RC4 is mentioned in passing as having weaknesses, but is it actually broken? If we can't disable SSL3 completely would using only RC4 ciphers be an option?
RC4 is mentioned in passing as having weaknesses, but is it actually broken? If we can't disable SSL3 completely would using only RC4 ciphers be an option?
http://www.isg.rhul.ac.uk/tls/
"Our second attack applies to TLS and can be carried out in a single connection or session (but tolerates multiple connections/sessions). It exploits certain double-byte biases in RC4 keystreams (the Fluhrer-McGrew biases). It targets plaintext bytes located at any position in the TLS plaintext stream. The number of encryptions needed to reliably recover a set of 16 consecutive targeted plaintext bytes is around 10 times 2^30, but already with only 6 times 2^30 sessions, these target bytes can be recovered with 50% reliability. Since this double-byte bias attack does not require the TLS Handshake Protocol to be rerun, it can in practice be more efficient than our single-byte bias attack."
http://www.isg.rhul.ac.uk/tls/RC4biases.pdf
edit: I could not get star to show-up, so I just spelled it out as 'times.'