Delphi AES library (Rijndael) tested with KAT Vectors

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Delphi AES library (Rijndael) tested with KAT Vectors

Hi, for these 2 libraries,

I tested their Rijndael DCB/CBC algorithm with "AES Known Answer Test (KAT) Vectors" obtained at NIST website (http://csrc.nist.gov/groups/STM/cavp/index.html)

But, both of these libraries failed the tests.

Not sure if it was my testing that has error, has anyone tested them before as well? I am looking for a Delphi Rijndael library that is able to pass the KAT Vectors test. Does anyone know of any such library?

I know another lib, but not if passes your test or not:

DCPCrypt http://www.cityinthesky.co.uk/cryptography.html

Marco van de Voort 2010-10-06 13:27:30

+2 A:

Are you sure it fails? The vectors are written as hex strings. Did you feed the hex strings as strings or did you convert them first as binary data. If you fed them as strings it is no wonder you get a different result.

NB: I do not use both libraries but my own components but they bioth have a good track record and failing these simple tests seems highly unlikely.

Ritsaert Hornstra 2010-10-06 13:37:59

Initially I fed ASCII (converted from the hex strings in test vector file) strings to the function, and it failed. But after looking into the code, realize the function manipulate the data as bytes. So, I fed byte array into the function, and now it works. =)

seveleven 2010-10-07 13:56:45

But I've got a question, is byte array also called as binary data? Is binary data same as a base2 string?

seveleven 2010-10-07 13:59:01

The successful testing was done on DEC library. Didn't try again on LockBox.

seveleven 2010-10-07 17:06:21

:) Good. As an answer to your question: a Byte Array is a good placeholder to store binary data or octets if you want to call them; values that each hold 8 bits of data (eg a byte). If you need to store a base2 string you might consider using a Boolean array since a boolean is in fact just a single bit. You might be confused in how binary data is shown( hexadecimal (base16), decimal (base10) or as ones and zeros (base2). Hope this answers your question..

Ritsaert Hornstra 2010-10-10 21:01:00

TurboPower LockBox 3.1.0 has been released. It includes DUnit tests which validates the correctness of its implememtation using the official AES test vectors.

Sean B. Durkin 2010-10-26 00:21:40

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Delphi AES library (Rijndael) tested with KAT Vectors

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