EncryptUpdate Method
Encrypts the next block of data.
Object Oriented Interface
public function doEncryptUpdate($buffer);
Procedural Interface
secureblackbox_symmetriccrypto_do_encryptupdate($res, $buffer);
Remarks
Use this method to encrypt the next block of data contained in Buffer.
Call this method after calling EncryptInit for as many times as needed, until the wholevolume of data is processed. Having done that, call EncryptFinal to complete the encryptionand get the terminating encrypted trailer.