Skip to content

Instantly share code, notes, and snippets.

@forthxu

forthxu/Keccak256.php

Created March 7, 2018 09:14
Show Gist options
  • Star 0 You must be signed in to star a gist
  • Fork 0 You must be signed in to fork a gist
  • Save forthxu/c1d9b274742af9e272285153664a5bf4 to your computer and use it in GitHub Desktop.
Save forthxu/c1d9b274742af9e272285153664a5bf4 to your computer and use it in GitHub Desktop.
Download ZIP
ethereum Keccak256(sha3-256),erc20,erc223,erc721
Raw
Keccak256.php
<?php
/**
* @copyright Bruno Bierbaumer, Vladimir Vyatkin
* @see https://github.com/0xbb/php-sha3
*/
namespace Keccak;
final class Keccak256
{
const KECCAK_ROUNDS = 24;
private static $keccakf_rotc = [1, 3, 6, 10, 15, 21, 28, 36, 45, 55, 2, 14, 27, 41, 56, 8, 25, 43, 62, 18, 39, 61, 20, 44];
private static $keccakf_piln = [10, 7, 11, 17, 18, 3, 5, 16, 8, 21, 24, 4, 15, 23, 19, 13, 12,2, 20, 14, 22, 9, 6, 1];
/**
* @author Bruno Bierbaumer https://github.com/0xbb
*/
private static function keccakf32(&$st, $rounds)
{
$keccakf_rndc = [
[0x0000, 0x0000, 0x0000, 0x0001], [0x0000, 0x0000, 0x0000, 0x8082], [0x8000, 0x0000, 0x0000, 0x0808a], [0x8000, 0x0000, 0x8000, 0x8000],
[0x0000, 0x0000, 0x0000, 0x808b], [0x0000, 0x0000, 0x8000, 0x0001], [0x8000, 0x0000, 0x8000, 0x08081], [0x8000, 0x0000, 0x0000, 0x8009],
[0x0000, 0x0000, 0x0000, 0x008a], [0x0000, 0x0000, 0x0000, 0x0088], [0x0000, 0x0000, 0x8000, 0x08009], [0x0000, 0x0000, 0x8000, 0x000a],
[0x0000, 0x0000, 0x8000, 0x808b], [0x8000, 0x0000, 0x0000, 0x008b], [0x8000, 0x0000, 0x0000, 0x08089], [0x8000, 0x0000, 0x0000, 0x8003],
[0x8000, 0x0000, 0x0000, 0x8002], [0x8000, 0x0000, 0x0000, 0x0080], [0x0000, 0x0000, 0x0000, 0x0800a], [0x8000, 0x0000, 0x8000, 0x000a],
[0x8000, 0x0000, 0x8000, 0x8081], [0x8000, 0x0000, 0x0000, 0x8080], [0x0000, 0x0000, 0x8000, 0x00001], [0x8000, 0x0000, 0x8000, 0x8008]
];
$bc = [];
for ($round = 0; $round < $rounds; $round++) {
// Theta
for ($i = 0; $i < 5; $i++) {
$bc[$i] = [
$st[$i][0] ^ $st[$i + 5][0] ^ $st[$i + 10][0] ^ $st[$i + 15][0] ^ $st[$i + 20][0],
$st[$i][1] ^ $st[$i + 5][1] ^ $st[$i + 10][1] ^ $st[$i + 15][1] ^ $st[$i + 20][1],
$st[$i][2] ^ $st[$i + 5][2] ^ $st[$i + 10][2] ^ $st[$i + 15][2] ^ $st[$i + 20][2],
$st[$i][3] ^ $st[$i + 5][3] ^ $st[$i + 10][3] ^ $st[$i + 15][3] ^ $st[$i + 20][3]
];
}
for ($i = 0; $i < 5; $i++) {
$t = [
$bc[($i + 4) % 5][0] ^ ((($bc[($i + 1) % 5][0] << 1) | ($bc[($i + 1) % 5][1] >> 15)) & (0xFFFF)),
$bc[($i + 4) % 5][1] ^ ((($bc[($i + 1) % 5][1] << 1) | ($bc[($i + 1) % 5][2] >> 15)) & (0xFFFF)),
$bc[($i + 4) % 5][2] ^ ((($bc[($i + 1) % 5][2] << 1) | ($bc[($i + 1) % 5][3] >> 15)) & (0xFFFF)),
$bc[($i + 4) % 5][3] ^ ((($bc[($i + 1) % 5][3] << 1) | ($bc[($i + 1) % 5][0] >> 15)) & (0xFFFF))
];
for ($j = 0; $j < 25; $j += 5) {
$st[$j + $i] = [
$st[$j + $i][0] ^ $t[0],
$st[$j + $i][1] ^ $t[1],
$st[$j + $i][2] ^ $t[2],
$st[$j + $i][3] ^ $t[3]
];
}
}
// Rho Pi
$t = $st[1];
for ($i = 0; $i < 24; $i++) {
$j = self::$keccakf_piln[$i];
$bc[0] = $st[$j];
$n = self::$keccakf_rotc[$i] >> 4;
$m = self::$keccakf_rotc[$i] % 16;
$st[$j] = [
((($t[(0+$n) %4] << $m) | ($t[(1+$n) %4] >> (16-$m))) & (0xFFFF)),
((($t[(1+$n) %4] << $m) | ($t[(2+$n) %4] >> (16-$m))) & (0xFFFF)),
((($t[(2+$n) %4] << $m) | ($t[(3+$n) %4] >> (16-$m))) & (0xFFFF)),
((($t[(3+$n) %4] << $m) | ($t[(0+$n) %4] >> (16-$m))) & (0xFFFF))
];
$t = $bc[0];
}
// Chi
for ($j = 0; $j < 25; $j += 5) {
for ($i = 0; $i < 5; $i++) {
$bc[$i] = $st[$j + $i];
}
for ($i = 0; $i < 5; $i++) {
$st[$j + $i] = [
$st[$j + $i][0] ^ ~$bc[($i + 1) % 5][0] & $bc[($i + 2) % 5][0],
$st[$j + $i][1] ^ ~$bc[($i + 1) % 5][1] & $bc[($i + 2) % 5][1],
$st[$j + $i][2] ^ ~$bc[($i + 1) % 5][2] & $bc[($i + 2) % 5][2],
$st[$j + $i][3] ^ ~$bc[($i + 1) % 5][3] & $bc[($i + 2) % 5][3]
];
}
}
// Iota
$st[0] = [
$st[0][0] ^ $keccakf_rndc[$round][0],
$st[0][1] ^ $keccakf_rndc[$round][1],
$st[0][2] ^ $keccakf_rndc[$round][2],
$st[0][3] ^ $keccakf_rndc[$round][3]
];
}
}
private static function keccak32($input, $capacity, $outputlength, $suffix, $raw_output)
{
$capacity /= 8;
$inlen = \mb_strlen($input, '8bit');
$rsiz = 200 - 2 * $capacity;
$rsizw = $rsiz / 8;
$st = [];
for ($i = 0; $i < 25; $i++) {
$st[] = [0, 0, 0, 0];
}
for ($in_t = 0; $inlen >= $rsiz; $inlen -= $rsiz, $in_t += $rsiz) {
for ($i = 0; $i < $rsizw; $i++) {
$t = unpack('v*', \mb_substr($input, $i * 8 + $in_t, 8, '8bit'));
$st[$i] = [
$st[$i][0] ^ $t[4],
$st[$i][1] ^ $t[3],
$st[$i][2] ^ $t[2],
$st[$i][3] ^ $t[1]
];
}
self::keccakf32($st, self::KECCAK_ROUNDS);
}
$temp = \mb_substr($input, $in_t, $inlen, '8bit');
$temp = str_pad($temp, $rsiz, "\x0", STR_PAD_RIGHT);
$temp[$inlen] = chr($suffix);
$temp[$rsiz - 1] = chr(hexdec($temp[$rsiz - 1]) | 0x80);
for ($i = 0; $i < $rsizw; $i++) {
$t = unpack('v*', \mb_substr($temp, $i * 8, 8, '8bit'));
$st[$i] = [
$st[$i][0] ^ $t[4],
$st[$i][1] ^ $t[3],
$st[$i][2] ^ $t[2],
$st[$i][3] ^ $t[1]
];
}
self::keccakf32($st, self::KECCAK_ROUNDS);
$out = '';
for ($i = 0; $i < 25; $i++) {
$out .= $t = pack('v*', $st[$i][3],$st[$i][2], $st[$i][1], $st[$i][0]);
}
$r = \mb_substr($out, 0, $outputlength / 8, '8bit');
return $raw_output ? $r: bin2hex($r);
}
private static function keccak($input, $capacity, $outputlength, $suffix, $raw_output) {
return self::keccak32($input, $capacity, $outputlength, $suffix, $raw_output);
}
public static function hash($input, $mdlen, $raw_output = false)
{
if( !in_array($mdlen, [224, 256], true) ) {
throw new \Exception('Unsupported Keccak256 Hash output size.');
}
return self::keccak($input, $mdlen, $mdlen, 0x01, $raw_output);
}
public static function shake($input, $security_level, $outlen, $raw_output = false)
{
if( !in_array($security_level, [128, 256], true) ) {
throw new \Exception('Unsupported Keccak256 Shake security level.');
}
return self::keccak($input, $security_level, $outlen, 0x1f, $raw_output);
}
}
echo "\n",'erc20',"\n";
echo 'transfer(address,uint256)',' ',substr(Keccak256::hash('transfer(address,uint256)', 256),0,8),"\n";
echo 'transferFrom(address,address,uint256)',' ',substr(Keccak256::hash('transferFrom(address,address,uint256)', 256),0,8),"\n";
echo 'approve(address,uint256)',' ',substr(Keccak256::hash('approve(address,uint256)', 256),0,8),"\n";
echo 'allowance(address,address)',' ',substr(Keccak256::hash('allowance(address,address)', 256),0,8),"\n";
echo 'balanceOf(address)',' ',substr(Keccak256::hash('balanceOf(address)', 256),0,8),"\n";
echo 'totalSupply()',' ',substr(Keccak256::hash('totalSupply()', 256),0,8),"\n";
echo 'decimals()',' ',substr(Keccak256::hash('decimals()', 256),0,8),"\n";
//不一定有
echo 'symbol()',' ',substr(Keccak256::hash('symbol()', 256),0,8),"\n";
echo 'name()',' ',substr(Keccak256::hash('name()', 256),0,8),"\n";
echo 'batchTransfer(address[],uint256)',' ',substr(Keccak256::hash('batchTransfer(address[],uint256)', 256),0,8),"\n";
echo "\n",'erc223',"\n";
echo 'transfer(address,uint256)',' ',substr(Keccak256::hash('transfer(address,uint256)', 256),0,8),"\n";
echo 'transferFrom(address,address,uint256)',' ',substr(Keccak256::hash('transferFrom(address,address,uint256)', 256),0,8),"\n";
echo 'approve(address,uint256)',' ',substr(Keccak256::hash('approve(address,uint256)', 256),0,8),"\n";
echo 'allowance(address,address)',' ',substr(Keccak256::hash('allowance(address,address)', 256),0,8),"\n";
echo 'balanceOf(address)',' ',substr(Keccak256::hash('balanceOf(address)', 256),0,8),"\n";
echo 'totalSupply()',' ',substr(Keccak256::hash('totalSupply()', 256),0,8),"\n";
echo 'decimals()',' ',substr(Keccak256::hash('decimals()', 256),0,8),"\n";
echo 'transfer(address,uint256,bytes)',' ',substr(Keccak256::hash('transfer(address,uint256,bytes)', 256),0,8),"\n";
echo 'transfer(address,uint256,bytes,string)',' ',substr(Keccak256::hash('transfer(address,uint256,bytes,string)', 256),0,8),"\n";
//不一定有
echo 'symbol()',' ',substr(Keccak256::hash('symbol()', 256),0,8),"\n";
echo 'name()',' ',substr(Keccak256::hash('name()', 256),0,8),"\n";
echo 'transferFrom(address,address,uint256,bytes)',' ',substr(Keccak256::hash('transferFrom(address,address,uint256,bytes)', 256),0,8),"\n";
echo "\n",'erc721',"\n";
echo 'transfer(address,uint256)',' ',substr(Keccak256::hash('transfer(address,uint256)', 256),0,8),"\n";
echo 'transferFrom(address,address,uint256)',' ',substr(Keccak256::hash('transferFrom(address,address,uint256)', 256),0,8),"\n";
echo 'approve(address,uint256)',' ',substr(Keccak256::hash('approve(address,uint256)', 256),0,8),"\n";
echo 'balanceOf(address)',' ',substr(Keccak256::hash('balanceOf(address)', 256),0,8),"\n";
echo 'totalSupply()',' ',substr(Keccak256::hash('totalSupply()', 256),0,8),"\n";
echo 'symbol()',' ',substr(Keccak256::hash('symbol()', 256),0,8),"\n";
echo 'name()',' ',substr(Keccak256::hash('name()', 256),0,8),"\n";
echo 'ownerOf(uint256)',' ',substr(Keccak256::hash('ownerOf(uint256)', 256),0,8),"\n";
//不一定有
echo 'takeOwnership(uint256)',' ',substr(Keccak256::hash('takeOwnership(uint256)', 256),0,8),"\n";
echo 'tokenOfOwnerByIndex(address,uint256)',' ',substr(Keccak256::hash('tokenOfOwnerByIndex(address,uint256)', 256),0,8),"\n";
echo 'tokenMetadata(uint256)',' ',substr(Keccak256::hash('tokenMetadata(uint256)', 256),0,8),"\n";
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment