FM / Ecdsa

/home/techb158/dev.balacoffee.com/vendor/lcobucci/jwt/src/Signer/Ecdsa/

/home/techb158/dev.balacoffee.com/vendor/lcobucci/jwt/src/Signer/Ecdsa

Name	Size	Mode	Actions
ConversionFailed.php	607	0644	edit dl rm
MultibyteStringConverter.php	4696	0644	edit dl rm
Sha256.php	404	0644	edit dl rm
Sha384.php	404	0644	edit dl rm
Sha512.php	405	0644	edit dl rm
SignatureConverter.php	1034	0644	edit dl rm

Edit: /home/techb158/dev.balacoffee.com/vendor/lcobucci/jwt/src/Signer/Ecdsa/MultibyteStringConverter.php (4696B)

<?php
declare(strict_types=1);

/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2014-2018 Spomky-Labs
 *
 * This software may be modified and distributed under the terms
 * of the MIT license.  See the LICENSE file for details.
 *
 * @link https://github.com/web-token/jwt-framework/blob/v1.2/src/Component/Core/Util/ECSignature.php
 */

namespace Lcobucci\JWT\Signer\Ecdsa;

use function assert;
use function bin2hex;
use function dechex;
use function hex2bin;
use function hexdec;
use function is_string;
use function mb_strlen;
use function mb_substr;
use function str_pad;

use const STR_PAD_LEFT;

/**
 * ECDSA signature converter using ext-mbstring
 *
 * @internal
 */
final class MultibyteStringConverter implements SignatureConverter
{
    private const ASN1_SEQUENCE          = '30';
    private const ASN1_INTEGER           = '02';
    private const ASN1_MAX_SINGLE_BYTE   = 128;
    private const ASN1_LENGTH_2BYTES     = '81';
    private const ASN1_BIG_INTEGER_LIMIT = '7f';
    private const ASN1_NEGATIVE_INTEGER  = '00';
    private const BYTE_SIZE              = 2;

public function toAsn1(string $points, int $length): string
    {
        $points = bin2hex($points);

if (self::octetLength($points) !== $length) {
            throw ConversionFailed::invalidLength();
        }

$pointR = self::preparePositiveInteger(mb_substr($points, 0, $length, '8bit'));
        $pointS = self::preparePositiveInteger(mb_substr($points, $length, null, '8bit'));

$lengthR = self::octetLength($pointR);
        $lengthS = self::octetLength($pointS);

$totalLength  = $lengthR + $lengthS + self::BYTE_SIZE + self::BYTE_SIZE;
        $lengthPrefix = $totalLength > self::ASN1_MAX_SINGLE_BYTE ? self::ASN1_LENGTH_2BYTES : '';

$asn1 = hex2bin(
            self::ASN1_SEQUENCE
            . $lengthPrefix . dechex($totalLength)
            . self::ASN1_INTEGER . dechex($lengthR) . $pointR
            . self::ASN1_INTEGER . dechex($lengthS) . $pointS
        );
        assert(is_string($asn1));

return $asn1;
    }

private static function octetLength(string $data): int
    {
        return (int) (mb_strlen($data, '8bit') / self::BYTE_SIZE);
    }

private static function preparePositiveInteger(string $data): string
    {
        if (mb_substr($data, 0, self::BYTE_SIZE, '8bit') > self::ASN1_BIG_INTEGER_LIMIT) {
            return self::ASN1_NEGATIVE_INTEGER . $data;
        }

while (
            mb_substr($data, 0, self::BYTE_SIZE, '8bit') === self::ASN1_NEGATIVE_INTEGER
            && mb_substr($data, 2, self::BYTE_SIZE, '8bit') <= self::ASN1_BIG_INTEGER_LIMIT
        ) {
            $data = mb_substr($data, 2, null, '8bit');
        }

return $data;
    }

public function fromAsn1(string $signature, int $length): string
    {
        $message  = bin2hex($signature);
        $position = 0;

if (self::readAsn1Content($message, $position, self::BYTE_SIZE) !== self::ASN1_SEQUENCE) {
            throw ConversionFailed::incorrectStartSequence();
        }

// @phpstan-ignore-next-line
        if (self::readAsn1Content($message, $position, self::BYTE_SIZE) === self::ASN1_LENGTH_2BYTES) {
            $position += self::BYTE_SIZE;
        }

$pointR = self::retrievePositiveInteger(self::readAsn1Integer($message, $position));
        $pointS = self::retrievePositiveInteger(self::readAsn1Integer($message, $position));

$points = hex2bin(str_pad($pointR, $length, '0', STR_PAD_LEFT) . str_pad($pointS, $length, '0', STR_PAD_LEFT));
        assert(is_string($points));

return $points;
    }

private static function readAsn1Content(string $message, int &$position, int $length): string
    {
        $content   = mb_substr($message, $position, $length, '8bit');
        $position += $length;

return $content;
    }

private static function readAsn1Integer(string $message, int &$position): string
    {
        if (self::readAsn1Content($message, $position, self::BYTE_SIZE) !== self::ASN1_INTEGER) {
            throw ConversionFailed::integerExpected();
        }

$length = (int) hexdec(self::readAsn1Content($message, $position, self::BYTE_SIZE));

return self::readAsn1Content($message, $position, $length * self::BYTE_SIZE);
    }

private static function retrievePositiveInteger(string $data): string
    {
        while (
            mb_substr($data, 0, self::BYTE_SIZE, '8bit') === self::ASN1_NEGATIVE_INTEGER
            && mb_substr($data, 2, self::BYTE_SIZE, '8bit') > self::ASN1_BIG_INTEGER_LIMIT
        ) {
            $data = mb_substr($data, 2, null, '8bit');
        }

return $data;
    }
}

self::ASN1_MAX_SINGLE_BYTE ? self::ASN1_LENGTH_2BYTES : ''; $asn1 = hex2bin( self::ASN1_SEQUENCE . $lengthPrefix . dechex($totalLength) . self::ASN1_INTEGER . dechex($lengthR) . $pointR . self::ASN1_INTEGER . dechex($lengthS) . $pointS ); assert(is_string($asn1)); return $asn1; } private static function octetLength(string $data): int { return (int) (mb_strlen($data, '8bit') / self::BYTE_SIZE); } private static function preparePositiveInteger(string $data): string { if (mb_substr($data, 0, self::BYTE_SIZE, '8bit') > self::ASN1_BIG_INTEGER_LIMIT) { return self::ASN1_NEGATIVE_INTEGER . $data; } while ( mb_substr($data, 0, self::BYTE_SIZE, '8bit') === self::ASN1_NEGATIVE_INTEGER && mb_substr($data, 2, self::BYTE_SIZE, '8bit') <= self::ASN1_BIG_INTEGER_LIMIT ) { $data = mb_substr($data, 2, null, '8bit'); } return $data; } public function fromAsn1(string $signature, int $length): string { $message = bin2hex($signature); $position = 0; if (self::readAsn1Content($message, $position, self::BYTE_SIZE) !== self::ASN1_SEQUENCE) { throw ConversionFailed::incorrectStartSequence(); } // @phpstan-ignore-next-line if (self::readAsn1Content($message, $position, self::BYTE_SIZE) === self::ASN1_LENGTH_2BYTES) { $position += self::BYTE_SIZE; } $pointR = self::retrievePositiveInteger(self::readAsn1Integer($message, $position)); $pointS = self::retrievePositiveInteger(self::readAsn1Integer($message, $position)); $points = hex2bin(str_pad($pointR, $length, '0', STR_PAD_LEFT) . str_pad($pointS, $length, '0', STR_PAD_LEFT)); assert(is_string($points)); return $points; } private static function readAsn1Content(string $message, int &$position, int $length): string { $content = mb_substr($message, $position, $length, '8bit'); $position += $length; return $content; } private static function readAsn1Integer(string $message, int &$position): string { if (self::readAsn1Content($message, $position, self::BYTE_SIZE) !== self::ASN1_INTEGER) { throw ConversionFailed::integerExpected(); } $length = (int) hexdec(self::readAsn1Content($message, $position, self::BYTE_SIZE)); return self::readAsn1Content($message, $position, $length * self::BYTE_SIZE); } private static function retrievePositiveInteger(string $data): string { while ( mb_substr($data, 0, self::BYTE_SIZE, '8bit') === self::ASN1_NEGATIVE_INTEGER && mb_substr($data, 2, self::BYTE_SIZE, '8bit') > self::ASN1_BIG_INTEGER_LIMIT ) { $data = mb_substr($data, 2, null, '8bit'); } return $data; } }