At 01:00 PM 98/05/05 -0400, Rich Ankney wrote:
Hitachi claims to have a patent covering SHA1.
This seems rather odd. Is it on a particular hardware implementation
of SHA1? Do you have a patent number for this?
I'm not completely sure, but it seems to be US patent 5465299: "Electronic
document processing system and method of forming digital signature"; in
fact, Hitachi claims to have no less than three patents that might cover SHA1.
For more information about crypto-related patents, take a look at
<http://grouper.ieee.org/groups/1363/patents.html>.
Regards,
Paulo Barreto.