http://cryptome.org/nsa-sha.htm
You probably already know this, but I studied that NSA hashing patent link
you posted May 11, and it looks just like SHA-256/SHA-512 to me. I ve not
seen it publicized anywhere that the NSA has patented the methods utilized
by SHA-256/SHA-512 hashes (and possibly other variants).
Original Link:
http://patft.uspto.gov/netacgi/nph-Parser?patentnumber=6829355
Readable flow/computation details:
http://www.uspto.gov/web/patents/patog/week49/OG/html/1289-1/US06829355-2004
1207.html
FIPS 180-2 (SHA2 family additions to SHS):
http://csrc.nist.gov/publications/fips/fips180-2/fips180-2withchangenoti
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