How do I generate an encrypted password string, as it is in /etc/shadow?

The crypt algorithm involves a lot more than just re-hashing 5,000 times: Unix crypt using SHA-256 and SHA-512.

Yeah, I was expecting something like this. Thanks, I'll read through it and accept if it's what I'm looking for. – polemon Sep 24 '10 at 11:36 The document say: "2.

The password string is added to digest A. 3. The salt string is added to digest A."

Does that mean, that first I append the salt to the password string? If so, that would be the other way round for MD5, which prefixes passwords with salt. – polemon Sep 24 '10 at 11:42 Ok, I'm getting there, I also cross checked with eglibc.Org/cgi-bin/viewcvs.cgi/branches/eglibc-2_9/libc/crypt/…, interestingly, there are some documentation errors... I don't quite get the last part, where he makes the Base64, is that reversed byte order?

– polemon Sep 26 '10 at 3:15.

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