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Date: Wed, 16 Sep 2015 09:57:14 +0000
From: Jean-Philippe Aumasson <>
To: "" <>
Subject: Argon2d vs Argon2ds GPU benchmarks?

The latest version of the Argon2 specs (1.2.1) proposes Argon2ds, a tweaked
version of Argon2d:
3. The S-box-with-multiply transformation (almost identical to Solar
Designer's MaxForm) is added to improve the GPU resistance in a new mode
Argon2ds. It is optional as well, and probably subject to change after we
test it on GPU.

Argon2ds uses the GenerateSbox function defined at

Is anyone planning/willing to benchmark Argon2d vs Argon2ds? Would help
understand the actual benefits of this tweak.

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