btm.geek

Normally I would use ‘openssl passwd’ to generate encrypted passwords for scripts and config files, but it doesn’t appear to support sha256 and sha512 yet. There doesn’t appear to be an openssl ticket for this yet. Ubuntu has switched to using SHA512 by default (see ENCRYPT_METHOD in /etc/login.defs). In the course of tracking down the use of passwd/root-password-crypted not working in a jaunty pxe/network install (LP: 340841), I needed to generated a sha512 password to replace the md5 password in the d-i config file.

15:11 < cjwatson> $ echo cjwatson:foo | chpasswd -S -c SHA512
15:11 < cjwatson> cjwatson:$6$K./rc/OhIRi$ylKWgewTkGP3TyXfwj8nnKyIhph66WucLseLjGKKzRM0oRcuRzng2szcC/JZpY13dLxmlILx7eSfdfMHTruH40