(PHP 4 >= 4.0.6, PHP 5, PHP 7) Parse an X509 certificate and return the information as an array

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

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

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

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

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

(PECL crack >= 0.1) Returns the message from the last obscure check

(PHP 5 >= 5.5.0, PHP 7) Creates a password hash

(PHP 5 >= 5.3.0, PHP 7) Computes a digest

(PHP 5 >= 5.3.0, PHP 7) Gets available cipher methods