NAME

       argon2-calibrate - script to find the appropriate argon2 parameters

VERSION

       version 0.013

DESCRIPTION

       This program implements the following procedure, as recommended by the argon2 authors:

       1. Select the type "y". If you do not know the difference between them, choose Argon2id.
       2. Figure out the maximum number of threads "h" that can be initiated by each call to
       Argon2. This is the "parallelism" argument.
       3. Figure out the maximum amount of memory  "m" that each call can a afford.
       4. Figure out the maximum amount "x" of time (in seconds) that each call can a afford.
       5. Select the salt length. 16 bytes is suffient for all applications, but can be reduced
       to 8 bytes in the case of space constraints.
       6. Select the tag (output) size. 16 bytes is suffient for most applications, including key
       derivation.
       7. Run the scheme of type "y", memory "m" and "h" lanes and threads, using different
       number of passes "t". Figure out the maximum "t" such that the running time does not
       exceed "x". If it exceeds "x" even for "t = 1", reduce "m" accordingly. If using Argon2i,
       t must be at least 3.
       8. Hash all the passwords with the just determined values "m", "h", and "t".

AUTHOR

       Leon Timmermans <leont@cpan.org>

COPYRIGHT AND LICENSE

       Daniel Dinu, Dmitry Khovratovich, Jean-Philippe Aumasson, Samuel Neves, Thomas Pornin and
       Leon Timmermans has dedicated the work to the Commons by waiving all of his or her rights
       to the work worldwide under copyright law and all related or neighboring legal rights he
       or she had in the work, to the extent allowable by law.

       Works under CC0 do not require attribution. When citing the work, you should not imply
       endorsement by the author.