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<div class="title">opencoin-issuer-cpp - a C++ OpenCoin Issuer REST-API implementation </div> </div>
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<p><img src="https://github.com/OpenCoin/opencoin-issuer-cpp/actions/workflows/cmake.yaml/badge.svg" alt="build" style="pointer-events: none;" class="inline"/> <a href="https://github.com/OpenCoin/opencoin-issuer-cpp/actions/workflows/doxygen-gh-pages.yml"><img src="https://github.com/OpenCoin/opencoin-issuer-cpp/actions/workflows/doxygen-gh-pages.yml/badge.svg" alt="Documentation" style="pointer-events: none;" class="inline"/></a></p>
<h1><a class="anchor" id="autotoc_md0"></a>
opencoin issuer</h1>
<p>this is a C++ implementation of the <a href="https://opencoin.org/OpenCoin.html">opencoin protocol</a> done as mapping to some kind of REST interface.</p>
<p>As all issuer related interactions of the protocol follows a request/response mechanism we are able to map all of them to Http-Requests.</p>
<p>We decided to use POST-Requests in all cases, as the protocol uses JSON-formatted messages for requests.</p>
<p>The following table gives an overview of the mapping of requests to URLs:</p>
<table class="markdownTable">
<tr class="markdownTableHead">
<th class="markdownTableHeadLeft">Request </th><th class="markdownTableHeadLeft">URL </th><th class="markdownTableHeadLeft"><a class="el" href="structResponse.html">Response</a> </th><th class="markdownTableHeadLeft">C++ Interface Method </th></tr>
<tr class="markdownTableRowOdd">
<td class="markdownTableBodyLeft"><a class="el" href="structRequestCDDCSerial.html">RequestCDDCSerial</a> </td><td class="markdownTableBodyLeft">/cddc/serial </td><td class="markdownTableBodyLeft"><a class="el" href="structResponseCDDCSerial.html">ResponseCDDCSerial</a> </td><td class="markdownTableBodyLeft">cdd.cdd_serial of <a class="el" href="classModel.html#a50d7fc134c43bc28045a7993ff2f2ca5">Model::get_current_cddc()</a> </td></tr>
<tr class="markdownTableRowEven">
<td class="markdownTableBodyLeft"><a class="el" href="structRequestCDDC.html">RequestCDDC</a> </td><td class="markdownTableBodyLeft">/cddc </td><td class="markdownTableBodyLeft"><a class="el" href="structResponseCDDC.html">ResponseCDDC</a> </td><td class="markdownTableBodyLeft"><a class="el" href="classModel.html#a50d7fc134c43bc28045a7993ff2f2ca5">Model::get_current_cddc()</a> </td></tr>
<tr class="markdownTableRowOdd">
<td class="markdownTableBodyLeft"><a class="el" href="structRequestMKCs.html">RequestMKCs</a> </td><td class="markdownTableBodyLeft">/mkcs </td><td class="markdownTableBodyLeft"><a class="el" href="structResponseMKCs.html">ResponseMKCs</a> </td><td class="markdownTableBodyLeft"><a class="el" href="classModel.html#a022e8d797bf57d111a1ce5bd229f41ea">Model::getMKCs</a> </td></tr>
<tr class="markdownTableRowEven">
<td class="markdownTableBodyLeft"><a class="el" href="structRequestMint.html">RequestMint</a> </td><td class="markdownTableBodyLeft">/mint </td><td class="markdownTableBodyLeft"><a class="el" href="structResponseMint.html">ResponseMint</a> </td><td class="markdownTableBodyLeft"><a class="el" href="classModel.html#a0ece13ffd6258825feaaa884247ca6e2">Model::mint</a> </td></tr>
<tr class="markdownTableRowOdd">
<td class="markdownTableBodyLeft"><a class="el" href="structRequestRenew.html">RequestRenew</a> </td><td class="markdownTableBodyLeft">/renew </td><td class="markdownTableBodyLeft"><a class="el" href="structResponseMint.html">ResponseMint</a> or <a class="el" href="structResponseDelay.html">ResponseDelay</a> </td><td class="markdownTableBodyLeft">? </td></tr>
<tr class="markdownTableRowEven">
<td class="markdownTableBodyLeft"><a class="el" href="structRequestResume.html">RequestResume</a> </td><td class="markdownTableBodyLeft">/resume </td><td class="markdownTableBodyLeft"><a class="el" href="structResponseMint.html">ResponseMint</a> or <a class="el" href="structResponseDelay.html">ResponseDelay</a> </td><td class="markdownTableBodyLeft">? </td></tr>
<tr class="markdownTableRowOdd">
<td class="markdownTableBodyLeft"><a class="el" href="structRequestRedeem.html">RequestRedeem</a> </td><td class="markdownTableBodyLeft">/redeem </td><td class="markdownTableBodyLeft"><a class="el" href="structResponseRedeem.html">ResponseRedeem</a> </td><td class="markdownTableBodyLeft"><a class="el" href="classModel.html#a14ae6086fd6ccc2dc34714c2f976258a">Model::redeem</a> </td></tr>
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<p>actually the implementation is a work in progress.</p>
<h2><a class="anchor" id="autotoc_md1"></a>
TODO</h2>
<ul>
<li>[ ] select crypto library<ul>
<li><a href="https://en.wikipedia.org/wiki/Comparison_of_cryptography_libraries">https://en.wikipedia.org/wiki/Comparison_of_cryptography_libraries</a></li>
</ul>
</li>
<li>[ ] blinding utilizing crypto++</li>
<li>[ ] integrate session and login to make transactions account based</li>
<li>[ ] bookkeeping for accounts</li>
</ul>
<h2><a class="anchor" id="autotoc_md2"></a>
Protocol Questions</h2>
<ul>
<li>What is signed as cdd - only the content of the cdd item with curly braces or also the key?</li>
<li>the weighted URL as array has a different js encoding as other elements</li>
<li>Clarify PSS usage (see <a href="https://crypto.stackexchange.com/questions/12707/usability-of-padding-scheme-in-blinded-rsa-signature">https://crypto.stackexchange.com/questions/12707/usability-of-padding-scheme-in-blinded-rsa-signature</a>)</li>
</ul>
<h3><a class="anchor" id="autotoc_md3"></a>
Blinding Notes</h3>
<p><a href="https://stackoverflow.com/questions/47860570/how-to-create-and-verify-blind-rsa-signatures-with-crypto">https://stackoverflow.com/questions/47860570/how-to-create-and-verify-blind-rsa-signatures-with-crypto</a></p>
<p><a href="https://crypto.stackexchange.com/questions/12707/usability-of-padding-scheme-in-blinded-rsa-signature">https://crypto.stackexchange.com/questions/12707/usability-of-padding-scheme-in-blinded-rsa-signature</a></p>
<p><a href="https://crypto.stackexchange.com/questions/54085/is-there-a-standard-padding-format-for-rsa-blind-signatures/60728#60728">https://crypto.stackexchange.com/questions/54085/is-there-a-standard-padding-format-for-rsa-blind-signatures/60728#60728</a> <a href="https://crypto.stackexchange.com/questions/5626/rsa-blind-signatures-in-practice">https://crypto.stackexchange.com/questions/5626/rsa-blind-signatures-in-practice</a></p>
<p><a href="https://cfrg.github.io/draft-irtf-cfrg-blind-signatures/draft-irtf-cfrg-rsa-blind-signatures.html">https://cfrg.github.io/draft-irtf-cfrg-blind-signatures/draft-irtf-cfrg-rsa-blind-signatures.html</a></p>
<p>alternative implementation using openssl <a href="https://github.com/jedisct1/blind-rsa-signatures">https://github.com/jedisct1/blind-rsa-signatures</a> </p>
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