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Aloha!
Niels Möller wrote:
Does anyone here know what applications or protocols use arctwo, and with which key sizes?
There are cipher suites in both SSLv3 and TLS 1.0 that uses RC2 as session cipher. These are part of the EXPORT ciphers with 40 bit keys.
I tried to look at the report cards from SSL Labs to see how many actually includes them in the handshake. Judging by somewhat old stats from Qyalys quite a few servers support RC2 with 40 bit key as well as 128 bit key.
- -- Med vänlig hälsning, Yours
Joachim Strömbergson - Alltid i harmonisk svängning. ======================================================================== Joachim Strömbergson Secworks AB joachim@secworks.se ========================================================================