(PHP 4 >= 4.0.2, PHP 5, PHP 7) Returns if the specified mode outputs blocks or not

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

(PHP 4 >= 4.0.2, PHP 5, PHP 7) Returns an array with the supported keysizes of the opened algorithm

(PHP 4 >= 4.0.4, PHP 5, PHP 7) Open sealed data

(PHP 4 >= 4.0.6, PHP 5, PHP 7) Decrypts data with private key

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

(PHP 4 >= 4.0.6, PHP 5, PHP 7) Verifies if a certificate can be used for a particular purpose

(PHP 5 >= 5.3.0, PHP 7) Generate a pseudo-random string of bytes

(PHP 5 >= 5.6.0, PHP 7) Timing attack safe string comparison

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