PHP mcrypt_module_is_block_mode Examples

Example #1

File: mcrypt_module_is_block_mode.php Project: badlamer/hhvm

<?php

var_dump(mcrypt_module_is_block_mode(MCRYPT_MODE_CBC));
var_dump(mcrypt_module_is_block_mode(MCRYPT_MODE_ECB));
var_dump(mcrypt_module_is_block_mode(MCRYPT_MODE_STREAM));
var_dump(mcrypt_module_is_block_mode(MCRYPT_MODE_NOFB));
var_dump(mcrypt_module_is_block_mode(MCRYPT_MODE_OFB));

Example #2

File: Encrypter.php Project: phpsource/PHP-Security-Library

 /**
  * This method decrypts ciphertext into plaintext.
  *
  * @param \PSL\CipherText $cipherTextObject
  * @param binary $key
  * @return binary
  */
 public static function decrypt(CipherText $cipherTextObject, $key)
 {
     // TODO: Accept JSON encoded string?
     // The decryption.
     $cipher = $cipherTextObject->cipher;
     $operationMode = $cipherTextObject->operationMode;
     $cipherText = $cipherTextObject->cipherText;
     $iv = $cipherTextObject->iv;
     // Make sure we have everything.
     if ($iv === null || $cipher === null || $operationMode === null || $cipherText === null) {
         throw new Exception("Could not decrypt because one or more details of these were missing: cipher, block mode, cipher text, iv. Please specify all of them.");
     }
     // Make sure we can actually decrypt using these details.
     self::isCipherable($cipher, $key, $operationMode, true);
     if (($plainText = (string) @mcrypt_decrypt($cipher, $key, $cipherText, $operationMode, $iv)) == false) {
         throw new Exception("Could not decrypt with a cipher '{$cipher}' using a block mode '{$operationMode}'.");
     }
     // Handling the padding for block cipher modes such as CBC and ECB.
     if (@mcrypt_module_is_block_mode($operationMode) === true) {
         $textSize = strlen($plainText);
         $amountOfPadding = ord($plainText[$textSize - 1]);
         $plainText = substr($plainText, 0, $textSize - $amountOfPadding);
     }
     return (string) $plainText;
 }

Example #3

File: ext_mcrypt.php Project: badlamer/hhvm

VERIFY($encrypted !== "This is very important data");
mcrypt_generic_deinit($td);
mcrypt_generic_init($td, $key, $iv);
$decrypted = mdecrypt_generic($td, $encrypted);
mcrypt_generic_end($td);
mcrypt_module_close($td);
VS($decrypted, "This is very important data");
VERIFY(in_array("blowfish", mcrypt_list_algorithms()));
VERIFY(in_array("cbc", mcrypt_list_modes()));
VS(mcrypt_module_get_algo_block_size("blowfish"), 8);
VS(mcrypt_module_get_algo_key_size("blowfish"), 56);
VS(mcrypt_module_get_supported_key_sizes("blowfish"), array());
VS(mcrypt_module_get_supported_key_sizes("twofish"), array(16, 24, 32));
VS(mcrypt_module_is_block_algorithm_mode("cbc"), true);
VS(mcrypt_module_is_block_algorithm("blowfish"), true);
VS(mcrypt_module_is_block_mode("cbc"), true);
VS(mcrypt_module_self_test(MCRYPT_RIJNDAEL_128), true);
VS(mcrypt_module_self_test("bogus"), false);
$text = "boggles the inivisble monkey will rule the world";
$key = "very secret key";
$iv_size = mcrypt_get_iv_size(MCRYPT_XTEA, MCRYPT_MODE_ECB);
$iv = mcrypt_create_iv($iv_size, MCRYPT_RAND);
$enc = mcrypt_encrypt(MCRYPT_XTEA, $key, $text, MCRYPT_MODE_ECB, $iv);
VS(bin2hex($enc), "f522c62002fa16129c8576bcddc6dd0f7ea81991103ba42962d94c8bfff3ee660d53b187d7e989540abf5a729c2f7baf");
$crypttext = mcrypt_decrypt(MCRYPT_XTEA, $key, $enc, MCRYPT_MODE_ECB, $iv);
VS($crypttext, $text);
//////////////////////////////////////////////////////////////////////
$key = "123456789012345678901234567890123456789012345678901234567890";
$CC = "4007000000027";
$encrypted = mcrypt_cbc(MCRYPT_RIJNDAEL_128, substr($key, 0, 32), $CC, MCRYPT_ENCRYPT, substr($key, 32, 16));
$decrypted = mcrypt_cbc(MCRYPT_RIJNDAEL_128, substr($key, 0, 32), $encrypted, MCRYPT_DECRYPT, substr($key, 32, 16));