(PHP 5 >= 5.5.0, PHP 7) Generates a PKCS5 v2 PBKDF2 string, defaults to SHA-1

(PHP 4 >= 4.0.6, PHP 5, PHP 7) Decrypts an S/MIME encrypted message

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

(PHP 5 >= 5.5.0, PHP 7) Generate a PBKDF2 key derivation of a supplied password

(PHP 5 >= PHP 5.3.3, PHP 7) Gets the cipher iv length

(PHP 4 >= 4.0.2, PHP 5, PHP 7) Opens the module of the algorithm and the mode to be used

(PECL crack >= 0.1) Opens a new CrackLib dictionary

(PHP 5 >= 5.1.2, PHP 7, PECL hash >= 1.1) Finalize an incremental hash and return resulting digest

(PHP 4 >= 4.2.0, PHP 5, PHP 7) Exports a CSR as a string

(PHP 4 >= 4.0.2, PHP 5, PHP 7) Runs a self test on the opened module