCa = Aba^Aga^Aka^Ama^Asa;
|
|
BCe = Abe^Age^Ake^Ame^Ase;
|
|
BCi = Abi^Agi^Aki^Ami^Asi;
|
|
BCo = Abo^Ago^Ako^Amo^Aso;
|
|
BCu = Abu^Agu^Aku^Amu^Asu;
|
|
|
|
//thetaRhoPiChiIotaPrepareTheta(round , A, E)
|
|
Da = BCu^ROL(BCe, 1);
|
|
De = BCa^ROL(BCi, 1);
|
|
Di = BCe^ROL(BCo, 1);
|
|
Do = BCi^ROL(BCu, 1);
|
|
Du = BCo^ROL(BCa, 1);
|
|
|
|
Aba ^= Da;
|
|
BCa = Aba;
|
|
Age ^= De;
|
|
BCe = ROL(Age, 44);
|
|
Aki ^= Di;
|
|
BCi = ROL(Aki, 43);
|
|
Amo ^= Do;
|
|
BCo = ROL(Amo, 21);
|
|
Asu ^= Du;
|
|
BCu = ROL(Asu, 14);
|
|
Eba = BCa ^((~BCe)& BCi );
|
|
Eba ^= (uint64_t)KeccakF_RoundConstants[round];
|
|
Ebe = BCe ^((~BCi)& BCo );
|
|
Ebi = BCi ^((~BCo)& BCu );
|
|
Ebo = BCo ^((~BCu)& BCa );
|
|
Ebu = BCu ^((~BCa)& BCe );
|
|
|
|
Abo ^= Do;
|
|
BCa = ROL(Abo, 28);
|
|
Agu ^= Du;
|
|
BCe = ROL(Agu, 20);
|
|
Aka ^= Da;
|
|
BCi = ROL(Aka, 3);
|
|
Ame ^= De;
|
|
BCo = ROL(Ame, 45);
|
|
Asi ^= Di;
|
|
BCu = ROL(Asi, 61);
|
|
Ega = BCa ^((~BCe)& BCi );
|
|
Ege = BCe ^((~BCi)& BCo );
|
|
Egi = BCi ^((~BCo)& BCu );
|
|
Ego = BCo ^((~BCu)& BCa );
|
|
Egu = BCu ^((~BCa)& BCe );
|
|
|
|
Abe ^= De;
|
|
BCa = ROL(Abe, 1);
|
|
Agi ^= Di;
|
|
BCe = ROL(Agi, 6);
|
|
Ako ^= Do;
|
|
BCi = ROL(Ako, 25);
|
|
Amu ^= Du;
|
|
BCo = ROL(Amu, 8);
|
|
Asa ^= Da;
|
|
BCu = ROL(Asa, 18);
|
|
Eka = BCa ^((~BCe)& BCi );
|
|
Eke = BCe ^((~BCi)& BCo );
|
|
Eki = BCi ^((~BCo)& BCu );
|
|
Eko = BCo ^((~BCu)& BCa );
|
|
Eku = BCu ^((~BCa)& BCe );
|
|
|
|
Abu ^= Du;
|
|
BCa = ROL(Abu, 27);
|
|
Aga ^= Da;
|
|
BCe = ROL(Aga, 36);
|
|
Ake ^= De;
|
|
BCi = ROL(Ake, 10);
|
|
Ami ^= Di;
|
|
BCo = ROL(Ami, 15);
|
|
Aso ^= Do;
|
|
BCu = ROL(Aso, 56);
|
|
Ema = BCa ^((~BCe)& BCi );
|
|
Eme = BCe ^((~BCi)& BCo );
|
|
Emi = BCi ^((~BCo)& BCu );
|
|
Emo = BCo ^((~BCu)& BCa );
|
|
Emu = BCu ^((~BCa)& BCe );
|
|
|
|
Abi ^= Di;
|
|
BCa = ROL(Abi, 62);
|
|
Ago ^= Do;
|
|
BCe = ROL(Ago, 55);
|
|
Aku ^= Du;
|
|
BCi = ROL(Aku, 39);
|
|
Ama ^= Da;
|
|
BCo = ROL(Ama, 41);
|
|
Ase ^= De;
|
|
BCu = ROL(Ase, 2);
|
|
Esa = BCa ^((~BCe)& BCi );
|
|
Ese = BCe ^((~BCi)& BCo );
|
|
Esi = BCi ^((~BCo)& BCu );
|
|
Eso = BCo ^((~BCu)& BCa );
|
|
Esu = BCu ^((~BCa)& BCe );
|
|
|
|
// prepareTheta
|
|
BCa = Eba^Ega^Eka^Ema^Esa;
|
|
BCe = Ebe^Ege^Eke^Eme^Ese;
|
|
BCi = Ebi^Egi^Eki^Emi^Esi;
|
|
BCo = Ebo^Ego^Eko^Emo^Eso;
|
|
BCu = Ebu^Egu^Eku^Emu^Esu;
|
|
|
|
//thetaRhoPiChiIotaPrepareTheta(round+1, E, A)
|
|
Da = BCu^ROL(BCe, 1);
|
|
De = BCa^ROL(BCi, 1);
|
|
Di = BCe^ROL(BCo, 1);
|
|
Do = BCi^ROL(BCu, 1);
|
|
Du = BCo^ROL(BCa, 1);
|
|
|
|
Eba ^= Da;
|
|
BCa = Eba;
|
|
Ege ^= De;
|
|
BCe = ROL(Ege, 44);
|
|
Eki ^= Di;
|
|
BCi = ROL(Eki, 43);
|
|
Emo ^= Do;
|
|
BCo = ROL(Emo, 21);
|
|
Esu ^= Du;
|
|
BCu = ROL(Esu, 14);
|
|
Aba = BCa ^((~BCe)& BCi );
|
|
Aba ^= (uint64_t)KeccakF_RoundConstants[round+1];
|
|
Abe = BCe ^((~BCi)& BCo );
|
|
Abi = BCi ^((~BCo)& BCu );
|
|
Abo = BCo ^((~BCu)& BCa );
|
|
Abu = BCu ^((~BCa)& BCe );
|
|
|
|
Ebo ^= Do;
|
|
BCa = ROL(Ebo, 28);
|
|
Egu ^= Du;
|
|
BCe = ROL(Egu, 20);
|
|
Eka ^= Da;
|
|
BCi = ROL(Eka, 3);
|
|
Eme ^= De;
|
|
BCo = ROL(Eme, 45);
|
|
Esi ^= Di;
|
|
BCu = ROL(Esi, 61);
|
|
Aga = BCa ^((~BCe)& BCi );
|
|
Age = BCe ^((~BCi)& BCo );
|
|
Agi = BCi ^((~BCo)& BCu );
|
|
Ago = BCo ^((~BCu)& BCa );
|
|
Agu = BCu ^((~BCa)& BCe );
|
|
|
|
Ebe ^= De;
|
|
BCa = ROL(Ebe, 1);
|
|
Egi ^= Di;
|
|
BCe = ROL(Egi, 6);
|
|
Eko ^= Do;
|
|
BCi = ROL(Eko, 25);
|
|
Emu ^= Du;
|
|
BCo = ROL(Emu, 8);
|
|
Esa ^= Da;
|
|
BCu = ROL(Esa, 18);
|
|
Aka = BCa ^((~BCe)& BCi );
|
|
Ake = BCe ^((~BCi)& BCo );
|
|
Aki = BCi ^((~BCo)& BCu );
|
|
Ako = BCo ^((~BCu)& BCa );
|
|
Aku = BCu ^((~BCa)& BCe );
|
|
|
|
Ebu ^= Du;
|
|
BCa = ROL(Ebu, 27);
|
|
Ega ^= Da;
|
|
BCe = ROL(Ega, 36);
|
|
Eke ^= De;
|
|
BCi = ROL(Eke, 10);
|
|
Emi ^= Di;
|
|
BCo = ROL(Emi, 15);
|
|
Eso ^= Do;
|
|
BCu = ROL(Eso, 56);
|
|
Ama = BCa ^((~BCe)& BCi );
|
|
Ame = BCe ^((~BCi)& BCo );
|
|
Ami = BCi ^((~BCo)& BCu );
|
|
Amo = BCo ^((~BCu)& BCa );
|
|
Amu = BCu ^((~BCa)& BCe );
|
|
|
|
Ebi ^= Di;
|
|
BCa = ROL(Ebi, 62);
|
|
Ego ^= Do;
|
|
BCe = ROL(Ego, 55);
|
|
Eku ^= Du;
|
|
BCi = ROL(Eku, 39);
|
|
Ema ^= Da;
|
|
BCo = ROL(Ema, 41);
|
|
Ese ^= De;
|
|
BCu = ROL(Ese, 2);
|
|
Asa = BCa ^((~BCe)& BCi );
|
|
Ase = BCe ^((~BCi)& BCo );
|
|
Asi = BCi ^((~BCo)& BCu );
|
|
Aso = BCo ^((~BCu)& BCa );
|
|
Asu = BCu ^((~BCa)& BCe );
|
|
}
|
|
|
|
//copyToState(state, A)
|
|
state[ 0] = Aba;
|
|
state[ 1] = Abe;
|
|
state[ 2] = Abi;
|
|
state[ 3] = Abo;
|
|
state[ 4] = Abu;
|
|
state[ 5] = Aga;
|
|
state[ 6] = Age;
|
|
state[ 7] = Agi;
|
|
state[ 8] = Ago;
|
|
state[ 9] = Agu;
|
|
state[10] = Aka;
|
|
state[11] = Ake;
|
|
state[12] = Aki;
|
|
state[13] = Ako;
|
|
state[14] = Aku;
|
|
state[15] = Ama;
|
|
state[16] = Ame;
|
|
state[17] = Ami;
|
|
state[18] = Amo;
|
|
state[19] = Amu;
|
|
state[20] = Asa;
|
|
state[21] = Ase;
|
|
state[22] = Asi;
|
|
state[23] = Aso;
|
|
state[24] = Asu;
|
|
|
|
#undef round
|
|
}
|
|
|
|
#include <string.h>
|
|
#define MIN(a, b) ((a) < (b) ? (a) : (b))
|
|
|
|
|
|
/*************************************************
|
|
* Name: keccak_absorb
|
|
*
|
|
* Description: Absorb step of Keccak;
|
|
* non-incremental, starts by zeroeing the state.
|
|
*
|
|
* Arguments: - uint64_t *s: pointer to (uninitialized) output Keccak state
|
|
* - unsigned int r: rate in bytes (e.g., 168 for SHAKE128)
|
|
* - const unsigned char *m: pointer to input to be absorbed into s
|
|
* - unsigned long long mlen: length of input in bytes
|
|
* - unsigned char p: domain-separation byte for different Keccak-derived functions
|
|
**************************************************/
|
|
static void keccak_absorb(uint64_t *s,
|
|
unsigned int r,
|
|
const unsigned char *m, unsigned long long int mlen,
|
|
unsigned char p)
|
|
{
|
|
unsigned long long i;
|
|
unsigned char t[200];
|
|
|
|
// Zero state
|
|
for (i = 0; i < 25; ++i)
|
|
s[i] = 0;
|
|
|
|
while (mlen >= r)
|
|
{
|
|
for (i = 0; i < r / 8; ++i)
|
|
s[i] ^= load64(m + 8 * i);
|
|
|
|
KeccakF1600_StatePermute(s);
|
|
mlen -= r;
|
|
m += r;
|
|
}
|
|
|
|
for (i = 0; i < r; ++i)
|
|
t[i] = 0;
|
|
for (i = 0; i < mlen; ++i)
|
|
t[i] = m[i];
|
|
t[i] = p;
|
|
t[r - 1] |= 128;
|
|
for (i = 0; i < r / 8; ++i)
|
|
s[i] ^= load64(t + 8 * i);
|
|
}
|
|
|
|
|
|
/*************************************************
|
|
* Name: keccak_squeezeblocks
|
|
*
|
|
* Description: Squeeze step of Keccak. Squeezes full blocks of r bytes each.
|
|
* Modifies the state. Can be called multiple times to keep squeezing,
|
|
* i.e., is incremental.
|
|
*
|
|
* Arguments: - unsigned char *h: pointer to output blocks
|
|
* - unsigned long long int nblocks: number of blocks to be squeezed (written to h)
|
|
* - uint64_t *s: pointer to in/output Keccak state
|
|
* - unsigned int r: rate in bytes (e.g., 168 for SHAKE128)
|
|
**************************************************/
|
|
static void keccak_squeezeblocks(unsigned char *h, unsigned long long int nblocks,
|
|
uint64_t *s,
|
|
unsigned int r)
|
|
{
|
|
unsigned int i;
|
|
while(nblocks > 0)
|
|
{
|
|
KeccakF1600_StatePermute(s);
|
|
for(i=0;i<(r>>3);i++)
|
|
{
|
|
store64(h+8*i, s[i]);
|
|
}
|
|
h += r;
|
|
nblocks--;
|
|
}
|
|
}
|
|
|
|
|
|
/*************************************************
|
|
* Name: shake128_absorb
|
|
*
|
|
* Description: Absorb step of the SHAKE128 XOF.
|
|
* non-incremental, starts by zeroeing the state.
|
|
*
|
|
* Arguments: - uint64_t *s: pointer to (uninitialized) output Keccak state
|
|
* - const unsigned char *input: pointer to input to be absorbed into s
|
|
* - unsigned long long inputByteLen: length of input in bytes
|
|
**************************************************/
|
|
void shake128_absorb(uint64_t *s, const unsigned char *input, unsigned int inputByteLen)
|
|
{
|
|
keccak_absorb(s, SHAKE128_RATE, input, inputByteLen, 0x1F);
|
|
}
|
|
|
|
/*************************************************
|
|
* Name: shake128_squeezeblocks
|
|
*
|
|
* Description: Squeeze step of SHAKE128 XOF. Squeezes full blocks of SHAKE128_RATE bytes each.
|
|
* Modifies the state. Can be called multiple times to keep squeezing,
|
|
* i.e., is incremental.
|
|
*
|
|
* Arguments: - unsigned char *output: pointer to output blocks
|
|
* - unsigned long long nblocks: number of blocks to be squeezed (written to output)
|
|
* - uint64_t *s: pointer to in/output Keccak state
|
|
**************************************************/
|
|
void shake128_squeezeblocks(unsigned char *output, unsigned long long nblocks, uint64_t *s)
|
|
{
|
|
keccak_squeezeblocks(output, nblocks, s, SHAKE128_RATE);
|
|
}
|
|
|
|
/*************************************************
|
|
* Name: shake256
|
|
*
|
|
* Description: SHAKE256 XOF with non-incremental API
|
|
*
|
|
* Arguments: - unsigned char *output: pointer to output
|
|
* - unsigned long long outlen: requested output length in bytes
|
|
- const unsigned char *input: pointer to input
|
|
- unsigned long long inlen: length of input in bytes
|
|
**************************************************/
|
|
void shake256(unsigned char *output, unsigned long long outlen,
|
|
const unsigned char *input, unsigned long long inlen)
|
|
{
|
|
uint64_t s[25];
|
|
unsigned char t[SHAKE256_RATE];
|
|
unsigned long long nblocks = outlen/SHAKE256_RATE;
|
|
size_t i;
|
|
|
|
/* Absorb input */
|
|
keccak_absorb(s, SHAKE256_RATE, input, inlen, 0x1F);
|
|
|
|
/* Squeeze output */
|
|
keccak_squeezeblocks(output, nblocks, s, SHAKE256_RATE);
|
|
|
|
output+=nblocks*SHAKE256_RATE;
|
|
outlen-=nblocks*SHAKE256_RATE;
|
|
|
|
if(outlen)
|
|
{
|
|
keccak_squeezeblocks(t, 1, s, SHAKE256_RATE);
|
|
for(i=0;i<outlen;i++)
|
|
output[i] = t[i];
|
|
}
|
|
}
|
|
|
|
/*************************************************
|
|
* Name: sha3_256
|
|
*
|
|
* Description: SHA3-256 with non-incremental API
|
|
*
|
|
* Arguments: - unsigned char *output: pointer to output
|
|
* - const unsigned char *input: pointer to input
|
|
* - unsigned long long inlen: length of input in bytes
|
|
**************************************************/
|
|
void sha3_256(unsigned char *output, const unsigned char *input, unsigned long long inlen)
|
|
{
|
|
uint64_t s[25];
|
|
unsigned char t[SHA3_256_RATE];
|
|
size_t i;
|
|
|
|
/* Absorb input */
|
|
keccak_absorb(s, SHA3_256_RATE, input, inlen, 0x06);
|
|
|
|
/* Squeeze output */
|
|
keccak_squeezeblocks(t, 1, s, SHA3_256_RATE);
|
|
|
|
for(i=0;i<32;i++)
|
|
output[i] = t[i];
|
|
}
|
|
|
|
/*************************************************
|
|
* Name: sha3_512
|
|
*
|
|
* Description: SHA3-512 with non-incremental API
|
|
*
|
|
* Arguments: - unsigned char *output: pointer to output
|
|
* - const unsigned char *input: pointer to input
|
|
* - unsigned long long inlen: length of input in bytes
|
|
**************************************************/
|
|
void sha3_512(unsigned char *output, const unsigned char *input, unsigned long long inlen)
|
|
{
|
|
uint64_t s[25];
|
|
unsigned char t[SHA3_512_RATE];
|
|
size_t i;
|
|
|
|
/* Absorb input */
|
|
keccak_absorb(s, SHA3_512_RATE, input, inlen, 0x06);
|
|
|
|
/* Squeeze output */
|
|
keccak_squeezeblocks(t, 1, s, SHA3_512_RATE);
|
|
|
|
for(i=0;i<64;i++)
|
|
output[i] = t[i];
|
|
}
|
|
|