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author2015-06-29 20:16:15 +0000
committer2015-06-29 20:16:15 +0000
commit64106c4d3d4ddba8c7bc2af75376e6d3d3d75601 (patch)
tree8c64d6e8be006486d975a651505fbbde61365cd6 /src/openssl/crypto/symm.rs.html
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+ <section id='main' class="content source"><pre class="line-numbers"><span id="1"> 1</span>
+<span id="2"> 2</span>
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+<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>
+</pre><pre class='rust '>
+<span class='kw'>use</span> <span class='ident'>std</span>::<span class='ident'>iter</span>::<span class='ident'>repeat</span>;
+<span class='kw'>use</span> <span class='ident'>std</span>::<span class='ident'>convert</span>::<span class='ident'>AsRef</span>;
+<span class='kw'>use</span> <span class='ident'>libc</span>::{<span class='ident'>c_int</span>};
+
+<span class='kw'>use</span> <span class='ident'>ffi</span>;
+
+<span class='attribute'>#[<span class='ident'>derive</span>(<span class='ident'>Copy</span>, <span class='ident'>Clone</span>)]</span>
+<span class='kw'>pub</span> <span class='kw'>enum</span> <span class='ident'>Mode</span> {
+ <span class='ident'>Encrypt</span>,
+ <span class='ident'>Decrypt</span>,
+}
+
+<span class='attribute'>#[<span class='ident'>allow</span>(<span class='ident'>non_camel_case_types</span>)]</span>
+<span class='attribute'>#[<span class='ident'>derive</span>(<span class='ident'>Copy</span>, <span class='ident'>Clone</span>)]</span>
+<span class='kw'>pub</span> <span class='kw'>enum</span> <span class='ident'>Type</span> {
+ <span class='ident'>AES_128_ECB</span>,
+ <span class='ident'>AES_128_CBC</span>,
+ <span class='doccomment'>/// Requires the `aes_xts` feature</span>
+ <span class='attribute'>#[<span class='ident'>cfg</span>(<span class='ident'>feature</span> <span class='op'>=</span> <span class='string'>&quot;aes_xts&quot;</span>)]</span>
+ <span class='ident'>AES_128_XTS</span>,
+ <span class='comment'>// AES_128_CTR,</span>
+ <span class='comment'>//AES_128_GCM,</span>
+
+ <span class='ident'>AES_256_ECB</span>,
+ <span class='ident'>AES_256_CBC</span>,
+ <span class='doccomment'>/// Requires the `aes_xts` feature</span>
+ <span class='attribute'>#[<span class='ident'>cfg</span>(<span class='ident'>feature</span> <span class='op'>=</span> <span class='string'>&quot;aes_xts&quot;</span>)]</span>
+ <span class='ident'>AES_256_XTS</span>,
+ <span class='comment'>// AES_256_CTR,</span>
+ <span class='comment'>//AES_256_GCM,</span>
+
+ <span class='ident'>RC4_128</span>,
+}
+
+<span class='kw'>fn</span> <span class='ident'>evpc</span>(<span class='ident'>t</span>: <span class='ident'>Type</span>) <span class='op'>-&gt;</span> (<span class='op'>*</span><span class='kw'>const</span> <span class='ident'>ffi</span>::<span class='ident'>EVP_CIPHER</span>, <span class='ident'>u32</span>, <span class='ident'>u32</span>) {
+ <span class='kw'>unsafe</span> {
+ <span class='kw'>match</span> <span class='ident'>t</span> {
+ <span class='ident'>Type</span>::<span class='ident'>AES_128_ECB</span> <span class='op'>=&gt;</span> (<span class='ident'>ffi</span>::<span class='ident'>EVP_aes_128_ecb</span>(), <span class='number'>16</span>, <span class='number'>16</span>),
+ <span class='ident'>Type</span>::<span class='ident'>AES_128_CBC</span> <span class='op'>=&gt;</span> (<span class='ident'>ffi</span>::<span class='ident'>EVP_aes_128_cbc</span>(), <span class='number'>16</span>, <span class='number'>16</span>),
+ <span class='attribute'>#[<span class='ident'>cfg</span>(<span class='ident'>feature</span> <span class='op'>=</span> <span class='string'>&quot;aes_xts&quot;</span>)]</span>
+ <span class='ident'>Type</span>::<span class='ident'>AES_128_XTS</span> <span class='op'>=&gt;</span> (<span class='ident'>ffi</span>::<span class='ident'>EVP_aes_128_xts</span>(), <span class='number'>32</span>, <span class='number'>16</span>),
+ <span class='comment'>// AES_128_CTR =&gt; (EVP_aes_128_ctr(), 16, 0),</span>
+ <span class='comment'>//AES_128_GCM =&gt; (EVP_aes_128_gcm(), 16, 16),</span>
+
+ <span class='ident'>Type</span>::<span class='ident'>AES_256_ECB</span> <span class='op'>=&gt;</span> (<span class='ident'>ffi</span>::<span class='ident'>EVP_aes_256_ecb</span>(), <span class='number'>32</span>, <span class='number'>16</span>),
+ <span class='ident'>Type</span>::<span class='ident'>AES_256_CBC</span> <span class='op'>=&gt;</span> (<span class='ident'>ffi</span>::<span class='ident'>EVP_aes_256_cbc</span>(), <span class='number'>32</span>, <span class='number'>16</span>),
+ <span class='attribute'>#[<span class='ident'>cfg</span>(<span class='ident'>feature</span> <span class='op'>=</span> <span class='string'>&quot;aes_xts&quot;</span>)]</span>
+ <span class='ident'>Type</span>::<span class='ident'>AES_256_XTS</span> <span class='op'>=&gt;</span> (<span class='ident'>ffi</span>::<span class='ident'>EVP_aes_256_xts</span>(), <span class='number'>64</span>, <span class='number'>16</span>),
+ <span class='comment'>// AES_256_CTR =&gt; (EVP_aes_256_ctr(), 32, 0),</span>
+ <span class='comment'>//AES_256_GCM =&gt; (EVP_aes_256_gcm(), 32, 16),</span>
+
+ <span class='ident'>Type</span>::<span class='ident'>RC4_128</span> <span class='op'>=&gt;</span> (<span class='ident'>ffi</span>::<span class='ident'>EVP_rc4</span>(), <span class='number'>16</span>, <span class='number'>0</span>),
+ }
+ }
+}
+
+<span class='doccomment'>/// Represents a symmetric cipher context.</span>
+<span class='kw'>pub</span> <span class='kw'>struct</span> <span class='ident'>Crypter</span> {
+ <span class='ident'>evp</span>: <span class='op'>*</span><span class='kw'>const</span> <span class='ident'>ffi</span>::<span class='ident'>EVP_CIPHER</span>,
+ <span class='ident'>ctx</span>: <span class='op'>*</span><span class='kw-2'>mut</span> <span class='ident'>ffi</span>::<span class='ident'>EVP_CIPHER_CTX</span>,
+ <span class='ident'>keylen</span>: <span class='ident'>u32</span>,
+ <span class='ident'>blocksize</span>: <span class='ident'>u32</span>,
+}
+
+<span class='kw'>impl</span> <span class='ident'>Crypter</span> {
+ <span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>new</span>(<span class='ident'>t</span>: <span class='ident'>Type</span>) <span class='op'>-&gt;</span> <span class='ident'>Crypter</span> {
+ <span class='ident'>ffi</span>::<span class='ident'>init</span>();
+
+ <span class='kw'>let</span> <span class='ident'>ctx</span> <span class='op'>=</span> <span class='kw'>unsafe</span> { <span class='ident'>ffi</span>::<span class='ident'>EVP_CIPHER_CTX_new</span>() };
+ <span class='kw'>let</span> (<span class='ident'>evp</span>, <span class='ident'>keylen</span>, <span class='ident'>blocksz</span>) <span class='op'>=</span> <span class='ident'>evpc</span>(<span class='ident'>t</span>);
+ <span class='ident'>Crypter</span> { <span class='ident'>evp</span>: <span class='ident'>evp</span>, <span class='ident'>ctx</span>: <span class='ident'>ctx</span>, <span class='ident'>keylen</span>: <span class='ident'>keylen</span>, <span class='ident'>blocksize</span>: <span class='ident'>blocksz</span> }
+ }
+
+ <span class='doccomment'>/**
+ * Enables or disables padding. If padding is disabled, total amount of
+ * data encrypted must be a multiple of block size.
+ */</span>
+ <span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>pad</span>(<span class='kw-2'>&amp;</span><span class='self'>self</span>, <span class='ident'>padding</span>: <span class='ident'>bool</span>) {
+ <span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>blocksize</span> <span class='op'>&gt;</span> <span class='number'>0</span> {
+ <span class='kw'>unsafe</span> {
+ <span class='kw'>let</span> <span class='ident'>v</span> <span class='op'>=</span> <span class='kw'>if</span> <span class='ident'>padding</span> { <span class='number'>1</span> <span class='kw'>as</span> <span class='ident'>c_int</span> } <span class='kw'>else</span> { <span class='number'>0</span> };
+ <span class='ident'>ffi</span>::<span class='ident'>EVP_CIPHER_CTX_set_padding</span>(<span class='self'>self</span>.<span class='ident'>ctx</span>, <span class='ident'>v</span>);
+ }
+ }
+ }
+
+ <span class='doccomment'>/**
+ * Initializes this crypter.
+ */</span>
+ <span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>init</span><span class='op'>&lt;</span><span class='ident'>T</span>: <span class='ident'>AsRef</span><span class='op'>&lt;</span>[<span class='ident'>u8</span>]<span class='op'>&gt;&gt;</span>(<span class='kw-2'>&amp;</span><span class='self'>self</span>, <span class='ident'>mode</span>: <span class='ident'>Mode</span>, <span class='ident'>key</span>: <span class='kw-2'>&amp;</span>[<span class='ident'>u8</span>], <span class='ident'>iv</span>: <span class='ident'>T</span>) {
+ <span class='kw'>unsafe</span> {
+ <span class='kw'>let</span> <span class='ident'>mode</span> <span class='op'>=</span> <span class='kw'>match</span> <span class='ident'>mode</span> {
+ <span class='ident'>Mode</span>::<span class='ident'>Encrypt</span> <span class='op'>=&gt;</span> <span class='number'>1</span> <span class='kw'>as</span> <span class='ident'>c_int</span>,
+ <span class='ident'>Mode</span>::<span class='ident'>Decrypt</span> <span class='op'>=&gt;</span> <span class='number'>0</span> <span class='kw'>as</span> <span class='ident'>c_int</span>,
+ };
+ <span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>key</span>.<span class='ident'>len</span>(), <span class='self'>self</span>.<span class='ident'>keylen</span> <span class='kw'>as</span> <span class='ident'>usize</span>);
+
+ <span class='ident'>ffi</span>::<span class='ident'>EVP_CipherInit</span>(
+ <span class='self'>self</span>.<span class='ident'>ctx</span>,
+ <span class='self'>self</span>.<span class='ident'>evp</span>,
+ <span class='ident'>key</span>.<span class='ident'>as_ptr</span>(),
+ <span class='ident'>iv</span>.<span class='ident'>as_ref</span>().<span class='ident'>as_ptr</span>(),
+ <span class='ident'>mode</span>
+ );
+ }
+ }
+
+ <span class='doccomment'>/**
+ * Update this crypter with more data to encrypt or decrypt. Returns
+ * encrypted or decrypted bytes.
+ */</span>
+ <span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>update</span>(<span class='kw-2'>&amp;</span><span class='self'>self</span>, <span class='ident'>data</span>: <span class='kw-2'>&amp;</span>[<span class='ident'>u8</span>]) <span class='op'>-&gt;</span> <span class='ident'>Vec</span><span class='op'>&lt;</span><span class='ident'>u8</span><span class='op'>&gt;</span> {
+ <span class='kw'>unsafe</span> {
+ <span class='kw'>let</span> <span class='ident'>sum</span> <span class='op'>=</span> <span class='ident'>data</span>.<span class='ident'>len</span>() <span class='op'>+</span> (<span class='self'>self</span>.<span class='ident'>blocksize</span> <span class='kw'>as</span> <span class='ident'>usize</span>);
+ <span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>res</span> <span class='op'>=</span> <span class='ident'>repeat</span>(<span class='number'>0u8</span>).<span class='ident'>take</span>(<span class='ident'>sum</span>).<span class='ident'>collect</span>::<span class='op'>&lt;</span><span class='ident'>Vec</span><span class='op'>&lt;</span>_<span class='op'>&gt;&gt;</span>();
+ <span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>reslen</span> <span class='op'>=</span> <span class='ident'>sum</span> <span class='kw'>as</span> <span class='ident'>c_int</span>;
+
+ <span class='ident'>ffi</span>::<span class='ident'>EVP_CipherUpdate</span>(
+ <span class='self'>self</span>.<span class='ident'>ctx</span>,
+ <span class='ident'>res</span>.<span class='ident'>as_mut_ptr</span>(),
+ <span class='kw-2'>&amp;</span><span class='kw-2'>mut</span> <span class='ident'>reslen</span>,
+ <span class='ident'>data</span>.<span class='ident'>as_ptr</span>(),
+ <span class='ident'>data</span>.<span class='ident'>len</span>() <span class='kw'>as</span> <span class='ident'>c_int</span>
+ );
+
+ <span class='ident'>res</span>.<span class='ident'>truncate</span>(<span class='ident'>reslen</span> <span class='kw'>as</span> <span class='ident'>usize</span>);
+ <span class='ident'>res</span>
+ }
+ }
+
+ <span class='doccomment'>/**
+ * Finish crypting. Returns the remaining partial block of output, if any.
+ */</span>
+ <span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>finalize</span>(<span class='kw-2'>&amp;</span><span class='self'>self</span>) <span class='op'>-&gt;</span> <span class='ident'>Vec</span><span class='op'>&lt;</span><span class='ident'>u8</span><span class='op'>&gt;</span> {
+ <span class='kw'>unsafe</span> {
+ <span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>res</span> <span class='op'>=</span> <span class='ident'>repeat</span>(<span class='number'>0u8</span>).<span class='ident'>take</span>(<span class='self'>self</span>.<span class='ident'>blocksize</span> <span class='kw'>as</span> <span class='ident'>usize</span>).<span class='ident'>collect</span>::<span class='op'>&lt;</span><span class='ident'>Vec</span><span class='op'>&lt;</span>_<span class='op'>&gt;&gt;</span>();
+ <span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>reslen</span> <span class='op'>=</span> <span class='self'>self</span>.<span class='ident'>blocksize</span> <span class='kw'>as</span> <span class='ident'>c_int</span>;
+
+ <span class='ident'>ffi</span>::<span class='ident'>EVP_CipherFinal</span>(<span class='self'>self</span>.<span class='ident'>ctx</span>,
+ <span class='ident'>res</span>.<span class='ident'>as_mut_ptr</span>(),
+ <span class='kw-2'>&amp;</span><span class='kw-2'>mut</span> <span class='ident'>reslen</span>);
+
+ <span class='ident'>res</span>.<span class='ident'>truncate</span>(<span class='ident'>reslen</span> <span class='kw'>as</span> <span class='ident'>usize</span>);
+ <span class='ident'>res</span>
+ }
+ }
+}
+
+<span class='kw'>impl</span> <span class='ident'>Drop</span> <span class='kw'>for</span> <span class='ident'>Crypter</span> {
+ <span class='kw'>fn</span> <span class='ident'>drop</span>(<span class='kw-2'>&amp;</span><span class='kw-2'>mut</span> <span class='self'>self</span>) {
+ <span class='kw'>unsafe</span> {
+ <span class='ident'>ffi</span>::<span class='ident'>EVP_CIPHER_CTX_free</span>(<span class='self'>self</span>.<span class='ident'>ctx</span>);
+ }
+ }
+}
+
+<span class='doccomment'>/**
+ * Encrypts data, using the specified crypter type in encrypt mode with the
+ * specified key and iv; returns the resulting (encrypted) data.
+ */</span>
+<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>encrypt</span><span class='op'>&lt;</span><span class='ident'>T</span>: <span class='ident'>AsRef</span><span class='op'>&lt;</span>[<span class='ident'>u8</span>]<span class='op'>&gt;&gt;</span>(<span class='ident'>t</span>: <span class='ident'>Type</span>, <span class='ident'>key</span>: <span class='kw-2'>&amp;</span>[<span class='ident'>u8</span>], <span class='ident'>iv</span>: <span class='ident'>T</span>, <span class='ident'>data</span>: <span class='kw-2'>&amp;</span>[<span class='ident'>u8</span>]) <span class='op'>-&gt;</span> <span class='ident'>Vec</span><span class='op'>&lt;</span><span class='ident'>u8</span><span class='op'>&gt;</span> {
+ <span class='kw'>let</span> <span class='ident'>c</span> <span class='op'>=</span> <span class='ident'>Crypter</span>::<span class='ident'>new</span>(<span class='ident'>t</span>);
+ <span class='ident'>c</span>.<span class='ident'>init</span>(<span class='ident'>Mode</span>::<span class='ident'>Encrypt</span>, <span class='ident'>key</span>, <span class='ident'>iv</span>);
+ <span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>r</span> <span class='op'>=</span> <span class='ident'>c</span>.<span class='ident'>update</span>(<span class='ident'>data</span>);
+ <span class='kw'>let</span> <span class='ident'>rest</span> <span class='op'>=</span> <span class='ident'>c</span>.<span class='ident'>finalize</span>();
+ <span class='ident'>r</span>.<span class='ident'>extend</span>(<span class='ident'>rest</span>.<span class='ident'>into_iter</span>());
+ <span class='ident'>r</span>
+}
+
+<span class='doccomment'>/**
+ * Decrypts data, using the specified crypter type in decrypt mode with the
+ * specified key and iv; returns the resulting (decrypted) data.
+ */</span>
+<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>decrypt</span><span class='op'>&lt;</span><span class='ident'>T</span>: <span class='ident'>AsRef</span><span class='op'>&lt;</span>[<span class='ident'>u8</span>]<span class='op'>&gt;&gt;</span>(<span class='ident'>t</span>: <span class='ident'>Type</span>, <span class='ident'>key</span>: <span class='kw-2'>&amp;</span>[<span class='ident'>u8</span>], <span class='ident'>iv</span>: <span class='ident'>T</span>, <span class='ident'>data</span>: <span class='kw-2'>&amp;</span>[<span class='ident'>u8</span>]) <span class='op'>-&gt;</span> <span class='ident'>Vec</span><span class='op'>&lt;</span><span class='ident'>u8</span><span class='op'>&gt;</span> {
+ <span class='kw'>let</span> <span class='ident'>c</span> <span class='op'>=</span> <span class='ident'>Crypter</span>::<span class='ident'>new</span>(<span class='ident'>t</span>);
+ <span class='ident'>c</span>.<span class='ident'>init</span>(<span class='ident'>Mode</span>::<span class='ident'>Decrypt</span>, <span class='ident'>key</span>, <span class='ident'>iv</span>);
+ <span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>r</span> <span class='op'>=</span> <span class='ident'>c</span>.<span class='ident'>update</span>(<span class='ident'>data</span>);
+ <span class='kw'>let</span> <span class='ident'>rest</span> <span class='op'>=</span> <span class='ident'>c</span>.<span class='ident'>finalize</span>();
+ <span class='ident'>r</span>.<span class='ident'>extend</span>(<span class='ident'>rest</span>.<span class='ident'>into_iter</span>());
+ <span class='ident'>r</span>
+}
+
+<span class='attribute'>#[<span class='ident'>cfg</span>(<span class='ident'>test</span>)]</span>
+<span class='kw'>mod</span> <span class='ident'>tests</span> {
+ <span class='kw'>use</span> <span class='ident'>serialize</span>::<span class='ident'>hex</span>::<span class='ident'>FromHex</span>;
+
+ <span class='comment'>// Test vectors from FIPS-197:</span>
+ <span class='comment'>// http://csrc.nist.gov/publications/fips/fips197/fips-197.pdf</span>
+ <span class='attribute'>#[<span class='ident'>test</span>]</span>
+ <span class='kw'>fn</span> <span class='ident'>test_aes_256_ecb</span>() {
+ <span class='kw'>let</span> <span class='ident'>k0</span> <span class='op'>=</span>
+ [<span class='number'>0x00u8</span>, <span class='number'>0x01u8</span>, <span class='number'>0x02u8</span>, <span class='number'>0x03u8</span>, <span class='number'>0x04u8</span>, <span class='number'>0x05u8</span>, <span class='number'>0x06u8</span>, <span class='number'>0x07u8</span>,
+ <span class='number'>0x08u8</span>, <span class='number'>0x09u8</span>, <span class='number'>0x0au8</span>, <span class='number'>0x0bu8</span>, <span class='number'>0x0cu8</span>, <span class='number'>0x0du8</span>, <span class='number'>0x0eu8</span>, <span class='number'>0x0fu8</span>,
+ <span class='number'>0x10u8</span>, <span class='number'>0x11u8</span>, <span class='number'>0x12u8</span>, <span class='number'>0x13u8</span>, <span class='number'>0x14u8</span>, <span class='number'>0x15u8</span>, <span class='number'>0x16u8</span>, <span class='number'>0x17u8</span>,
+ <span class='number'>0x18u8</span>, <span class='number'>0x19u8</span>, <span class='number'>0x1au8</span>, <span class='number'>0x1bu8</span>, <span class='number'>0x1cu8</span>, <span class='number'>0x1du8</span>, <span class='number'>0x1eu8</span>, <span class='number'>0x1fu8</span>];
+ <span class='kw'>let</span> <span class='ident'>p0</span> <span class='op'>=</span>
+ [<span class='number'>0x00u8</span>, <span class='number'>0x11u8</span>, <span class='number'>0x22u8</span>, <span class='number'>0x33u8</span>, <span class='number'>0x44u8</span>, <span class='number'>0x55u8</span>, <span class='number'>0x66u8</span>, <span class='number'>0x77u8</span>,
+ <span class='number'>0x88u8</span>, <span class='number'>0x99u8</span>, <span class='number'>0xaau8</span>, <span class='number'>0xbbu8</span>, <span class='number'>0xccu8</span>, <span class='number'>0xddu8</span>, <span class='number'>0xeeu8</span>, <span class='number'>0xffu8</span>];
+ <span class='kw'>let</span> <span class='ident'>c0</span> <span class='op'>=</span>
+ [<span class='number'>0x8eu8</span>, <span class='number'>0xa2u8</span>, <span class='number'>0xb7u8</span>, <span class='number'>0xcau8</span>, <span class='number'>0x51u8</span>, <span class='number'>0x67u8</span>, <span class='number'>0x45u8</span>, <span class='number'>0xbfu8</span>,
+ <span class='number'>0xeau8</span>, <span class='number'>0xfcu8</span>, <span class='number'>0x49u8</span>, <span class='number'>0x90u8</span>, <span class='number'>0x4bu8</span>, <span class='number'>0x49u8</span>, <span class='number'>0x60u8</span>, <span class='number'>0x89u8</span>];
+ <span class='kw'>let</span> <span class='ident'>c</span> <span class='op'>=</span> <span class='ident'>super</span>::<span class='ident'>Crypter</span>::<span class='ident'>new</span>(<span class='ident'>super</span>::<span class='ident'>Type</span>::<span class='ident'>AES_256_ECB</span>);
+ <span class='ident'>c</span>.<span class='ident'>init</span>(<span class='ident'>super</span>::<span class='ident'>Mode</span>::<span class='ident'>Encrypt</span>, <span class='kw-2'>&amp;</span><span class='ident'>k0</span>, <span class='kw-2'>&amp;</span>[]);
+ <span class='ident'>c</span>.<span class='ident'>pad</span>(<span class='boolval'>false</span>);
+ <span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>r0</span> <span class='op'>=</span> <span class='ident'>c</span>.<span class='ident'>update</span>(<span class='kw-2'>&amp;</span><span class='ident'>p0</span>);
+ <span class='ident'>r0</span>.<span class='ident'>extend</span>(<span class='ident'>c</span>.<span class='ident'>finalize</span>().<span class='ident'>into_iter</span>());
+ <span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>r0</span> <span class='op'>==</span> <span class='ident'>c0</span>);
+ <span class='ident'>c</span>.<span class='ident'>init</span>(<span class='ident'>super</span>::<span class='ident'>Mode</span>::<span class='ident'>Decrypt</span>, <span class='kw-2'>&amp;</span><span class='ident'>k0</span>, <span class='kw-2'>&amp;</span>[]);
+ <span class='ident'>c</span>.<span class='ident'>pad</span>(<span class='boolval'>false</span>);
+ <span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>p1</span> <span class='op'>=</span> <span class='ident'>c</span>.<span class='ident'>update</span>(<span class='kw-2'>&amp;</span><span class='ident'>r0</span>);
+ <span class='ident'>p1</span>.<span class='ident'>extend</span>(<span class='ident'>c</span>.<span class='ident'>finalize</span>().<span class='ident'>into_iter</span>());
+ <span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>p1</span> <span class='op'>==</span> <span class='ident'>p0</span>);
+ }
+
+ <span class='attribute'>#[<span class='ident'>test</span>]</span>
+ <span class='kw'>fn</span> <span class='ident'>test_aes_256_cbc_decrypt</span>() {
+ <span class='kw'>let</span> <span class='ident'>cr</span> <span class='op'>=</span> <span class='ident'>super</span>::<span class='ident'>Crypter</span>::<span class='ident'>new</span>(<span class='ident'>super</span>::<span class='ident'>Type</span>::<span class='ident'>AES_256_CBC</span>);
+ <span class='kw'>let</span> <span class='ident'>iv</span> <span class='op'>=</span> [
+ <span class='number'>4_u8</span>, <span class='number'>223_u8</span>, <span class='number'>153_u8</span>, <span class='number'>219_u8</span>, <span class='number'>28_u8</span>, <span class='number'>142_u8</span>, <span class='number'>234_u8</span>, <span class='number'>68_u8</span>, <span class='number'>227_u8</span>,
+ <span class='number'>69_u8</span>, <span class='number'>98_u8</span>, <span class='number'>107_u8</span>, <span class='number'>208_u8</span>, <span class='number'>14_u8</span>, <span class='number'>236_u8</span>, <span class='number'>60_u8</span>, <span class='number'>0_u8</span>, <span class='number'>0_u8</span>,
+ <span class='number'>0_u8</span>, <span class='number'>0_u8</span>, <span class='number'>0_u8</span>, <span class='number'>0_u8</span>, <span class='number'>0_u8</span>, <span class='number'>0_u8</span>, <span class='number'>0_u8</span>, <span class='number'>0_u8</span>, <span class='number'>0_u8</span>, <span class='number'>0_u8</span>, <span class='number'>0_u8</span>,
+ <span class='number'>0_u8</span>, <span class='number'>0_u8</span>, <span class='number'>0_u8</span>
+ ];
+ <span class='kw'>let</span> <span class='ident'>data</span> <span class='op'>=</span> [
+ <span class='number'>143_u8</span>, <span class='number'>210_u8</span>, <span class='number'>75_u8</span>, <span class='number'>63_u8</span>, <span class='number'>214_u8</span>, <span class='number'>179_u8</span>, <span class='number'>155_u8</span>,
+ <span class='number'>241_u8</span>, <span class='number'>242_u8</span>, <span class='number'>31_u8</span>, <span class='number'>154_u8</span>, <span class='number'>56_u8</span>, <span class='number'>198_u8</span>, <span class='number'>145_u8</span>, <span class='number'>192_u8</span>, <span class='number'>64_u8</span>,
+ <span class='number'>2_u8</span>, <span class='number'>245_u8</span>, <span class='number'>167_u8</span>, <span class='number'>220_u8</span>, <span class='number'>55_u8</span>, <span class='number'>119_u8</span>, <span class='number'>233_u8</span>, <span class='number'>136_u8</span>, <span class='number'>139_u8</span>,
+ <span class='number'>27_u8</span>, <span class='number'>71_u8</span>, <span class='number'>242_u8</span>, <span class='number'>119_u8</span>, <span class='number'>175_u8</span>, <span class='number'>65_u8</span>, <span class='number'>207_u8</span>
+ ];
+ <span class='kw'>let</span> <span class='ident'>ciphered_data</span> <span class='op'>=</span> [
+ <span class='number'>0x4a_u8</span>, <span class='number'>0x2e_u8</span>, <span class='number'>0xe5_u8</span>, <span class='number'>0x6_u8</span>, <span class='number'>0xbf_u8</span>, <span class='number'>0xcf_u8</span>, <span class='number'>0xf2_u8</span>, <span class='number'>0xd7_u8</span>,
+ <span class='number'>0xea_u8</span>, <span class='number'>0x2d_u8</span>, <span class='number'>0xb1_u8</span>, <span class='number'>0x85_u8</span>, <span class='number'>0x6c_u8</span>, <span class='number'>0x93_u8</span>, <span class='number'>0x65_u8</span>, <span class='number'>0x6f_u8</span>
+ ];
+ <span class='ident'>cr</span>.<span class='ident'>init</span>(<span class='ident'>super</span>::<span class='ident'>Mode</span>::<span class='ident'>Decrypt</span>, <span class='kw-2'>&amp;</span><span class='ident'>data</span>, <span class='kw-2'>&amp;</span><span class='ident'>iv</span>);
+ <span class='ident'>cr</span>.<span class='ident'>pad</span>(<span class='boolval'>false</span>);
+ <span class='kw'>let</span> <span class='ident'>unciphered_data_1</span> <span class='op'>=</span> <span class='ident'>cr</span>.<span class='ident'>update</span>(<span class='kw-2'>&amp;</span><span class='ident'>ciphered_data</span>);
+ <span class='kw'>let</span> <span class='ident'>unciphered_data_2</span> <span class='op'>=</span> <span class='ident'>cr</span>.<span class='ident'>finalize</span>();
+
+ <span class='kw'>let</span> <span class='ident'>expected_unciphered_data</span> <span class='op'>=</span> <span class='string'>b&quot;I love turtles.\x01&quot;</span>;
+
+ <span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>unciphered_data_2</span>.<span class='ident'>len</span>() <span class='op'>==</span> <span class='number'>0</span>);
+
+ <span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='kw-2'>&amp;</span><span class='ident'>unciphered_data_1</span>, <span class='ident'>expected_unciphered_data</span>);
+ }
+
+ <span class='kw'>fn</span> <span class='ident'>cipher_test</span>(<span class='ident'>ciphertype</span>: <span class='ident'>super</span>::<span class='ident'>Type</span>, <span class='ident'>pt</span>: <span class='kw-2'>&amp;</span><span class='ident'>str</span>, <span class='ident'>ct</span>: <span class='kw-2'>&amp;</span><span class='ident'>str</span>, <span class='ident'>key</span>: <span class='kw-2'>&amp;</span><span class='ident'>str</span>, <span class='ident'>iv</span>: <span class='kw-2'>&amp;</span><span class='ident'>str</span>) {
+ <span class='kw'>use</span> <span class='ident'>serialize</span>::<span class='ident'>hex</span>::<span class='ident'>ToHex</span>;
+
+ <span class='kw'>let</span> <span class='ident'>cipher</span> <span class='op'>=</span> <span class='ident'>super</span>::<span class='ident'>Crypter</span>::<span class='ident'>new</span>(<span class='ident'>ciphertype</span>);
+ <span class='ident'>cipher</span>.<span class='ident'>init</span>(<span class='ident'>super</span>::<span class='ident'>Mode</span>::<span class='ident'>Encrypt</span>, <span class='kw-2'>&amp;</span><span class='ident'>key</span>.<span class='ident'>from_hex</span>().<span class='ident'>unwrap</span>(), <span class='kw-2'>&amp;</span><span class='ident'>iv</span>.<span class='ident'>from_hex</span>().<span class='ident'>unwrap</span>());
+
+ <span class='kw'>let</span> <span class='ident'>expected</span> <span class='op'>=</span> <span class='ident'>ct</span>.<span class='ident'>from_hex</span>().<span class='ident'>unwrap</span>();
+ <span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>computed</span> <span class='op'>=</span> <span class='ident'>cipher</span>.<span class='ident'>update</span>(<span class='kw-2'>&amp;</span><span class='ident'>pt</span>.<span class='ident'>from_hex</span>().<span class='ident'>unwrap</span>());
+ <span class='ident'>computed</span>.<span class='ident'>extend</span>(<span class='ident'>cipher</span>.<span class='ident'>finalize</span>().<span class='ident'>into_iter</span>());
+
+ <span class='kw'>if</span> <span class='ident'>computed</span> <span class='op'>!=</span> <span class='ident'>expected</span> {
+ <span class='macro'>println</span><span class='macro'>!</span>(<span class='string'>&quot;Computed: {}&quot;</span>, <span class='ident'>computed</span>.<span class='ident'>to_hex</span>());
+ <span class='macro'>println</span><span class='macro'>!</span>(<span class='string'>&quot;Expected: {}&quot;</span>, <span class='ident'>expected</span>.<span class='ident'>to_hex</span>());
+ <span class='kw'>if</span> <span class='ident'>computed</span>.<span class='ident'>len</span>() <span class='op'>!=</span> <span class='ident'>expected</span>.<span class='ident'>len</span>() {
+ <span class='macro'>println</span><span class='macro'>!</span>(<span class='string'>&quot;Lengths differ: {} in computed vs {} expected&quot;</span>,
+ <span class='ident'>computed</span>.<span class='ident'>len</span>(), <span class='ident'>expected</span>.<span class='ident'>len</span>());
+ }
+ <span class='macro'>panic</span><span class='macro'>!</span>(<span class='string'>&quot;test failure&quot;</span>);
+ }
+ }
+
+ <span class='attribute'>#[<span class='ident'>test</span>]</span>
+ <span class='kw'>fn</span> <span class='ident'>test_rc4</span>() {
+
+ <span class='kw'>let</span> <span class='ident'>pt</span> <span class='op'>=</span> <span class='string'>&quot;0000000000000000000000000000000000000000000000000000000000000000000000000000&quot;</span>;
+ <span class='kw'>let</span> <span class='ident'>ct</span> <span class='op'>=</span> <span class='string'>&quot;A68686B04D686AA107BD8D4CAB191A3EEC0A6294BC78B60F65C25CB47BD7BB3A48EFC4D26BE4&quot;</span>;
+ <span class='kw'>let</span> <span class='ident'>key</span> <span class='op'>=</span> <span class='string'>&quot;97CD440324DA5FD1F7955C1C13B6B466&quot;</span>;
+ <span class='kw'>let</span> <span class='ident'>iv</span> <span class='op'>=</span> <span class='string'>&quot;&quot;</span>;
+
+ <span class='ident'>cipher_test</span>(<span class='ident'>super</span>::<span class='ident'>Type</span>::<span class='ident'>RC4_128</span>, <span class='ident'>pt</span>, <span class='ident'>ct</span>, <span class='ident'>key</span>, <span class='ident'>iv</span>);
+ }
+
+ <span class='attribute'>#[<span class='ident'>test</span>]</span>
+ <span class='attribute'>#[<span class='ident'>cfg</span>(<span class='ident'>feature</span> <span class='op'>=</span> <span class='string'>&quot;aes_xts&quot;</span>)]</span>
+ <span class='kw'>fn</span> <span class='ident'>test_aes256_xts</span>() {
+ <span class='comment'>// Test case 174 from</span>
+ <span class='comment'>// http://csrc.nist.gov/groups/STM/cavp/documents/aes/XTSTestVectors.zip</span>
+ <span class='kw'>let</span> <span class='ident'>pt</span> <span class='op'>=</span> <span class='string'>&quot;77f4ef63d734ebd028508da66c22cdebdd52ecd6ee2ab0a50bc8ad0cfd692ca5fcd4e6dedc45df7f6503f462611dc542&quot;</span>;
+ <span class='kw'>let</span> <span class='ident'>ct</span> <span class='op'>=</span> <span class='string'>&quot;ce7d905a7776ac72f240d22aafed5e4eb7566cdc7211220e970da634ce015f131a5ecb8d400bc9e84f0b81d8725dbbc7&quot;</span>;
+ <span class='kw'>let</span> <span class='ident'>key</span> <span class='op'>=</span> <span class='string'>&quot;b6bfef891f83b5ff073f2231267be51eb084b791fa19a154399c0684c8b2dfcb37de77d28bbda3b4180026ad640b74243b3133e7b9fae629403f6733423dae28&quot;</span>;
+ <span class='kw'>let</span> <span class='ident'>iv</span> <span class='op'>=</span> <span class='string'>&quot;db200efb7eaaa737dbdf40babb68953f&quot;</span>;
+
+ <span class='ident'>cipher_test</span>(<span class='ident'>super</span>::<span class='ident'>Type</span>::<span class='ident'>AES_256_XTS</span>, <span class='ident'>pt</span>, <span class='ident'>ct</span>, <span class='ident'>key</span>, <span class='ident'>iv</span>);
+ }
+
+ <span class='comment'>/*#[test]
+ fn test_aes128_ctr() {
+
+ let pt = ~&quot;6BC1BEE22E409F96E93D7E117393172AAE2D8A571E03AC9C9EB76FAC45AF8E5130C81C46A35CE411E5FBC1191A0A52EFF69F2445DF4F9B17AD2B417BE66C3710&quot;;
+ let ct = ~&quot;874D6191B620E3261BEF6864990DB6CE9806F66B7970FDFF8617187BB9FFFDFF5AE4DF3EDBD5D35E5B4F09020DB03EAB1E031DDA2FBE03D1792170A0F3009CEE&quot;;
+ let key = ~&quot;2B7E151628AED2A6ABF7158809CF4F3C&quot;;
+ let iv = ~&quot;F0F1F2F3F4F5F6F7F8F9FAFBFCFDFEFF&quot;;
+
+ cipher_test(super::AES_128_CTR, pt, ct, key, iv);
+ }*/</span>
+
+ <span class='comment'>/*#[test]
+ fn test_aes128_gcm() {
+ // Test case 3 in GCM spec
+ let pt = ~&quot;d9313225f88406e5a55909c5aff5269a86a7a9531534f7da2e4c303d8a318a721c3c0c95956809532fcf0e2449a6b525b16aedf5aa0de657ba637b391aafd255&quot;;
+ let ct = ~&quot;42831ec2217774244b7221b784d0d49ce3aa212f2c02a4e035c17e2329aca12e21d514b25466931c7d8f6a5aac84aa051ba30b396a0aac973d58e091473f59854d5c2af327cd64a62cf35abd2ba6fab4&quot;;
+ let key = ~&quot;feffe9928665731c6d6a8f9467308308&quot;;
+ let iv = ~&quot;cafebabefacedbaddecaf888&quot;;
+
+ cipher_test(super::AES_128_GCM, pt, ct, key, iv);
+ }*/</span>
+}
+</pre>
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