On Thu, Oct 18, 2001 at 01:58:10PM +0200, martin f krafft wrote: | goal: a 4-16 byte 7-bit character value that somehow encodes the time | of creation such that it can be extracted if the encoding scheme/seed | is known. the encoded value should be such that it is mostly | impossible to change it so as to yield a later time of creation to be | encoded. in general, changing the encoded value may well render the | data invalid. | | this is supposed to be a token that's valid for a limited amount of | time, after which, a new token has to be fetched. this token should | not be obvious (e.g. the timestamp) to prevent people from changing | it to be valid longer rather than fetching a new one. | | can you do it? or is there a tool out there?
I honestly don't know, but maybe Kerberos is what you are looking for? (I know nothing except little bits I've caught in passing about kerberos) -D
