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<h1 class="fs-4">MagickCore, C API: Convert to and from Cipher Pixels</h1>
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</a>
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</header>
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<h1 class="text-center">Cipher</h1>
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</button>
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<ul class="dropdown-menu pre-scrollable" aria-labelledby="defaultDropdown">
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<li><a href="#AcquireAESInfo">AcquireAESInfo</a></li>
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<li><a href="#DestroyAESInfo">DestroyAESInfo</a></li>
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<li><a href="#EncipherAESBlock">EncipherAESBlock</a></li>
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<li><a href="#PasskeyDecipherImage">PasskeyDecipherImage</a></li>
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<li><a href="#PasskeyEncipherImage">PasskeyEncipherImage</a></li>
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<li><a href="#SetAESKey">SetAESKey</a></li>
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<li><a href="#PasskeyDecipherImage">PasskeyDecipherImage</a></li>
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<br/>
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<br/>
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<div class="magick-header">
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<h2><a href="../../api/MagickCore/cipher_8c.html" id="AcquireAESInfo">AcquireAESInfo</a></h2>
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<p>AcquireAESInfo() allocate the AESInfo structure.</p>
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<p>The format of the AcquireAESInfo method is:</p>
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<pre class="bg-light text-dark mx-4"><samp>AESInfo *AcquireAESInfo(void)
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</samp></pre>
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<h2><a href="../../api/MagickCore/cipher_8c.html" id="DestroyAESInfo">DestroyAESInfo</a></h2>
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<p>DestroyAESInfo() zeros memory associated with the AESInfo structure.</p>
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<p>The format of the DestroyAESInfo method is:</p>
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<pre class="bg-light text-dark mx-4"><samp>AESInfo *DestroyAESInfo(AESInfo *aes_info)
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</samp></pre>
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<p>A description of each parameter follows:</p>
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<dd>
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</dd>
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<dd> </dd>
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<dl class="dl-horizontal">
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<dt>aes_info</dt>
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<dd>the cipher context. </dd>
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<dd> </dd>
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</dl>
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<h2><a href="../../api/MagickCore/cipher_8c.html" id="EncipherAESBlock">EncipherAESBlock</a></h2>
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<p>EncipherAESBlock() enciphers a single block of plaintext to produce a block of ciphertext.</p>
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<p>The format of the EncipherAESBlock method is:</p>
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<pre class="bg-light text-dark mx-4"><samp>void EncipherAES(AESInfo *aes_info,const unsigned char *plaintext,
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unsigned char *ciphertext)
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</samp></pre>
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<p>A description of each parameter follows:</p>
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<dd>
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</dd>
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<dd> </dd>
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<dl class="dl-horizontal">
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<dt>aes_info</dt>
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<dd>the cipher context. </dd>
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<dd> </dd>
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<dt>plaintext</dt>
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<dd>the plain text. </dd>
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<dd> </dd>
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<dt>ciphertext</dt>
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<dd>the cipher text. </dd>
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<dd> </dd>
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</dl>
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<h2><a href="../../api/MagickCore/cipher_8c.html" id="PasskeyDecipherImage">PasskeyDecipherImage</a></h2>
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<p>PasskeyDecipherImage() converts cipher pixels to plain pixels.</p>
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<p>The format of the PasskeyDecipherImage method is:</p>
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<pre class="bg-light text-dark mx-4"><samp>MagickBooleanType PasskeyDecipherImage(Image *image,
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const StringInfo *passkey,ExceptionInfo *exception)
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MagickBooleanType DecipherImage(Image *image,const char *passphrase,
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ExceptionInfo *exception)
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</samp></pre>
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<p>A description of each parameter follows:</p>
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<dd>
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</dd>
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<dd> </dd>
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<dl class="dl-horizontal">
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<dt>image</dt>
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<dd>the image. </dd>
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|||
|
|
<dd> </dd>
|
|||
|
|
<dt>passphrase</dt>
|
|||
|
|
<dd>decipher cipher pixels with this passphrase. </dd>
|
|||
|
|
|
|||
|
|
<dd> </dd>
|
|||
|
|
<dt>passkey</dt>
|
|||
|
|
<dd>decrypt cipher pixels with this passkey. </dd>
|
|||
|
|
|
|||
|
|
<dd> </dd>
|
|||
|
|
<dt>exception</dt>
|
|||
|
|
<dd>return any errors or warnings in this structure. </dd>
|
|||
|
|
|
|||
|
|
<dd> </dd>
|
|||
|
|
</dl>
|
|||
|
|
<h2><a href="../../api/MagickCore/cipher_8c.html" id="PasskeyEncipherImage">PasskeyEncipherImage</a></h2>
|
|||
|
|
|
|||
|
|
<p>PasskeyEncipherImage() converts pixels to cipher-pixels.</p>
|
|||
|
|
|
|||
|
|
<p>The format of the PasskeyEncipherImage method is:</p>
|
|||
|
|
|
|||
|
|
<pre class="bg-light text-dark mx-4"><samp>MagickBooleanType PasskeyEncipherImage(Image *image,
|
|||
|
|
const StringInfo *passkey,ExceptionInfo *exception)
|
|||
|
|
MagickBooleanType EncipherImage(Image *image,const char *passphrase,
|
|||
|
|
ExceptionInfo *exception)
|
|||
|
|
</samp></pre>
|
|||
|
|
|
|||
|
|
<p>A description of each parameter follows:</p>
|
|||
|
|
|
|||
|
|
<dd>
|
|||
|
|
</dd>
|
|||
|
|
|
|||
|
|
<dd> </dd>
|
|||
|
|
<dl class="dl-horizontal">
|
|||
|
|
<dt>image</dt>
|
|||
|
|
<dd>the image. </dd>
|
|||
|
|
|
|||
|
|
<dd> </dd>
|
|||
|
|
<dt>passphrase</dt>
|
|||
|
|
<dd>encipher pixels with this passphrase. </dd>
|
|||
|
|
|
|||
|
|
<dd> </dd>
|
|||
|
|
<dt>passkey</dt>
|
|||
|
|
<dd>decrypt cipher pixels with this passkey. </dd>
|
|||
|
|
|
|||
|
|
<dd> </dd>
|
|||
|
|
<dt>exception</dt>
|
|||
|
|
<dd>return any errors or warnings in this structure. </dd>
|
|||
|
|
|
|||
|
|
<dd> </dd>
|
|||
|
|
</dl>
|
|||
|
|
<h2><a href="../../api/MagickCore/cipher_8c.html" id="SetAESKey">SetAESKey</a></h2>
|
|||
|
|
|
|||
|
|
<p>SetAESKey() sets the key for the AES cipher. The key length is specified in bits. Valid values are 128, 192, or 256 requiring a key buffer length in bytes of 16, 24, and 32 respectively.</p>
|
|||
|
|
|
|||
|
|
<p>The format of the SetAESKey method is:</p>
|
|||
|
|
|
|||
|
|
<pre class="bg-light text-dark mx-4"><samp>SetAESKey(AESInfo *aes_info,const StringInfo *key)
|
|||
|
|
</samp></pre>
|
|||
|
|
|
|||
|
|
<p>A description of each parameter follows:</p>
|
|||
|
|
|
|||
|
|
<dd>
|
|||
|
|
</dd>
|
|||
|
|
|
|||
|
|
<dd> </dd>
|
|||
|
|
<dl class="dl-horizontal">
|
|||
|
|
<dt>aes_info</dt>
|
|||
|
|
<dd>the cipher context. </dd>
|
|||
|
|
|
|||
|
|
<dd> </dd>
|
|||
|
|
<dt>key</dt>
|
|||
|
|
<dd>the key. </dd>
|
|||
|
|
|
|||
|
|
<dd> </dd>
|
|||
|
|
</dl>
|
|||
|
|
<h2><a href="../../api/MagickCore/cipher_8c.html" id="PasskeyDecipherImage">PasskeyDecipherImage</a></h2>
|
|||
|
|
|
|||
|
|
<p>PasskeyDecipherImage() converts cipher pixels to plain pixels.</p>
|
|||
|
|
|
|||
|
|
<p>The format of the PasskeyDecipherImage method is:</p>
|
|||
|
|
|
|||
|
|
<pre class="bg-light text-dark mx-4"><samp>MagickBooleanType PasskeyDecipherImage(Image *image,
|
|||
|
|
const StringInfo *passkey,ExceptionInfo *exception)
|
|||
|
|
MagickBooleanType DecipherImage(Image *image,const char *passphrase,
|
|||
|
|
ExceptionInfo *exception)
|
|||
|
|
</samp></pre>
|
|||
|
|
|
|||
|
|
<p>A description of each parameter follows:</p>
|
|||
|
|
|
|||
|
|
<dd>
|
|||
|
|
</dd>
|
|||
|
|
|
|||
|
|
<dd> </dd>
|
|||
|
|
<dl class="dl-horizontal">
|
|||
|
|
<dt>image</dt>
|
|||
|
|
<dd>the image. </dd>
|
|||
|
|
|
|||
|
|
<dd> </dd>
|
|||
|
|
<dt>passphrase</dt>
|
|||
|
|
<dd>decipher cipher pixels with this passphrase. </dd>
|
|||
|
|
|
|||
|
|
<dd> </dd>
|
|||
|
|
<dt>passkey</dt>
|
|||
|
|
<dd>decrypt cipher pixels with this passkey. </dd>
|
|||
|
|
|
|||
|
|
<dd> </dd>
|
|||
|
|
<dt>exception</dt>
|
|||
|
|
<dd>return any errors or warnings in this structure. </dd>
|
|||
|
|
|
|||
|
|
<dd> </dd>
|
|||
|
|
</dl>
|
|||
|
|
<h2><a href="../../api/MagickCore/cipher_8c.html" id="PasskeyEncipherImage">PasskeyEncipherImage</a></h2>
|
|||
|
|
|
|||
|
|
<p>PasskeyEncipherImage() converts pixels to cipher-pixels.</p>
|
|||
|
|
|
|||
|
|
<p>The format of the PasskeyEncipherImage method is:</p>
|
|||
|
|
|
|||
|
|
<pre class="bg-light text-dark mx-4"><samp>MagickBooleanType PasskeyEncipherImage(Image *image,
|
|||
|
|
const StringInfo *passkey,ExceptionInfo *exception)
|
|||
|
|
MagickBooleanType EncipherImage(Image *image,const char *passphrase,
|
|||
|
|
ExceptionInfo *exception)
|
|||
|
|
</samp></pre>
|
|||
|
|
|
|||
|
|
<p>A description of each parameter follows:</p>
|
|||
|
|
|
|||
|
|
<dd>
|
|||
|
|
</dd>
|
|||
|
|
|
|||
|
|
<dd> </dd>
|
|||
|
|
<dl class="dl-horizontal">
|
|||
|
|
<dt>passphrase</dt>
|
|||
|
|
<dd>decipher cipher pixels with this passphrase. </dd>
|
|||
|
|
|
|||
|
|
<dd> </dd>
|
|||
|
|
<dt>passkey</dt>
|
|||
|
|
<dd>decrypt cipher pixels with this passkey. </dd>
|
|||
|
|
|
|||
|
|
<dd> </dd>
|
|||
|
|
<dt>exception</dt>
|
|||
|
|
<dd>return any errors or warnings in this structure. </dd>
|
|||
|
|
|
|||
|
|
<dd> </dd>
|
|||
|
|
</dl>
|
|||
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