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Subject: [Bug 218512] Geli arbitrarily prevents setting passphrases
Date: Sat, 22 Apr 2017 06:10:18 +0000
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D218512

--- Comment #15 from Alexander Motin <mav@FreeBSD.org> ---
Changing passphrase without -i should not change number of iterations, so t=
here
should be no problem:

        /*
         * Field md_iterations equal to -1 means "choose some sane
         * value for me".
         */
        if (md->md_iterations =3D=3D -1) {
                assert(new);
                if (verbose)
                        printf("Calculating number of iterations...\n");
                md->md_iterations =3D pkcs5v2_calculate(2000000);
                assert(md->md_iterations > 0);
                if (verbose) {
                        printf("Done, using %d iterations.\n",
                            md->md_iterations);
                }
        }

If md_iterations was ever set, the same value should be used for that disk
forever.

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