Let's do a GNU TSL

Werner Koch wk@gnupg.org
Thu, 24 Feb 2000 19:15:35 +0100


On Thu, 24 Feb 2000, Nikos Mavroyanopoulos wrote:


> No the pseudorandom function here (i think the name is not a good choice)
> just expands a secret(key). (just like the s2k algorithms in openpgp).
I see.
> However i do not think rc2 is patented since rfc2268 describes rc2 and does not
> mention anything about patents. RC4 is used in almost all ssl implementations
According to the HAC: "RC2 is a block cipher proprietary to RSA Data Security. (as is the stream cipher RC4)." I don,t see a reason to support such things. We better keep with standard block ciphers. RC4 is a different thing becuase it seems it is widely used and an independet but compatibel algoritm called arcfour exists. Even if it is not patented, it is possible to violate the copyright. Anyway, not a problem we can discuss this later and start with the MUST algorithms. Werner