GNU gnu-pw-mgr "manages" passwords by re-computing them on demand. It does an sha256 sum of a long, unguessable string stored in a protected file conjoined with a never-recorded private permutation of a domain name. The result is cropped and twiddled in repeatable ways to satisfy the password requirements of the intended web site. By basing the check sum on a permutation of a domain, it winds up easier to have different passwords for different domains than to overuse a single password.
Since its initial release, none of the algorithms have changed, so previously created passwords will still be produced by this modified program. New in 2.3.2 - June 2018 replaced --use-pbkdf2 with --rehash and constrain values to 1 to 100,000. --no-pbkdf2 is deprecated. The new password formatting option "no-sequence" did not quite work. Fixed now. Chase Bank will not tell me if my algorithm is correct. I think it is, but they will not confirm. It is proprietary information. If you get a conflict, change the --rehash value. And let me know :). The password modification date is now monitored. The assumption is that since changes to "--rehash" create a new password, then the date of changing that is the date of the last change. The answers to security questions have changed. The original variation is still printed out, but they change every time you change your password. The new variation is based strictly on the password id and the question itself. Consequently, changing the --rehash value has no effect. online docs: http://www.gnu.org/software/gnu-pw-mgr/manual/html_node/index.html gnu-pw-id home: http://www.gnu.org/software/gnu-pw-mgr/ primary ftp: ftp://ftp.gnu.org/gnu/gnu-pw-mgr/ .tar.gz: ftp://ftp.gnu.org/gnu/gnu-pw-mgr/gnu-pw-mgr-2.3.2.tar.gz bug reports: bug-gnu-pw-mgr at the usual GNU domain bug archive: https://lists.gnu.org/mailman/listinfo/bug-gnu-pw-mgr maintainer: Bruce Korb - bkorb at the usual GNU domain -- If you have a working or partly working program that you'd like to offer to the GNU project as a GNU package, see https://www.gnu.org/help/evaluation.html.