(PHP 4 >= 4.0.2, PHP 5, PHP 7) Runs a self test on the opened module

(PHP 4 >= 4.0.2, PHP 5, PHP 7) Opens the module of the algorithm and the mode to be used

(PHP 4 >= 4.0.2, PHP 5, PHP 7) Encrypts plaintext with given parameters

(PHP 4 >= 4.0.7, PHP 5, PHP 7) This function deinitializes an encryption module

(PHP 4 >= 4.0.2, PHP 5, PHP 7) Checks whether the algorithm of the opened mode is a block algorithm

(PHP 4 >= 4.0.2, PHP 5, PHP 7) Checks whether the opened mode outputs blocks

(PHP 4 >= 4.0.2, PHP 5, PHP 7) Decrypts crypttext with given parameters

(PHP 4, PHP 5, PHP 7) Creates an initialization vector (IV) from a random source

(PHP 4, PHP 5, PHP 7) Gets the block size of the specified cipher

(PHP 4 >= 4.0.2, PHP 5, PHP 7) Returns the blocksize of the specified algorithm