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<title>M2Crypto.EVP — M2Crypto documentation</title>
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<h1>Source code for M2Crypto.EVP</h1><div class="highlight"><pre>
<span></span><span class="kn">from</span> <span class="nn">__future__</span> <span class="kn">import</span> <span class="n">absolute_import</span>
<span class="sd">"""M2Crypto wrapper for OpenSSL EVP API.</span>
<span class="sd">Copyright (c) 1999-2004 Ng Pheng Siong. All rights reserved.</span>
<span class="sd">Portions Copyright (c) 2004-2007 Open Source Applications Foundation.</span>
<span class="sd">Author: Heikki Toivonen</span>
<span class="sd">"""</span>
<span class="kn">import</span> <span class="nn">logging</span>
<span class="kn">from</span> <span class="nn">M2Crypto</span> <span class="kn">import</span> <span class="n">BIO</span><span class="p">,</span> <span class="n">Err</span><span class="p">,</span> <span class="n">RSA</span><span class="p">,</span> <span class="n">m2</span><span class="p">,</span> <span class="n">util</span>
<span class="kn">from</span> <span class="nn">typing</span> <span class="kn">import</span> <span class="n">AnyStr</span><span class="p">,</span> <span class="n">Optional</span><span class="p">,</span> <span class="n">Callable</span> <span class="c1"># noqa</span>
<span class="kn">from</span> <span class="nn">M2Crypto.SSL.Context</span> <span class="kn">import</span> <span class="n">Context</span>
<span class="n">log</span> <span class="o">=</span> <span class="n">logging</span><span class="o">.</span><span class="n">getLogger</span><span class="p">(</span><span class="s1">'EVP'</span><span class="p">)</span>
<div class="viewcode-block" id="EVPError"><a class="viewcode-back" href="../../M2Crypto.html#M2Crypto.EVP.EVPError">[docs]</a><span class="k">class</span> <span class="nc">EVPError</span><span class="p">(</span><span class="ne">ValueError</span><span class="p">):</span>
<span class="k">pass</span></div>
<span class="n">m2</span><span class="o">.</span><span class="n">evp_init</span><span class="p">(</span><span class="n">EVPError</span><span class="p">)</span>
<div class="viewcode-block" id="pbkdf2"><a class="viewcode-back" href="../../M2Crypto.html#M2Crypto.EVP.pbkdf2">[docs]</a><span class="k">def</span> <span class="nf">pbkdf2</span><span class="p">(</span><span class="n">password</span><span class="p">,</span> <span class="n">salt</span><span class="p">,</span> <span class="nb">iter</span><span class="p">,</span> <span class="n">keylen</span><span class="p">):</span>
<span class="c1"># type: (bytes, bytes, int, int) -> bytes</span>
<span class="sd">"""</span>
<span class="sd"> Derive a key from password using PBKDF2 algorithm specified in RFC 2898.</span>
<span class="sd"> :param password: Derive the key from this password.</span>
<span class="sd"> :param salt: Salt.</span>
<span class="sd"> :param iter: Number of iterations to perform.</span>
<span class="sd"> :param keylen: Length of key to produce.</span>
<span class="sd"> :return: Key.</span>
<span class="sd"> """</span>
<span class="k">return</span> <span class="n">m2</span><span class="o">.</span><span class="n">pkcs5_pbkdf2_hmac_sha1</span><span class="p">(</span><span class="n">password</span><span class="p">,</span> <span class="n">salt</span><span class="p">,</span> <span class="nb">iter</span><span class="p">,</span> <span class="n">keylen</span><span class="p">)</span></div>
<div class="viewcode-block" id="MessageDigest"><a class="viewcode-back" href="../../M2Crypto.html#M2Crypto.EVP.MessageDigest">[docs]</a><span class="k">class</span> <span class="nc">MessageDigest</span><span class="p">(</span><span class="nb">object</span><span class="p">):</span>
<span class="sd">"""</span>
<span class="sd"> Message Digest</span>
<span class="sd"> """</span>
<span class="n">m2_md_ctx_free</span> <span class="o">=</span> <span class="n">m2</span><span class="o">.</span><span class="n">md_ctx_free</span>
<span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">algo</span><span class="p">):</span>
<span class="c1"># type: (str) -> None</span>
<span class="n">md</span> <span class="o">=</span> <span class="nb">getattr</span><span class="p">(</span><span class="n">m2</span><span class="p">,</span> <span class="n">algo</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span> <span class="c1"># type: Optional[Callable]</span>
<span class="k">if</span> <span class="n">md</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span>
<span class="c1"># if the digest algorithm isn't found as an attribute of the m2</span>
<span class="c1"># module, try to look up the digest using get_digestbyname()</span>
<span class="bp">self</span><span class="o">.</span><span class="n">md</span> <span class="o">=</span> <span class="n">m2</span><span class="o">.</span><span class="n">get_digestbyname</span><span class="p">(</span><span class="n">algo</span><span class="p">)</span>
<span class="k">else</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">md</span> <span class="o">=</span> <span class="n">md</span><span class="p">()</span>
<span class="bp">self</span><span class="o">.</span><span class="n">ctx</span> <span class="o">=</span> <span class="n">m2</span><span class="o">.</span><span class="n">md_ctx_new</span><span class="p">()</span>
<span class="n">m2</span><span class="o">.</span><span class="n">digest_init</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">ctx</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">md</span><span class="p">)</span>
<span class="k">def</span> <span class="fm">__del__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="c1"># type: () -> None</span>
<span class="k">if</span> <span class="nb">getattr</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="s1">'ctx'</span><span class="p">,</span> <span class="kc">None</span><span class="p">):</span>
<span class="bp">self</span><span class="o">.</span><span class="n">m2_md_ctx_free</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">ctx</span><span class="p">)</span>
<div class="viewcode-block" id="MessageDigest.update"><a class="viewcode-back" href="../../M2Crypto.html#M2Crypto.EVP.MessageDigest.update">[docs]</a> <span class="k">def</span> <span class="nf">update</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">data</span><span class="p">):</span>
<span class="c1"># type: (bytes) -> int</span>
<span class="sd">"""</span>
<span class="sd"> Add data to be digested.</span>
<span class="sd"> :return: -1 for Python error, 1 for success, 0 for OpenSSL failure.</span>
<span class="sd"> """</span>
<span class="k">return</span> <span class="n">m2</span><span class="o">.</span><span class="n">digest_update</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">ctx</span><span class="p">,</span> <span class="n">data</span><span class="p">)</span></div>
<div class="viewcode-block" id="MessageDigest.final"><a class="viewcode-back" href="../../M2Crypto.html#M2Crypto.EVP.MessageDigest.final">[docs]</a> <span class="k">def</span> <span class="nf">final</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="k">return</span> <span class="n">m2</span><span class="o">.</span><span class="n">digest_final</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">ctx</span><span class="p">)</span></div>
<span class="c1"># Deprecated.</span>
<span class="n">digest</span> <span class="o">=</span> <span class="n">final</span></div>
<div class="viewcode-block" id="HMAC"><a class="viewcode-back" href="../../M2Crypto.html#M2Crypto.EVP.HMAC">[docs]</a><span class="k">class</span> <span class="nc">HMAC</span><span class="p">(</span><span class="nb">object</span><span class="p">):</span>
<span class="n">m2_hmac_ctx_free</span> <span class="o">=</span> <span class="n">m2</span><span class="o">.</span><span class="n">hmac_ctx_free</span>
<span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">key</span><span class="p">,</span> <span class="n">algo</span><span class="o">=</span><span class="s1">'sha1'</span><span class="p">):</span>
<span class="c1"># type: (bytes, str) -> None</span>
<span class="n">md</span> <span class="o">=</span> <span class="nb">getattr</span><span class="p">(</span><span class="n">m2</span><span class="p">,</span> <span class="n">algo</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span>
<span class="k">if</span> <span class="n">md</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span>
<span class="k">raise</span> <span class="ne">ValueError</span><span class="p">(</span><span class="s1">'unknown algorithm'</span><span class="p">,</span> <span class="n">algo</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">md</span> <span class="o">=</span> <span class="n">md</span><span class="p">()</span>
<span class="bp">self</span><span class="o">.</span><span class="n">ctx</span> <span class="o">=</span> <span class="n">m2</span><span class="o">.</span><span class="n">hmac_ctx_new</span><span class="p">()</span>
<span class="n">m2</span><span class="o">.</span><span class="n">hmac_init</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">ctx</span><span class="p">,</span> <span class="n">key</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">md</span><span class="p">)</span>
<span class="k">def</span> <span class="fm">__del__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="c1"># type: () -> None</span>
<span class="k">if</span> <span class="nb">getattr</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="s1">'ctx'</span><span class="p">,</span> <span class="kc">None</span><span class="p">):</span>
<span class="bp">self</span><span class="o">.</span><span class="n">m2_hmac_ctx_free</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">ctx</span><span class="p">)</span>
<div class="viewcode-block" id="HMAC.reset"><a class="viewcode-back" href="../../M2Crypto.html#M2Crypto.EVP.HMAC.reset">[docs]</a> <span class="k">def</span> <span class="nf">reset</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">key</span><span class="p">):</span>
<span class="c1"># type: (bytes) -> None</span>
<span class="n">m2</span><span class="o">.</span><span class="n">hmac_init</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">ctx</span><span class="p">,</span> <span class="n">key</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">md</span><span class="p">)</span></div>
<div class="viewcode-block" id="HMAC.update"><a class="viewcode-back" href="../../M2Crypto.html#M2Crypto.EVP.HMAC.update">[docs]</a> <span class="k">def</span> <span class="nf">update</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">data</span><span class="p">):</span>
<span class="c1"># type: (bytes) -> None</span>
<span class="n">m2</span><span class="o">.</span><span class="n">hmac_update</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">ctx</span><span class="p">,</span> <span class="n">data</span><span class="p">)</span></div>
<div class="viewcode-block" id="HMAC.final"><a class="viewcode-back" href="../../M2Crypto.html#M2Crypto.EVP.HMAC.final">[docs]</a> <span class="k">def</span> <span class="nf">final</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="c1"># type: () -> bytes</span>
<span class="k">return</span> <span class="n">m2</span><span class="o">.</span><span class="n">hmac_final</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">ctx</span><span class="p">)</span></div>
<span class="n">digest</span> <span class="o">=</span> <span class="n">final</span></div>
<div class="viewcode-block" id="hmac"><a class="viewcode-back" href="../../M2Crypto.html#M2Crypto.EVP.hmac">[docs]</a><span class="k">def</span> <span class="nf">hmac</span><span class="p">(</span><span class="n">key</span><span class="p">,</span> <span class="n">data</span><span class="p">,</span> <span class="n">algo</span><span class="o">=</span><span class="s1">'sha1'</span><span class="p">):</span>
<span class="c1"># type: (bytes, bytes, str) -> bytes</span>
<span class="n">md</span> <span class="o">=</span> <span class="nb">getattr</span><span class="p">(</span><span class="n">m2</span><span class="p">,</span> <span class="n">algo</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span>
<span class="k">if</span> <span class="n">md</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span>
<span class="k">raise</span> <span class="ne">ValueError</span><span class="p">(</span><span class="s1">'unknown algorithm'</span><span class="p">,</span> <span class="n">algo</span><span class="p">)</span>
<span class="k">return</span> <span class="n">m2</span><span class="o">.</span><span class="n">hmac</span><span class="p">(</span><span class="n">key</span><span class="p">,</span> <span class="n">data</span><span class="p">,</span> <span class="n">md</span><span class="p">())</span></div>
<div class="viewcode-block" id="Cipher"><a class="viewcode-back" href="../../M2Crypto.html#M2Crypto.EVP.Cipher">[docs]</a><span class="k">class</span> <span class="nc">Cipher</span><span class="p">(</span><span class="nb">object</span><span class="p">):</span>
<span class="n">m2_cipher_ctx_free</span> <span class="o">=</span> <span class="n">m2</span><span class="o">.</span><span class="n">cipher_ctx_free</span>
<span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">alg</span><span class="p">,</span> <span class="n">key</span><span class="p">,</span> <span class="n">iv</span><span class="p">,</span> <span class="n">op</span><span class="p">,</span> <span class="n">key_as_bytes</span><span class="o">=</span><span class="mi">0</span><span class="p">,</span> <span class="n">d</span><span class="o">=</span><span class="s1">'md5'</span><span class="p">,</span>
<span class="n">salt</span><span class="o">=</span><span class="sa">b</span><span class="s1">'12345678'</span><span class="p">,</span> <span class="n">i</span><span class="o">=</span><span class="mi">1</span><span class="p">,</span> <span class="n">padding</span><span class="o">=</span><span class="mi">1</span><span class="p">):</span>
<span class="c1"># type: (str, bytes, bytes, object, int, str, bytes, int, int) -> None</span>
<span class="n">cipher</span> <span class="o">=</span> <span class="nb">getattr</span><span class="p">(</span><span class="n">m2</span><span class="p">,</span> <span class="n">alg</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span>
<span class="k">if</span> <span class="n">cipher</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span>
<span class="k">raise</span> <span class="ne">ValueError</span><span class="p">(</span><span class="s1">'unknown cipher'</span><span class="p">,</span> <span class="n">alg</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">cipher</span> <span class="o">=</span> <span class="n">cipher</span><span class="p">()</span>
<span class="k">if</span> <span class="n">key_as_bytes</span><span class="p">:</span>
<span class="n">kmd</span> <span class="o">=</span> <span class="nb">getattr</span><span class="p">(</span><span class="n">m2</span><span class="p">,</span> <span class="n">d</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span>
<span class="k">if</span> <span class="n">kmd</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span>
<span class="k">raise</span> <span class="ne">ValueError</span><span class="p">(</span><span class="s1">'unknown message digest'</span><span class="p">,</span> <span class="n">d</span><span class="p">)</span>
<span class="n">key</span> <span class="o">=</span> <span class="n">m2</span><span class="o">.</span><span class="n">bytes_to_key</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">cipher</span><span class="p">,</span> <span class="n">kmd</span><span class="p">(),</span> <span class="n">key</span><span class="p">,</span> <span class="n">salt</span><span class="p">,</span> <span class="n">iv</span><span class="p">,</span> <span class="n">i</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">ctx</span> <span class="o">=</span> <span class="n">m2</span><span class="o">.</span><span class="n">cipher_ctx_new</span><span class="p">()</span>
<span class="n">m2</span><span class="o">.</span><span class="n">cipher_init</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">ctx</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">cipher</span><span class="p">,</span> <span class="n">key</span><span class="p">,</span> <span class="n">iv</span><span class="p">,</span> <span class="n">op</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">set_padding</span><span class="p">(</span><span class="n">padding</span><span class="p">)</span>
<span class="k">del</span> <span class="n">key</span>
<span class="k">def</span> <span class="fm">__del__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="c1"># type: () -> None</span>
<span class="k">if</span> <span class="nb">getattr</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="s1">'ctx'</span><span class="p">,</span> <span class="kc">None</span><span class="p">):</span>
<span class="bp">self</span><span class="o">.</span><span class="n">m2_cipher_ctx_free</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">ctx</span><span class="p">)</span>
<div class="viewcode-block" id="Cipher.update"><a class="viewcode-back" href="../../M2Crypto.html#M2Crypto.EVP.Cipher.update">[docs]</a> <span class="k">def</span> <span class="nf">update</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">data</span><span class="p">):</span>
<span class="c1"># type: (bytes) -> bytes</span>
<span class="k">return</span> <span class="n">m2</span><span class="o">.</span><span class="n">cipher_update</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">ctx</span><span class="p">,</span> <span class="n">data</span><span class="p">)</span></div>
<div class="viewcode-block" id="Cipher.final"><a class="viewcode-back" href="../../M2Crypto.html#M2Crypto.EVP.Cipher.final">[docs]</a> <span class="k">def</span> <span class="nf">final</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="c1"># type: () -> bytes</span>
<span class="k">return</span> <span class="n">m2</span><span class="o">.</span><span class="n">cipher_final</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">ctx</span><span class="p">)</span></div>
<div class="viewcode-block" id="Cipher.set_padding"><a class="viewcode-back" href="../../M2Crypto.html#M2Crypto.EVP.Cipher.set_padding">[docs]</a> <span class="k">def</span> <span class="nf">set_padding</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">padding</span><span class="o">=</span><span class="mi">1</span><span class="p">):</span>
<span class="c1"># type: (int) -> int</span>
<span class="sd">"""</span>
<span class="sd"> Actually always return 1</span>
<span class="sd"> """</span>
<span class="k">return</span> <span class="n">m2</span><span class="o">.</span><span class="n">cipher_set_padding</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">ctx</span><span class="p">,</span> <span class="n">padding</span><span class="p">)</span></div></div>
<div class="viewcode-block" id="PKey"><a class="viewcode-back" href="../../M2Crypto.html#M2Crypto.EVP.PKey">[docs]</a><span class="k">class</span> <span class="nc">PKey</span><span class="p">(</span><span class="nb">object</span><span class="p">):</span>
<span class="sd">"""</span>
<span class="sd"> Public Key</span>
<span class="sd"> """</span>
<span class="n">m2_pkey_free</span> <span class="o">=</span> <span class="n">m2</span><span class="o">.</span><span class="n">pkey_free</span>
<span class="n">m2_md_ctx_free</span> <span class="o">=</span> <span class="n">m2</span><span class="o">.</span><span class="n">md_ctx_free</span>
<span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">pkey</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">_pyfree</span><span class="o">=</span><span class="mi">0</span><span class="p">,</span> <span class="n">md</span><span class="o">=</span><span class="s1">'sha1'</span><span class="p">):</span>
<span class="c1"># type: (Optional[bytes], int, str) -> None</span>
<span class="k">if</span> <span class="n">pkey</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">pkey</span> <span class="o">=</span> <span class="n">pkey</span> <span class="c1"># type: bytes</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_pyfree</span> <span class="o">=</span> <span class="n">_pyfree</span>
<span class="k">else</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">pkey</span> <span class="o">=</span> <span class="n">m2</span><span class="o">.</span><span class="n">pkey_new</span><span class="p">()</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_pyfree</span> <span class="o">=</span> <span class="mi">1</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_set_context</span><span class="p">(</span><span class="n">md</span><span class="p">)</span>
<span class="k">def</span> <span class="fm">__del__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="c1"># type: () -> None</span>
<span class="k">if</span> <span class="nb">getattr</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="s1">'_pyfree'</span><span class="p">,</span> <span class="mi">0</span><span class="p">):</span>
<span class="bp">self</span><span class="o">.</span><span class="n">m2_pkey_free</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">pkey</span><span class="p">)</span>
<span class="k">if</span> <span class="nb">getattr</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="s1">'ctx'</span><span class="p">,</span> <span class="kc">None</span><span class="p">):</span>
<span class="bp">self</span><span class="o">.</span><span class="n">m2_md_ctx_free</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">ctx</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">_ptr</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">pkey</span>
<span class="k">def</span> <span class="nf">_set_context</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">md</span><span class="p">):</span>
<span class="c1"># type: (str) -> None</span>
<span class="k">if</span> <span class="ow">not</span> <span class="n">md</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">md</span> <span class="o">=</span> <span class="kc">None</span>
<span class="k">else</span><span class="p">:</span>
<span class="n">mda</span> <span class="o">=</span> <span class="nb">getattr</span><span class="p">(</span><span class="n">m2</span><span class="p">,</span> <span class="n">md</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span> <span class="c1"># type: Optional[Callable]</span>
<span class="k">if</span> <span class="n">mda</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span>
<span class="k">raise</span> <span class="ne">ValueError</span><span class="p">(</span><span class="s1">'unknown message digest'</span><span class="p">,</span> <span class="n">md</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">md</span> <span class="o">=</span> <span class="n">mda</span><span class="p">()</span>
<span class="bp">self</span><span class="o">.</span><span class="n">ctx</span> <span class="o">=</span> <span class="n">m2</span><span class="o">.</span><span class="n">md_ctx_new</span><span class="p">()</span> <span class="c1"># type: Context</span>
<div class="viewcode-block" id="PKey.reset_context"><a class="viewcode-back" href="../../M2Crypto.html#M2Crypto.EVP.PKey.reset_context">[docs]</a> <span class="k">def</span> <span class="nf">reset_context</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">md</span><span class="o">=</span><span class="s1">'sha1'</span><span class="p">):</span>
<span class="c1"># type: (str) -> None</span>
<span class="sd">"""</span>
<span class="sd"> Reset internal message digest context.</span>
<span class="sd"> :param md: The message digest algorithm.</span>
<span class="sd"> """</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_set_context</span><span class="p">(</span><span class="n">md</span><span class="p">)</span></div>
<div class="viewcode-block" id="PKey.sign_init"><a class="viewcode-back" href="../../M2Crypto.html#M2Crypto.EVP.PKey.sign_init">[docs]</a> <span class="k">def</span> <span class="nf">sign_init</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="c1"># type: () -> None</span>
<span class="sd">"""</span>
<span class="sd"> Initialise signing operation with self.</span>
<span class="sd"> """</span>
<span class="n">m2</span><span class="o">.</span><span class="n">sign_init</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">ctx</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">md</span><span class="p">)</span></div>
<div class="viewcode-block" id="PKey.sign_update"><a class="viewcode-back" href="../../M2Crypto.html#M2Crypto.EVP.PKey.sign_update">[docs]</a> <span class="k">def</span> <span class="nf">sign_update</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">data</span><span class="p">):</span>
<span class="c1"># type: (bytes) -> None</span>
<span class="sd">"""</span>
<span class="sd"> Feed data to signing operation.</span>
<span class="sd"> :param data: Data to be signed.</span>
<span class="sd"> """</span>
<span class="n">m2</span><span class="o">.</span><span class="n">sign_update</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">ctx</span><span class="p">,</span> <span class="n">data</span><span class="p">)</span></div>
<div class="viewcode-block" id="PKey.sign_final"><a class="viewcode-back" href="../../M2Crypto.html#M2Crypto.EVP.PKey.sign_final">[docs]</a> <span class="k">def</span> <span class="nf">sign_final</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="c1"># type: () -> bytes</span>
<span class="sd">"""</span>
<span class="sd"> Return signature.</span>
<span class="sd"> :return: The signature.</span>
<span class="sd"> """</span>
<span class="k">return</span> <span class="n">m2</span><span class="o">.</span><span class="n">sign_final</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">ctx</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">pkey</span><span class="p">)</span></div>
<span class="c1"># Deprecated</span>
<span class="n">update</span> <span class="o">=</span> <span class="n">sign_update</span>
<span class="n">final</span> <span class="o">=</span> <span class="n">sign_final</span>
<div class="viewcode-block" id="PKey.verify_init"><a class="viewcode-back" href="../../M2Crypto.html#M2Crypto.EVP.PKey.verify_init">[docs]</a> <span class="k">def</span> <span class="nf">verify_init</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="c1"># type: () -> None</span>
<span class="sd">"""</span>
<span class="sd"> Initialise signature verification operation with self.</span>
<span class="sd"> """</span>
<span class="n">m2</span><span class="o">.</span><span class="n">verify_init</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">ctx</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">md</span><span class="p">)</span></div>
<div class="viewcode-block" id="PKey.verify_update"><a class="viewcode-back" href="../../M2Crypto.html#M2Crypto.EVP.PKey.verify_update">[docs]</a> <span class="k">def</span> <span class="nf">verify_update</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">data</span><span class="p">):</span>
<span class="c1"># type: (bytes) -> int</span>
<span class="sd">"""</span>
<span class="sd"> Feed data to verification operation.</span>
<span class="sd"> :param data: Data to be verified.</span>
<span class="sd"> :return: -1 on Python error, 1 for success, 0 for OpenSSL error</span>
<span class="sd"> """</span>
<span class="k">return</span> <span class="n">m2</span><span class="o">.</span><span class="n">verify_update</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">ctx</span><span class="p">,</span> <span class="n">data</span><span class="p">)</span></div>
<div class="viewcode-block" id="PKey.verify_final"><a class="viewcode-back" href="../../M2Crypto.html#M2Crypto.EVP.PKey.verify_final">[docs]</a> <span class="k">def</span> <span class="nf">verify_final</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">sign</span><span class="p">):</span>
<span class="c1"># type: (bytes) -> int</span>
<span class="sd">"""</span>
<span class="sd"> Return result of verification.</span>
<span class="sd"> :param sign: Signature to use for verification</span>
<span class="sd"> :return: Result of verification: 1 for success, 0 for failure, -1 on</span>
<span class="sd"> other error.</span>
<span class="sd"> """</span>
<span class="k">return</span> <span class="n">m2</span><span class="o">.</span><span class="n">verify_final</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">ctx</span><span class="p">,</span> <span class="n">sign</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">pkey</span><span class="p">)</span></div>
<div class="viewcode-block" id="PKey.digest_sign_init"><a class="viewcode-back" href="../../M2Crypto.html#M2Crypto.EVP.PKey.digest_sign_init">[docs]</a> <span class="k">def</span> <span class="nf">digest_sign_init</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="c1"># type: () -> None</span>
<span class="sd">"""</span>
<span class="sd"> Initialise digest signing operation with self.</span>
<span class="sd"> """</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">md</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span>
<span class="n">m2</span><span class="o">.</span><span class="n">digest_sign_init</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">ctx</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">pkey</span><span class="p">)</span>
<span class="k">else</span><span class="p">:</span>
<span class="n">m2</span><span class="o">.</span><span class="n">digest_sign_init</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">ctx</span><span class="p">,</span> <span class="kc">None</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">md</span><span class="p">,</span> <span class="kc">None</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">pkey</span><span class="p">)</span></div>
<div class="viewcode-block" id="PKey.digest_sign_update"><a class="viewcode-back" href="../../M2Crypto.html#M2Crypto.EVP.PKey.digest_sign_update">[docs]</a> <span class="k">def</span> <span class="nf">digest_sign_update</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">data</span><span class="p">):</span>
<span class="c1"># type: (bytes) -> None</span>
<span class="sd">"""</span>
<span class="sd"> Feed data to digest signing operation.</span>
<span class="sd"> :param data: Data to be signed.</span>
<span class="sd"> """</span>
<span class="n">m2</span><span class="o">.</span><span class="n">digest_sign_update</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">ctx</span><span class="p">,</span> <span class="n">data</span><span class="p">)</span></div>
<div class="viewcode-block" id="PKey.digest_sign_final"><a class="viewcode-back" href="../../M2Crypto.html#M2Crypto.EVP.PKey.digest_sign_final">[docs]</a> <span class="k">def</span> <span class="nf">digest_sign_final</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="c1"># type: () -> bytes</span>
<span class="sd">"""</span>
<span class="sd"> Return signature.</span>
<span class="sd"> :return: The signature.</span>
<span class="sd"> """</span>
<span class="k">return</span> <span class="n">m2</span><span class="o">.</span><span class="n">digest_sign_final</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">ctx</span><span class="p">)</span></div>
<div class="viewcode-block" id="PKey.digest_sign"><a class="viewcode-back" href="../../M2Crypto.html#M2Crypto.EVP.PKey.digest_sign">[docs]</a> <span class="k">def</span> <span class="nf">digest_sign</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">data</span><span class="p">):</span>
<span class="c1"># type: () -> bytes</span>
<span class="sd">"""</span>
<span class="sd"> Return signature.</span>
<span class="sd"> :return: The signature.</span>
<span class="sd"> """</span>
<span class="k">return</span> <span class="n">m2</span><span class="o">.</span><span class="n">digest_sign</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">ctx</span><span class="p">,</span> <span class="n">data</span><span class="p">)</span></div>
<div class="viewcode-block" id="PKey.digest_verify_init"><a class="viewcode-back" href="../../M2Crypto.html#M2Crypto.EVP.PKey.digest_verify_init">[docs]</a> <span class="k">def</span> <span class="nf">digest_verify_init</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="c1"># type: () -> None</span>
<span class="sd">"""</span>
<span class="sd"> Initialise verification operation with self.</span>
<span class="sd"> """</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">md</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span>
<span class="n">m2</span><span class="o">.</span><span class="n">digest_verify_init</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">ctx</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">pkey</span><span class="p">)</span>
<span class="k">else</span><span class="p">:</span>
<span class="n">m2</span><span class="o">.</span><span class="n">digest_verify_init</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">ctx</span><span class="p">,</span> <span class="kc">None</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">md</span><span class="p">,</span> <span class="kc">None</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">pkey</span><span class="p">)</span></div>
<div class="viewcode-block" id="PKey.digest_verify_update"><a class="viewcode-back" href="../../M2Crypto.html#M2Crypto.EVP.PKey.digest_verify_update">[docs]</a> <span class="k">def</span> <span class="nf">digest_verify_update</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">data</span><span class="p">):</span>
<span class="c1"># type: (bytes) -> int</span>
<span class="sd">"""</span>
<span class="sd"> Feed data to verification operation.</span>
<span class="sd"> :param data: Data to be verified.</span>
<span class="sd"> :return: -1 on Python error, 1 for success, 0 for OpenSSL error</span>
<span class="sd"> """</span>
<span class="k">return</span> <span class="n">m2</span><span class="o">.</span><span class="n">digest_verify_update</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">ctx</span><span class="p">,</span> <span class="n">data</span><span class="p">)</span></div>
<div class="viewcode-block" id="PKey.digest_verify_final"><a class="viewcode-back" href="../../M2Crypto.html#M2Crypto.EVP.PKey.digest_verify_final">[docs]</a> <span class="k">def</span> <span class="nf">digest_verify_final</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">sign</span><span class="p">):</span>
<span class="c1"># type: (bytes) -> int</span>
<span class="sd">"""</span>
<span class="sd"> Feed data to digest verification operation.</span>
<span class="sd"> :param sign: Signature to use for verification</span>
<span class="sd"> :return: Result of verification: 1 for success, 0 for failure, -1 on</span>
<span class="sd"> other error.</span>
<span class="sd"> """</span>
<span class="k">return</span> <span class="n">m2</span><span class="o">.</span><span class="n">digest_verify_final</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">ctx</span><span class="p">,</span> <span class="n">sign</span><span class="p">)</span></div>
<div class="viewcode-block" id="PKey.digest_verify"><a class="viewcode-back" href="../../M2Crypto.html#M2Crypto.EVP.PKey.digest_verify">[docs]</a> <span class="k">def</span> <span class="nf">digest_verify</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">sign</span><span class="p">,</span> <span class="n">data</span><span class="p">):</span>
<span class="c1"># type: (bytes) -> int</span>
<span class="sd">"""</span>
<span class="sd"> Return result of verification.</span>
<span class="sd"> :param sign: Signature to use for verification</span>
<span class="sd"> :param data: Data to be verified.</span>
<span class="sd"> :return: Result of verification: 1 for success, 0 for failure, -1 on</span>
<span class="sd"> other error.</span>
<span class="sd"> """</span>
<span class="k">return</span> <span class="n">m2</span><span class="o">.</span><span class="n">digest_verify</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">ctx</span><span class="p">,</span> <span class="n">sign</span><span class="p">,</span> <span class="n">data</span><span class="p">)</span></div>
<div class="viewcode-block" id="PKey.assign_rsa"><a class="viewcode-back" href="../../M2Crypto.html#M2Crypto.EVP.PKey.assign_rsa">[docs]</a> <span class="k">def</span> <span class="nf">assign_rsa</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">rsa</span><span class="p">,</span> <span class="n">capture</span><span class="o">=</span><span class="mi">1</span><span class="p">):</span>
<span class="c1"># type: (RSA.RSA, int) -> int</span>
<span class="sd">"""</span>
<span class="sd"> Assign the RSA key pair to self.</span>
<span class="sd"> :param rsa: M2Crypto.RSA.RSA object to be assigned to self.</span>
<span class="sd"> :param capture: If true (default), this PKey object will own the RSA</span>
<span class="sd"> object, meaning that once the PKey object gets</span>
<span class="sd"> deleted it is no longer safe to use the RSA object.</span>
<span class="sd"> :return: Return 1 for success and 0 for failure.</span>
<span class="sd"> """</span>
<span class="k">if</span> <span class="n">capture</span><span class="p">:</span>
<span class="n">ret</span> <span class="o">=</span> <span class="n">m2</span><span class="o">.</span><span class="n">pkey_assign_rsa</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">pkey</span><span class="p">,</span> <span class="n">rsa</span><span class="o">.</span><span class="n">rsa</span><span class="p">)</span>
<span class="k">if</span> <span class="n">ret</span><span class="p">:</span>
<span class="n">rsa</span><span class="o">.</span><span class="n">_pyfree</span> <span class="o">=</span> <span class="mi">0</span>
<span class="k">else</span><span class="p">:</span>
<span class="n">ret</span> <span class="o">=</span> <span class="n">m2</span><span class="o">.</span><span class="n">pkey_set1_rsa</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">pkey</span><span class="p">,</span> <span class="n">rsa</span><span class="o">.</span><span class="n">rsa</span><span class="p">)</span>
<span class="k">return</span> <span class="n">ret</span></div>
<div class="viewcode-block" id="PKey.get_rsa"><a class="viewcode-back" href="../../M2Crypto.html#M2Crypto.EVP.PKey.get_rsa">[docs]</a> <span class="k">def</span> <span class="nf">get_rsa</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="c1"># type: () -> RSA.RSA_pub</span>
<span class="sd">"""</span>
<span class="sd"> Return the underlying RSA key if that is what the EVP</span>
<span class="sd"> instance is holding.</span>
<span class="sd"> """</span>
<span class="n">rsa_ptr</span> <span class="o">=</span> <span class="n">m2</span><span class="o">.</span><span class="n">pkey_get1_rsa</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">pkey</span><span class="p">)</span>
<span class="n">rsa</span> <span class="o">=</span> <span class="n">RSA</span><span class="o">.</span><span class="n">RSA_pub</span><span class="p">(</span><span class="n">rsa_ptr</span><span class="p">,</span> <span class="mi">1</span><span class="p">)</span>
<span class="k">return</span> <span class="n">rsa</span></div>
<div class="viewcode-block" id="PKey.save_key"><a class="viewcode-back" href="../../M2Crypto.html#M2Crypto.EVP.PKey.save_key">[docs]</a> <span class="k">def</span> <span class="nf">save_key</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">file</span><span class="p">,</span> <span class="n">cipher</span><span class="o">=</span><span class="s1">'aes_128_cbc'</span><span class="p">,</span>
<span class="n">callback</span><span class="o">=</span><span class="n">util</span><span class="o">.</span><span class="n">passphrase_callback</span><span class="p">):</span>
<span class="c1"># type: (AnyStr, Optional[str], Callable) -> int</span>
<span class="sd">"""</span>
<span class="sd"> Save the key pair to a file in PEM format.</span>
<span class="sd"> :param file: Name of file to save key to.</span>
<span class="sd"> :param cipher: Symmetric cipher to protect the key. The default</span>
<span class="sd"> cipher is 'aes_128_cbc'. If cipher is None, then</span>
<span class="sd"> the key is saved in the clear.</span>
<span class="sd"> :param callback: A Python callable object that is invoked</span>
<span class="sd"> to acquire a passphrase with which to protect</span>
<span class="sd"> the key. The default is</span>
<span class="sd"> util.passphrase_callback.</span>
<span class="sd"> """</span>
<span class="k">with</span> <span class="n">BIO</span><span class="o">.</span><span class="n">openfile</span><span class="p">(</span><span class="n">file</span><span class="p">,</span> <span class="s1">'wb'</span><span class="p">)</span> <span class="k">as</span> <span class="n">bio</span><span class="p">:</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">save_key_bio</span><span class="p">(</span><span class="n">bio</span><span class="p">,</span> <span class="n">cipher</span><span class="p">,</span> <span class="n">callback</span><span class="p">)</span></div>
<div class="viewcode-block" id="PKey.save_key_bio"><a class="viewcode-back" href="../../M2Crypto.html#M2Crypto.EVP.PKey.save_key_bio">[docs]</a> <span class="k">def</span> <span class="nf">save_key_bio</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">bio</span><span class="p">,</span> <span class="n">cipher</span><span class="o">=</span><span class="s1">'aes_128_cbc'</span><span class="p">,</span>
<span class="n">callback</span><span class="o">=</span><span class="n">util</span><span class="o">.</span><span class="n">passphrase_callback</span><span class="p">):</span>
<span class="c1"># type: (BIO.BIO, Optional[str], Callable) -> int</span>
<span class="sd">"""</span>
<span class="sd"> Save the key pair to the M2Crypto.BIO object 'bio' in PEM format.</span>
<span class="sd"> :param bio: M2Crypto.BIO object to save key to.</span>
<span class="sd"> :param cipher: Symmetric cipher to protect the key. The default</span>
<span class="sd"> cipher is 'aes_128_cbc'. If cipher is None, then</span>
<span class="sd"> the key is saved in the clear.</span>
<span class="sd"> :param callback: A Python callable object that is invoked</span>
<span class="sd"> to acquire a passphrase with which to protect</span>
<span class="sd"> the key. The default is</span>
<span class="sd"> util.passphrase_callback.</span>
<span class="sd"> """</span>
<span class="k">if</span> <span class="n">cipher</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span>
<span class="k">return</span> <span class="n">m2</span><span class="o">.</span><span class="n">pkey_write_pem_no_cipher</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">pkey</span><span class="p">,</span> <span class="n">bio</span><span class="o">.</span><span class="n">_ptr</span><span class="p">(),</span> <span class="n">callback</span><span class="p">)</span>
<span class="k">else</span><span class="p">:</span>
<span class="n">proto</span> <span class="o">=</span> <span class="nb">getattr</span><span class="p">(</span><span class="n">m2</span><span class="p">,</span> <span class="n">cipher</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span>
<span class="k">if</span> <span class="n">proto</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span>
<span class="k">raise</span> <span class="ne">ValueError</span><span class="p">(</span><span class="s1">'no such cipher </span><span class="si">%s</span><span class="s1">'</span> <span class="o">%</span> <span class="n">cipher</span><span class="p">)</span>
<span class="k">return</span> <span class="n">m2</span><span class="o">.</span><span class="n">pkey_write_pem</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">pkey</span><span class="p">,</span> <span class="n">bio</span><span class="o">.</span><span class="n">_ptr</span><span class="p">(),</span> <span class="n">proto</span><span class="p">(),</span> <span class="n">callback</span><span class="p">)</span></div>
<div class="viewcode-block" id="PKey.as_pem"><a class="viewcode-back" href="../../M2Crypto.html#M2Crypto.EVP.PKey.as_pem">[docs]</a> <span class="k">def</span> <span class="nf">as_pem</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">cipher</span><span class="o">=</span><span class="s1">'aes_128_cbc'</span><span class="p">,</span> <span class="n">callback</span><span class="o">=</span><span class="n">util</span><span class="o">.</span><span class="n">passphrase_callback</span><span class="p">):</span>
<span class="c1"># type: (Optional[str], Callable) -> bytes</span>
<span class="sd">"""</span>
<span class="sd"> Return key in PEM format in a string.</span>
<span class="sd"> :param cipher: Symmetric cipher to protect the key. The default</span>
<span class="sd"> cipher is ``'aes_128_cbc'``. If cipher is None,</span>
<span class="sd"> then the key is saved in the clear.</span>
<span class="sd"> :param callback: A Python callable object that is invoked</span>
<span class="sd"> to acquire a passphrase with which to protect</span>
<span class="sd"> the key. The default is</span>
<span class="sd"> util.passphrase_callback.</span>
<span class="sd"> """</span>
<span class="n">bio</span> <span class="o">=</span> <span class="n">BIO</span><span class="o">.</span><span class="n">MemoryBuffer</span><span class="p">()</span>
<span class="bp">self</span><span class="o">.</span><span class="n">save_key_bio</span><span class="p">(</span><span class="n">bio</span><span class="p">,</span> <span class="n">cipher</span><span class="p">,</span> <span class="n">callback</span><span class="p">)</span>
<span class="k">return</span> <span class="n">bio</span><span class="o">.</span><span class="n">read_all</span><span class="p">()</span></div>
<div class="viewcode-block" id="PKey.as_der"><a class="viewcode-back" href="../../M2Crypto.html#M2Crypto.EVP.PKey.as_der">[docs]</a> <span class="k">def</span> <span class="nf">as_der</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="c1"># type: () -> bytes</span>
<span class="sd">"""</span>
<span class="sd"> Return key in DER format in a string</span>
<span class="sd"> """</span>
<span class="n">buf</span> <span class="o">=</span> <span class="n">m2</span><span class="o">.</span><span class="n">pkey_as_der</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">pkey</span><span class="p">)</span>
<span class="n">bio</span> <span class="o">=</span> <span class="n">BIO</span><span class="o">.</span><span class="n">MemoryBuffer</span><span class="p">(</span><span class="n">buf</span><span class="p">)</span>
<span class="k">return</span> <span class="n">bio</span><span class="o">.</span><span class="n">read_all</span><span class="p">()</span></div>
<div class="viewcode-block" id="PKey.size"><a class="viewcode-back" href="../../M2Crypto.html#M2Crypto.EVP.PKey.size">[docs]</a> <span class="k">def</span> <span class="nf">size</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="c1"># type: () -> int</span>
<span class="sd">"""</span>
<span class="sd"> Return the size of the key in bytes.</span>
<span class="sd"> """</span>
<span class="k">return</span> <span class="n">m2</span><span class="o">.</span><span class="n">pkey_size</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">pkey</span><span class="p">)</span></div>
<div class="viewcode-block" id="PKey.get_modulus"><a class="viewcode-back" href="../../M2Crypto.html#M2Crypto.EVP.PKey.get_modulus">[docs]</a> <span class="k">def</span> <span class="nf">get_modulus</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="c1"># type: () -> Optional[bytes]</span>
<span class="sd">"""</span>
<span class="sd"> Return the modulus in hex format.</span>
<span class="sd"> """</span>
<span class="k">return</span> <span class="n">m2</span><span class="o">.</span><span class="n">pkey_get_modulus</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">pkey</span><span class="p">)</span></div></div>
<div class="viewcode-block" id="load_key"><a class="viewcode-back" href="../../M2Crypto.html#M2Crypto.EVP.load_key">[docs]</a><span class="k">def</span> <span class="nf">load_key</span><span class="p">(</span><span class="n">file</span><span class="p">,</span> <span class="n">callback</span><span class="o">=</span><span class="n">util</span><span class="o">.</span><span class="n">passphrase_callback</span><span class="p">):</span>
<span class="c1"># type: (AnyStr, Callable) -> PKey</span>
<span class="sd">"""</span>
<span class="sd"> Load an M2Crypto.EVP.PKey from file.</span>
<span class="sd"> :param file: Name of file containing the key in PEM format.</span>
<span class="sd"> :param callback: A Python callable object that is invoked</span>
<span class="sd"> to acquire a passphrase with which to protect the</span>
<span class="sd"> key.</span>
<span class="sd"> :return: M2Crypto.EVP.PKey object.</span>
<span class="sd"> """</span>
<span class="k">with</span> <span class="n">BIO</span><span class="o">.</span><span class="n">openfile</span><span class="p">(</span><span class="n">file</span><span class="p">,</span> <span class="s1">'r'</span><span class="p">)</span> <span class="k">as</span> <span class="n">bio</span><span class="p">:</span>
<span class="n">cptr</span> <span class="o">=</span> <span class="n">m2</span><span class="o">.</span><span class="n">pkey_read_pem</span><span class="p">(</span><span class="n">bio</span><span class="o">.</span><span class="n">bio</span><span class="p">,</span> <span class="n">callback</span><span class="p">)</span>
<span class="k">return</span> <span class="n">PKey</span><span class="p">(</span><span class="n">cptr</span><span class="p">,</span> <span class="mi">1</span><span class="p">)</span></div>
<div class="viewcode-block" id="load_key_pubkey"><a class="viewcode-back" href="../../M2Crypto.html#M2Crypto.EVP.load_key_pubkey">[docs]</a><span class="k">def</span> <span class="nf">load_key_pubkey</span><span class="p">(</span><span class="n">file</span><span class="p">,</span> <span class="n">callback</span><span class="o">=</span><span class="n">util</span><span class="o">.</span><span class="n">passphrase_callback</span><span class="p">):</span>
<span class="c1"># type: (AnyStr, Callable) -> PKey</span>
<span class="sd">"""</span>
<span class="sd"> Load an M2Crypto.EVP.PKey from a public key as a file.</span>
<span class="sd"> :param file: Name of file containing the key in PEM format.</span>
<span class="sd"> :param callback: A Python callable object that is invoked</span>
<span class="sd"> to acquire a passphrase with which to protect the</span>
<span class="sd"> key.</span>
<span class="sd"> :return: M2Crypto.EVP.PKey object.</span>
<span class="sd"> """</span>
<span class="k">with</span> <span class="n">BIO</span><span class="o">.</span><span class="n">openfile</span><span class="p">(</span><span class="n">file</span><span class="p">,</span> <span class="s1">'r'</span><span class="p">)</span> <span class="k">as</span> <span class="n">bio</span><span class="p">:</span>
<span class="n">cptr</span> <span class="o">=</span> <span class="n">m2</span><span class="o">.</span><span class="n">pkey_read_pem_pubkey</span><span class="p">(</span><span class="n">bio</span><span class="o">.</span><span class="n">_ptr</span><span class="p">(),</span> <span class="n">callback</span><span class="p">)</span>
<span class="k">if</span> <span class="n">cptr</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span>
<span class="k">raise</span> <span class="n">EVPError</span><span class="p">(</span><span class="n">Err</span><span class="o">.</span><span class="n">get_error</span><span class="p">())</span>
<span class="k">return</span> <span class="n">PKey</span><span class="p">(</span><span class="n">cptr</span><span class="p">,</span> <span class="mi">1</span><span class="p">)</span></div>
<div class="viewcode-block" id="load_key_bio"><a class="viewcode-back" href="../../M2Crypto.html#M2Crypto.EVP.load_key_bio">[docs]</a><span class="k">def</span> <span class="nf">load_key_bio</span><span class="p">(</span><span class="n">bio</span><span class="p">,</span> <span class="n">callback</span><span class="o">=</span><span class="n">util</span><span class="o">.</span><span class="n">passphrase_callback</span><span class="p">):</span>
<span class="c1"># type: (BIO.BIO, Callable) -> PKey</span>
<span class="sd">"""</span>
<span class="sd"> Load an M2Crypto.EVP.PKey from an M2Crypto.BIO object.</span>
<span class="sd"> :param bio: M2Crypto.BIO object containing the key in PEM format.</span>
<span class="sd"> :param callback: A Python callable object that is invoked</span>
<span class="sd"> to acquire a passphrase with which to protect the</span>
<span class="sd"> key.</span>
<span class="sd"> :return: M2Crypto.EVP.PKey object.</span>
<span class="sd"> """</span>
<span class="n">cptr</span> <span class="o">=</span> <span class="n">m2</span><span class="o">.</span><span class="n">pkey_read_pem</span><span class="p">(</span><span class="n">bio</span><span class="o">.</span><span class="n">_ptr</span><span class="p">(),</span> <span class="n">callback</span><span class="p">)</span>
<span class="k">return</span> <span class="n">PKey</span><span class="p">(</span><span class="n">cptr</span><span class="p">,</span> <span class="mi">1</span><span class="p">)</span></div>
<div class="viewcode-block" id="load_key_bio_pubkey"><a class="viewcode-back" href="../../M2Crypto.html#M2Crypto.EVP.load_key_bio_pubkey">[docs]</a><span class="k">def</span> <span class="nf">load_key_bio_pubkey</span><span class="p">(</span><span class="n">bio</span><span class="p">,</span> <span class="n">callback</span><span class="o">=</span><span class="n">util</span><span class="o">.</span><span class="n">passphrase_callback</span><span class="p">):</span>
<span class="c1"># type: (BIO.BIO, Callable) -> PKey</span>
<span class="sd">"""</span>
<span class="sd"> Load an M2Crypto.EVP.PKey from a public key as a M2Crypto.BIO object.</span>
<span class="sd"> :param bio: M2Crypto.BIO object containing the key in PEM format.</span>
<span class="sd"> :param callback: A Python callable object that is invoked</span>
<span class="sd"> to acquire a passphrase with which to protect the</span>
<span class="sd"> key.</span>
<span class="sd"> :return: M2Crypto.EVP.PKey object.</span>
<span class="sd"> """</span>
<span class="n">cptr</span> <span class="o">=</span> <span class="n">m2</span><span class="o">.</span><span class="n">pkey_read_pem_pubkey</span><span class="p">(</span><span class="n">bio</span><span class="o">.</span><span class="n">_ptr</span><span class="p">(),</span> <span class="n">callback</span><span class="p">)</span>
<span class="k">if</span> <span class="n">cptr</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span>
<span class="k">raise</span> <span class="n">EVPError</span><span class="p">(</span><span class="n">Err</span><span class="o">.</span><span class="n">get_error</span><span class="p">())</span>
<span class="k">return</span> <span class="n">PKey</span><span class="p">(</span><span class="n">cptr</span><span class="p">,</span> <span class="mi">1</span><span class="p">)</span></div>
<div class="viewcode-block" id="load_key_string"><a class="viewcode-back" href="../../M2Crypto.html#M2Crypto.EVP.load_key_string">[docs]</a><span class="k">def</span> <span class="nf">load_key_string</span><span class="p">(</span><span class="n">string</span><span class="p">,</span> <span class="n">callback</span><span class="o">=</span><span class="n">util</span><span class="o">.</span><span class="n">passphrase_callback</span><span class="p">):</span>
<span class="c1"># type: (AnyStr, Callable) -> PKey</span>
<span class="sd">"""</span>
<span class="sd"> Load an M2Crypto.EVP.PKey from a string.</span>
<span class="sd"> :param string: String containing the key in PEM format.</span>
<span class="sd"> :param callback: A Python callable object that is invoked</span>
<span class="sd"> to acquire a passphrase with which to protect the</span>
<span class="sd"> key.</span>
<span class="sd"> :return: M2Crypto.EVP.PKey object.</span>
<span class="sd"> """</span>
<span class="n">bio</span> <span class="o">=</span> <span class="n">BIO</span><span class="o">.</span><span class="n">MemoryBuffer</span><span class="p">(</span><span class="n">string</span><span class="p">)</span>
<span class="k">return</span> <span class="n">load_key_bio</span><span class="p">(</span><span class="n">bio</span><span class="p">,</span> <span class="n">callback</span><span class="p">)</span></div>
<div class="viewcode-block" id="load_key_string_pubkey"><a class="viewcode-back" href="../../M2Crypto.html#M2Crypto.EVP.load_key_string_pubkey">[docs]</a><span class="k">def</span> <span class="nf">load_key_string_pubkey</span><span class="p">(</span><span class="n">string</span><span class="p">,</span> <span class="n">callback</span><span class="o">=</span><span class="n">util</span><span class="o">.</span><span class="n">passphrase_callback</span><span class="p">):</span>
<span class="c1"># type: (AnyStr, Callable) -> PKey</span>
<span class="sd">"""</span>
<span class="sd"> Load an M2Crypto.EVP.PKey from a public key as a string.</span>
<span class="sd"> :param string: String containing the key in PEM format.</span>
<span class="sd"> :param callback: A Python callable object that is invoked</span>
<span class="sd"> to acquire a passphrase with which to protect the</span>
<span class="sd"> key.</span>
<span class="sd"> :return: M2Crypto.EVP.PKey object.</span>
<span class="sd"> """</span>
<span class="n">bio</span> <span class="o">=</span> <span class="n">BIO</span><span class="o">.</span><span class="n">MemoryBuffer</span><span class="p">(</span><span class="n">string</span><span class="p">)</span>
<span class="k">return</span> <span class="n">load_key_bio_pubkey</span><span class="p">(</span><span class="n">bio</span><span class="p">,</span> <span class="n">callback</span><span class="p">)</span></div>
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