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Date: Sun, 22 Apr 2018 19:47:58 +0200
From: Solar Designer <>
Cc: Denis Burykin <>
Subject: Re: bcrypt cracking on ZTEX 1.15y FPGA boards (bcrypt-ztex)


On Sun, Apr 22, 2018 at 06:04:39PM +0300, teraflopgroup wrote:
> The board is ztex. 1.15y.
> I installed linux mint, compiled JtR, but now I do not pass the test with
> the board.

The problems you report are most likely caused by faulty hardware.
Please start by replacing the USB cable(s).  Some old cables were
produced in the USB 1.1 days and wouldn't run at USB 2.0 speeds.

Are you able to use this board with any other software, such as a
Bitcoin miner?  Of course, it'll be too slow to be useful these days,
but just as a test you could use cgminer-3.1.1.


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