| <!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Source of the Rust file `/root/.cargo/registry/src/github.com-1ecc6299db9ec823/rustls-0.19.1/src/client/tls12.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>tls12.rs - source</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceSerif4-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../FiraSans-Regular.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../FiraSans-Medium.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceCodePro-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceSerif4-Bold.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceCodePro-Semibold.ttf.woff2"><link rel="stylesheet" href="../../../normalize.css"><link rel="stylesheet" href="../../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" href="../../../ayu.css" disabled><link rel="stylesheet" href="../../../dark.css" disabled><link rel="stylesheet" href="../../../light.css" id="themeStyle"><script id="default-settings" ></script><script src="../../../storage.js"></script><script defer src="../../../source-script.js"></script><script defer src="../../../source-files.js"></script><script defer src="../../../main.js"></script><noscript><link rel="stylesheet" href="../../../noscript.css"></noscript><link rel="alternate icon" type="image/png" href="../../../favicon-16x16.png"><link rel="alternate icon" type="image/png" href="../../../favicon-32x32.png"><link rel="icon" type="image/svg+xml" href="../../../favicon.svg"></head><body class="rustdoc source"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><a class="sidebar-logo" href="../../../rustls/index.html"><div class="logo-container"><img class="rust-logo" src="../../../rust-logo.svg" alt="logo"></div></a></nav><main><div class="width-limiter"><nav class="sub"><a class="sub-logo-container" href="../../../rustls/index.html"><img class="rust-logo" src="../../../rust-logo.svg" alt="logo"></a><form class="search-form"><div class="search-container"><span></span><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" title="help" tabindex="-1"><a href="../../../help.html">?</a></div><div id="settings-menu" tabindex="-1"><a href="../../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../../wheel.svg"></a></div></div></form></nav><section id="main-content" class="content"><div class="example-wrap"><pre class="src-line-numbers"><span id="1">1</span> |
| <span id="2">2</span> |
| <span id="3">3</span> |
| <span id="4">4</span> |
| <span id="5">5</span> |
| <span id="6">6</span> |
| <span id="7">7</span> |
| <span id="8">8</span> |
| <span id="9">9</span> |
| <span id="10">10</span> |
| <span id="11">11</span> |
| <span id="12">12</span> |
| <span id="13">13</span> |
| <span id="14">14</span> |
| <span id="15">15</span> |
| <span id="16">16</span> |
| <span id="17">17</span> |
| <span id="18">18</span> |
| <span id="19">19</span> |
| <span id="20">20</span> |
| <span id="21">21</span> |
| <span id="22">22</span> |
| <span id="23">23</span> |
| <span id="24">24</span> |
| <span id="25">25</span> |
| <span id="26">26</span> |
| <span id="27">27</span> |
| <span id="28">28</span> |
| <span id="29">29</span> |
| <span id="30">30</span> |
| <span id="31">31</span> |
| <span id="32">32</span> |
| <span id="33">33</span> |
| <span id="34">34</span> |
| <span id="35">35</span> |
| <span id="36">36</span> |
| <span id="37">37</span> |
| <span id="38">38</span> |
| <span id="39">39</span> |
| <span id="40">40</span> |
| <span id="41">41</span> |
| <span id="42">42</span> |
| <span id="43">43</span> |
| <span id="44">44</span> |
| <span id="45">45</span> |
| <span id="46">46</span> |
| <span id="47">47</span> |
| <span id="48">48</span> |
| <span id="49">49</span> |
| <span id="50">50</span> |
| <span id="51">51</span> |
| <span id="52">52</span> |
| <span id="53">53</span> |
| <span id="54">54</span> |
| <span id="55">55</span> |
| <span id="56">56</span> |
| <span id="57">57</span> |
| <span id="58">58</span> |
| <span id="59">59</span> |
| <span id="60">60</span> |
| <span id="61">61</span> |
| <span id="62">62</span> |
| <span id="63">63</span> |
| <span id="64">64</span> |
| <span id="65">65</span> |
| <span id="66">66</span> |
| <span id="67">67</span> |
| <span id="68">68</span> |
| <span id="69">69</span> |
| <span id="70">70</span> |
| <span id="71">71</span> |
| <span id="72">72</span> |
| <span id="73">73</span> |
| <span id="74">74</span> |
| <span id="75">75</span> |
| <span id="76">76</span> |
| <span id="77">77</span> |
| <span id="78">78</span> |
| <span id="79">79</span> |
| <span id="80">80</span> |
| <span id="81">81</span> |
| <span id="82">82</span> |
| <span id="83">83</span> |
| <span id="84">84</span> |
| <span id="85">85</span> |
| <span id="86">86</span> |
| <span id="87">87</span> |
| <span id="88">88</span> |
| <span id="89">89</span> |
| <span id="90">90</span> |
| <span id="91">91</span> |
| <span id="92">92</span> |
| <span id="93">93</span> |
| <span id="94">94</span> |
| <span id="95">95</span> |
| <span id="96">96</span> |
| <span id="97">97</span> |
| <span id="98">98</span> |
| <span id="99">99</span> |
| <span id="100">100</span> |
| <span id="101">101</span> |
| <span id="102">102</span> |
| <span id="103">103</span> |
| <span id="104">104</span> |
| <span id="105">105</span> |
| <span id="106">106</span> |
| <span id="107">107</span> |
| <span id="108">108</span> |
| <span id="109">109</span> |
| <span id="110">110</span> |
| <span id="111">111</span> |
| <span id="112">112</span> |
| <span id="113">113</span> |
| <span id="114">114</span> |
| <span id="115">115</span> |
| <span id="116">116</span> |
| <span id="117">117</span> |
| <span id="118">118</span> |
| <span id="119">119</span> |
| <span id="120">120</span> |
| <span id="121">121</span> |
| <span id="122">122</span> |
| <span id="123">123</span> |
| <span id="124">124</span> |
| <span id="125">125</span> |
| <span id="126">126</span> |
| <span id="127">127</span> |
| <span id="128">128</span> |
| <span id="129">129</span> |
| <span id="130">130</span> |
| <span id="131">131</span> |
| <span id="132">132</span> |
| <span id="133">133</span> |
| <span id="134">134</span> |
| <span id="135">135</span> |
| <span id="136">136</span> |
| <span id="137">137</span> |
| <span id="138">138</span> |
| <span id="139">139</span> |
| <span id="140">140</span> |
| <span id="141">141</span> |
| <span id="142">142</span> |
| <span id="143">143</span> |
| <span id="144">144</span> |
| <span id="145">145</span> |
| <span id="146">146</span> |
| <span id="147">147</span> |
| <span id="148">148</span> |
| <span id="149">149</span> |
| <span id="150">150</span> |
| <span id="151">151</span> |
| <span id="152">152</span> |
| <span id="153">153</span> |
| <span id="154">154</span> |
| <span id="155">155</span> |
| <span id="156">156</span> |
| <span id="157">157</span> |
| <span id="158">158</span> |
| <span id="159">159</span> |
| <span id="160">160</span> |
| <span id="161">161</span> |
| <span id="162">162</span> |
| <span id="163">163</span> |
| <span id="164">164</span> |
| <span id="165">165</span> |
| <span id="166">166</span> |
| <span id="167">167</span> |
| <span id="168">168</span> |
| <span id="169">169</span> |
| <span id="170">170</span> |
| <span id="171">171</span> |
| <span id="172">172</span> |
| <span id="173">173</span> |
| <span id="174">174</span> |
| <span id="175">175</span> |
| <span id="176">176</span> |
| <span id="177">177</span> |
| <span id="178">178</span> |
| <span id="179">179</span> |
| <span id="180">180</span> |
| <span id="181">181</span> |
| <span id="182">182</span> |
| <span id="183">183</span> |
| <span id="184">184</span> |
| <span id="185">185</span> |
| <span id="186">186</span> |
| <span id="187">187</span> |
| <span id="188">188</span> |
| <span id="189">189</span> |
| <span id="190">190</span> |
| <span id="191">191</span> |
| <span id="192">192</span> |
| <span id="193">193</span> |
| <span id="194">194</span> |
| <span id="195">195</span> |
| <span id="196">196</span> |
| <span id="197">197</span> |
| <span id="198">198</span> |
| <span id="199">199</span> |
| <span id="200">200</span> |
| <span id="201">201</span> |
| <span id="202">202</span> |
| <span id="203">203</span> |
| <span id="204">204</span> |
| <span id="205">205</span> |
| <span id="206">206</span> |
| <span id="207">207</span> |
| <span id="208">208</span> |
| <span id="209">209</span> |
| <span id="210">210</span> |
| <span id="211">211</span> |
| <span id="212">212</span> |
| <span id="213">213</span> |
| <span id="214">214</span> |
| <span id="215">215</span> |
| <span id="216">216</span> |
| <span id="217">217</span> |
| <span id="218">218</span> |
| <span id="219">219</span> |
| <span id="220">220</span> |
| <span id="221">221</span> |
| <span id="222">222</span> |
| <span id="223">223</span> |
| <span id="224">224</span> |
| <span id="225">225</span> |
| <span id="226">226</span> |
| <span id="227">227</span> |
| <span id="228">228</span> |
| <span id="229">229</span> |
| <span id="230">230</span> |
| <span id="231">231</span> |
| <span id="232">232</span> |
| <span id="233">233</span> |
| <span id="234">234</span> |
| <span id="235">235</span> |
| <span id="236">236</span> |
| <span id="237">237</span> |
| <span id="238">238</span> |
| <span id="239">239</span> |
| <span id="240">240</span> |
| <span id="241">241</span> |
| <span id="242">242</span> |
| <span id="243">243</span> |
| <span id="244">244</span> |
| <span id="245">245</span> |
| <span id="246">246</span> |
| <span id="247">247</span> |
| <span id="248">248</span> |
| <span id="249">249</span> |
| <span id="250">250</span> |
| <span id="251">251</span> |
| <span id="252">252</span> |
| <span id="253">253</span> |
| <span id="254">254</span> |
| <span id="255">255</span> |
| <span id="256">256</span> |
| <span id="257">257</span> |
| <span id="258">258</span> |
| <span id="259">259</span> |
| <span id="260">260</span> |
| <span id="261">261</span> |
| <span id="262">262</span> |
| <span id="263">263</span> |
| <span id="264">264</span> |
| <span id="265">265</span> |
| <span id="266">266</span> |
| <span id="267">267</span> |
| <span id="268">268</span> |
| <span id="269">269</span> |
| <span id="270">270</span> |
| <span id="271">271</span> |
| <span id="272">272</span> |
| <span id="273">273</span> |
| <span id="274">274</span> |
| <span id="275">275</span> |
| <span id="276">276</span> |
| <span id="277">277</span> |
| <span id="278">278</span> |
| <span id="279">279</span> |
| <span id="280">280</span> |
| <span id="281">281</span> |
| <span id="282">282</span> |
| <span id="283">283</span> |
| <span id="284">284</span> |
| <span id="285">285</span> |
| <span id="286">286</span> |
| <span id="287">287</span> |
| <span id="288">288</span> |
| <span id="289">289</span> |
| <span id="290">290</span> |
| <span id="291">291</span> |
| <span id="292">292</span> |
| <span id="293">293</span> |
| <span id="294">294</span> |
| <span id="295">295</span> |
| <span id="296">296</span> |
| <span id="297">297</span> |
| <span id="298">298</span> |
| <span id="299">299</span> |
| <span id="300">300</span> |
| <span id="301">301</span> |
| <span id="302">302</span> |
| <span id="303">303</span> |
| <span id="304">304</span> |
| <span id="305">305</span> |
| <span id="306">306</span> |
| <span id="307">307</span> |
| <span id="308">308</span> |
| <span id="309">309</span> |
| <span id="310">310</span> |
| <span id="311">311</span> |
| <span id="312">312</span> |
| <span id="313">313</span> |
| <span id="314">314</span> |
| <span id="315">315</span> |
| <span id="316">316</span> |
| <span id="317">317</span> |
| <span id="318">318</span> |
| <span id="319">319</span> |
| <span id="320">320</span> |
| <span id="321">321</span> |
| <span id="322">322</span> |
| <span id="323">323</span> |
| <span id="324">324</span> |
| <span id="325">325</span> |
| <span id="326">326</span> |
| <span id="327">327</span> |
| <span id="328">328</span> |
| <span id="329">329</span> |
| <span id="330">330</span> |
| <span id="331">331</span> |
| <span id="332">332</span> |
| <span id="333">333</span> |
| <span id="334">334</span> |
| <span id="335">335</span> |
| <span id="336">336</span> |
| <span id="337">337</span> |
| <span id="338">338</span> |
| <span id="339">339</span> |
| <span id="340">340</span> |
| <span id="341">341</span> |
| <span id="342">342</span> |
| <span id="343">343</span> |
| <span id="344">344</span> |
| <span id="345">345</span> |
| <span id="346">346</span> |
| <span id="347">347</span> |
| <span id="348">348</span> |
| <span id="349">349</span> |
| <span id="350">350</span> |
| <span id="351">351</span> |
| <span id="352">352</span> |
| <span id="353">353</span> |
| <span id="354">354</span> |
| <span id="355">355</span> |
| <span id="356">356</span> |
| <span id="357">357</span> |
| <span id="358">358</span> |
| <span id="359">359</span> |
| <span id="360">360</span> |
| <span id="361">361</span> |
| <span id="362">362</span> |
| <span id="363">363</span> |
| <span id="364">364</span> |
| <span id="365">365</span> |
| <span id="366">366</span> |
| <span id="367">367</span> |
| <span id="368">368</span> |
| <span id="369">369</span> |
| <span id="370">370</span> |
| <span id="371">371</span> |
| <span id="372">372</span> |
| <span id="373">373</span> |
| <span id="374">374</span> |
| <span id="375">375</span> |
| <span id="376">376</span> |
| <span id="377">377</span> |
| <span id="378">378</span> |
| <span id="379">379</span> |
| <span id="380">380</span> |
| <span id="381">381</span> |
| <span id="382">382</span> |
| <span id="383">383</span> |
| <span id="384">384</span> |
| <span id="385">385</span> |
| <span id="386">386</span> |
| <span id="387">387</span> |
| <span id="388">388</span> |
| <span id="389">389</span> |
| <span id="390">390</span> |
| <span id="391">391</span> |
| <span id="392">392</span> |
| <span id="393">393</span> |
| <span id="394">394</span> |
| <span id="395">395</span> |
| <span id="396">396</span> |
| <span id="397">397</span> |
| <span id="398">398</span> |
| <span id="399">399</span> |
| <span id="400">400</span> |
| <span id="401">401</span> |
| <span id="402">402</span> |
| <span id="403">403</span> |
| <span id="404">404</span> |
| <span id="405">405</span> |
| <span id="406">406</span> |
| <span id="407">407</span> |
| <span id="408">408</span> |
| <span id="409">409</span> |
| <span id="410">410</span> |
| <span id="411">411</span> |
| <span id="412">412</span> |
| <span id="413">413</span> |
| <span id="414">414</span> |
| <span id="415">415</span> |
| <span id="416">416</span> |
| <span id="417">417</span> |
| <span id="418">418</span> |
| <span id="419">419</span> |
| <span id="420">420</span> |
| <span id="421">421</span> |
| <span id="422">422</span> |
| <span id="423">423</span> |
| <span id="424">424</span> |
| <span id="425">425</span> |
| <span id="426">426</span> |
| <span id="427">427</span> |
| <span id="428">428</span> |
| <span id="429">429</span> |
| <span id="430">430</span> |
| <span id="431">431</span> |
| <span id="432">432</span> |
| <span id="433">433</span> |
| <span id="434">434</span> |
| <span id="435">435</span> |
| <span id="436">436</span> |
| <span id="437">437</span> |
| <span id="438">438</span> |
| <span id="439">439</span> |
| <span id="440">440</span> |
| <span id="441">441</span> |
| <span id="442">442</span> |
| <span id="443">443</span> |
| <span id="444">444</span> |
| <span id="445">445</span> |
| <span id="446">446</span> |
| <span id="447">447</span> |
| <span id="448">448</span> |
| <span id="449">449</span> |
| <span id="450">450</span> |
| <span id="451">451</span> |
| <span id="452">452</span> |
| <span id="453">453</span> |
| <span id="454">454</span> |
| <span id="455">455</span> |
| <span id="456">456</span> |
| <span id="457">457</span> |
| <span id="458">458</span> |
| <span id="459">459</span> |
| <span id="460">460</span> |
| <span id="461">461</span> |
| <span id="462">462</span> |
| <span id="463">463</span> |
| <span id="464">464</span> |
| <span id="465">465</span> |
| <span id="466">466</span> |
| <span id="467">467</span> |
| <span id="468">468</span> |
| <span id="469">469</span> |
| <span id="470">470</span> |
| <span id="471">471</span> |
| <span id="472">472</span> |
| <span id="473">473</span> |
| <span id="474">474</span> |
| <span id="475">475</span> |
| <span id="476">476</span> |
| <span id="477">477</span> |
| <span id="478">478</span> |
| <span id="479">479</span> |
| <span id="480">480</span> |
| <span id="481">481</span> |
| <span id="482">482</span> |
| <span id="483">483</span> |
| <span id="484">484</span> |
| <span id="485">485</span> |
| <span id="486">486</span> |
| <span id="487">487</span> |
| <span id="488">488</span> |
| <span id="489">489</span> |
| <span id="490">490</span> |
| <span id="491">491</span> |
| <span id="492">492</span> |
| <span id="493">493</span> |
| <span id="494">494</span> |
| <span id="495">495</span> |
| <span id="496">496</span> |
| <span id="497">497</span> |
| <span id="498">498</span> |
| <span id="499">499</span> |
| <span id="500">500</span> |
| <span id="501">501</span> |
| <span id="502">502</span> |
| <span id="503">503</span> |
| <span id="504">504</span> |
| <span id="505">505</span> |
| <span id="506">506</span> |
| <span id="507">507</span> |
| <span id="508">508</span> |
| <span id="509">509</span> |
| <span id="510">510</span> |
| <span id="511">511</span> |
| <span id="512">512</span> |
| <span id="513">513</span> |
| <span id="514">514</span> |
| <span id="515">515</span> |
| <span id="516">516</span> |
| <span id="517">517</span> |
| <span id="518">518</span> |
| <span id="519">519</span> |
| <span id="520">520</span> |
| <span id="521">521</span> |
| <span id="522">522</span> |
| <span id="523">523</span> |
| <span id="524">524</span> |
| <span id="525">525</span> |
| <span id="526">526</span> |
| <span id="527">527</span> |
| <span id="528">528</span> |
| <span id="529">529</span> |
| <span id="530">530</span> |
| <span id="531">531</span> |
| <span id="532">532</span> |
| <span id="533">533</span> |
| <span id="534">534</span> |
| <span id="535">535</span> |
| <span id="536">536</span> |
| <span id="537">537</span> |
| <span id="538">538</span> |
| <span id="539">539</span> |
| <span id="540">540</span> |
| <span id="541">541</span> |
| <span id="542">542</span> |
| <span id="543">543</span> |
| <span id="544">544</span> |
| <span id="545">545</span> |
| <span id="546">546</span> |
| <span id="547">547</span> |
| <span id="548">548</span> |
| <span id="549">549</span> |
| <span id="550">550</span> |
| <span id="551">551</span> |
| <span id="552">552</span> |
| <span id="553">553</span> |
| <span id="554">554</span> |
| <span id="555">555</span> |
| <span id="556">556</span> |
| <span id="557">557</span> |
| <span id="558">558</span> |
| <span id="559">559</span> |
| <span id="560">560</span> |
| <span id="561">561</span> |
| <span id="562">562</span> |
| <span id="563">563</span> |
| <span id="564">564</span> |
| <span id="565">565</span> |
| <span id="566">566</span> |
| <span id="567">567</span> |
| <span id="568">568</span> |
| <span id="569">569</span> |
| <span id="570">570</span> |
| <span id="571">571</span> |
| <span id="572">572</span> |
| <span id="573">573</span> |
| <span id="574">574</span> |
| <span id="575">575</span> |
| <span id="576">576</span> |
| <span id="577">577</span> |
| <span id="578">578</span> |
| <span id="579">579</span> |
| <span id="580">580</span> |
| <span id="581">581</span> |
| <span id="582">582</span> |
| <span id="583">583</span> |
| <span id="584">584</span> |
| <span id="585">585</span> |
| <span id="586">586</span> |
| <span id="587">587</span> |
| <span id="588">588</span> |
| <span id="589">589</span> |
| <span id="590">590</span> |
| <span id="591">591</span> |
| <span id="592">592</span> |
| <span id="593">593</span> |
| <span id="594">594</span> |
| <span id="595">595</span> |
| <span id="596">596</span> |
| <span id="597">597</span> |
| <span id="598">598</span> |
| <span id="599">599</span> |
| <span id="600">600</span> |
| <span id="601">601</span> |
| <span id="602">602</span> |
| <span id="603">603</span> |
| <span id="604">604</span> |
| <span id="605">605</span> |
| <span id="606">606</span> |
| <span id="607">607</span> |
| <span id="608">608</span> |
| <span id="609">609</span> |
| <span id="610">610</span> |
| <span id="611">611</span> |
| <span id="612">612</span> |
| <span id="613">613</span> |
| <span id="614">614</span> |
| <span id="615">615</span> |
| <span id="616">616</span> |
| <span id="617">617</span> |
| <span id="618">618</span> |
| <span id="619">619</span> |
| <span id="620">620</span> |
| <span id="621">621</span> |
| <span id="622">622</span> |
| <span id="623">623</span> |
| <span id="624">624</span> |
| <span id="625">625</span> |
| <span id="626">626</span> |
| <span id="627">627</span> |
| <span id="628">628</span> |
| <span id="629">629</span> |
| <span id="630">630</span> |
| <span id="631">631</span> |
| <span id="632">632</span> |
| <span id="633">633</span> |
| <span id="634">634</span> |
| <span id="635">635</span> |
| <span id="636">636</span> |
| <span id="637">637</span> |
| <span id="638">638</span> |
| <span id="639">639</span> |
| <span id="640">640</span> |
| <span id="641">641</span> |
| <span id="642">642</span> |
| <span id="643">643</span> |
| <span id="644">644</span> |
| <span id="645">645</span> |
| <span id="646">646</span> |
| <span id="647">647</span> |
| <span id="648">648</span> |
| <span id="649">649</span> |
| <span id="650">650</span> |
| <span id="651">651</span> |
| <span id="652">652</span> |
| <span id="653">653</span> |
| <span id="654">654</span> |
| <span id="655">655</span> |
| <span id="656">656</span> |
| <span id="657">657</span> |
| <span id="658">658</span> |
| <span id="659">659</span> |
| <span id="660">660</span> |
| <span id="661">661</span> |
| <span id="662">662</span> |
| <span id="663">663</span> |
| <span id="664">664</span> |
| <span id="665">665</span> |
| <span id="666">666</span> |
| <span id="667">667</span> |
| <span id="668">668</span> |
| <span id="669">669</span> |
| <span id="670">670</span> |
| <span id="671">671</span> |
| <span id="672">672</span> |
| <span id="673">673</span> |
| <span id="674">674</span> |
| <span id="675">675</span> |
| <span id="676">676</span> |
| <span id="677">677</span> |
| <span id="678">678</span> |
| <span id="679">679</span> |
| <span id="680">680</span> |
| <span id="681">681</span> |
| <span id="682">682</span> |
| <span id="683">683</span> |
| <span id="684">684</span> |
| <span id="685">685</span> |
| <span id="686">686</span> |
| <span id="687">687</span> |
| <span id="688">688</span> |
| <span id="689">689</span> |
| <span id="690">690</span> |
| <span id="691">691</span> |
| <span id="692">692</span> |
| <span id="693">693</span> |
| <span id="694">694</span> |
| <span id="695">695</span> |
| <span id="696">696</span> |
| <span id="697">697</span> |
| <span id="698">698</span> |
| <span id="699">699</span> |
| <span id="700">700</span> |
| <span id="701">701</span> |
| <span id="702">702</span> |
| <span id="703">703</span> |
| <span id="704">704</span> |
| <span id="705">705</span> |
| <span id="706">706</span> |
| <span id="707">707</span> |
| <span id="708">708</span> |
| <span id="709">709</span> |
| <span id="710">710</span> |
| <span id="711">711</span> |
| <span id="712">712</span> |
| <span id="713">713</span> |
| <span id="714">714</span> |
| <span id="715">715</span> |
| <span id="716">716</span> |
| <span id="717">717</span> |
| <span id="718">718</span> |
| <span id="719">719</span> |
| <span id="720">720</span> |
| <span id="721">721</span> |
| <span id="722">722</span> |
| <span id="723">723</span> |
| <span id="724">724</span> |
| <span id="725">725</span> |
| <span id="726">726</span> |
| <span id="727">727</span> |
| <span id="728">728</span> |
| <span id="729">729</span> |
| <span id="730">730</span> |
| <span id="731">731</span> |
| <span id="732">732</span> |
| <span id="733">733</span> |
| <span id="734">734</span> |
| <span id="735">735</span> |
| <span id="736">736</span> |
| <span id="737">737</span> |
| <span id="738">738</span> |
| <span id="739">739</span> |
| <span id="740">740</span> |
| <span id="741">741</span> |
| <span id="742">742</span> |
| <span id="743">743</span> |
| <span id="744">744</span> |
| <span id="745">745</span> |
| <span id="746">746</span> |
| <span id="747">747</span> |
| <span id="748">748</span> |
| <span id="749">749</span> |
| <span id="750">750</span> |
| <span id="751">751</span> |
| <span id="752">752</span> |
| <span id="753">753</span> |
| <span id="754">754</span> |
| <span id="755">755</span> |
| <span id="756">756</span> |
| <span id="757">757</span> |
| <span id="758">758</span> |
| <span id="759">759</span> |
| <span id="760">760</span> |
| <span id="761">761</span> |
| <span id="762">762</span> |
| <span id="763">763</span> |
| <span id="764">764</span> |
| <span id="765">765</span> |
| <span id="766">766</span> |
| <span id="767">767</span> |
| <span id="768">768</span> |
| <span id="769">769</span> |
| <span id="770">770</span> |
| <span id="771">771</span> |
| <span id="772">772</span> |
| <span id="773">773</span> |
| <span id="774">774</span> |
| <span id="775">775</span> |
| <span id="776">776</span> |
| <span id="777">777</span> |
| <span id="778">778</span> |
| <span id="779">779</span> |
| <span id="780">780</span> |
| <span id="781">781</span> |
| <span id="782">782</span> |
| <span id="783">783</span> |
| <span id="784">784</span> |
| <span id="785">785</span> |
| <span id="786">786</span> |
| <span id="787">787</span> |
| <span id="788">788</span> |
| <span id="789">789</span> |
| <span id="790">790</span> |
| <span id="791">791</span> |
| <span id="792">792</span> |
| <span id="793">793</span> |
| <span id="794">794</span> |
| <span id="795">795</span> |
| <span id="796">796</span> |
| <span id="797">797</span> |
| <span id="798">798</span> |
| <span id="799">799</span> |
| <span id="800">800</span> |
| <span id="801">801</span> |
| <span id="802">802</span> |
| <span id="803">803</span> |
| <span id="804">804</span> |
| <span id="805">805</span> |
| <span id="806">806</span> |
| <span id="807">807</span> |
| <span id="808">808</span> |
| <span id="809">809</span> |
| <span id="810">810</span> |
| <span id="811">811</span> |
| <span id="812">812</span> |
| <span id="813">813</span> |
| <span id="814">814</span> |
| <span id="815">815</span> |
| <span id="816">816</span> |
| <span id="817">817</span> |
| <span id="818">818</span> |
| <span id="819">819</span> |
| <span id="820">820</span> |
| <span id="821">821</span> |
| <span id="822">822</span> |
| <span id="823">823</span> |
| <span id="824">824</span> |
| <span id="825">825</span> |
| <span id="826">826</span> |
| <span id="827">827</span> |
| <span id="828">828</span> |
| <span id="829">829</span> |
| <span id="830">830</span> |
| <span id="831">831</span> |
| <span id="832">832</span> |
| <span id="833">833</span> |
| <span id="834">834</span> |
| <span id="835">835</span> |
| <span id="836">836</span> |
| <span id="837">837</span> |
| <span id="838">838</span> |
| <span id="839">839</span> |
| <span id="840">840</span> |
| <span id="841">841</span> |
| <span id="842">842</span> |
| <span id="843">843</span> |
| <span id="844">844</span> |
| <span id="845">845</span> |
| <span id="846">846</span> |
| <span id="847">847</span> |
| <span id="848">848</span> |
| <span id="849">849</span> |
| <span id="850">850</span> |
| <span id="851">851</span> |
| <span id="852">852</span> |
| <span id="853">853</span> |
| <span id="854">854</span> |
| <span id="855">855</span> |
| <span id="856">856</span> |
| <span id="857">857</span> |
| <span id="858">858</span> |
| <span id="859">859</span> |
| <span id="860">860</span> |
| <span id="861">861</span> |
| <span id="862">862</span> |
| <span id="863">863</span> |
| <span id="864">864</span> |
| <span id="865">865</span> |
| </pre><pre class="rust"><code><span class="kw">use </span><span class="kw">crate</span>::check::check_message; |
| <span class="kw">use </span><span class="kw">crate</span>::client::ClientSessionImpl; |
| <span class="kw">use </span><span class="kw">crate</span>::error::TLSError; |
| <span class="attribute">#[cfg(feature = <span class="string">"logging"</span>)] |
| </span><span class="kw">use </span><span class="kw">crate</span>::log::{debug, trace}; |
| <span class="kw">use </span><span class="kw">crate</span>::msgs::base::{Payload, PayloadU8}; |
| <span class="kw">use </span><span class="kw">crate</span>::msgs::ccs::ChangeCipherSpecPayload; |
| <span class="kw">use </span><span class="kw">crate</span>::msgs::codec::Codec; |
| <span class="kw">use </span><span class="kw">crate</span>::msgs::enums::{AlertDescription, ProtocolVersion}; |
| <span class="kw">use </span><span class="kw">crate</span>::msgs::enums::{ContentType, HandshakeType}; |
| <span class="kw">use </span><span class="kw">crate</span>::msgs::handshake::DecomposedSignatureScheme; |
| <span class="kw">use </span><span class="kw">crate</span>::msgs::handshake::DigitallySignedStruct; |
| <span class="kw">use </span><span class="kw">crate</span>::msgs::handshake::ServerKeyExchangePayload; |
| <span class="kw">use </span><span class="kw">crate</span>::msgs::handshake::{HandshakeMessagePayload, HandshakePayload}; |
| <span class="kw">use </span><span class="kw">crate</span>::msgs::message::{Message, MessagePayload}; |
| <span class="kw">use </span><span class="kw">crate</span>::msgs::persist; |
| <span class="kw">use </span><span class="kw">crate</span>::session::SessionSecrets; |
| <span class="kw">use </span><span class="kw">crate</span>::suites; |
| <span class="kw">use </span><span class="kw">crate</span>::ticketer; |
| <span class="kw">use </span><span class="kw">crate</span>::verify; |
| |
| <span class="kw">use </span><span class="kw">crate</span>::client::common::{ClientAuthDetails, ReceivedTicketDetails}; |
| <span class="kw">use </span><span class="kw">crate</span>::client::common::{HandshakeDetails, ServerCertDetails, ServerKXDetails}; |
| <span class="kw">use </span><span class="kw">crate</span>::client::hs; |
| |
| <span class="kw">use </span>ring::constant_time; |
| <span class="kw">use </span>std::mem; |
| |
| <span class="kw">pub struct </span>ExpectCertificate { |
| <span class="kw">pub </span>handshake: HandshakeDetails, |
| <span class="kw">pub </span>server_cert: ServerCertDetails, |
| <span class="kw">pub </span>may_send_cert_status: bool, |
| <span class="kw">pub </span>must_issue_new_ticket: bool, |
| } |
| |
| <span class="kw">impl </span>ExpectCertificate { |
| <span class="kw">fn </span>into_expect_certificate_status_or_server_kx(<span class="self">self</span>) -> hs::NextState { |
| Box::new(ExpectCertificateStatusOrServerKX { |
| handshake: <span class="self">self</span>.handshake, |
| server_cert: <span class="self">self</span>.server_cert, |
| must_issue_new_ticket: <span class="self">self</span>.must_issue_new_ticket, |
| }) |
| } |
| |
| <span class="kw">fn </span>into_expect_server_kx(<span class="self">self</span>) -> hs::NextState { |
| Box::new(ExpectServerKX { |
| handshake: <span class="self">self</span>.handshake, |
| server_cert: <span class="self">self</span>.server_cert, |
| must_issue_new_ticket: <span class="self">self</span>.must_issue_new_ticket, |
| }) |
| } |
| } |
| |
| <span class="kw">impl </span>hs::State <span class="kw">for </span>ExpectCertificate { |
| <span class="kw">fn </span>handle( |
| <span class="kw-2">mut </span><span class="self">self</span>: Box<<span class="self">Self</span>>, |
| _sess: <span class="kw-2">&mut </span>ClientSessionImpl, |
| m: Message, |
| ) -> hs::NextStateOrError { |
| <span class="kw">let </span>cert_chain = |
| <span class="macro">require_handshake_msg!</span>(m, HandshakeType::Certificate, HandshakePayload::Certificate)<span class="question-mark">?</span>; |
| <span class="self">self</span>.handshake |
| .transcript |
| .add_message(<span class="kw-2">&</span>m); |
| |
| <span class="self">self</span>.server_cert.cert_chain = cert_chain.clone(); |
| |
| <span class="kw">if </span><span class="self">self</span>.may_send_cert_status { |
| <span class="prelude-val">Ok</span>(<span class="self">self</span>.into_expect_certificate_status_or_server_kx()) |
| } <span class="kw">else </span>{ |
| <span class="prelude-val">Ok</span>(<span class="self">self</span>.into_expect_server_kx()) |
| } |
| } |
| } |
| |
| <span class="kw">struct </span>ExpectCertificateStatus { |
| handshake: HandshakeDetails, |
| server_cert: ServerCertDetails, |
| must_issue_new_ticket: bool, |
| } |
| |
| <span class="kw">impl </span>ExpectCertificateStatus { |
| <span class="kw">fn </span>into_expect_server_kx(<span class="self">self</span>) -> hs::NextState { |
| Box::new(ExpectServerKX { |
| handshake: <span class="self">self</span>.handshake, |
| server_cert: <span class="self">self</span>.server_cert, |
| must_issue_new_ticket: <span class="self">self</span>.must_issue_new_ticket, |
| }) |
| } |
| } |
| |
| <span class="kw">impl </span>hs::State <span class="kw">for </span>ExpectCertificateStatus { |
| <span class="kw">fn </span>handle( |
| <span class="kw-2">mut </span><span class="self">self</span>: Box<<span class="self">Self</span>>, |
| _sess: <span class="kw-2">&mut </span>ClientSessionImpl, |
| m: Message, |
| ) -> hs::NextStateOrError { |
| <span class="self">self</span>.handshake |
| .transcript |
| .add_message(<span class="kw-2">&</span>m); |
| <span class="kw">let </span><span class="kw-2">mut </span>status = <span class="macro">require_handshake_msg_mut!</span>( |
| m, |
| HandshakeType::CertificateStatus, |
| HandshakePayload::CertificateStatus |
| )<span class="question-mark">?</span>; |
| |
| <span class="self">self</span>.server_cert.ocsp_response = status.take_ocsp_response(); |
| <span class="macro">trace!</span>( |
| <span class="string">"Server stapled OCSP response is {:?}"</span>, |
| <span class="self">self</span>.server_cert.ocsp_response |
| ); |
| <span class="prelude-val">Ok</span>(<span class="self">self</span>.into_expect_server_kx()) |
| } |
| } |
| |
| <span class="kw">struct </span>ExpectCertificateStatusOrServerKX { |
| handshake: HandshakeDetails, |
| server_cert: ServerCertDetails, |
| must_issue_new_ticket: bool, |
| } |
| |
| <span class="kw">impl </span>ExpectCertificateStatusOrServerKX { |
| <span class="kw">fn </span>into_expect_server_kx(<span class="self">self</span>) -> hs::NextState { |
| Box::new(ExpectServerKX { |
| handshake: <span class="self">self</span>.handshake, |
| server_cert: <span class="self">self</span>.server_cert, |
| must_issue_new_ticket: <span class="self">self</span>.must_issue_new_ticket, |
| }) |
| } |
| |
| <span class="kw">fn </span>into_expect_certificate_status(<span class="self">self</span>) -> hs::NextState { |
| Box::new(ExpectCertificateStatus { |
| handshake: <span class="self">self</span>.handshake, |
| server_cert: <span class="self">self</span>.server_cert, |
| must_issue_new_ticket: <span class="self">self</span>.must_issue_new_ticket, |
| }) |
| } |
| } |
| |
| <span class="kw">impl </span>hs::State <span class="kw">for </span>ExpectCertificateStatusOrServerKX { |
| <span class="kw">fn </span>handle(<span class="self">self</span>: Box<<span class="self">Self</span>>, sess: <span class="kw-2">&mut </span>ClientSessionImpl, m: Message) -> hs::NextStateOrError { |
| check_message( |
| <span class="kw-2">&</span>m, |
| <span class="kw-2">&</span>[ContentType::Handshake], |
| <span class="kw-2">&</span>[ |
| HandshakeType::ServerKeyExchange, |
| HandshakeType::CertificateStatus, |
| ], |
| )<span class="question-mark">?</span>; |
| <span class="kw">if </span>m.is_handshake_type(HandshakeType::ServerKeyExchange) { |
| <span class="self">self</span>.into_expect_server_kx() |
| .handle(sess, m) |
| } <span class="kw">else </span>{ |
| <span class="self">self</span>.into_expect_certificate_status() |
| .handle(sess, m) |
| } |
| } |
| } |
| |
| <span class="kw">struct </span>ExpectServerKX { |
| handshake: HandshakeDetails, |
| server_cert: ServerCertDetails, |
| must_issue_new_ticket: bool, |
| } |
| |
| <span class="kw">impl </span>ExpectServerKX { |
| <span class="kw">fn </span>into_expect_server_done_or_certreq(<span class="self">self</span>, skx: ServerKXDetails) -> hs::NextState { |
| Box::new(ExpectServerDoneOrCertReq { |
| handshake: <span class="self">self</span>.handshake, |
| server_cert: <span class="self">self</span>.server_cert, |
| server_kx: skx, |
| must_issue_new_ticket: <span class="self">self</span>.must_issue_new_ticket, |
| }) |
| } |
| } |
| |
| <span class="kw">impl </span>hs::State <span class="kw">for </span>ExpectServerKX { |
| <span class="kw">fn </span>handle( |
| <span class="kw-2">mut </span><span class="self">self</span>: Box<<span class="self">Self</span>>, |
| sess: <span class="kw-2">&mut </span>ClientSessionImpl, |
| m: Message, |
| ) -> hs::NextStateOrError { |
| <span class="kw">let </span>opaque_kx = <span class="macro">require_handshake_msg!</span>( |
| m, |
| HandshakeType::ServerKeyExchange, |
| HandshakePayload::ServerKeyExchange |
| )<span class="question-mark">?</span>; |
| <span class="kw">let </span>maybe_decoded_kx = opaque_kx.unwrap_given_kxa(<span class="kw-2">&</span>sess.common.get_suite_assert().kx); |
| <span class="self">self</span>.handshake |
| .transcript |
| .add_message(<span class="kw-2">&</span>m); |
| |
| <span class="kw">if </span>maybe_decoded_kx.is_none() { |
| sess.common |
| .send_fatal_alert(AlertDescription::DecodeError); |
| <span class="kw">return </span><span class="prelude-val">Err</span>(TLSError::CorruptMessagePayload(ContentType::Handshake)); |
| } |
| |
| <span class="kw">let </span>decoded_kx = maybe_decoded_kx.unwrap(); |
| |
| <span class="comment">// Save the signature and signed parameters for later verification. |
| </span><span class="kw">let </span><span class="kw-2">mut </span>kx_params = Vec::new(); |
| decoded_kx.encode_params(<span class="kw-2">&mut </span>kx_params); |
| <span class="kw">let </span>skx = ServerKXDetails::new(kx_params, decoded_kx.get_sig().unwrap()); |
| |
| <span class="attribute">#[cfg_attr(not(feature = <span class="string">"logging"</span>), allow(unused_variables))] |
| </span>{ |
| <span class="kw">if let </span>ServerKeyExchangePayload::ECDHE(ecdhe) = decoded_kx { |
| <span class="macro">debug!</span>(<span class="string">"ECDHE curve is {:?}"</span>, ecdhe.params.curve_params); |
| } |
| } |
| |
| <span class="prelude-val">Ok</span>(<span class="self">self</span>.into_expect_server_done_or_certreq(skx)) |
| } |
| } |
| |
| <span class="kw">fn </span>emit_certificate( |
| handshake: <span class="kw-2">&mut </span>HandshakeDetails, |
| client_auth: <span class="kw-2">&mut </span>ClientAuthDetails, |
| sess: <span class="kw-2">&mut </span>ClientSessionImpl, |
| ) { |
| <span class="kw">let </span>chosen_cert = client_auth.cert.take(); |
| |
| <span class="kw">let </span>cert = Message { |
| typ: ContentType::Handshake, |
| version: ProtocolVersion::TLSv1_2, |
| payload: MessagePayload::Handshake(HandshakeMessagePayload { |
| typ: HandshakeType::Certificate, |
| payload: HandshakePayload::Certificate(chosen_cert.unwrap_or_else(Vec::new)), |
| }), |
| }; |
| |
| handshake.transcript.add_message(<span class="kw-2">&</span>cert); |
| sess.common.send_msg(cert, <span class="bool-val">false</span>); |
| } |
| |
| <span class="kw">fn </span>emit_clientkx( |
| handshake: <span class="kw-2">&mut </span>HandshakeDetails, |
| sess: <span class="kw-2">&mut </span>ClientSessionImpl, |
| kxd: <span class="kw-2">&</span>suites::KeyExchangeResult, |
| ) { |
| <span class="kw">let </span><span class="kw-2">mut </span>buf = Vec::new(); |
| <span class="kw">let </span>ecpoint = PayloadU8::new(Vec::from(kxd.pubkey.as_ref())); |
| ecpoint.encode(<span class="kw-2">&mut </span>buf); |
| <span class="kw">let </span>pubkey = Payload::new(buf); |
| |
| <span class="kw">let </span>ckx = Message { |
| typ: ContentType::Handshake, |
| version: ProtocolVersion::TLSv1_2, |
| payload: MessagePayload::Handshake(HandshakeMessagePayload { |
| typ: HandshakeType::ClientKeyExchange, |
| payload: HandshakePayload::ClientKeyExchange(pubkey), |
| }), |
| }; |
| |
| handshake.transcript.add_message(<span class="kw-2">&</span>ckx); |
| sess.common.send_msg(ckx, <span class="bool-val">false</span>); |
| } |
| |
| <span class="kw">fn </span>emit_certverify( |
| handshake: <span class="kw-2">&mut </span>HandshakeDetails, |
| client_auth: <span class="kw-2">&mut </span>ClientAuthDetails, |
| sess: <span class="kw-2">&mut </span>ClientSessionImpl, |
| ) -> <span class="prelude-ty">Result</span><(), TLSError> { |
| <span class="kw">if </span>client_auth.signer.is_none() { |
| <span class="macro">trace!</span>(<span class="string">"Not sending CertificateVerify, no key"</span>); |
| handshake |
| .transcript |
| .abandon_client_auth(); |
| <span class="kw">return </span><span class="prelude-val">Ok</span>(()); |
| } |
| |
| <span class="kw">let </span>message = handshake |
| .transcript |
| .take_handshake_buf(); |
| <span class="kw">let </span>signer = client_auth.signer.take().unwrap(); |
| <span class="kw">let </span>scheme = signer.get_scheme(); |
| <span class="kw">let </span>sig = signer.sign(<span class="kw-2">&</span>message)<span class="question-mark">?</span>; |
| <span class="kw">let </span>body = DigitallySignedStruct::new(scheme, sig); |
| |
| <span class="kw">let </span>m = Message { |
| typ: ContentType::Handshake, |
| version: ProtocolVersion::TLSv1_2, |
| payload: MessagePayload::Handshake(HandshakeMessagePayload { |
| typ: HandshakeType::CertificateVerify, |
| payload: HandshakePayload::CertificateVerify(body), |
| }), |
| }; |
| |
| handshake.transcript.add_message(<span class="kw-2">&</span>m); |
| sess.common.send_msg(m, <span class="bool-val">false</span>); |
| <span class="prelude-val">Ok</span>(()) |
| } |
| |
| <span class="kw">fn </span>emit_ccs(sess: <span class="kw-2">&mut </span>ClientSessionImpl) { |
| <span class="kw">let </span>ccs = Message { |
| typ: ContentType::ChangeCipherSpec, |
| version: ProtocolVersion::TLSv1_2, |
| payload: MessagePayload::ChangeCipherSpec(ChangeCipherSpecPayload {}), |
| }; |
| |
| sess.common.send_msg(ccs, <span class="bool-val">false</span>); |
| } |
| |
| <span class="kw">fn </span>emit_finished( |
| secrets: <span class="kw-2">&</span>SessionSecrets, |
| handshake: <span class="kw-2">&mut </span>HandshakeDetails, |
| sess: <span class="kw-2">&mut </span>ClientSessionImpl, |
| ) { |
| <span class="kw">let </span>vh = handshake.transcript.get_current_hash(); |
| <span class="kw">let </span>verify_data = secrets.client_verify_data(<span class="kw-2">&</span>vh); |
| <span class="kw">let </span>verify_data_payload = Payload::new(verify_data); |
| |
| <span class="kw">let </span>f = Message { |
| typ: ContentType::Handshake, |
| version: ProtocolVersion::TLSv1_2, |
| payload: MessagePayload::Handshake(HandshakeMessagePayload { |
| typ: HandshakeType::Finished, |
| payload: HandshakePayload::Finished(verify_data_payload), |
| }), |
| }; |
| |
| handshake.transcript.add_message(<span class="kw-2">&</span>f); |
| sess.common.send_msg(f, <span class="bool-val">true</span>); |
| } |
| |
| <span class="comment">// --- Either a CertificateRequest, or a ServerHelloDone. --- |
| // Existence of the CertificateRequest tells us the server is asking for |
| // client auth. Otherwise we go straight to ServerHelloDone. |
| </span><span class="kw">struct </span>ExpectCertificateRequest { |
| handshake: HandshakeDetails, |
| server_cert: ServerCertDetails, |
| server_kx: ServerKXDetails, |
| must_issue_new_ticket: bool, |
| } |
| |
| <span class="kw">impl </span>ExpectCertificateRequest { |
| <span class="kw">fn </span>into_expect_server_done(<span class="self">self</span>, client_auth: ClientAuthDetails) -> hs::NextState { |
| Box::new(ExpectServerDone { |
| handshake: <span class="self">self</span>.handshake, |
| server_cert: <span class="self">self</span>.server_cert, |
| server_kx: <span class="self">self</span>.server_kx, |
| client_auth: <span class="prelude-val">Some</span>(client_auth), |
| must_issue_new_ticket: <span class="self">self</span>.must_issue_new_ticket, |
| }) |
| } |
| } |
| |
| <span class="kw">impl </span>hs::State <span class="kw">for </span>ExpectCertificateRequest { |
| <span class="kw">fn </span>handle( |
| <span class="kw-2">mut </span><span class="self">self</span>: Box<<span class="self">Self</span>>, |
| sess: <span class="kw-2">&mut </span>ClientSessionImpl, |
| m: Message, |
| ) -> hs::NextStateOrError { |
| <span class="kw">let </span>certreq = <span class="macro">require_handshake_msg!</span>( |
| m, |
| HandshakeType::CertificateRequest, |
| HandshakePayload::CertificateRequest |
| )<span class="question-mark">?</span>; |
| <span class="self">self</span>.handshake |
| .transcript |
| .add_message(<span class="kw-2">&</span>m); |
| <span class="macro">debug!</span>(<span class="string">"Got CertificateRequest {:?}"</span>, certreq); |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>client_auth = ClientAuthDetails::new(); |
| |
| <span class="comment">// The RFC jovially describes the design here as 'somewhat complicated' |
| // and 'somewhat underspecified'. So thanks for that. |
| // |
| // We ignore certreq.certtypes as a result, since the information it contains |
| // is entirely duplicated in certreq.sigschemes. |
| |
| </span><span class="kw">let </span>canames = certreq |
| .canames |
| .iter() |
| .map(|p| p.<span class="number">0</span>.as_slice()) |
| .collect::<Vec<<span class="kw-2">&</span>[u8]>>(); |
| <span class="kw">let </span>maybe_certkey = sess |
| .config |
| .client_auth_cert_resolver |
| .resolve(<span class="kw-2">&</span>canames, <span class="kw-2">&</span>certreq.sigschemes); |
| |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(<span class="kw-2">mut </span>certkey) = maybe_certkey { |
| <span class="kw">let </span>maybe_signer = certkey |
| .key |
| .choose_scheme(<span class="kw-2">&</span>certreq.sigschemes); |
| |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(<span class="kw">_</span>) = <span class="kw-2">&</span>maybe_signer { |
| <span class="macro">debug!</span>(<span class="string">"Attempting client auth"</span>); |
| client_auth.cert = <span class="prelude-val">Some</span>(certkey.take_cert()); |
| } |
| client_auth.signer = maybe_signer; |
| } <span class="kw">else </span>{ |
| <span class="macro">debug!</span>(<span class="string">"Client auth requested but no cert/sigscheme available"</span>); |
| } |
| |
| <span class="prelude-val">Ok</span>(<span class="self">self</span>.into_expect_server_done(client_auth)) |
| } |
| } |
| |
| <span class="kw">struct </span>ExpectServerDoneOrCertReq { |
| handshake: HandshakeDetails, |
| server_cert: ServerCertDetails, |
| server_kx: ServerKXDetails, |
| must_issue_new_ticket: bool, |
| } |
| |
| <span class="kw">impl </span>ExpectServerDoneOrCertReq { |
| <span class="kw">fn </span>into_expect_certificate_req(<span class="self">self</span>) -> hs::NextState { |
| Box::new(ExpectCertificateRequest { |
| handshake: <span class="self">self</span>.handshake, |
| server_cert: <span class="self">self</span>.server_cert, |
| server_kx: <span class="self">self</span>.server_kx, |
| must_issue_new_ticket: <span class="self">self</span>.must_issue_new_ticket, |
| }) |
| } |
| |
| <span class="kw">fn </span>into_expect_server_done(<span class="self">self</span>) -> hs::NextState { |
| Box::new(ExpectServerDone { |
| handshake: <span class="self">self</span>.handshake, |
| server_cert: <span class="self">self</span>.server_cert, |
| server_kx: <span class="self">self</span>.server_kx, |
| client_auth: <span class="prelude-val">None</span>, |
| must_issue_new_ticket: <span class="self">self</span>.must_issue_new_ticket, |
| }) |
| } |
| } |
| |
| <span class="kw">impl </span>hs::State <span class="kw">for </span>ExpectServerDoneOrCertReq { |
| <span class="kw">fn </span>handle( |
| <span class="kw-2">mut </span><span class="self">self</span>: Box<<span class="self">Self</span>>, |
| sess: <span class="kw-2">&mut </span>ClientSessionImpl, |
| m: Message, |
| ) -> hs::NextStateOrError { |
| <span class="kw">if </span><span class="macro">require_handshake_msg!</span>( |
| m, |
| HandshakeType::CertificateRequest, |
| HandshakePayload::CertificateRequest |
| ) |
| .is_ok() |
| { |
| <span class="self">self</span>.into_expect_certificate_req() |
| .handle(sess, m) |
| } <span class="kw">else </span>{ |
| <span class="self">self</span>.handshake |
| .transcript |
| .abandon_client_auth(); |
| <span class="self">self</span>.into_expect_server_done() |
| .handle(sess, m) |
| } |
| } |
| } |
| |
| <span class="kw">struct </span>ExpectServerDone { |
| handshake: HandshakeDetails, |
| server_cert: ServerCertDetails, |
| server_kx: ServerKXDetails, |
| client_auth: <span class="prelude-ty">Option</span><ClientAuthDetails>, |
| must_issue_new_ticket: bool, |
| } |
| |
| <span class="kw">impl </span>ExpectServerDone { |
| <span class="kw">fn </span>into_expect_new_ticket( |
| <span class="self">self</span>, |
| secrets: SessionSecrets, |
| certv: verify::ServerCertVerified, |
| sigv: verify::HandshakeSignatureValid, |
| ) -> hs::NextState { |
| Box::new(ExpectNewTicket { |
| secrets, |
| handshake: <span class="self">self</span>.handshake, |
| resuming: <span class="bool-val">false</span>, |
| cert_verified: certv, |
| sig_verified: sigv, |
| }) |
| } |
| |
| <span class="kw">fn </span>into_expect_ccs( |
| <span class="self">self</span>, |
| secrets: SessionSecrets, |
| certv: verify::ServerCertVerified, |
| sigv: verify::HandshakeSignatureValid, |
| ) -> hs::NextState { |
| Box::new(ExpectCCS { |
| secrets, |
| handshake: <span class="self">self</span>.handshake, |
| ticket: ReceivedTicketDetails::new(), |
| resuming: <span class="bool-val">false</span>, |
| cert_verified: certv, |
| sig_verified: sigv, |
| }) |
| } |
| } |
| |
| <span class="kw">impl </span>hs::State <span class="kw">for </span>ExpectServerDone { |
| <span class="kw">fn </span>handle(<span class="self">self</span>: Box<<span class="self">Self</span>>, sess: <span class="kw-2">&mut </span>ClientSessionImpl, m: Message) -> hs::NextStateOrError { |
| <span class="kw">let </span><span class="kw-2">mut </span>st = <span class="kw-2">*</span><span class="self">self</span>; |
| check_message( |
| <span class="kw-2">&</span>m, |
| <span class="kw-2">&</span>[ContentType::Handshake], |
| <span class="kw-2">&</span>[HandshakeType::ServerHelloDone], |
| )<span class="question-mark">?</span>; |
| st.handshake.transcript.add_message(<span class="kw-2">&</span>m); |
| |
| hs::check_aligned_handshake(sess)<span class="question-mark">?</span>; |
| |
| <span class="macro">trace!</span>(<span class="string">"Server cert is {:?}"</span>, st.server_cert.cert_chain); |
| <span class="macro">debug!</span>(<span class="string">"Server DNS name is {:?}"</span>, st.handshake.dns_name); |
| |
| <span class="comment">// 1. Verify the cert chain. |
| // 2. Verify any SCTs provided with the certificate. |
| // 3. Verify that the top certificate signed their kx. |
| // 4. If doing client auth, send our Certificate. |
| // 5. Complete the key exchange: |
| // a) generate our kx pair |
| // b) emit a ClientKeyExchange containing it |
| // c) if doing client auth, emit a CertificateVerify |
| // d) emit a CCS |
| // e) derive the shared keys, and start encryption |
| // 6. emit a Finished, our first encrypted message under the new keys. |
| |
| // 1. |
| </span><span class="kw">if </span>st.server_cert.cert_chain.is_empty() { |
| <span class="kw">return </span><span class="prelude-val">Err</span>(TLSError::NoCertificatesPresented); |
| } |
| |
| <span class="kw">let </span>certv = sess |
| .config |
| .get_verifier() |
| .verify_server_cert( |
| <span class="kw-2">&</span>sess.config.root_store, |
| <span class="kw-2">&</span>st.server_cert.cert_chain, |
| st.handshake.dns_name.as_ref(), |
| <span class="kw-2">&</span>st.server_cert.ocsp_response, |
| ) |
| .map_err(|err| hs::send_cert_error_alert(sess, err))<span class="question-mark">?</span>; |
| |
| <span class="comment">// 2. Verify any included SCTs. |
| </span><span class="kw">match </span>(st.server_cert.scts.as_ref(), sess.config.ct_logs) { |
| (<span class="prelude-val">Some</span>(scts), <span class="prelude-val">Some</span>(logs)) => { |
| verify::verify_scts(<span class="kw-2">&</span>st.server_cert.cert_chain[<span class="number">0</span>], scts, logs)<span class="question-mark">?</span>; |
| } |
| (<span class="kw">_</span>, <span class="kw">_</span>) => {} |
| } |
| |
| <span class="comment">// 3. |
| // Build up the contents of the signed message. |
| // It's ClientHello.random || ServerHello.random || ServerKeyExchange.params |
| </span><span class="kw">let </span>sigv = { |
| <span class="kw">let </span><span class="kw-2">mut </span>message = Vec::new(); |
| message.extend_from_slice(<span class="kw-2">&</span>st.handshake.randoms.client); |
| message.extend_from_slice(<span class="kw-2">&</span>st.handshake.randoms.server); |
| message.extend_from_slice(<span class="kw-2">&</span>st.server_kx.kx_params); |
| |
| <span class="comment">// Check the signature is compatible with the ciphersuite. |
| </span><span class="kw">let </span>sig = <span class="kw-2">&</span>st.server_kx.kx_sig; |
| <span class="kw">let </span>scs = sess.common.get_suite_assert(); |
| <span class="kw">if </span>!scs.usable_for_sigalg(sig.scheme.sign()) { |
| <span class="kw">let </span>error_message = <span class="macro">format!</span>( |
| <span class="string">"peer signed kx with wrong algorithm (got {:?} expect {:?})"</span>, |
| sig.scheme.sign(), |
| scs.sign |
| ); |
| <span class="kw">return </span><span class="prelude-val">Err</span>(TLSError::PeerMisbehavedError(error_message)); |
| } |
| |
| sess.config |
| .get_verifier() |
| .verify_tls12_signature(<span class="kw-2">&</span>message, <span class="kw-2">&</span>st.server_cert.cert_chain[<span class="number">0</span>], sig) |
| .map_err(|err| hs::send_cert_error_alert(sess, err))<span class="question-mark">? |
| </span>}; |
| sess.server_cert_chain = st.server_cert.take_chain(); |
| |
| <span class="comment">// 4. |
| </span><span class="kw">if </span>st.client_auth.is_some() { |
| emit_certificate(<span class="kw-2">&mut </span>st.handshake, st.client_auth.as_mut().unwrap(), sess); |
| } |
| |
| <span class="comment">// 5a. |
| </span><span class="kw">let </span>kxd = sess |
| .common |
| .get_suite_assert() |
| .do_client_kx(<span class="kw-2">&</span>st.server_kx.kx_params) |
| .ok_or_else(|| TLSError::PeerMisbehavedError(<span class="string">"key exchange failed"</span>.to_string()))<span class="question-mark">?</span>; |
| |
| <span class="comment">// 5b. |
| </span>emit_clientkx(<span class="kw-2">&mut </span>st.handshake, sess, <span class="kw-2">&</span>kxd); |
| <span class="comment">// nb. EMS handshake hash only runs up to ClientKeyExchange. |
| </span><span class="kw">let </span>handshake_hash = st |
| .handshake |
| .transcript |
| .get_current_hash(); |
| |
| <span class="comment">// 5c. |
| </span><span class="kw">if </span>st.client_auth.is_some() { |
| emit_certverify(<span class="kw-2">&mut </span>st.handshake, st.client_auth.as_mut().unwrap(), sess)<span class="question-mark">?</span>; |
| } |
| |
| <span class="comment">// 5d. |
| </span>emit_ccs(sess); |
| |
| <span class="comment">// 5e. Now commit secrets. |
| </span><span class="kw">let </span>hashalg = sess |
| .common |
| .get_suite_assert() |
| .get_hash(); |
| <span class="kw">let </span>secrets = <span class="kw">if </span>st.handshake.using_ems { |
| SessionSecrets::new_ems( |
| <span class="kw-2">&</span>st.handshake.randoms, |
| <span class="kw-2">&</span>handshake_hash, |
| hashalg, |
| <span class="kw-2">&</span>kxd.shared_secret, |
| ) |
| } <span class="kw">else </span>{ |
| SessionSecrets::new(<span class="kw-2">&</span>st.handshake.randoms, hashalg, <span class="kw-2">&</span>kxd.shared_secret) |
| }; |
| sess.config.key_log.log( |
| <span class="string">"CLIENT_RANDOM"</span>, |
| <span class="kw-2">&</span>secrets.randoms.client, |
| <span class="kw-2">&</span>secrets.master_secret, |
| ); |
| sess.common |
| .start_encryption_tls12(<span class="kw-2">&</span>secrets); |
| sess.common |
| .record_layer |
| .start_encrypting(); |
| |
| <span class="comment">// 6. |
| </span>emit_finished(<span class="kw-2">&</span>secrets, <span class="kw-2">&mut </span>st.handshake, sess); |
| |
| <span class="kw">if </span>st.must_issue_new_ticket { |
| <span class="prelude-val">Ok</span>(st.into_expect_new_ticket(secrets, certv, sigv)) |
| } <span class="kw">else </span>{ |
| <span class="prelude-val">Ok</span>(st.into_expect_ccs(secrets, certv, sigv)) |
| } |
| } |
| } |
| |
| <span class="comment">// -- Waiting for their CCS -- |
| </span><span class="kw">pub struct </span>ExpectCCS { |
| <span class="kw">pub </span>secrets: SessionSecrets, |
| <span class="kw">pub </span>handshake: HandshakeDetails, |
| <span class="kw">pub </span>ticket: ReceivedTicketDetails, |
| <span class="kw">pub </span>resuming: bool, |
| <span class="kw">pub </span>cert_verified: verify::ServerCertVerified, |
| <span class="kw">pub </span>sig_verified: verify::HandshakeSignatureValid, |
| } |
| |
| <span class="kw">impl </span>ExpectCCS { |
| <span class="kw">fn </span>into_expect_finished(<span class="self">self</span>) -> hs::NextState { |
| Box::new(ExpectFinished { |
| secrets: <span class="self">self</span>.secrets, |
| handshake: <span class="self">self</span>.handshake, |
| ticket: <span class="self">self</span>.ticket, |
| resuming: <span class="self">self</span>.resuming, |
| cert_verified: <span class="self">self</span>.cert_verified, |
| sig_verified: <span class="self">self</span>.sig_verified, |
| }) |
| } |
| } |
| |
| <span class="kw">impl </span>hs::State <span class="kw">for </span>ExpectCCS { |
| <span class="kw">fn </span>handle(<span class="self">self</span>: Box<<span class="self">Self</span>>, sess: <span class="kw-2">&mut </span>ClientSessionImpl, m: Message) -> hs::NextStateOrError { |
| check_message(<span class="kw-2">&</span>m, <span class="kw-2">&</span>[ContentType::ChangeCipherSpec], <span class="kw-2">&</span>[])<span class="question-mark">?</span>; |
| <span class="comment">// CCS should not be received interleaved with fragmented handshake-level |
| // message. |
| </span>hs::check_aligned_handshake(sess)<span class="question-mark">?</span>; |
| |
| <span class="comment">// nb. msgs layer validates trivial contents of CCS |
| </span>sess.common |
| .record_layer |
| .start_decrypting(); |
| |
| <span class="prelude-val">Ok</span>(<span class="self">self</span>.into_expect_finished()) |
| } |
| } |
| |
| <span class="kw">pub struct </span>ExpectNewTicket { |
| <span class="kw">pub </span>secrets: SessionSecrets, |
| <span class="kw">pub </span>handshake: HandshakeDetails, |
| <span class="kw">pub </span>resuming: bool, |
| <span class="kw">pub </span>cert_verified: verify::ServerCertVerified, |
| <span class="kw">pub </span>sig_verified: verify::HandshakeSignatureValid, |
| } |
| |
| <span class="kw">impl </span>ExpectNewTicket { |
| <span class="kw">fn </span>into_expect_ccs(<span class="self">self</span>, ticket: ReceivedTicketDetails) -> hs::NextState { |
| Box::new(ExpectCCS { |
| secrets: <span class="self">self</span>.secrets, |
| handshake: <span class="self">self</span>.handshake, |
| ticket, |
| resuming: <span class="self">self</span>.resuming, |
| cert_verified: <span class="self">self</span>.cert_verified, |
| sig_verified: <span class="self">self</span>.sig_verified, |
| }) |
| } |
| } |
| |
| <span class="kw">impl </span>hs::State <span class="kw">for </span>ExpectNewTicket { |
| <span class="kw">fn </span>handle( |
| <span class="kw-2">mut </span><span class="self">self</span>: Box<<span class="self">Self</span>>, |
| _sess: <span class="kw-2">&mut </span>ClientSessionImpl, |
| m: Message, |
| ) -> hs::NextStateOrError { |
| <span class="self">self</span>.handshake |
| .transcript |
| .add_message(<span class="kw-2">&</span>m); |
| |
| <span class="kw">let </span>nst = <span class="macro">require_handshake_msg_mut!</span>( |
| m, |
| HandshakeType::NewSessionTicket, |
| HandshakePayload::NewSessionTicket |
| )<span class="question-mark">?</span>; |
| <span class="kw">let </span>recvd = ReceivedTicketDetails::from(nst.ticket.<span class="number">0</span>, nst.lifetime_hint); |
| <span class="prelude-val">Ok</span>(<span class="self">self</span>.into_expect_ccs(recvd)) |
| } |
| } |
| |
| <span class="comment">// -- Waiting for their finished -- |
| </span><span class="kw">fn </span>save_session( |
| secrets: <span class="kw-2">&</span>SessionSecrets, |
| handshake: <span class="kw-2">&mut </span>HandshakeDetails, |
| recvd_ticket: <span class="kw-2">&mut </span>ReceivedTicketDetails, |
| sess: <span class="kw-2">&mut </span>ClientSessionImpl, |
| ) { |
| <span class="comment">// Save a ticket. If we got a new ticket, save that. Otherwise, save the |
| // original ticket again. |
| </span><span class="kw">let </span><span class="kw-2">mut </span>ticket = mem::replace(<span class="kw-2">&mut </span>recvd_ticket.new_ticket, Vec::new()); |
| <span class="kw">if </span>ticket.is_empty() && handshake.resuming_session.is_some() { |
| ticket = handshake |
| .resuming_session |
| .as_mut() |
| .unwrap() |
| .take_ticket(); |
| } |
| |
| <span class="kw">if </span>handshake.session_id.is_empty() && ticket.is_empty() { |
| <span class="macro">debug!</span>(<span class="string">"Session not saved: server didn't allocate id or ticket"</span>); |
| <span class="kw">return</span>; |
| } |
| |
| <span class="kw">let </span>key = persist::ClientSessionKey::session_for_dns_name(handshake.dns_name.as_ref()); |
| |
| <span class="kw">let </span>scs = sess.common.get_suite_assert(); |
| <span class="kw">let </span>master_secret = secrets.get_master_secret(); |
| <span class="kw">let </span>version = sess.get_protocol_version().unwrap(); |
| <span class="kw">let </span><span class="kw-2">mut </span>value = persist::ClientSessionValue::new( |
| version, |
| scs.suite, |
| <span class="kw-2">&</span>handshake.session_id, |
| ticket, |
| master_secret, |
| <span class="kw-2">&</span>sess.server_cert_chain, |
| ); |
| value.set_times(ticketer::timebase(), recvd_ticket.new_ticket_lifetime, <span class="number">0</span>); |
| <span class="kw">if </span>handshake.using_ems { |
| value.set_extended_ms_used(); |
| } |
| |
| <span class="kw">let </span>worked = sess |
| .config |
| .session_persistence |
| .put(key.get_encoding(), value.get_encoding()); |
| |
| <span class="kw">if </span>worked { |
| <span class="macro">debug!</span>(<span class="string">"Session saved"</span>); |
| } <span class="kw">else </span>{ |
| <span class="macro">debug!</span>(<span class="string">"Session not saved"</span>); |
| } |
| } |
| |
| <span class="kw">struct </span>ExpectFinished { |
| handshake: HandshakeDetails, |
| ticket: ReceivedTicketDetails, |
| secrets: SessionSecrets, |
| resuming: bool, |
| cert_verified: verify::ServerCertVerified, |
| sig_verified: verify::HandshakeSignatureValid, |
| } |
| |
| <span class="kw">impl </span>ExpectFinished { |
| <span class="kw">fn </span>into_expect_traffic(<span class="self">self</span>, fin: verify::FinishedMessageVerified) -> hs::NextState { |
| Box::new(ExpectTraffic { |
| secrets: <span class="self">self</span>.secrets, |
| _cert_verified: <span class="self">self</span>.cert_verified, |
| _sig_verified: <span class="self">self</span>.sig_verified, |
| _fin_verified: fin, |
| }) |
| } |
| } |
| |
| <span class="kw">impl </span>hs::State <span class="kw">for </span>ExpectFinished { |
| <span class="kw">fn </span>handle(<span class="self">self</span>: Box<<span class="self">Self</span>>, sess: <span class="kw-2">&mut </span>ClientSessionImpl, m: Message) -> hs::NextStateOrError { |
| <span class="kw">let </span><span class="kw-2">mut </span>st = <span class="kw-2">*</span><span class="self">self</span>; |
| <span class="kw">let </span>finished = |
| <span class="macro">require_handshake_msg!</span>(m, HandshakeType::Finished, HandshakePayload::Finished)<span class="question-mark">?</span>; |
| |
| hs::check_aligned_handshake(sess)<span class="question-mark">?</span>; |
| |
| <span class="comment">// Work out what verify_data we expect. |
| </span><span class="kw">let </span>vh = st |
| .handshake |
| .transcript |
| .get_current_hash(); |
| <span class="kw">let </span>expect_verify_data = st.secrets.server_verify_data(<span class="kw-2">&</span>vh); |
| |
| <span class="comment">// Constant-time verification of this is relatively unimportant: they only |
| // get one chance. But it can't hurt. |
| </span><span class="kw">let </span>fin = constant_time::verify_slices_are_equal(<span class="kw-2">&</span>expect_verify_data, <span class="kw-2">&</span>finished.<span class="number">0</span>) |
| .map_err(|<span class="kw">_</span>| { |
| sess.common |
| .send_fatal_alert(AlertDescription::DecryptError); |
| TLSError::DecryptError |
| }) |
| .map(|<span class="kw">_</span>| verify::FinishedMessageVerified::assertion())<span class="question-mark">?</span>; |
| |
| <span class="comment">// Hash this message too. |
| </span>st.handshake.transcript.add_message(<span class="kw-2">&</span>m); |
| |
| save_session(<span class="kw-2">&</span>st.secrets, <span class="kw-2">&mut </span>st.handshake, <span class="kw-2">&mut </span>st.ticket, sess); |
| |
| <span class="kw">if </span>st.resuming { |
| emit_ccs(sess); |
| sess.common |
| .record_layer |
| .start_encrypting(); |
| emit_finished(<span class="kw-2">&</span>st.secrets, <span class="kw-2">&mut </span>st.handshake, sess); |
| } |
| |
| sess.common.start_traffic(); |
| <span class="prelude-val">Ok</span>(st.into_expect_traffic(fin)) |
| } |
| } |
| |
| <span class="comment">// -- Traffic transit state -- |
| </span><span class="kw">struct </span>ExpectTraffic { |
| secrets: SessionSecrets, |
| _cert_verified: verify::ServerCertVerified, |
| _sig_verified: verify::HandshakeSignatureValid, |
| _fin_verified: verify::FinishedMessageVerified, |
| } |
| |
| <span class="kw">impl </span>hs::State <span class="kw">for </span>ExpectTraffic { |
| <span class="kw">fn </span>handle( |
| <span class="self">self</span>: Box<<span class="self">Self</span>>, |
| sess: <span class="kw-2">&mut </span>ClientSessionImpl, |
| <span class="kw-2">mut </span>m: Message, |
| ) -> hs::NextStateOrError { |
| check_message(<span class="kw-2">&</span>m, <span class="kw-2">&</span>[ContentType::ApplicationData], <span class="kw-2">&</span>[])<span class="question-mark">?</span>; |
| sess.common |
| .take_received_plaintext(m.take_opaque_payload().unwrap()); |
| <span class="prelude-val">Ok</span>(<span class="self">self</span>) |
| } |
| |
| <span class="kw">fn </span>export_keying_material( |
| <span class="kw-2">&</span><span class="self">self</span>, |
| output: <span class="kw-2">&mut </span>[u8], |
| label: <span class="kw-2">&</span>[u8], |
| context: <span class="prelude-ty">Option</span><<span class="kw-2">&</span>[u8]>, |
| ) -> <span class="prelude-ty">Result</span><(), TLSError> { |
| <span class="self">self</span>.secrets |
| .export_keying_material(output, label, context); |
| <span class="prelude-val">Ok</span>(()) |
| } |
| } |
| </code></pre></div> |
| </section></div></main><div id="rustdoc-vars" data-root-path="../../../" data-current-crate="rustls" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html> |