PYTHON mcrypt_decrypt

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Python replacement for PHP's mcrypt_decrypt [ edit | history ]
#for DES3
from Crypto.Cipher import DES #require pycrypto

crypto =, DES.MODE_ECB)
origin = crypto.decrypt(encrypted)

PHP mcrypt_decrypt

PHP original manual for mcrypt_decrypt [ show | ]


(PHP 4 >= 4.0.2, PHP 5)

mcrypt_decryptDecrypts crypttext with given parameters


string mcrypt_decrypt ( string $cipher , string $key , string $data , string $mode [, string $iv ] )

Decrypts the data and returns the unencrypted data.



cipher is one of the MCRYPT_ciphername constants of the name of the algorithm as string.


key is the key with which the data is encrypted. If it's smaller that the required keysize, it is padded with '\0'.


data is the data that will be decrypted with the given cipher and mode. If the size of the data is not n * blocksize, the data will be padded with '\0'.


mode is one of the MCRYPT_MODE_modename constants of one of "ecb", "cbc", "cfb", "ofb", "nofb" or "stream".


The iv parameter is used for the initialisation in CBC, CFB, OFB modes, and in some algorithms in STREAM mode. If you do not supply an IV, while it is needed for an algorithm, the function issues a warning and uses an IV with all bytes set to '\0'.

Return Values

Returns the decrypted data as a string.