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-{{{
-#!htmlcomment
-
-This page is maintained automatically by a script. Don't modify this page by hand,
-your changes will just be overwritten the next time the script runs. Talk to your
-Friendly Neighborhood Repository Maintainer if you need to change something here.
-
-}}}
-
-{{{
-#!html
-<h1>cryptlib</h1>
-
-<h2>Introduction</h2>
-
-<p>This is a port of Peter Gutmann's
-<a href="https://www.cs.auckland.ac.nz/~pgut001/cryptlib/">cryptlib package</a>
-to the Cryptech project's environment. This is a work in progress,
-and still at a very early stage as of this writing.</p>
-
-<p>The main addition to the stock cryptlib environment is a set of
-Hardware Adaption Layer (HAL) implementations that use the Cryptech
-FPGA cores.</p>
-
-<p>While we expect to be making more significant use of cryptlib in the
-future, the main purposes of this code at the moment are
-proof-of-concept and connecting the Cryptech cores to a more complete
-cryptographic programming environment for testing and development
-purposes.</p>
-
-<h2>Current status</h2>
-
-<p>At present, the Cryptech HAL code runs only on the Novena PVT1. There
-are three variants of the HAL, all using the I2C bus, but speaking
-different protocols:</p>
-
-<ul>
-<li><p>An implementation using the <code>coretest</code> byte-stream protocol
-implemented by the <code>core/novena</code> FPGA build.</p></li>
-<li><p>An implementation using the simpler interface implemented by the
-<code>core/novena_i2c_simple</code> environment.</p></li>
-<li><p>An implementation using the <code>coretest</code> byt-stream protocol as
-implemented by the <code>test/novena_trng</code> FPGA build. This differs from
-the others in that it supports the Cryptech TRNG. Note that neither
-this HAL nor this FPGA build supports any cryptographic algorithms.</p></li>
-</ul>
-
-<p>All of these HAL implementations are in the <code>src/</code> directory. See the
-<code>GNUmakefile</code> for details on how to select the variant you want.</p>
-
-<p>At present, the only relevant Cryptech cores are the TRNG and several
-digest algorithms. The current HAL uses the SHA-1, SHA-256, and
-SHA-512 cores to implement the SHA-1, SHA-256, SHA-384, and SHA-512
-digests. SHA-512/224 and SHA-512/256 are not supported.</p>
-
-<p>In principal there is no reason why one could not write a HAL which
-spoke to a Terasic board, perhaps via the <code>coretest</code> protocol over a
-UART, but to date this has not been done.</p>
-
-<h2>Code import status</h2>
-
-<p>Cryptlib itself is present in the repository in the form of a verbatim
-copy of the Cryptlib 3.4.2 distribution zipfile, which the top-level
-makefile unpacks while building. This has proven simpler to work with
-than importing the entire Cryptlib distribution into a vendor branch.</p>
-
-<p>Packaging Cryptlib this way has two implications:</p>
-
-<ul>
-<li><p>You may need to <code>apt-get install unzip</code> on your Novena.</p></li>
-<li><p>Any changes you might make to Cryptlib itself will be lost when you
-run <code>make clean</code>.</p></li>
-</ul>
-
-<h2>Test code</h2>
-
-<p>The <code>tests/</code> directory contains a few test scripts, written in Python,
-using the standard Cryptlib Python bindings. The Cryptlib Python
-environment is a fairly literaly translation of the Cryptlib C
-environment, so portions of it will be a bit, um, surprising to Python
-programmers, but the basic functionality works. Note that it's normal
-for test scripts to fail when the functionality they're testing isn't
-loaded on the FPGA.</p>
-
-<h2>Copyright status</h2>
-
-<p>Cryptlib itself is copyright by Peter Gutmann. See the Cryptlib web
-site for licensing details.</p>
-
-<p>Code written for the Cryptech project is under the usual Cryptech
-BSD-style license.</p>
-}}}
-
-[[RepositoryIndex(format=table,glob=sw/cryptlib)]]
-
-|| Clone `https://git.cryptech.is/sw/cryptlib.git` ||