[Cryptech Tech] trng ready for play
Joachim Strömbergson
joachim at secworks.se
Tue Oct 7 05:18:56 UTC 2014
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
Aloha!
Bernd Paysan wrote:
> Feeding in a full block of known stuff into SHA-2 as key for ChaCha
> however does reduce the entropy (we only have the counter, which
> isn't reset at reseeding).
This is incorrect. ChaCha is reseeded with:
(1) New 256 bit key
(2) New 512 bit block
(3) New 64 bit IV
(4) New 64 bit counter initial value.
- --
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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=KDr3
-----END PGP SIGNATURE-----
More information about the Tech
mailing list