Jim Gillogly <jim(_at_)acm(_dot_)org> writes:
RIPEM-D [??]
* RIPEMD-160 is not patented, see (as of 25.10.97)
* http://www.esat.kuleuven.ac.be/~bosselae/ripemd160.html
TIGER is also not patented.
RSA is patented in the USA, but not elsewhere. The patent runs out on
Sep 20th, 2000
Diffie-Hellman (X9.42) [??]
The Diffie Hellman key agreement has run out on Apr 29th, 1997.
IDEA is patented [with expiration ??/??/??, and permission must be
2010 (but I'm not sure)
CAST5 is patented [patent applied for?] but Nortel and/or Entrust have
said
it may be used for commercial and non-commercial applications.
See RFC2144.
Werner