TOlfCryptDecrypt Class

Definition

Unit:
Olf.RTL.CryptDecrypt
Package:
MinimalFMXProject

Simple class to crypt and decrypt buffers.

Delphi 
type TOlfCryptDecrypt = class(TObject)
Inheritance
TObject
TOlfCryptDecrypt

Remarks

This unit contains very simple cryptographic algorithms. DON't USE THEM FOR SENSIBLE DATAS !!! Check those projects if you need a more robust algorithm : - Delphi Encryption Compendium https://github.com/MHumm/DelphiEncryptionCompendium - TMS Cryptographic Pack https://www.tmssoftware.com/site/tmscrypto.asp

Constructors

Create

Create an instance of TOlfCryptDecrypt class

Create(TByteDynArray)

Create an instance of TOlfCryptDecrypt class and fill its key buffer as bytes

Create(TIntegerDynArray)

Create an instance of TOlfCryptDecrypt class and fill its key buffer as integers

Properties

ByteKeys

buffer of bytes used as a key by Crypt/Decrypt functions

IntegerKeys

buffer of integers used as a key by Crypt/Decrypt functions

Methods

Crypt(TStream)

DEPRECATED - internally use XORCrypt

Crypt(TStream, TByteDynArray)

DEPRECATED - internally use XORCrypt

Decrypt(TStream)

DEPRECATED - internally use XORDecrypt

Decrypt(TStream, TByteDynArray)

DEPRECATED - internally use XORDecrypt

GenIDBKey(Word)
GenShiftKey(Word)
GenSwapKey

Export a key as an array of 256 random bytes

GenXORKey(Word)

Export a key as an array of random bytes

IDBCrypt(TStream)
IDBCrypt(TStream, TIntegerDynArray)
IDBCrypt(string, TIntegerDynArray)
IDBDecrypt(TStream)
IDBDecrypt(TStream, TIntegerDynArray)
IDBDecrypt(string, TIntegerDynArray)
ShiftCrypt(TStream)
ShiftCrypt(TStream, TIntegerDynArray)
ShiftCrypt(string, TIntegerDynArray)
ShiftDecrypt(TStream)
ShiftDecrypt(TStream, TIntegerDynArray)
ShiftDecrypt(string, TIntegerDynArray)
SwapCrypt(TStream)

exchange bytes between a buffer to crypt and the property key

SwapCrypt(TStream, TByteDynArray)

exchange bytes between a buffer to crypt and the key parameter

SwapCrypt(string, TByteDynArray)
SwapDecrypt(TStream)

exchange bytes between a buffer to uncrypt and the property key

SwapDecrypt(TStream, TByteDynArray)

exchange bytes between a buffer to uncrypt and the key parameter

SwapDecrypt(string, TByteDynArray)
XORCrypt(TStream)

use XOR operand to crypt a buffer with the keys buffer property

XORCrypt(TStream, TByteDynArray)

use XOR operand to crypt a buffer with a keys buffer

XORCrypt(string, TByteDynArray)
XORDecrypt(TStream)

use XOR operand to decrypt a buffer with the keys buffer property

XORDecrypt(TStream, TByteDynArray)

use XOR operand to decrypt a buffer with a keys buffer

XORDecrypt(string, TByteDynArray)