AS-LEA 1.10
Command line program for encryption of files
Screenshot of AS-LEA 1.10
A command line program for encryption and decryption of files. The program uses a 256-bit LEA-256 (in CTR mode [1]).
This program has one additional parameter. This is "-DR" (Double Rounds, that doubles the number of rounds).
The program uses a key strengthening algorithm [2], this increases the security.
The program stores an encrypted checksum [3] of the original file, which is verified at decryption.
The program delivers an ErrorLevel code [4] 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 80 MB/sec. (Intel Core i3-9100) [5] Approximately 40 MB/sec. with double 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-LEA 1.10 (Zip, 524 kB)
Revision Date: 2021-01-20.
License: Freeware.
Unicode Support: Yes.
Program Type: Portable, x64.
Operating System(s): Windows 7 (SP1+), 8.1 and 10. (Also Windows Server 2012 R2 and 2016.)
Language(s): Only English.
[1] 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)
[2] The key strengthening algorithm is using SHA3-256 and executes 131,072 times. (KSA.DLL / KSA-X86.DLL)
[3] The encrypted checksum is a CRC-64-ECMA.
[4] The ErrorLevel code can be useful when calling from batch files or other programs.
[5] The speed reference is measured under good conditions, a fast disk and a pretty large file.
AS-ARC5 · AS-ARC6 · AS-ISAAC64 · AS-LEA · AS-QuadCAST · AS-Rabbit
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