On Sat, 24 Jul 2010, Rob Withers wrote:

Hans-Martin Mosner, if you have your ears on, I could use some help figuring out the algorithm. Anyone else for that matter.

Here is the spec: http://csrc.nist.gov/publications/fips/fips46-3/fips46-3.pdf

The key is cooked for encryption or decryption The data block is submitted for encryption (or decryption, depending on the cooked key)

• first the data block is permuted using the Initial Permutation
• result of the permutation step is encrypted using the cooked key
• result of the encryption step is permuted using the inverse of the

Initial Permutation

I do not know if the problem is with the key cooking or the encryption transformation.

Thanks for any help!

Do the tests in the Cryptography package pass for you?

Levente

Rob _______________________________________________ Cryptography mailing list Cryptography@lists.squeakfoundation.org http://lists.squeakfoundation.org/cgi-bin/mailman/listinfo/cryptography

On Sat, 24 Jul 2010, Rob Withers wrote:

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From: "Levente Uzonyi" leves@elte.hu Sent: Saturday, July 24, 2010 6:27 AM To: "Cryptography Team Development List" cryptography@lists.squeakfoundation.org Cc: "Squeak Dev" squeak-dev@lists.squeakfoundation.org Subject: [squeak-dev] Re: [Cryptography Team] DESPlugin is broken

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On Sat, 24 Jul 2010, Rob Withers wrote:

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Hans-Martin Mosner, if you have your ears on, I could use some help figuring out the algorithm. Anyone else for that matter.

Here is the spec: http://csrc.nist.gov/publications/fips/fips46-3/fips46-3.pdf

The key is cooked for encryption or decryption The data block is submitted for encryption (or decryption, depending on the cooked key)

• first the data block is permuted using the Initial Permutation
• result of the permutation step is encrypted using the cooked key
• result of the encryption step is permuted using the inverse of the

Initial Permutation

I do not know if the problem is with the key cooking or the encryption transformation.

Thanks for any help!

Do the tests in the Cryptography package pass for you?

I should note that this failure is under Cog. I am trying to build plugins for Windows Squeak 4.0.2, but am having problems - the topic of a different thread I started.

Some DES test fail. In CryptoDESTest, I am failing on #testDES, #testDES2, #testDESFormal, and #testTripleDES, with the DESPlugin loaded. Without the Plugin all pass green.

That's very strange. I uploaded the DESPlugin I built with the Cog tools to http://leves.web.elte.hu/cryptography/cogplugins/DESPlugin.dll . The plugin is built from the sources linked here: http://lists.squeakfoundation.org/pipermail/squeak-dev/2010-July/152005.html . All tests are green with the plugin.

The DESPlugin I used to use with SqueakVM is here: http://leves.web.elte.hu/cryptography/DESPlugin.dll

Please check if you get errors with these plugins too.

Levente

Rob

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Levente

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Rob _______________________________________________ Cryptography mailing list Cryptography@lists.squeakfoundation.org http://lists.squeakfoundation.org/cgi-bin/mailman/listinfo/cryptography

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Cryptography mailing list Cryptography@lists.squeakfoundation.org http://lists.squeakfoundation.org/cgi-bin/mailman/listinfo/cryptography