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ðŸ“ ..
ðŸ“„ ASNObject.php(12.84 KB)
ðŸ“„ AbstractString.php(3.32 KB)
ðŸ“„ AbstractTime.php(2.27 KB)
ðŸ“„ Base128.php(1.45 KB)
ðŸ“ Composite
ðŸ“„ Construct.php(4.31 KB)
ðŸ“ Exception
ðŸ“„ ExplicitlyTaggedObject.php(4.21 KB)
ðŸ“„ Identifier.php(10.57 KB)
ðŸ“„ OID.php(8.11 KB)
ðŸ“„ Parsable.php(1017 B)
ðŸ“„ TemplateParser.php(1.87 KB)
ðŸ“ Universal
ðŸ“„ UnknownConstructedObject.php(1.39 KB)
ðŸ“„ UnknownObject.php(1.27 KB)

Editing: Base128.php

<?php

namespace FG\ASN1;

use FG\Utility\BigInteger;
use InvalidArgumentException;

/**
 * A base-128 decoder.
 */
class Base128
{
    /**
     * @param int $value
     *
     * @return string
     */
    public static function encode($value)
    {
        $value = BigInteger::create($value);
        $octets = chr($value->modulus(0x80)->toInteger());

$value = $value->shiftRight(7);
        while ($value->compare(0) > 0) {
            $octets .= chr(0x80 | $value->modulus(0x80)->toInteger());
            $value = $value->shiftRight(7);
        }

return strrev($octets);
    }

/**
     * @param string $octets
     *
     * @throws InvalidArgumentException if the given octets represent a malformed base-128 value or the decoded value would exceed the the maximum integer length
     *
     * @return int
     */
    public static function decode($octets)
    {
        $bitsPerOctet = 7;
        $value = BigInteger::create(0);
        $i = 0;

while (true) {
            if (!isset($octets[$i])) {
                throw new InvalidArgumentException(sprintf('Malformed base-128 encoded value (0x%s).', strtoupper(bin2hex($octets)) ?: '0'));
            }

$octet = ord($octets[$i++]);

$l1 = $value->shiftLeft($bitsPerOctet);
            $r1 = $octet & 0x7f;
            $value = $l1->add($r1);

if (0 === ($octet & 0x80)) {
                break;
            }
        }

return (string)$value;
    }
}

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Editing: Base128.php

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