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<h1 class='fqn'><span class='in-band'>Function <a href='../index.html'>ring</a>::<wbr><a href='index.html'>aead</a>::<wbr><a class="fn" href=''>seal_in_place</a></span><span class='out-of-band'><span id='render-detail'>
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<pre class='rust fn'>pub fn seal_in_place(<br>&nbsp;&nbsp;&nbsp;&nbsp;key: &amp;<a class="struct" href="../../ring/aead/struct.SealingKey.html" title="struct ring::aead::SealingKey">SealingKey</a>, <br>&nbsp;&nbsp;&nbsp;&nbsp;nonce: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">&amp;[</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">]</a>, <br>&nbsp;&nbsp;&nbsp;&nbsp;ad: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">&amp;[</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">]</a>, <br>&nbsp;&nbsp;&nbsp;&nbsp;in_out: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">&amp;mut [</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">]</a>, <br>&nbsp;&nbsp;&nbsp;&nbsp;out_suffix_capacity: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a><br>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, <a class="struct" href="../../ring/error/struct.Unspecified.html" title="struct ring::error::Unspecified">Unspecified</a>&gt;</pre><div class='docblock'><p>Encrypts and signs (“seals”) data in place.</p>
<p><code>nonce</code> must be unique for every use of the key to seal data.</p>
<p>The input is <code>in_out[..(in_out.len() - out_suffix_capacity)]</code>; i.e. the
input is the part of <code>in_out</code> that precedes the suffix. When
<code>seal_in_place()</code> returns <code>Ok(out_len)</code>, the encrypted and signed output is
<code>in_out[..out_len]</code>; i.e. the output has been written over input and at
least part of the data reserved for the suffix. (The input/output buffer
is expressed this way because Rust&#39;s type system does not allow us to have
two slices, one mutable and one immutable, that reference overlapping
memory at the same time.)</p>
<p><code>out_suffix_capacity</code> must be at least <code>key.algorithm().tag_len()</code>. See
also <code>MAX_TAG_LEN</code>.</p>
<p><code>ad</code> is the additional authenticated data, if any.</p>
<p>C analog: <code>EVP_AEAD_CTX_seal</code>.</p>
<p>Go analog: <a href="https://golang.org/pkg/crypto/cipher/#AEAD"><code>AEAD.Seal</code></a></p>
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