(PHP 4 >= 4.2.0, PHP 5, PHP 7) Checks if a private key corresponds to a certificate

(PHP 4 >= 4.0.2, PHP 5, PHP 7) This function checks whether the specified algorithm is a block algorithm

(PHP 4 >= 4.0.4, PHP 5, PHP 7) Generates a key

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

(PHP 5 >= 5.6.0, PHP 7) Retrieve the available certificate locations

(PHP 4 >= 4.0.4, PHP 5, PHP 7) Free key resource

(PHP 5 >= 5.6.0, PHP 7) Exports a valid PEM formatted public key signed public key and challenge

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

(PHP 4 >= 4.0.2, PHP 5, PHP 7) This function initializes all buffers needed for encryption

(PHP 4 >= 4.0.4, PHP 5, PHP 7) Generate signature