[Cryptech Tech] ChaCha now in Cryptech

Joachim Strömbergson joachim at secworks.se
Wed Sep 3 14:00:24 UTC 2014


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

Aloha!

As a preparation for the upcoming TRNG core have I just added the ChaCha
stream cipher core to Cryptech. This version of ChaCha allows setting of
the initial value of the block counter to a given number. This will be
used in the TRNG design.

The top level wrapper, which is also included in the chacha core source
files sets the initial value hard to all zero which makes the cipher
conform to known tests. This means that the ChaCha core is not specific
to the TRNG core, but can be used in any HW application that needs it.

Finally there is a Python model included.

- -- 
Med vänlig hälsning, Yours

Joachim Strömbergson - Alltid i harmonisk svängning.
========================================================================
 Joachim Strömbergson          Secworks AB          joachim at secworks.se
========================================================================
-----BEGIN PGP SIGNATURE-----
Version: GnuPG/MacGPG2 v2.0.22 (Darwin)
Comment: GPGTools - http://gpgtools.org
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/
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=hHHH
-----END PGP SIGNATURE-----


More information about the Tech mailing list