FM / Cipher

/home/techb158/ileadtechnology.com/vendor/aws/aws-sdk-php/src/Crypto/Cipher/

/home/techb158/ileadtechnology.com/vendor/aws/aws-sdk-php/src/Crypto/Cipher

Name	Size	Mode	Actions
Cbc.php	2099	0644	edit dl rm
CipherBuilderTrait.php	2025	0644	edit dl rm
CipherMethod.php	1620	0644	edit dl rm

Edit: /home/techb158/ileadtechnology.com/vendor/aws/aws-sdk-php/src/Crypto/Cipher/Cbc.php (2099B)

<?php
namespace Aws\Crypto\Cipher;

use \InvalidArgumentException;
use \LogicException;

/**
 * An implementation of the CBC cipher for use with an AesEncryptingStream or
 * AesDecrypting stream.
 *
 * This cipher method is deprecated and in maintenance mode - no new updates will be
 * released. Please see https://docs.aws.amazon.com/general/latest/gr/aws_sdk_cryptography.html
 * for more information.
 *
 * @deprecated
 */
class Cbc implements CipherMethod
{
    const BLOCK_SIZE = 16;

/**
     * @var string
     */
    private $baseIv;

/**
     * @var string
     */
    private $iv;

/**
     * @var int
     */
    private $keySize;

/**
     * @param string $iv Base Initialization Vector for the cipher.
     * @param int $keySize Size of the encryption key, in bits, that will be
     *                     used.
     *
     * @throws InvalidArgumentException Thrown if the passed iv does not match
     *                                  the iv length required by the cipher.
     */
    public function __construct($iv, $keySize = 256)
    {
        $this->baseIv = $this->iv = $iv;
        $this->keySize = $keySize;

if (strlen($iv) !== openssl_cipher_iv_length($this->getOpenSslName())) {
            throw new InvalidArgumentException('Invalid initialization vector');
        }
    }

public function getOpenSslName()
    {
        return "aes-{$this->keySize}-cbc";
    }

public function getAesName()
    {
        return 'AES/CBC/PKCS5Padding';
    }

public function getCurrentIv()
    {
        return $this->iv;
    }

public function requiresPadding()
    {
        return true;
    }

public function seek($offset, $whence = SEEK_SET)
    {
        if ($offset === 0 && $whence === SEEK_SET) {
            $this->iv = $this->baseIv;
        } else {
            throw new LogicException('CBC initialization only support being'
                . ' rewound, not arbitrary seeking.');
        }
    }

public function update($cipherTextBlock)
    {
        $this->iv = substr($cipherTextBlock, self::BLOCK_SIZE * -1);
    }
}

baseIv = $this->iv = $iv; $this->keySize = $keySize; if (strlen($iv) !== openssl_cipher_iv_length($this->getOpenSslName())) { throw new InvalidArgumentException('Invalid initialization vector'); } } public function getOpenSslName() { return "aes-{$this->keySize}-cbc"; } public function getAesName() { return 'AES/CBC/PKCS5Padding'; } public function getCurrentIv() { return $this->iv; } public function requiresPadding() { return true; } public function seek($offset, $whence = SEEK_SET) { if ($offset === 0 && $whence === SEEK_SET) { $this->iv = $this->baseIv; } else { throw new LogicException('CBC initialization only support being' . ' rewound, not arbitrary seeking.'); } } public function update($cipherTextBlock) { $this->iv = substr($cipherTextBlock, self::BLOCK_SIZE * -1); } }