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Date: Sat, 25 May 2019 23:03:13 +0300
From: Vitaly Chikunov <vt@altlinux.org>
To: Open-source aspects of GOST Cryptography
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On Sun, May 05, 2019 at 12:57:21AM +0300, Vitaly Chikunov wrote:
> 
> К слову, достаточно 64-х "\xff".
> 
>   libgcrypt (master)$ perl -E 'print "\xff" x 64'| openssl dgst -md_gost12_256 -r; perl -E 'print "\xff" x 64' | ./tests/gchash stribog256 -
>   964a5ab60286f106288743e2fe1a422d160898ca1bd535e831aa500cfe34d7e8 *stdin
>   6cad1fb10486524958e90756a6e72ab717d89842634004a0958582d256209818  -

Заодно тест на реализацию add512:

  ~/infotecs$ perl -E 'print "\xff" x 64' > ff
  ~/infotecs$ xxd ff
  00000000: ffff ffff ffff ffff ffff ffff ffff ffff  ................
  00000010: ffff ffff ffff ffff ffff ffff ffff ffff  ................
  00000020: ffff ffff ffff ffff ffff ffff ffff ffff  ................
  00000030: ffff ffff ffff ffff ffff ffff ffff ffff  ................

  ~/infotecs$ ./vipnethashcalc-tool ff --hash-alg Gost12S256
  Вычисленное значение хэш-функции: 6CAD1FB10486524958E90756A6E72AB717D89842634004A0958582D256209818

Значение хэша у ViPNet Hash Calculation Tool 5.2.1.1027 соответствует
реализации с ошибкой.

ps. На всякий случай:

  ~/infotecs$ ./vipnethashcalc-tool ff --hash-alg Gost94
  Вычисленное значение хэш-функции: 8505D4623B76E757B63A4F9ADFF2413BAB457560A6A41A7D0056B909CDDD3D6C