In message <[email protected]> Mark Andrews writes: > > While talking about hardware. These these devices all need a battery > backed clock or all the crypto will be broken.
Having a clock is not hard but I don't think your statement is true. Some crypto does not require time, but rather just entropy (a nonce or challenge). For crypto that does require time the former can be a bootstrap of sorts, possibly to get ntp going if very accurate time is needed (for some reason). For example ssh with rsa or dsa does not require time. You need to know what month and year it is to be good enough as far as checking certificates. A lot of the KARP work does require knowing the time to prevent replay attack. Curtis _______________________________________________ homenet mailing list [email protected] https://www.ietf.org/mailman/listinfo/homenet
