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

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

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

(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) Parse an X509 certificate and return the information as an array

(PHP 5 >= 5.2.2, PHP 7) Exports a PKCS#12 Compatible Certificate Store File to variable.

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

(PHP 5 >= 5.1.2, PHP 7, PECL hash >= 1.1) Generate a hash value using the contents of a given file

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

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