NAME
argon2-calibrate - a script to find the appropriate argon2 parameters
VERSION
version 0.018
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 theparallelism
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
, memorym
andh
lanes and threads, using different number of passest
. Figure out the maximumt
such that the running time does not exceedx
. If it exceedsx
even fort = 1
, reducem
accordingly. If using Argon2i, t must be at least 3. - 8. Hash all the passwords with the just determined values
m
,h
, andt
.
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.