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<title>aes - The Go Programming Language</title>
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<h1>Package aes</h1>
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<div id="short-nav"> <dl> <dd><code>import "crypto/aes"</code></dd> </dl> <dl> <dd><a href="index.html#pkg-overview" class="overviewLink">Overview</a></dd> <dd><a href="index.html#pkg-index" class="indexLink">Index</a></dd> </dl> </div> <!-- The package's Name is printed as title by the top-level template --> <div id="pkg-overview" class="toggleVisible"> <div class="collapsed"> <h2 class="toggleButton" title="Click to show Overview section">Overview ▹</h2> </div> <div class="expanded"> <h2 class="toggleButton" title="Click to hide Overview section">Overview ▾</h2> <p> Package aes implements AES encryption (formerly Rijndael), as defined in U.S. Federal Information Processing Standards Publication 197. </p>
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<!-- Table of contents for API; must be named manual-nav to turn off auto nav. --> <div id="manual-nav"> <dl> <dd><a href="index.html#pkg-constants">Constants</a></dd> <dd><a href="index.html#NewCipher">func NewCipher(key []byte) (cipher.Block, error)</a></dd> <dd><a href="index.html#KeySizeError">type KeySizeError</a></dd> <dd> <a href="index.html#KeySizeError.Error">func (k KeySizeError) Error() string</a></dd> </dl> </div><!-- #manual-nav -->
<h4>Package files</h4> <p> <span style="font-size:90%"> <a href="http://localhost:6060/src/crypto/aes/aes_gcm.go">aes_gcm.go</a> <a href="http://localhost:6060/src/crypto/aes/block.go">block.go</a> <a href="http://localhost:6060/src/crypto/aes/cipher.go">cipher.go</a> <a href="http://localhost:6060/src/crypto/aes/cipher_asm.go">cipher_asm.go</a> <a href="http://localhost:6060/src/crypto/aes/const.go">const.go</a> </span> </p> </div><!-- .expanded --> </div><!-- #pkg-index -->
<div id="pkg-callgraph" class="toggle" style="display: none"> <div class="collapsed"> <h2 class="toggleButton" title="Click to show Internal Call Graph section">Internal call graph ▹</h2> </div> <!-- .expanded --> <div class="expanded"> <h2 class="toggleButton" title="Click to hide Internal Call Graph section">Internal call graph ▾</h2> <p> In the call graph viewer below, each node is a function belonging to this package and its children are the functions it calls—perhaps dynamically. </p> <p> The root nodes are the entry points of the package: functions that may be called from outside the package. There may be non-exported or anonymous functions among them if they are called dynamically from another package. </p> <p> Click a node to visit that function's source code. From there you can visit its callers by clicking its declaring <code>func</code> token. </p> <p> Functions may be omitted if they were determined to be unreachable in the particular programs or tests that were analyzed. </p> <!-- Zero means show all package entry points. --> <ul style="margin-left: 0.5in" id="callgraph-0" class="treeview"></ul> </div> </div> <!-- #pkg-callgraph -->
<h2 id="pkg-constants">Constants</h2> <pre>const <span id="BlockSize">BlockSize</span> = 16</pre> <p> The AES block size in bytes. </p>
<h2 id="NewCipher">func <a href="http://localhost:6060/src/crypto/aes/cipher.go?s=688:736#L21">NewCipher</a></h2> <pre>func NewCipher(key []<a href="../../builtin/index.html#byte">byte</a>) (<a href="../cipher/index.html">cipher</a>.<a href="../cipher/index.html#Block">Block</a>, <a href="../../builtin/index.html#error">error</a>)</pre> <p> NewCipher creates and returns a new cipher.Block. The key argument should be the AES key, either 16, 24, or 32 bytes to select AES-128, AES-192, or AES-256. </p>
<h2 id="KeySizeError">type <a href="http://localhost:6060/src/crypto/aes/cipher.go?s=391:412#L11">KeySizeError</a></h2> <pre>type KeySizeError <a href="../../builtin/index.html#int">int</a></pre>
<h3 id="KeySizeError.Error">func (KeySizeError) <a href="http://localhost:6060/src/crypto/aes/cipher.go?s=414:450#L13">Error</a></h3> <pre>func (k <a href="index.html#KeySizeError">KeySizeError</a>) Error() <a href="../../builtin/index.html#string">string</a></pre>
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