(PHP 4 >= 4.0.2, PHP 5, PHP 7) Gets an array of all supported ciphers

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

(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) Computes a digest

(PHP 4 >= 4.2.0, PHP 5, PHP 7) Gets an exportable representation of a key into a file

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

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

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

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

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