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</pre><pre class='rust '>
<span class='kw'>use</span> <span class='ident'>ffi</span>;
<span class='kw'>use</span> <span class='ident'>std</span>::<span class='ident'>fmt</span>;
<span class='kw'>use</span> <span class='ident'>ssl</span>::<span class='ident'>error</span>::{<span class='ident'>SslError</span>, <span class='ident'>StreamError</span>};
<span class='kw'>use</span> <span class='ident'>std</span>::<span class='ident'>ptr</span>;
<span class='kw'>use</span> <span class='ident'>std</span>::<span class='ident'>io</span>::{<span class='self'>self</span>, <span class='ident'>Read</span>, <span class='ident'>Write</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'>bn</span>::<span class='ident'>BigNum</span>;
<span class='kw'>use</span> <span class='ident'>bio</span>::<span class='ident'>MemBio</span>;
<span class='kw'>use</span> <span class='ident'>crypto</span>::<span class='ident'>HashTypeInternals</span>;
<span class='kw'>use</span> <span class='ident'>crypto</span>::<span class='ident'>hash</span>;

<span class='kw'>pub</span> <span class='kw'>struct</span> <span class='ident'>RSA</span>(<span class='op'>*</span><span class='kw-2'>mut</span> <span class='ident'>ffi</span>::<span class='ident'>RSA</span>);

<span class='kw'>impl</span> <span class='ident'>Drop</span> <span class='kw'>for</span> <span class='ident'>RSA</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'>RSA_free</span>(<span class='self'>self</span>.<span class='number'>0</span>);
        }
    }
}

<span class='kw'>impl</span> <span class='ident'>RSA</span> {
    <span class='doccomment'>/// only useful for associating the key material directly with the key, it&#39;s safer to use</span>
    <span class='doccomment'>/// the supplied load and save methods for DER formatted keys.</span>
    <span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>from_public_components</span>(<span class='ident'>n</span>: <span class='ident'>BigNum</span>, <span class='ident'>e</span>: <span class='ident'>BigNum</span>) <span class='op'>-&gt;</span> <span class='prelude-ty'>Result</span><span class='op'>&lt;</span><span class='ident'>RSA</span>, <span class='ident'>SslError</span><span class='op'>&gt;</span> {
        <span class='kw'>unsafe</span> {
            <span class='kw'>let</span> <span class='ident'>rsa</span> <span class='op'>=</span> <span class='macro'>try_ssl_null</span><span class='macro'>!</span>(<span class='ident'>ffi</span>::<span class='ident'>RSA_new</span>());
            (<span class='op'>*</span><span class='ident'>rsa</span>).<span class='ident'>n</span> <span class='op'>=</span> <span class='ident'>n</span>.<span class='ident'>into_raw</span>();
            (<span class='op'>*</span><span class='ident'>rsa</span>).<span class='ident'>e</span> <span class='op'>=</span> <span class='ident'>e</span>.<span class='ident'>into_raw</span>();
            <span class='prelude-val'>Ok</span>(<span class='ident'>RSA</span>(<span class='ident'>rsa</span>))
        }
    }

    <span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>from_private_components</span>(<span class='ident'>n</span>: <span class='ident'>BigNum</span>,
                                   <span class='ident'>e</span>: <span class='ident'>BigNum</span>,
                                   <span class='ident'>d</span>: <span class='ident'>BigNum</span>,
                                   <span class='ident'>p</span>: <span class='ident'>BigNum</span>,
                                   <span class='ident'>q</span>: <span class='ident'>BigNum</span>,
                                   <span class='ident'>dp</span>: <span class='ident'>BigNum</span>,
                                   <span class='ident'>dq</span>: <span class='ident'>BigNum</span>,
                                   <span class='ident'>qi</span>: <span class='ident'>BigNum</span>)
                                   <span class='op'>-&gt;</span> <span class='prelude-ty'>Result</span><span class='op'>&lt;</span><span class='ident'>RSA</span>, <span class='ident'>SslError</span><span class='op'>&gt;</span> {
        <span class='kw'>unsafe</span> {
            <span class='kw'>let</span> <span class='ident'>rsa</span> <span class='op'>=</span> <span class='macro'>try_ssl_null</span><span class='macro'>!</span>(<span class='ident'>ffi</span>::<span class='ident'>RSA_new</span>());
            (<span class='op'>*</span><span class='ident'>rsa</span>).<span class='ident'>n</span> <span class='op'>=</span> <span class='ident'>n</span>.<span class='ident'>into_raw</span>();
            (<span class='op'>*</span><span class='ident'>rsa</span>).<span class='ident'>e</span> <span class='op'>=</span> <span class='ident'>e</span>.<span class='ident'>into_raw</span>();
            (<span class='op'>*</span><span class='ident'>rsa</span>).<span class='ident'>d</span> <span class='op'>=</span> <span class='ident'>d</span>.<span class='ident'>into_raw</span>();
            (<span class='op'>*</span><span class='ident'>rsa</span>).<span class='ident'>p</span> <span class='op'>=</span> <span class='ident'>p</span>.<span class='ident'>into_raw</span>();
            (<span class='op'>*</span><span class='ident'>rsa</span>).<span class='ident'>q</span> <span class='op'>=</span> <span class='ident'>q</span>.<span class='ident'>into_raw</span>();
            (<span class='op'>*</span><span class='ident'>rsa</span>).<span class='ident'>dmp1</span> <span class='op'>=</span> <span class='ident'>dp</span>.<span class='ident'>into_raw</span>();
            (<span class='op'>*</span><span class='ident'>rsa</span>).<span class='ident'>dmq1</span> <span class='op'>=</span> <span class='ident'>dq</span>.<span class='ident'>into_raw</span>();
            (<span class='op'>*</span><span class='ident'>rsa</span>).<span class='ident'>iqmp</span> <span class='op'>=</span> <span class='ident'>qi</span>.<span class='ident'>into_raw</span>();
            <span class='prelude-val'>Ok</span>(<span class='ident'>RSA</span>(<span class='ident'>rsa</span>))
        }
    }

    <span class='doccomment'>/// the caller should assert that the rsa pointer is valid.</span>
    <span class='kw'>pub</span> <span class='kw'>unsafe</span> <span class='kw'>fn</span> <span class='ident'>from_raw</span>(<span class='ident'>rsa</span>: <span class='op'>*</span><span class='kw-2'>mut</span> <span class='ident'>ffi</span>::<span class='ident'>RSA</span>) <span class='op'>-&gt;</span> <span class='ident'>RSA</span> {
        <span class='ident'>RSA</span>(<span class='ident'>rsa</span>)
    }

    <span class='doccomment'>/// Reads an RSA private key from PEM formatted data.</span>
    <span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>private_key_from_pem</span><span class='op'>&lt;</span><span class='ident'>R</span><span class='op'>&gt;</span>(<span class='ident'>reader</span>: <span class='kw-2'>&amp;</span><span class='kw-2'>mut</span> <span class='ident'>R</span>) <span class='op'>-&gt;</span> <span class='prelude-ty'>Result</span><span class='op'>&lt;</span><span class='ident'>RSA</span>, <span class='ident'>SslError</span><span class='op'>&gt;</span>
        <span class='kw'>where</span> <span class='ident'>R</span>: <span class='ident'>Read</span>
    {
        <span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>mem_bio</span> <span class='op'>=</span> <span class='macro'>try</span><span class='macro'>!</span>(<span class='ident'>MemBio</span>::<span class='ident'>new</span>());
        <span class='macro'>try</span><span class='macro'>!</span>(<span class='ident'>io</span>::<span class='ident'>copy</span>(<span class='ident'>reader</span>, <span class='kw-2'>&amp;</span><span class='kw-2'>mut</span> <span class='ident'>mem_bio</span>).<span class='ident'>map_err</span>(<span class='ident'>StreamError</span>));

        <span class='kw'>unsafe</span> {
            <span class='kw'>let</span> <span class='ident'>rsa</span> <span class='op'>=</span> <span class='macro'>try_ssl_null</span><span class='macro'>!</span>(<span class='ident'>ffi</span>::<span class='ident'>PEM_read_bio_RSAPrivateKey</span>(<span class='ident'>mem_bio</span>.<span class='ident'>get_handle</span>(),
                                                                    <span class='ident'>ptr</span>::<span class='ident'>null_mut</span>(),
                                                                    <span class='prelude-val'>None</span>,
                                                                    <span class='ident'>ptr</span>::<span class='ident'>null_mut</span>()));
            <span class='prelude-val'>Ok</span>(<span class='ident'>RSA</span>(<span class='ident'>rsa</span>))
        }
    }

    <span class='doccomment'>/// Writes an RSA private key as unencrypted PEM formatted data</span>
    <span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>private_key_to_pem</span><span class='op'>&lt;</span><span class='ident'>W</span><span class='op'>&gt;</span>(<span class='kw-2'>&amp;</span><span class='self'>self</span>, <span class='ident'>writer</span>: <span class='kw-2'>&amp;</span><span class='kw-2'>mut</span> <span class='ident'>W</span>) <span class='op'>-&gt;</span> <span class='prelude-ty'>Result</span><span class='op'>&lt;</span>(), <span class='ident'>SslError</span><span class='op'>&gt;</span>
        <span class='kw'>where</span> <span class='ident'>W</span>: <span class='ident'>Write</span>
    {
        <span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>mem_bio</span> <span class='op'>=</span> <span class='macro'>try</span><span class='macro'>!</span>(<span class='ident'>MemBio</span>::<span class='ident'>new</span>());

        <span class='kw'>let</span> <span class='ident'>result</span> <span class='op'>=</span> <span class='kw'>unsafe</span> {
            <span class='ident'>ffi</span>::<span class='ident'>PEM_write_bio_RSAPrivateKey</span>(<span class='ident'>mem_bio</span>.<span class='ident'>get_handle</span>(),
                                             <span class='self'>self</span>.<span class='number'>0</span>,
                                             <span class='ident'>ptr</span>::<span class='ident'>null</span>(),
                                             <span class='ident'>ptr</span>::<span class='ident'>null_mut</span>(),
                                             <span class='number'>0</span>,
                                             <span class='prelude-val'>None</span>,
                                             <span class='ident'>ptr</span>::<span class='ident'>null_mut</span>())
        };

        <span class='kw'>if</span> <span class='ident'>result</span> <span class='op'>==</span> <span class='number'>1</span> {
            <span class='macro'>try</span><span class='macro'>!</span>(<span class='ident'>io</span>::<span class='ident'>copy</span>(<span class='kw-2'>&amp;</span><span class='kw-2'>mut</span> <span class='ident'>mem_bio</span>, <span class='ident'>writer</span>).<span class='ident'>map_err</span>(<span class='ident'>StreamError</span>));

            <span class='prelude-val'>Ok</span>(())
        } <span class='kw'>else</span> {
            <span class='prelude-val'>Err</span>(<span class='ident'>SslError</span>::<span class='ident'>OpenSslErrors</span>(<span class='macro'>vec</span><span class='macro'>!</span>[]))
        }
    }

    <span class='doccomment'>/// Reads an RSA public key from PEM formatted data.</span>
    <span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>public_key_from_pem</span><span class='op'>&lt;</span><span class='ident'>R</span><span class='op'>&gt;</span>(<span class='ident'>reader</span>: <span class='kw-2'>&amp;</span><span class='kw-2'>mut</span> <span class='ident'>R</span>) <span class='op'>-&gt;</span> <span class='prelude-ty'>Result</span><span class='op'>&lt;</span><span class='ident'>RSA</span>, <span class='ident'>SslError</span><span class='op'>&gt;</span>
        <span class='kw'>where</span> <span class='ident'>R</span>: <span class='ident'>Read</span>
    {
        <span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>mem_bio</span> <span class='op'>=</span> <span class='macro'>try</span><span class='macro'>!</span>(<span class='ident'>MemBio</span>::<span class='ident'>new</span>());
        <span class='macro'>try</span><span class='macro'>!</span>(<span class='ident'>io</span>::<span class='ident'>copy</span>(<span class='ident'>reader</span>, <span class='kw-2'>&amp;</span><span class='kw-2'>mut</span> <span class='ident'>mem_bio</span>).<span class='ident'>map_err</span>(<span class='ident'>StreamError</span>));

        <span class='kw'>unsafe</span> {
            <span class='kw'>let</span> <span class='ident'>rsa</span> <span class='op'>=</span> <span class='macro'>try_ssl_null</span><span class='macro'>!</span>(<span class='ident'>ffi</span>::<span class='ident'>PEM_read_bio_RSA_PUBKEY</span>(<span class='ident'>mem_bio</span>.<span class='ident'>get_handle</span>(),
                                                                 <span class='ident'>ptr</span>::<span class='ident'>null_mut</span>(),
                                                                 <span class='prelude-val'>None</span>,
                                                                 <span class='ident'>ptr</span>::<span class='ident'>null_mut</span>()));
            <span class='prelude-val'>Ok</span>(<span class='ident'>RSA</span>(<span class='ident'>rsa</span>))
        }
    }

    <span class='doccomment'>/// Writes an RSA public key as PEM formatted data</span>
    <span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>public_key_to_pem</span><span class='op'>&lt;</span><span class='ident'>W</span><span class='op'>&gt;</span>(<span class='kw-2'>&amp;</span><span class='self'>self</span>, <span class='ident'>writer</span>: <span class='kw-2'>&amp;</span><span class='kw-2'>mut</span> <span class='ident'>W</span>) <span class='op'>-&gt;</span> <span class='prelude-ty'>Result</span><span class='op'>&lt;</span>(), <span class='ident'>SslError</span><span class='op'>&gt;</span>
        <span class='kw'>where</span> <span class='ident'>W</span>: <span class='ident'>Write</span>
    {
        <span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>mem_bio</span> <span class='op'>=</span> <span class='macro'>try</span><span class='macro'>!</span>(<span class='ident'>MemBio</span>::<span class='ident'>new</span>());

        <span class='kw'>let</span> <span class='ident'>result</span> <span class='op'>=</span> <span class='kw'>unsafe</span> { <span class='ident'>ffi</span>::<span class='ident'>PEM_write_bio_RSA_PUBKEY</span>(<span class='ident'>mem_bio</span>.<span class='ident'>get_handle</span>(), <span class='self'>self</span>.<span class='number'>0</span>) };

        <span class='kw'>if</span> <span class='ident'>result</span> <span class='op'>==</span> <span class='number'>1</span> {
            <span class='macro'>try</span><span class='macro'>!</span>(<span class='ident'>io</span>::<span class='ident'>copy</span>(<span class='kw-2'>&amp;</span><span class='kw-2'>mut</span> <span class='ident'>mem_bio</span>, <span class='ident'>writer</span>).<span class='ident'>map_err</span>(<span class='ident'>StreamError</span>));

            <span class='prelude-val'>Ok</span>(())
        } <span class='kw'>else</span> {
            <span class='prelude-val'>Err</span>(<span class='ident'>SslError</span>::<span class='ident'>OpenSslErrors</span>(<span class='macro'>vec</span><span class='macro'>!</span>[]))
        }
    }

    <span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>size</span>(<span class='kw-2'>&amp;</span><span class='self'>self</span>) <span class='op'>-&gt;</span> <span class='prelude-ty'>Result</span><span class='op'>&lt;</span><span class='ident'>u32</span>, <span class='ident'>SslError</span><span class='op'>&gt;</span> {
        <span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>has_n</span>() {
            <span class='kw'>unsafe</span> { <span class='prelude-val'>Ok</span>(<span class='ident'>ffi</span>::<span class='ident'>RSA_size</span>(<span class='self'>self</span>.<span class='number'>0</span>) <span class='kw'>as</span> <span class='ident'>u32</span>) }
        } <span class='kw'>else</span> {
            <span class='prelude-val'>Err</span>(<span class='ident'>SslError</span>::<span class='ident'>OpenSslErrors</span>(<span class='macro'>vec</span><span class='macro'>!</span>[]))
        }
    }

    <span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>sign</span>(<span class='kw-2'>&amp;</span><span class='self'>self</span>, <span class='ident'>hash</span>: <span class='ident'>hash</span>::<span class='ident'>Type</span>, <span class='ident'>message</span>: <span class='kw-2'>&amp;</span>[<span class='ident'>u8</span>]) <span class='op'>-&gt;</span> <span class='prelude-ty'>Result</span><span class='op'>&lt;</span><span class='ident'>Vec</span><span class='op'>&lt;</span><span class='ident'>u8</span><span class='op'>&gt;</span>, <span class='ident'>SslError</span><span class='op'>&gt;</span> {
        <span class='kw'>let</span> <span class='ident'>k_len</span> <span class='op'>=</span> <span class='macro'>try</span><span class='macro'>!</span>(<span class='self'>self</span>.<span class='ident'>size</span>());
        <span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>sig</span> <span class='op'>=</span> <span class='macro'>vec</span><span class='macro'>!</span>[<span class='number'>0</span>;<span class='ident'>k_len</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'>sig_len</span> <span class='op'>=</span> <span class='ident'>k_len</span>;

        <span class='kw'>unsafe</span> {
            <span class='kw'>let</span> <span class='ident'>result</span> <span class='op'>=</span> <span class='ident'>ffi</span>::<span class='ident'>RSA_sign</span>(<span class='ident'>hash</span>.<span class='ident'>as_nid</span>() <span class='kw'>as</span> <span class='ident'>c_int</span>,
                                       <span class='ident'>message</span>.<span class='ident'>as_ptr</span>(),
                                       <span class='ident'>message</span>.<span class='ident'>len</span>() <span class='kw'>as</span> <span class='ident'>u32</span>,
                                       <span class='ident'>sig</span>.<span class='ident'>as_mut_ptr</span>(),
                                       <span class='kw-2'>&amp;</span><span class='kw-2'>mut</span> <span class='ident'>sig_len</span>,
                                       <span class='self'>self</span>.<span class='number'>0</span>);
            <span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>sig_len</span> <span class='op'>==</span> <span class='ident'>k_len</span>);

            <span class='kw'>if</span> <span class='ident'>result</span> <span class='op'>==</span> <span class='number'>1</span> {
                <span class='prelude-val'>Ok</span>(<span class='ident'>sig</span>)
            } <span class='kw'>else</span> {
                <span class='prelude-val'>Err</span>(<span class='ident'>SslError</span>::<span class='ident'>OpenSslErrors</span>(<span class='macro'>vec</span><span class='macro'>!</span>[]))
            }
        }
    }

    <span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>verify</span>(<span class='kw-2'>&amp;</span><span class='self'>self</span>, <span class='ident'>hash</span>: <span class='ident'>hash</span>::<span class='ident'>Type</span>, <span class='ident'>message</span>: <span class='kw-2'>&amp;</span>[<span class='ident'>u8</span>], <span class='ident'>sig</span>: <span class='kw-2'>&amp;</span>[<span class='ident'>u8</span>]) <span class='op'>-&gt;</span> <span class='prelude-ty'>Result</span><span class='op'>&lt;</span><span class='ident'>bool</span>, <span class='ident'>SslError</span><span class='op'>&gt;</span> {
        <span class='kw'>unsafe</span> {
            <span class='kw'>let</span> <span class='ident'>result</span> <span class='op'>=</span> <span class='ident'>ffi</span>::<span class='ident'>RSA_verify</span>(<span class='ident'>hash</span>.<span class='ident'>as_nid</span>() <span class='kw'>as</span> <span class='ident'>c_int</span>,
                                         <span class='ident'>message</span>.<span class='ident'>as_ptr</span>(),
                                         <span class='ident'>message</span>.<span class='ident'>len</span>() <span class='kw'>as</span> <span class='ident'>u32</span>,
                                         <span class='ident'>sig</span>.<span class='ident'>as_ptr</span>(),
                                         <span class='ident'>sig</span>.<span class='ident'>len</span>() <span class='kw'>as</span> <span class='ident'>u32</span>,
                                         <span class='self'>self</span>.<span class='number'>0</span>);

            <span class='prelude-val'>Ok</span>(<span class='ident'>result</span> <span class='op'>==</span> <span class='number'>1</span>)
        }
    }

    <span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>as_ptr</span>(<span class='kw-2'>&amp;</span><span class='self'>self</span>) <span class='op'>-&gt;</span> <span class='op'>*</span><span class='kw-2'>mut</span> <span class='ident'>ffi</span>::<span class='ident'>RSA</span> {
        <span class='self'>self</span>.<span class='number'>0</span>
    }

    <span class='comment'>// The following getters are unsafe, since BigNum::new_from_ffi fails upon null pointers</span>
    <span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>n</span>(<span class='kw-2'>&amp;</span><span class='self'>self</span>) <span class='op'>-&gt;</span> <span class='prelude-ty'>Result</span><span class='op'>&lt;</span><span class='ident'>BigNum</span>, <span class='ident'>SslError</span><span class='op'>&gt;</span> {
        <span class='kw'>unsafe</span> { <span class='ident'>BigNum</span>::<span class='ident'>new_from_ffi</span>((<span class='op'>*</span><span class='self'>self</span>.<span class='number'>0</span>).<span class='ident'>n</span>) }
    }

    <span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>has_n</span>(<span class='kw-2'>&amp;</span><span class='self'>self</span>) <span class='op'>-&gt;</span> <span class='ident'>bool</span> {
        <span class='kw'>unsafe</span> { <span class='op'>!</span>(<span class='op'>*</span><span class='self'>self</span>.<span class='number'>0</span>).<span class='ident'>n</span>.<span class='ident'>is_null</span>() }
    }

    <span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>d</span>(<span class='kw-2'>&amp;</span><span class='self'>self</span>) <span class='op'>-&gt;</span> <span class='prelude-ty'>Result</span><span class='op'>&lt;</span><span class='ident'>BigNum</span>, <span class='ident'>SslError</span><span class='op'>&gt;</span> {
        <span class='kw'>unsafe</span> { <span class='ident'>BigNum</span>::<span class='ident'>new_from_ffi</span>((<span class='op'>*</span><span class='self'>self</span>.<span class='number'>0</span>).<span class='ident'>d</span>) }
    }

    <span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>e</span>(<span class='kw-2'>&amp;</span><span class='self'>self</span>) <span class='op'>-&gt;</span> <span class='prelude-ty'>Result</span><span class='op'>&lt;</span><span class='ident'>BigNum</span>, <span class='ident'>SslError</span><span class='op'>&gt;</span> {
        <span class='kw'>unsafe</span> { <span class='ident'>BigNum</span>::<span class='ident'>new_from_ffi</span>((<span class='op'>*</span><span class='self'>self</span>.<span class='number'>0</span>).<span class='ident'>e</span>) }
    }

    <span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>has_e</span>(<span class='kw-2'>&amp;</span><span class='self'>self</span>) <span class='op'>-&gt;</span> <span class='ident'>bool</span> {
        <span class='kw'>unsafe</span> { <span class='op'>!</span>(<span class='op'>*</span><span class='self'>self</span>.<span class='number'>0</span>).<span class='ident'>e</span>.<span class='ident'>is_null</span>() }
    }

    <span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>p</span>(<span class='kw-2'>&amp;</span><span class='self'>self</span>) <span class='op'>-&gt;</span> <span class='prelude-ty'>Result</span><span class='op'>&lt;</span><span class='ident'>BigNum</span>, <span class='ident'>SslError</span><span class='op'>&gt;</span> {
        <span class='kw'>unsafe</span> { <span class='ident'>BigNum</span>::<span class='ident'>new_from_ffi</span>((<span class='op'>*</span><span class='self'>self</span>.<span class='number'>0</span>).<span class='ident'>p</span>) }
    }

    <span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>q</span>(<span class='kw-2'>&amp;</span><span class='self'>self</span>) <span class='op'>-&gt;</span> <span class='prelude-ty'>Result</span><span class='op'>&lt;</span><span class='ident'>BigNum</span>, <span class='ident'>SslError</span><span class='op'>&gt;</span> {
        <span class='kw'>unsafe</span> { <span class='ident'>BigNum</span>::<span class='ident'>new_from_ffi</span>((<span class='op'>*</span><span class='self'>self</span>.<span class='number'>0</span>).<span class='ident'>q</span>) }
    }
}

<span class='kw'>impl</span> <span class='ident'>fmt</span>::<span class='ident'>Debug</span> <span class='kw'>for</span> <span class='ident'>RSA</span> {
    <span class='kw'>fn</span> <span class='ident'>fmt</span>(<span class='kw-2'>&amp;</span><span class='self'>self</span>, <span class='ident'>f</span>: <span class='kw-2'>&amp;</span><span class='kw-2'>mut</span> <span class='ident'>fmt</span>::<span class='ident'>Formatter</span>) <span class='op'>-&gt;</span> <span class='ident'>fmt</span>::<span class='prelude-ty'>Result</span> {
        <span class='macro'>write</span><span class='macro'>!</span>(<span class='ident'>f</span>, <span class='string'>&quot;RSA&quot;</span>)
    }
}

<span class='attribute'>#[<span class='ident'>cfg</span>(<span class='ident'>test</span>)]</span>
<span class='kw'>mod</span> <span class='ident'>test</span> {
    <span class='kw'>use</span> <span class='ident'>std</span>::<span class='ident'>fs</span>::<span class='ident'>File</span>;
    <span class='kw'>use</span> <span class='ident'>std</span>::<span class='ident'>io</span>::<span class='ident'>Write</span>;
    <span class='kw'>use</span> <span class='kw'>super</span>::<span class='op'>*</span>;
    <span class='kw'>use</span> <span class='ident'>crypto</span>::<span class='ident'>hash</span>::<span class='op'>*</span>;

    <span class='kw'>fn</span> <span class='ident'>signing_input_rs256</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='macro'>vec</span><span class='macro'>!</span>[<span class='number'>101</span>, <span class='number'>121</span>, <span class='number'>74</span>, <span class='number'>104</span>, <span class='number'>98</span>, <span class='number'>71</span>, <span class='number'>99</span>, <span class='number'>105</span>, <span class='number'>79</span>, <span class='number'>105</span>, <span class='number'>74</span>, <span class='number'>83</span>, <span class='number'>85</span>, <span class='number'>122</span>, <span class='number'>73</span>, <span class='number'>49</span>, <span class='number'>78</span>, <span class='number'>105</span>, <span class='number'>74</span>, <span class='number'>57</span>,
             <span class='number'>46</span>, <span class='number'>101</span>, <span class='number'>121</span>, <span class='number'>74</span>, <span class='number'>112</span>, <span class='number'>99</span>, <span class='number'>51</span>, <span class='number'>77</span>, <span class='number'>105</span>, <span class='number'>79</span>, <span class='number'>105</span>, <span class='number'>74</span>, <span class='number'>113</span>, <span class='number'>98</span>, <span class='number'>50</span>, <span class='number'>85</span>, <span class='number'>105</span>, <span class='number'>76</span>, <span class='number'>65</span>, <span class='number'>48</span>,
             <span class='number'>75</span>, <span class='number'>73</span>, <span class='number'>67</span>, <span class='number'>74</span>, <span class='number'>108</span>, <span class='number'>101</span>, <span class='number'>72</span>, <span class='number'>65</span>, <span class='number'>105</span>, <span class='number'>79</span>, <span class='number'>106</span>, <span class='number'>69</span>, <span class='number'>122</span>, <span class='number'>77</span>, <span class='number'>68</span>, <span class='number'>65</span>, <span class='number'>52</span>, <span class='number'>77</span>, <span class='number'>84</span>, <span class='number'>107</span>,
             <span class='number'>122</span>, <span class='number'>79</span>, <span class='number'>68</span>, <span class='number'>65</span>, <span class='number'>115</span>, <span class='number'>68</span>, <span class='number'>81</span>, <span class='number'>111</span>, <span class='number'>103</span>, <span class='number'>73</span>, <span class='number'>109</span>, <span class='number'>104</span>, <span class='number'>48</span>, <span class='number'>100</span>, <span class='number'>72</span>, <span class='number'>65</span>, <span class='number'>54</span>, <span class='number'>76</span>, <span class='number'>121</span>,
             <span class='number'>57</span>, <span class='number'>108</span>, <span class='number'>101</span>, <span class='number'>71</span>, <span class='number'>70</span>, <span class='number'>116</span>, <span class='number'>99</span>, <span class='number'>71</span>, <span class='number'>120</span>, <span class='number'>108</span>, <span class='number'>76</span>, <span class='number'>109</span>, <span class='number'>78</span>, <span class='number'>118</span>, <span class='number'>98</span>, <span class='number'>83</span>, <span class='number'>57</span>, <span class='number'>112</span>, <span class='number'>99</span>,
             <span class='number'>49</span>, <span class='number'>57</span>, <span class='number'>121</span>, <span class='number'>98</span>, <span class='number'>50</span>, <span class='number'>57</span>, <span class='number'>48</span>, <span class='number'>73</span>, <span class='number'>106</span>, <span class='number'>112</span>, <span class='number'>48</span>, <span class='number'>99</span>, <span class='number'>110</span>, <span class='number'>86</span>, <span class='number'>108</span>, <span class='number'>102</span>, <span class='number'>81</span>]
    }

    <span class='kw'>fn</span> <span class='ident'>signature_rs256</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='macro'>vec</span><span class='macro'>!</span>[<span class='number'>112</span>, <span class='number'>46</span>, <span class='number'>33</span>, <span class='number'>137</span>, <span class='number'>67</span>, <span class='number'>232</span>, <span class='number'>143</span>, <span class='number'>209</span>, <span class='number'>30</span>, <span class='number'>181</span>, <span class='number'>216</span>, <span class='number'>45</span>, <span class='number'>191</span>, <span class='number'>120</span>, <span class='number'>69</span>, <span class='number'>243</span>, <span class='number'>65</span>, <span class='number'>6</span>, <span class='number'>174</span>,
             <span class='number'>27</span>, <span class='number'>129</span>, <span class='number'>255</span>, <span class='number'>247</span>, <span class='number'>115</span>, <span class='number'>17</span>, <span class='number'>22</span>, <span class='number'>173</span>, <span class='number'>209</span>, <span class='number'>113</span>, <span class='number'>125</span>, <span class='number'>131</span>, <span class='number'>101</span>, <span class='number'>109</span>, <span class='number'>66</span>, <span class='number'>10</span>, <span class='number'>253</span>, <span class='number'>60</span>,
             <span class='number'>150</span>, <span class='number'>238</span>, <span class='number'>221</span>, <span class='number'>115</span>, <span class='number'>162</span>, <span class='number'>102</span>, <span class='number'>62</span>, <span class='number'>81</span>, <span class='number'>102</span>, <span class='number'>104</span>, <span class='number'>123</span>, <span class='number'>0</span>, <span class='number'>11</span>, <span class='number'>135</span>, <span class='number'>34</span>, <span class='number'>110</span>, <span class='number'>1</span>, <span class='number'>135</span>, <span class='number'>237</span>,
             <span class='number'>16</span>, <span class='number'>115</span>, <span class='number'>249</span>, <span class='number'>69</span>, <span class='number'>229</span>, <span class='number'>130</span>, <span class='number'>173</span>, <span class='number'>252</span>, <span class='number'>239</span>, <span class='number'>22</span>, <span class='number'>216</span>, <span class='number'>90</span>, <span class='number'>121</span>, <span class='number'>142</span>, <span class='number'>232</span>, <span class='number'>198</span>, <span class='number'>109</span>, <span class='number'>219</span>,
             <span class='number'>61</span>, <span class='number'>184</span>, <span class='number'>151</span>, <span class='number'>91</span>, <span class='number'>23</span>, <span class='number'>208</span>, <span class='number'>148</span>, <span class='number'>2</span>, <span class='number'>190</span>, <span class='number'>237</span>, <span class='number'>213</span>, <span class='number'>217</span>, <span class='number'>217</span>, <span class='number'>112</span>, <span class='number'>7</span>, <span class='number'>16</span>, <span class='number'>141</span>, <span class='number'>178</span>, <span class='number'>129</span>,
             <span class='number'>96</span>, <span class='number'>213</span>, <span class='number'>248</span>, <span class='number'>4</span>, <span class='number'>12</span>, <span class='number'>167</span>, <span class='number'>68</span>, <span class='number'>87</span>, <span class='number'>98</span>, <span class='number'>184</span>, <span class='number'>31</span>, <span class='number'>190</span>, <span class='number'>127</span>, <span class='number'>249</span>, <span class='number'>217</span>, <span class='number'>46</span>, <span class='number'>10</span>, <span class='number'>231</span>, <span class='number'>111</span>,
             <span class='number'>36</span>, <span class='number'>242</span>, <span class='number'>91</span>, <span class='number'>51</span>, <span class='number'>187</span>, <span class='number'>230</span>, <span class='number'>244</span>, <span class='number'>74</span>, <span class='number'>230</span>, <span class='number'>30</span>, <span class='number'>177</span>, <span class='number'>4</span>, <span class='number'>10</span>, <span class='number'>203</span>, <span class='number'>32</span>, <span class='number'>4</span>, <span class='number'>77</span>, <span class='number'>62</span>, <span class='number'>249</span>, <span class='number'>18</span>,
             <span class='number'>142</span>, <span class='number'>212</span>, <span class='number'>1</span>, <span class='number'>48</span>, <span class='number'>121</span>, <span class='number'>91</span>, <span class='number'>212</span>, <span class='number'>189</span>, <span class='number'>59</span>, <span class='number'>65</span>, <span class='number'>238</span>, <span class='number'>202</span>, <span class='number'>208</span>, <span class='number'>102</span>, <span class='number'>171</span>, <span class='number'>101</span>, <span class='number'>25</span>, <span class='number'>129</span>,
             <span class='number'>253</span>, <span class='number'>228</span>, <span class='number'>141</span>, <span class='number'>247</span>, <span class='number'>127</span>, <span class='number'>55</span>, <span class='number'>45</span>, <span class='number'>195</span>, <span class='number'>139</span>, <span class='number'>159</span>, <span class='number'>175</span>, <span class='number'>221</span>, <span class='number'>59</span>, <span class='number'>239</span>, <span class='number'>177</span>, <span class='number'>139</span>, <span class='number'>93</span>, <span class='number'>163</span>,
             <span class='number'>204</span>, <span class='number'>60</span>, <span class='number'>46</span>, <span class='number'>176</span>, <span class='number'>47</span>, <span class='number'>158</span>, <span class='number'>58</span>, <span class='number'>65</span>, <span class='number'>214</span>, <span class='number'>18</span>, <span class='number'>202</span>, <span class='number'>173</span>, <span class='number'>21</span>, <span class='number'>145</span>, <span class='number'>18</span>, <span class='number'>115</span>, <span class='number'>160</span>, <span class='number'>95</span>, <span class='number'>35</span>,
             <span class='number'>185</span>, <span class='number'>232</span>, <span class='number'>56</span>, <span class='number'>250</span>, <span class='number'>175</span>, <span class='number'>132</span>, <span class='number'>157</span>, <span class='number'>105</span>, <span class='number'>132</span>, <span class='number'>41</span>, <span class='number'>239</span>, <span class='number'>90</span>, <span class='number'>30</span>, <span class='number'>136</span>, <span class='number'>121</span>, <span class='number'>130</span>, <span class='number'>54</span>, <span class='number'>195</span>,
             <span class='number'>212</span>, <span class='number'>14</span>, <span class='number'>96</span>, <span class='number'>69</span>, <span class='number'>34</span>, <span class='number'>165</span>, <span class='number'>68</span>, <span class='number'>200</span>, <span class='number'>242</span>, <span class='number'>122</span>, <span class='number'>122</span>, <span class='number'>45</span>, <span class='number'>184</span>, <span class='number'>6</span>, <span class='number'>99</span>, <span class='number'>209</span>, <span class='number'>108</span>, <span class='number'>247</span>, <span class='number'>202</span>,
             <span class='number'>234</span>, <span class='number'>86</span>, <span class='number'>222</span>, <span class='number'>64</span>, <span class='number'>92</span>, <span class='number'>178</span>, <span class='number'>33</span>, <span class='number'>90</span>, <span class='number'>69</span>, <span class='number'>178</span>, <span class='number'>194</span>, <span class='number'>85</span>, <span class='number'>102</span>, <span class='number'>181</span>, <span class='number'>90</span>, <span class='number'>193</span>, <span class='number'>167</span>, <span class='number'>72</span>, <span class='number'>160</span>,
             <span class='number'>112</span>, <span class='number'>223</span>, <span class='number'>200</span>, <span class='number'>163</span>, <span class='number'>42</span>, <span class='number'>70</span>, <span class='number'>149</span>, <span class='number'>67</span>, <span class='number'>208</span>, <span class='number'>25</span>, <span class='number'>238</span>, <span class='number'>251</span>, <span class='number'>71</span>]
    }

    <span class='attribute'>#[<span class='ident'>test</span>]</span>
    <span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>test_sign</span>() {
        <span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>buffer</span> <span class='op'>=</span> <span class='ident'>File</span>::<span class='ident'>open</span>(<span class='string'>&quot;test/rsa.pem&quot;</span>).<span class='ident'>unwrap</span>();
        <span class='kw'>let</span> <span class='ident'>private_key</span> <span class='op'>=</span> <span class='ident'>RSA</span>::<span class='ident'>private_key_from_pem</span>(<span class='kw-2'>&amp;</span><span class='kw-2'>mut</span> <span class='ident'>buffer</span>).<span class='ident'>unwrap</span>();

        <span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>sha</span> <span class='op'>=</span> <span class='ident'>Hasher</span>::<span class='ident'>new</span>(<span class='ident'>Type</span>::<span class='ident'>SHA256</span>);
        <span class='ident'>sha</span>.<span class='ident'>write_all</span>(<span class='kw-2'>&amp;</span><span class='ident'>signing_input_rs256</span>()).<span class='ident'>unwrap</span>();
        <span class='kw'>let</span> <span class='ident'>digest</span> <span class='op'>=</span> <span class='ident'>sha</span>.<span class='ident'>finish</span>();

        <span class='kw'>let</span> <span class='ident'>result</span> <span class='op'>=</span> <span class='ident'>private_key</span>.<span class='ident'>sign</span>(<span class='ident'>Type</span>::<span class='ident'>SHA256</span>, <span class='kw-2'>&amp;</span><span class='ident'>digest</span>).<span class='ident'>unwrap</span>();

        <span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>result</span>, <span class='ident'>signature_rs256</span>());
    }

    <span class='attribute'>#[<span class='ident'>test</span>]</span>
    <span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>test_verify</span>() {
        <span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>buffer</span> <span class='op'>=</span> <span class='ident'>File</span>::<span class='ident'>open</span>(<span class='string'>&quot;test/rsa.pem.pub&quot;</span>).<span class='ident'>unwrap</span>();
        <span class='kw'>let</span> <span class='ident'>public_key</span> <span class='op'>=</span> <span class='ident'>RSA</span>::<span class='ident'>public_key_from_pem</span>(<span class='kw-2'>&amp;</span><span class='kw-2'>mut</span> <span class='ident'>buffer</span>).<span class='ident'>unwrap</span>();

        <span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>sha</span> <span class='op'>=</span> <span class='ident'>Hasher</span>::<span class='ident'>new</span>(<span class='ident'>Type</span>::<span class='ident'>SHA256</span>);
        <span class='ident'>sha</span>.<span class='ident'>write_all</span>(<span class='kw-2'>&amp;</span><span class='ident'>signing_input_rs256</span>()).<span class='ident'>unwrap</span>();
        <span class='kw'>let</span> <span class='ident'>digest</span> <span class='op'>=</span> <span class='ident'>sha</span>.<span class='ident'>finish</span>();

        <span class='kw'>let</span> <span class='ident'>result</span> <span class='op'>=</span> <span class='ident'>public_key</span>.<span class='ident'>verify</span>(<span class='ident'>Type</span>::<span class='ident'>SHA256</span>, <span class='kw-2'>&amp;</span><span class='ident'>digest</span>, <span class='kw-2'>&amp;</span><span class='ident'>signature_rs256</span>()).<span class='ident'>unwrap</span>();

        <span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>result</span>);
    }
}
</pre>
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