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| <div class="title">schnorr.h</div> </div> |
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| <a href="schnorr_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/*</span></div> |
| <div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">Licensed to the Apache Software Foundation (ASF) under one</span></div> |
| <div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">or more contributor license agreements. See the NOTICE file</span></div> |
| <div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">distributed with this work for additional information</span></div> |
| <div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">regarding copyright ownership. The ASF licenses this file</span></div> |
| <div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment">to you under the Apache License, Version 2.0 (the</span></div> |
| <div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment">"License"); you may not use this file except in compliance</span></div> |
| <div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment">with the License. You may obtain a copy of the License at</span></div> |
| <div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"></span> </div> |
| <div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> http://www.apache.org/licenses/LICENSE-2.0</span></div> |
| <div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"></span> </div> |
| <div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment">Unless required by applicable law or agreed to in writing,</span></div> |
| <div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment">software distributed under the License is distributed on an</span></div> |
| <div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment">"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY</span></div> |
| <div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment">KIND, either express or implied. See the License for the</span></div> |
| <div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment">specific language governing permissions and limitations</span></div> |
| <div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment">under the License.</span></div> |
| <div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment">*/</span></div> |
| <div class="line"><a name="l00019"></a><span class="lineno"> 19</span>  </div> |
| <div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="preprocessor">#ifndef SCHNORR_H</span></div> |
| <div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="preprocessor">#define SCHNORR_H</span></div> |
| <div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  </div> |
| <div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor">#include "amcl/amcl.h"</span></div> |
| <div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor">#include "amcl/big_256_56.h"</span></div> |
| <div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor">#include "amcl/ecp_SECP256K1.h"</span></div> |
| <div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  </div> |
| <div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="preprocessor">#ifdef __cplusplus</span></div> |
| <div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="keyword">extern</span> <span class="stringliteral">"C"</span></div> |
| <div class="line"><a name="l00035"></a><span class="lineno"> 35</span> {</div> |
| <div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="preprocessor">#endif</span></div> |
| <div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  </div> |
| <div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="comment">/* Field size is assumed to be greater than or equal to group size */</span></div> |
| <div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  </div> |
| <div class="line"><a name="l00040"></a><span class="lineno"><a class="line" href="schnorr_8h.html#ab5bcf782e8f2fcd1404d5de3b85707fd"> 40</a></span> <span class="preprocessor">#define SGS_SECP256K1 MODBYTES_256_56 </span></div> |
| <div class="line"><a name="l00041"></a><span class="lineno"><a class="line" href="schnorr_8h.html#a9d25d694a29331ea767179901f8ae601"> 41</a></span> <span class="preprocessor">#define SFS_SECP256K1 MODBYTES_256_56 </span></div> |
| <div class="line"><a name="l00043"></a><span class="lineno"><a class="line" href="schnorr_8h.html#a88f5f29dd2b59260b70ffcbc5f44c326"> 43</a></span> <span class="preprocessor">#define SCHNORR_OK 0 </span></div> |
| <div class="line"><a name="l00044"></a><span class="lineno"><a class="line" href="schnorr_8h.html#a4a5402fd8a88039b3f9cad0f508eec31"> 44</a></span> <span class="preprocessor">#define SCHNORR_FAIL 51 </span></div> |
| <div class="line"><a name="l00045"></a><span class="lineno"><a class="line" href="schnorr_8h.html#aacf81adc639d9529432d969dca09eb71"> 45</a></span> <span class="preprocessor">#define SCHNORR_INVALID_ECP 52 </span></div> |
| <div class="line"><a name="l00053"></a><span class="lineno"><a class="line" href="schnorr_8h.html#ab8e7127fb5812f3592da6ebf08b57512"> 53</a></span> <span class="keyword">extern</span> <span class="keywordtype">void</span> <a class="code" href="schnorr_8h.html#ab8e7127fb5812f3592da6ebf08b57512">SCHNORR_random_challenge</a>(csprng *RNG, octet *E);</div> |
| <div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  </div> |
| <div class="line"><a name="l00055"></a><span class="lineno"> 55</span> <span class="comment">/* Classic Schnorr's proofs API */</span></div> |
| <div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  </div> |
| <div class="line"><a name="l00063"></a><span class="lineno"><a class="line" href="schnorr_8h.html#aa8b82a3a089695a803f100b4a861c59b"> 63</a></span> <span class="keyword">extern</span> <span class="keywordtype">void</span> <a class="code" href="schnorr_8h.html#aa8b82a3a089695a803f100b4a861c59b">SCHNORR_commit</a>(csprng *RNG, octet *R, octet *C);</div> |
| <div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  </div> |
| <div class="line"><a name="l00075"></a><span class="lineno"><a class="line" href="schnorr_8h.html#a743028db55e66f4d30699e72a1b0bf1f"> 75</a></span> <span class="keyword">extern</span> <span class="keywordtype">void</span> <a class="code" href="schnorr_8h.html#a743028db55e66f4d30699e72a1b0bf1f">SCHNORR_challenge</a>(<span class="keyword">const</span> octet *V, <span class="keyword">const</span> octet *C, <span class="keyword">const</span> octet *ID, <span class="keyword">const</span> octet *AD, octet *E);</div> |
| <div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  </div> |
| <div class="line"><a name="l00084"></a><span class="lineno"><a class="line" href="schnorr_8h.html#a874b17623254bc1701d1f25459770200"> 84</a></span> <span class="keyword">extern</span> <span class="keywordtype">void</span> <a class="code" href="schnorr_8h.html#a874b17623254bc1701d1f25459770200">SCHNORR_prove</a>(<span class="keyword">const</span> octet *R, <span class="keyword">const</span> octet *E, <span class="keyword">const</span> octet *X, octet *P);</div> |
| <div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  </div> |
| <div class="line"><a name="l00094"></a><span class="lineno"><a class="line" href="schnorr_8h.html#a5f6c493e5b3acdc97acb0af7a0389723"> 94</a></span> <span class="keyword">extern</span> <span class="keywordtype">int</span> <a class="code" href="schnorr_8h.html#a5f6c493e5b3acdc97acb0af7a0389723">SCHNORR_verify</a>(octet *V, octet *C, <span class="keyword">const</span> octet *E, <span class="keyword">const</span> octet *P);</div> |
| <div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  </div> |
| <div class="line"><a name="l00096"></a><span class="lineno"> 96</span> <span class="comment">/* Double Schnorr's proofs API */</span></div> |
| <div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  </div> |
| <div class="line"><a name="l00098"></a><span class="lineno"> 98</span> <span class="comment">// The double Schnorr Proof allows to prove knowledge of</span></div> |
| <div class="line"><a name="l00099"></a><span class="lineno"> 99</span> <span class="comment">// s,l s.t. V = s.R + l.G for some R ECP</span></div> |
| <div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  </div> |
| <div class="line"><a name="l00110"></a><span class="lineno"><a class="line" href="schnorr_8h.html#a20d267a63789b45faaf9b82018116268"> 110</a></span> <span class="keyword">extern</span> <span class="keywordtype">int</span> <a class="code" href="schnorr_8h.html#a20d267a63789b45faaf9b82018116268">SCHNORR_D_commit</a>(csprng *RNG, octet *R, octet *A, octet *B, octet *C);</div> |
| <div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  </div> |
| <div class="line"><a name="l00125"></a><span class="lineno"><a class="line" href="schnorr_8h.html#ad72917e4d1d2e9167c47062b4939dffb"> 125</a></span> <span class="keyword">extern</span> <span class="keywordtype">void</span> <a class="code" href="schnorr_8h.html#ad72917e4d1d2e9167c47062b4939dffb">SCHNORR_D_challenge</a>(<span class="keyword">const</span> octet *R, <span class="keyword">const</span> octet *V, <span class="keyword">const</span> octet *C, <span class="keyword">const</span> octet* ID, <span class="keyword">const</span> octet *AD, octet *E);</div> |
| <div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  </div> |
| <div class="line"><a name="l00137"></a><span class="lineno"><a class="line" href="schnorr_8h.html#a726141bddf04f630fe06e2f13a3d28e5"> 137</a></span> <span class="keyword">extern</span> <span class="keywordtype">void</span> <a class="code" href="schnorr_8h.html#a726141bddf04f630fe06e2f13a3d28e5">SCHNORR_D_prove</a>(<span class="keyword">const</span> octet *A, <span class="keyword">const</span> octet *B, <span class="keyword">const</span> octet *E, <span class="keyword">const</span> octet *S, <span class="keyword">const</span> octet *L, octet *T, octet *U);</div> |
| <div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  </div> |
| <div class="line"><a name="l00149"></a><span class="lineno"><a class="line" href="schnorr_8h.html#ab1c768caccc24700b28050962b603898"> 149</a></span> <span class="keyword">extern</span> <span class="keywordtype">int</span> <a class="code" href="schnorr_8h.html#ab1c768caccc24700b28050962b603898">SCHNORR_D_verify</a>(octet *R, octet *V, octet *C, <span class="keyword">const</span> octet *E, <span class="keyword">const</span> octet *T, <span class="keyword">const</span> octet *U);</div> |
| <div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  </div> |
| <div class="line"><a name="l00151"></a><span class="lineno"> 151</span> <span class="preprocessor">#ifdef __cplusplus</span></div> |
| <div class="line"><a name="l00152"></a><span class="lineno"> 152</span> }</div> |
| <div class="line"><a name="l00153"></a><span class="lineno"> 153</span> <span class="preprocessor">#endif</span></div> |
| <div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  </div> |
| <div class="line"><a name="l00155"></a><span class="lineno"> 155</span> <span class="preprocessor">#endif</span></div> |
| <div class="ttc" id="aschnorr_8h_html_a20d267a63789b45faaf9b82018116268"><div class="ttname"><a href="schnorr_8h.html#a20d267a63789b45faaf9b82018116268">SCHNORR_D_commit</a></div><div class="ttdeci">int SCHNORR_D_commit(csprng *RNG, octet *R, octet *A, octet *B, octet *C)</div><div class="ttdoc">Generate a commitment for the proof.</div></div> |
| <div class="ttc" id="aschnorr_8h_html_a5f6c493e5b3acdc97acb0af7a0389723"><div class="ttname"><a href="schnorr_8h.html#a5f6c493e5b3acdc97acb0af7a0389723">SCHNORR_verify</a></div><div class="ttdeci">int SCHNORR_verify(octet *V, octet *C, const octet *E, const octet *P)</div><div class="ttdoc">Verify the proof of knowledge for the DLOG.</div></div> |
| <div class="ttc" id="aschnorr_8h_html_a726141bddf04f630fe06e2f13a3d28e5"><div class="ttname"><a href="schnorr_8h.html#a726141bddf04f630fe06e2f13a3d28e5">SCHNORR_D_prove</a></div><div class="ttdeci">void SCHNORR_D_prove(const octet *A, const octet *B, const octet *E, const octet *S, const octet *L, octet *T, octet *U)</div><div class="ttdoc">Generate the proof for the given commitment and challenge.</div></div> |
| <div class="ttc" id="aschnorr_8h_html_a743028db55e66f4d30699e72a1b0bf1f"><div class="ttname"><a href="schnorr_8h.html#a743028db55e66f4d30699e72a1b0bf1f">SCHNORR_challenge</a></div><div class="ttdeci">void SCHNORR_challenge(const octet *V, const octet *C, const octet *ID, const octet *AD, octet *E)</div><div class="ttdoc">Generate the challenge for the proof.</div></div> |
| <div class="ttc" id="aschnorr_8h_html_a874b17623254bc1701d1f25459770200"><div class="ttname"><a href="schnorr_8h.html#a874b17623254bc1701d1f25459770200">SCHNORR_prove</a></div><div class="ttdeci">void SCHNORR_prove(const octet *R, const octet *E, const octet *X, octet *P)</div><div class="ttdoc">Generate the proof for the given commitment and challenge.</div></div> |
| <div class="ttc" id="aschnorr_8h_html_aa8b82a3a089695a803f100b4a861c59b"><div class="ttname"><a href="schnorr_8h.html#aa8b82a3a089695a803f100b4a861c59b">SCHNORR_commit</a></div><div class="ttdeci">void SCHNORR_commit(csprng *RNG, octet *R, octet *C)</div><div class="ttdoc">Generate a commitment for the proof.</div></div> |
| <div class="ttc" id="aschnorr_8h_html_ab1c768caccc24700b28050962b603898"><div class="ttname"><a href="schnorr_8h.html#ab1c768caccc24700b28050962b603898">SCHNORR_D_verify</a></div><div class="ttdeci">int SCHNORR_D_verify(octet *R, octet *V, octet *C, const octet *E, const octet *T, const octet *U)</div><div class="ttdoc">Verify the proof of knowledge for the DLOG.</div></div> |
| <div class="ttc" id="aschnorr_8h_html_ab8e7127fb5812f3592da6ebf08b57512"><div class="ttname"><a href="schnorr_8h.html#ab8e7127fb5812f3592da6ebf08b57512">SCHNORR_random_challenge</a></div><div class="ttdeci">void SCHNORR_random_challenge(csprng *RNG, octet *E)</div><div class="ttdoc">Generate random challenge for any Schnorr Proof.</div></div> |
| <div class="ttc" id="aschnorr_8h_html_ad72917e4d1d2e9167c47062b4939dffb"><div class="ttname"><a href="schnorr_8h.html#ad72917e4d1d2e9167c47062b4939dffb">SCHNORR_D_challenge</a></div><div class="ttdeci">void SCHNORR_D_challenge(const octet *R, const octet *V, const octet *C, const octet *ID, const octet *AD, octet *E)</div><div class="ttdoc">Generate the challenge for the proof.</div></div> |
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