keccak256.cpp File Reference

#include "keccak256.h"
#include <string.h>

Include dependency graph for keccak256.cpp:

Go to the source code of this file.

Macros
#define	KECCAK_ROUNDS   24U
#define	KECCAK_RATE   136U /* 1088 / 8 bytes — rate for 256-bit output */
#define	KECCAK_STATE_LANE   25U /* 5×5 uint64_t lanes */

Functions
static uint64_t	rot64 (uint64_t x, uint8_t n)
static void	keccak_f1600 (uint64_t st[KECCAK_STATE_LANE])
void	keccak256 (const uint8_t *input, size_t length, uint8_t digest[32])

Variables
static const uint64_t	kRC [KECCAK_ROUNDS]
static const uint8_t	kRHO [KECCAK_STATE_LANE]

Macro Definition Documentation

KECCAK_RATE

#define KECCAK_RATE   136U /* 1088 / 8 bytes — rate for 256-bit output */

Definition at line 10 of file keccak256.cpp.

Referenced by keccak256().

KECCAK_ROUNDS

#define KECCAK_ROUNDS   24U

Definition at line 9 of file keccak256.cpp.

Referenced by keccak_f1600().

KECCAK_STATE_LANE

#define KECCAK_STATE_LANE   25U /* 5×5 uint64_t lanes */

Definition at line 11 of file keccak256.cpp.

Referenced by keccak256(), and keccak_f1600().

Function Documentation

keccak256()

void keccak256	(	const uint8_t *	input,
		size_t	length,
		uint8_t	digest[32] )

Examples

UsdcSigning/main/main.cpp.

Definition at line 85 of file keccak256.cpp.

References keccak_f1600(), KECCAK_RATE, and KECCAK_STATE_LANE.

Referenced by signing_loop().

keccak_f1600()

void keccak_f1600 ( uint64_t st[KECCAK_STATE_LANE] )

static

Definition at line 42 of file keccak256.cpp.

References KECCAK_ROUNDS, KECCAK_STATE_LANE, kRC, kRHO, and rot64().

Referenced by keccak256().

rot64()

uint64_t rot64 ( uint64_t x, uint8_t n )

static

Definition at line 37 of file keccak256.cpp.

Referenced by keccak_f1600().

Variable Documentation

kRC

const uint64_t kRC[KECCAK_ROUNDS]

static

Initial value:

= {
    0x0000000000000001ULL, 0x0000000000008082ULL,
    0x800000000000808AULL, 0x8000000080008000ULL,
    0x000000000000808BULL, 0x0000000080000001ULL,
    0x8000000080008081ULL, 0x8000000000008009ULL,
    0x000000000000008AULL, 0x0000000000000088ULL,
    0x0000000080008009ULL, 0x000000008000000AULL,
    0x000000008000808BULL, 0x800000000000008BULL,
    0x8000000000008089ULL, 0x8000000000008003ULL,
    0x8000000000008002ULL, 0x8000000000000080ULL,
    0x000000000000800AULL, 0x800000008000000AULL,
    0x8000000080008081ULL, 0x8000000000008080ULL,
    0x0000000080000001ULL, 0x8000000080008008ULL,
}

Definition at line 13 of file keccak256.cpp.

Referenced by keccak_f1600().

kRHO

const uint8_t kRHO[KECCAK_STATE_LANE]

static

Initial value:

= {
     0,  1, 62, 28, 27,   
    36, 44,  6, 55, 20,   
     3, 10, 43, 25, 39,   
    41, 45, 15, 21,  8,   
    18,  2, 61, 56, 14    
}

Definition at line 29 of file keccak256.cpp.

Referenced by keccak_f1600().