(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 if the specified mode outputs blocks or not

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

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

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

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

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

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