kvazar/crypto-php
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commit 6ac12c61fc
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1
.gitignore vendored Normal file
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/vendor/

12
composer.json Normal file
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{
"name": "kvazar/crypto",
"description": "Crypto Tools for PHP 8",
"type": "library",
"license": "MIT",
"autoload": {
"psr-4": {
"Kvazar\\Crypto\\": "src/"
}
},
"require": {}
}

123
src/Base58.php Normal file
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<?php
declare(strict_types=1);
namespace Kvazar\Crypto;
use Kvazar\Crypto\Hash;
use Kvazar\Crypto\Tool;
class Base58
{
private const AVAILABLE_CHARS = '123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz';
public static function encode(
string $value,
?int $prefix = 128,
?bool $compressed = true
): string
{
$value = hex2bin(
$value
);
if ($prefix)
{
$value = chr(
$prefix
) . $value;
}
if ($compressed)
{
$value .= chr(
0x01
);
}
$value = $value . substr(
Hash::sha256(
Hash::sha256(
$value
)
), 0, 4
);
$base58 = self::_encode(
Tool::bin2bc(
$value
)
);
for ($i = 0; $i < strlen($value); $i++)
{
if ($value[$i] != '\x00')
{
break;
}
$base58 = '1' . $base58;
}
return $base58;
}
public static function decode(
string $value,
?int $removeLeadingBytes = 1,
?int $removeTrailingBytes = 4,
?bool $removeCompression = true
)
{
$value = bin2hex(
Tool::bc2bin(
self::_decode(
$value
)
)
);
if ($removeLeadingBytes)
{
$value = substr(
$value,
$removeLeadingBytes * 2
);
}
if ($removeTrailingBytes)
{
$value = substr(
$value, 0, -($removeTrailingBytes * 2)
);
}
if ($removeCompression)
{
$value = substr(
$value, 0, -2
);
}
return $value;
}
private static function _encode($num, $length = 58): string
{
return Tool::dec2base(
$num,
$length,
self::AVAILABLE_CHARS
);
}
private static function _decode(string $value, int $length = 58): string
{
return Tool::base2dec(
$value,
$length,
self::AVAILABLE_CHARS
);
}
}

39
src/Hash.php Normal file
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<?php
declare(strict_types=1);
namespace Kvazar\Crypto;
class Hash
{
public static function sha256(string $data, $raw = true): string
{
return hash(
'sha256',
$data,
$raw
);
}
public static function sha256d(string $data): string
{
return hash(
'sha256',
hash(
'sha256',
$data,
true
),
true
);
}
public static function ripemd160(string $data, $raw = true): string
{
return hash(
'ripemd160',
$data,
$raw
);
}
}

142
src/Tool.php Normal file
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<?php
declare(strict_types=1);
namespace Kvazar\Crypto;
class Tool
{
public static function bc2bin($num)
{
return self::dec2base(
$num,
256
);
}
public static function dec2base($dec, $base, $digits = false): ?string
{
if ($base < 2 || $base > 256)
{
return null;
}
bcscale(0);
$value = '';
if (!$digits)
{
$digits = self::digits(
$base
);
}
while ($dec > $base - 1)
{
$rest = bcmod(
$dec,
$base
);
$dec = bcdiv(
$dec,
$base
);
$value = $digits[$rest] . $value;
}
$value = $digits[intval($dec)] . $value;
return (string) $value;
}
public static function base2dec($value, $base, $digits = false): ?string
{
if ($base < 2 || $base > 256)
{
return null;
}
bcscale(0);
if ($base < 37)
{
$value = strtolower(
$value
);
}
if (!$digits)
{
$digits = self::digits(
$base
);
}
$size = strlen(
$value
);
$dec = '0';
for ($loop = 0; $loop < $size; $loop++)
{
$element = strpos(
$digits,
$value[$loop]
);
$power = bcpow(
$base,
$size - $loop - 1
);
$dec = bcadd(
$dec,
bcmul(
$element,
$power
)
);
}
return (string) $dec;
}
public static function digits($base): string
{
if ($base > 64)
{
$digits = '';
for ($loop = 0; $loop < 256; $loop++)
{
$digits .= chr(
$loop
);
}
}
else
{
$digits = '0123456789abcdefghijklmnopqrstuvwxyz';
$digits .= 'ABCDEFGHIJKLMNOPQRSTUVWXYZ-_';
}
$digits = substr(
$digits, 0, $base
);
return (string) $digits;
}
public static function bin2bc($num)
{
return self::base2dec(
$num,
256
);
}
}