Screenshot of AS-QuadLEA 1.10
A command line program for encryption and decryption of files. The program uses four 256-bit LEA-256 (in CTR mode ) in serial.
This program has two additional parameters. These are "-DR" (Double Rounds, that doubles the number of rounds) and "-QR" (Quad Rounds, that quadruples the number of rounds).
The program uses a key strengthening algorithm , this increases the security.
The program stores an encrypted checksum  of the original file, which is verified at decryption.
The program delivers an ErrorLevel code  which indicates success (0) or failure (1).
The speed is measured and the program will display the results for you when it's done.
Use the parameter "-NoPercent" to display the number of Bytes that has been processed instead of percent.
Speed Reference: Approximately 24 MB/sec. (Intel Core i3-9100)  Approximately 12 MB/sec. with double rounds. Approximately 6 MB/sec. with quadruple rounds.
Important information: Save the downloaded program if you have information encrypted with it. I do not guarantee compatibility between different versions/revisions of the program.
> Download AS-QuadLEA 1.10 (Zip, 527 kB)
Revision Date: 2021-05-10.
Unicode Support: Yes.
Program Type: Fully portable, x64.
Operating System(s): Windows 7 (SP1+), 8.1 and 10. (Also Windows Server 2012 R2 and 2016.)
Language(s): Only English.
 Counter mode, a block cipher mode used to make a stream cipher of a block cipher. In this program, a 128-bit random nonce is used, which is fetched from Microsoft Crypto API. (RANDOM.DLL / RANDOM-X86.DLL)
 The key strengthening algorithm is using SHA3-256 and executes 131,072 times for each password. (KSA.DLL / KSA-X86.DLL)
 The encrypted checksum is a CRC-64-ECMA.
 The ErrorLevel code can be useful when calling from batch files or other programs.
 The speed reference is measured under good conditions, a fast disk and a pretty large file.
Source Code: You can find the source code to my implementation of LEA-256 on the page Source Code. The source code is for Embarcadero Delphi.
You can also download all in one Zip file, Console_Crypto.ZIP.
Copyright © 1998-2021, Andreas Jönsson. All rights reserved.