mirror of https://github.com/zcash/zcash-blog.git
21 lines
2.8 KiB
Markdown
21 lines
2.8 KiB
Markdown
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---
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ID: 1584
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post_title: 'New Alpha Release: Terminology and Security'
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author: Sean Bowe
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post_excerpt: ""
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layout: post
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permalink: >
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https://blog.z.cash/new-alpha-release-terminology-and-security/
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published: true
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post_date: 2016-07-22 00:00:00
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---
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<p>Today, we deployed a new alpha release of the <a class="reference external" href="https://github.com/zcash">Zcash</a> reference implementation, <a class="reference external" href="https://github.com/zcash/zcash/releases/tag/v0.11.2.z7">v0.11.2.z7</a>, to the testnet. The new release includes the following changes <a class="footnote-reference" href="#id2" id="id1">[1]</a>:</p>
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<ol class="arabic simple"><li>The terminology of the RPC and internal code has been modified to reflect our
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protocol specification. (<a class="reference external" href="https://github.com/zcash/zcash/issues/1090">#1090</a>)</li>
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<li>We have forked libsnark and made a number of changes to improve security and performance. The public parameters have shrunk by about 35% and memory usage during JoinSplit creation has <a class="reference external" href="https://speed.z.cash/timeline/?exe=1&base=1%2B9&ben=memory+createjoinsplit&env=1&revs=50&equid=off&quarts=on&extr=on">improved</a> by several hundred megabytes. (<a class="reference external" href="https://github.com/zcash/zcash/pull/1104">#1104</a>)</li>
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<li>We have published <a class="reference external" href="https://github.com/zcash/zcash/blob/zc.v0.11.2.latest/doc/security-warnings.md">guidelines</a> about side-channel attacks and other security warnings.</li>
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<li>The alert key has been changed. (<a class="reference external" href="https://github.com/zcash/zcash/pull/1105">#1105</a>)</li>
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<li>A bug in the difficulty adjustment algorithm has been fixed. (<a class="reference external" href="https://github.com/zcash/zcash/pull/1124">#1124</a>)</li>
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</ol><p>We have changed protocol version numbers, which requires all old nodes to upgrade to continue to use the testnet network. However, we are not resetting the testnet blockchain for this release.</p>
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<p>To follow our progress, watch <a class="reference external" href="https://github.com/zcash/zcash/milestones">the github project</a> and <a class="reference external" href="https://forum.z.cash/">join the forum</a>. To get an email announcement when <a class="reference external" href="/sprout-roadmap/">Zcash Sprout</a> is ready, put your email address <a class="reference external" href="https://z.cash/#launch-notification">in here</a>.</p>
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<table class="docutils footnote" frame="void" id="id2" rules="none"><colgroup><col class="label"/><col/></colgroup><tbody valign="top"><tr><td class="label"><a class="fn-backref" href="#id1">[1]</a></td><td>For more specific detail, view our <a class="reference external" href="https://github.com/zcash/zcash/milestone/26?closed=1">z7 release</a> github milestone.</td></tr></tbody></table>
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