Class AesCrypt() Professional
Class function of the AesCrypt class
The AesCrypt class provides the interface for AES encryption/decryption. Its role is to provide a cryptographic implementation of AES, the Advanced Encryption Standard as announced by NIST, effective May 26 2002. It is derived from the class CryptProvider. This class is not yet documented because it is an abstract, which cannot be instantiated.
AES uses the Rijndael algorithm to encrypt/decrypt data. It is a block code.
The current implementation supports a block length of 16 byte, and key lengths of 128, 192 or 256 bit.
SecureKey():destroy() can be called right after setting the key object, either after :new() or :setKey().
// In this example, AesCrypt() is used
// to encrypt a single buffer
#include "crypt.ch"
PROCEDURE MAIN(cBuffer)
LOCAL oAes
LOCAL oKey
LOCAL cResult
// generate a key and print out
oKey := SecureKey():generate()
? oKey:toString()
// create AesCrypt()-instance using the key
oAes := AesCrypt():new(oKey)
// destroy key value
oKey:destroy()
// prepare input buffer length
oAes:prepareBuffer(@cBuffer)
// encrypt buffer
cResult := oAes:encrypt(cBuffer)
? cResult
RETURN
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