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<div id="projectbrief">Aaru Data Preservation Suite - Format Library</div>
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<div class="headertitle"><div class="title">wiiu_crypto.h File Reference</div></div>
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<div class="textblock"><code>#include &lt;stdbool.h&gt;</code><br />
<code>#include &lt;stdint.h&gt;</code><br />
</div>
<p><a href="wiiu__crypto_8h_source.html">Go to the source code of this file.</a></p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 id="header-nested-classes" class="groupheader"><a id="nested-classes" name="nested-classes"></a>
Data Structures</h2></td></tr>
<tr class="memitem:WiiuPartitionRegion" id="r_WiiuPartitionRegion"><td class="memItemLeft">struct &#160;</td><td class="memItemRight"><a class="el" href="structWiiuPartitionRegion.html">WiiuPartitionRegion</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft">&#160;</td><td class="mdescRight">A Wii U partition region entry (in-memory representation). <a href="structWiiuPartitionRegion.html#details">More...</a><br /></td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 id="header-define-members" class="groupheader"><a id="define-members" name="define-members"></a>
Macros</h2></td></tr>
<tr class="memitem:a1445016762d8e7fe5a0220e3cdded2d3" id="r_a1445016762d8e7fe5a0220e3cdded2d3"><td class="memItemLeft">#define&#160;</td><td class="memItemRight"><a class="el" href="#a1445016762d8e7fe5a0220e3cdded2d3">WIIU_CRYPTO_SECTOR_SIZE</a>&#160;&#160;&#160;0x8000</td></tr>
<tr class="memdesc:a1445016762d8e7fe5a0220e3cdded2d3"><td class="mdescLeft">&#160;</td><td class="mdescRight">Wii U physical sector size (32 KiB). <br /></td></tr>
<tr class="memitem:ae5a3916c486e8afd292c8ea9bebef9fd" id="r_ae5a3916c486e8afd292c8ea9bebef9fd"><td class="memItemLeft">#define&#160;</td><td class="memItemRight"><a class="el" href="#ae5a3916c486e8afd292c8ea9bebef9fd">WIIU_LOGICAL_PER_PHYSICAL</a>&#160;&#160;&#160;16</td></tr>
<tr class="memdesc:ae5a3916c486e8afd292c8ea9bebef9fd"><td class="mdescLeft">&#160;</td><td class="mdescRight">Number of 2048-byte logical sectors per physical sector. <br /></td></tr>
<tr class="memitem:a3a88817f94211137ebdaa908f6196ecd" id="r_a3a88817f94211137ebdaa908f6196ecd"><td class="memItemLeft">#define&#160;</td><td class="memItemRight"><a class="el" href="#a3a88817f94211137ebdaa908f6196ecd">WIIU_HEADER_PHYSICAL_SECTORS</a>&#160;&#160;&#160;3</td></tr>
<tr class="memdesc:a3a88817f94211137ebdaa908f6196ecd"><td class="mdescLeft">&#160;</td><td class="mdescRight">Disc header occupies physical sectors 0-2 (plaintext). <br /></td></tr>
<tr class="memitem:ae77e5265ba4f2fad10f02f7ee2b614a6" id="r_ae77e5265ba4f2fad10f02f7ee2b614a6"><td class="memItemLeft">#define&#160;</td><td class="memItemRight"><a class="el" href="#ae77e5265ba4f2fad10f02f7ee2b614a6">WIIU_MAX_PARTITIONS</a>&#160;&#160;&#160;8</td></tr>
<tr class="memdesc:ae77e5265ba4f2fad10f02f7ee2b614a6"><td class="mdescLeft">&#160;</td><td class="mdescRight">Maximum number of partitions supported. <br /></td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 id="header-typedef-members" class="groupheader"><a id="typedef-members" name="typedef-members"></a>
Typedefs</h2></td></tr>
<tr class="memitem:a4b3dd1292486617335067a7a2901017b" id="r_a4b3dd1292486617335067a7a2901017b"><td class="memItemLeft">typedef struct WiiuPartitionRegion&#160;</td><td class="memItemRight"><a class="el" href="#a4b3dd1292486617335067a7a2901017b">WiiuPartitionRegion</a></td></tr>
<tr class="memdesc:a4b3dd1292486617335067a7a2901017b"><td class="mdescLeft">&#160;</td><td class="mdescRight">A Wii U partition region entry (in-memory representation). <br /></td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 id="header-func-members" class="groupheader"><a id="func-members" name="func-members"></a>
Functions</h2></td></tr>
<tr class="memitem:ad545b76f7c59ef6f446fb1eb0dffae51" id="r_ad545b76f7c59ef6f446fb1eb0dffae51"><td class="memItemLeft">const uint8_t *&#160;</td><td class="memItemRight"><a class="el" href="#ad545b76f7c59ef6f446fb1eb0dffae51">wiiu_get_sector_key</a> (const <a class="el" href="structWiiuPartitionRegion.html">WiiuPartitionRegion</a> *regions, uint32_t region_count, uint64_t logical_sector)</td></tr>
<tr class="memdesc:ad545b76f7c59ef6f446fb1eb0dffae51"><td class="mdescLeft">&#160;</td><td class="mdescRight">Get the encryption key for a given logical sector (2048-byte). <br /></td></tr>
<tr class="memitem:af0811dc6f276a4f6accae2b62e5d462c" id="r_af0811dc6f276a4f6accae2b62e5d462c"><td class="memItemLeft">bool&#160;</td><td class="memItemRight"><a class="el" href="#af0811dc6f276a4f6accae2b62e5d462c">wiiu_is_sector_encrypted</a> (const <a class="el" href="structWiiuPartitionRegion.html">WiiuPartitionRegion</a> *regions, uint32_t region_count, uint64_t logical_sector)</td></tr>
<tr class="memdesc:af0811dc6f276a4f6accae2b62e5d462c"><td class="mdescLeft">&#160;</td><td class="mdescRight">Check if a logical sector (2048-byte) is in an encrypted region. <br /></td></tr>
<tr class="memitem:a50434d7209fe488e67c983d276bd002c" id="r_a50434d7209fe488e67c983d276bd002c"><td class="memItemLeft">void&#160;</td><td class="memItemRight"><a class="el" href="#a50434d7209fe488e67c983d276bd002c">wiiu_encrypt_physical_sector</a> (const uint8_t key[16], uint8_t *data, uint32_t length)</td></tr>
<tr class="memdesc:a50434d7209fe488e67c983d276bd002c"><td class="mdescLeft">&#160;</td><td class="mdescRight">Encrypt a full 0x8000-byte physical sector in-place. <br /></td></tr>
<tr class="memitem:a8ce6ebfefba6603f42b675ff66111a60" id="r_a8ce6ebfefba6603f42b675ff66111a60"><td class="memItemLeft">void&#160;</td><td class="memItemRight"><a class="el" href="#a8ce6ebfefba6603f42b675ff66111a60">wiiu_decrypt_physical_sector</a> (const uint8_t key[16], uint8_t *data, uint32_t length)</td></tr>
<tr class="memdesc:a8ce6ebfefba6603f42b675ff66111a60"><td class="mdescLeft">&#160;</td><td class="mdescRight">Decrypt a full 0x8000-byte physical sector in-place. <br /></td></tr>
<tr class="memitem:ab41b22d7e44eea39171cb2fcf07b3f7e" id="r_ab41b22d7e44eea39171cb2fcf07b3f7e"><td class="memItemLeft">int32_t&#160;</td><td class="memItemRight"><a class="el" href="#ab41b22d7e44eea39171cb2fcf07b3f7e">wiiu_serialize_partition_key_map</a> (const <a class="el" href="structWiiuPartitionRegion.html">WiiuPartitionRegion</a> *regions, uint32_t count, uint8_t **out_data, uint32_t *out_len)</td></tr>
<tr class="memdesc:ab41b22d7e44eea39171cb2fcf07b3f7e"><td class="mdescLeft">&#160;</td><td class="mdescRight">Serialize a partition key map for storage as a media tag. <br /></td></tr>
<tr class="memitem:a56ef715248dfeaef2a1d78400449c27b" id="r_a56ef715248dfeaef2a1d78400449c27b"><td class="memItemLeft">int32_t&#160;</td><td class="memItemRight"><a class="el" href="#a56ef715248dfeaef2a1d78400449c27b">wiiu_deserialize_partition_key_map</a> (const uint8_t *data, uint32_t data_len, <a class="el" href="structWiiuPartitionRegion.html">WiiuPartitionRegion</a> **regions, uint32_t *count)</td></tr>
<tr class="memdesc:a56ef715248dfeaef2a1d78400449c27b"><td class="mdescLeft">&#160;</td><td class="mdescRight">Deserialize a partition key map from a media tag buffer. <br /></td></tr>
<tr class="memitem:a791f63da879f72714851b7c7fb707b77" id="r_a791f63da879f72714851b7c7fb707b77"><td class="memItemLeft">void&#160;</td><td class="memItemRight"><a class="el" href="#a791f63da879f72714851b7c7fb707b77">wiiu_lazy_init</a> (<a class="el" href="structaaruformat__context.html">aaruformat_context</a> *ctx)</td></tr>
<tr class="memdesc:a791f63da879f72714851b7c7fb707b77"><td class="mdescLeft">&#160;</td><td class="mdescRight">Lazy initialization: load disc key and partition key map from media tags. <br /></td></tr>
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<a name="doc-define-members" id="doc-define-members"></a><h2 id="header-doc-define-members" class="groupheader">Macro Definition Documentation</h2>
<a id="a1445016762d8e7fe5a0220e3cdded2d3" name="a1445016762d8e7fe5a0220e3cdded2d3"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a1445016762d8e7fe5a0220e3cdded2d3">&#9670;&#160;</a></span>WIIU_CRYPTO_SECTOR_SIZE</h2>
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<td class="memname">#define WIIU_CRYPTO_SECTOR_SIZE&#160;&#160;&#160;0x8000</td>
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<p>Wii U physical sector size (32 KiB). </p>
<p class="definition">Definition at line <a class="el" href="wiiu__crypto_8h_source.html#l00035">35</a> of file <a class="el" href="wiiu__crypto_8h_source.html">wiiu_crypto.h</a>.</p>
<p class="reference">Referenced by <a class="el" href="read_8c_source.html#l00352">aaruf_read_sector()</a>, and <a class="el" href="wiiu__crypto_8c_source.html#l00155">wiiu_lazy_init()</a>.</p>
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<a id="a3a88817f94211137ebdaa908f6196ecd" name="a3a88817f94211137ebdaa908f6196ecd"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a3a88817f94211137ebdaa908f6196ecd">&#9670;&#160;</a></span>WIIU_HEADER_PHYSICAL_SECTORS</h2>
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<td class="memname">#define WIIU_HEADER_PHYSICAL_SECTORS&#160;&#160;&#160;3</td>
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<p>Disc header occupies physical sectors 0-2 (plaintext). </p>
<p class="definition">Definition at line <a class="el" href="wiiu__crypto_8h_source.html#l00037">37</a> of file <a class="el" href="wiiu__crypto_8h_source.html">wiiu_crypto.h</a>.</p>
<p class="reference">Referenced by <a class="el" href="wiiu__crypto_8c_source.html#l00043">wiiu_get_sector_key()</a>.</p>
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<a id="ae5a3916c486e8afd292c8ea9bebef9fd" name="ae5a3916c486e8afd292c8ea9bebef9fd"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ae5a3916c486e8afd292c8ea9bebef9fd">&#9670;&#160;</a></span>WIIU_LOGICAL_PER_PHYSICAL</h2>
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<td class="memname">#define WIIU_LOGICAL_PER_PHYSICAL&#160;&#160;&#160;16</td>
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<p>Number of 2048-byte logical sectors per physical sector. </p>
<p class="definition">Definition at line <a class="el" href="wiiu__crypto_8h_source.html#l00036">36</a> of file <a class="el" href="wiiu__crypto_8h_source.html">wiiu_crypto.h</a>.</p>
<p class="reference">Referenced by <a class="el" href="read_8c_source.html#l00352">aaruf_read_sector()</a>, and <a class="el" href="wiiu__crypto_8c_source.html#l00043">wiiu_get_sector_key()</a>.</p>
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<a id="ae77e5265ba4f2fad10f02f7ee2b614a6" name="ae77e5265ba4f2fad10f02f7ee2b614a6"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ae77e5265ba4f2fad10f02f7ee2b614a6">&#9670;&#160;</a></span>WIIU_MAX_PARTITIONS</h2>
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<td class="memname">#define WIIU_MAX_PARTITIONS&#160;&#160;&#160;8</td>
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<p>Maximum number of partitions supported. </p>
<p class="definition">Definition at line <a class="el" href="wiiu__crypto_8h_source.html#l00038">38</a> of file <a class="el" href="wiiu__crypto_8h_source.html">wiiu_crypto.h</a>.</p>
<p class="reference">Referenced by <a class="el" href="wiiu__crypto_8c_source.html#l00112">wiiu_deserialize_partition_key_map()</a>, and <a class="el" href="wiiu__crypto_8c_source.html#l00086">wiiu_serialize_partition_key_map()</a>.</p>
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<a name="doc-typedef-members" id="doc-typedef-members"></a><h2 id="header-doc-typedef-members" class="groupheader">Typedef Documentation</h2>
<a id="a4b3dd1292486617335067a7a2901017b" name="a4b3dd1292486617335067a7a2901017b"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a4b3dd1292486617335067a7a2901017b">&#9670;&#160;</a></span>WiiuPartitionRegion</h2>
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<td class="memname">typedef struct WiiuPartitionRegion WiiuPartitionRegion</td>
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<p>A Wii U partition region entry (in-memory representation). </p>
<p>Stores the physical sector range and AES-128 key for one partition. Physical sector numbers are in 0x8000-byte units (matching disc TOC). By convention, the partition's start_sector is a plaintext header; sectors [start_sector+1, end_sector) are encrypted with key. </p>
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<a name="doc-func-members" id="doc-func-members"></a><h2 id="header-doc-func-members" class="groupheader">Function Documentation</h2>
<a id="a8ce6ebfefba6603f42b675ff66111a60" name="a8ce6ebfefba6603f42b675ff66111a60"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a8ce6ebfefba6603f42b675ff66111a60">&#9670;&#160;</a></span>wiiu_decrypt_physical_sector()</h2>
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<td class="memname">void wiiu_decrypt_physical_sector </td>
<td>(</td>
<td class="paramtype">const uint8_t</td> <td class="paramname"><span class="paramname"><em>key</em></span>[16], </td>
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<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">uint8_t *</td> <td class="paramname"><span class="paramname"><em>data</em></span>, </td>
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<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">uint32_t</td> <td class="paramname"><span class="paramname"><em>length</em></span>&#160;)</td>
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</table>
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<p>Decrypt a full 0x8000-byte physical sector in-place. </p>
<p>Uses AES-128-CBC with IV=0 (Wii U scheme).</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">key</td><td>16-byte AES-128 key. </td></tr>
<tr><td class="paramname">data</td><td>Buffer to decrypt in-place (must be 0x8000 bytes). </td></tr>
<tr><td class="paramname">length</td><td>Number of bytes (must be 0x8000). </td></tr>
</table>
</dd>
</dl>
<p class="definition">Definition at line <a class="el" href="wiiu__crypto_8c_source.html#l00079">79</a> of file <a class="el" href="wiiu__crypto_8c_source.html">wiiu_crypto.c</a>.</p>
<p class="reference">References <a class="el" href="aes128_8c_source.html#l00290">aes128_cbc_decrypt()</a>.</p>
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<a id="a56ef715248dfeaef2a1d78400449c27b" name="a56ef715248dfeaef2a1d78400449c27b"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a56ef715248dfeaef2a1d78400449c27b">&#9670;&#160;</a></span>wiiu_deserialize_partition_key_map()</h2>
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<td class="memname">int32_t wiiu_deserialize_partition_key_map </td>
<td>(</td>
<td class="paramtype">const uint8_t *</td> <td class="paramname"><span class="paramname"><em>data</em></span>, </td>
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<td class="paramkey"></td>
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<td class="paramtype">uint32_t</td> <td class="paramname"><span class="paramname"><em>data_len</em></span>, </td>
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<td class="paramtype"><a class="el" href="structWiiuPartitionRegion.html">WiiuPartitionRegion</a> **</td> <td class="paramname"><span class="paramname"><em>regions</em></span>, </td>
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<td class="paramkey"></td>
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<td class="paramtype">uint32_t *</td> <td class="paramname"><span class="paramname"><em>count</em></span>&#160;)</td>
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<p>Deserialize a partition key map from a media tag buffer. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">data</td><td>Serialized data buffer. </td></tr>
<tr><td class="paramname">data_len</td><td>Length of the data buffer. </td></tr>
<tr><td class="paramname">regions</td><td>Output: malloc'd array of <a class="el" href="structWiiuPartitionRegion.html" title="A Wii U partition region entry (in-memory representation).">WiiuPartitionRegion</a> (caller must free). </td></tr>
<tr><td class="paramname">count</td><td>Output: number of regions. </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>0 on success, negative error code on failure. </dd></dl>
<p>&lt; Maximum number of partitions supported.</p>
<p class="definition">Definition at line <a class="el" href="wiiu__crypto_8c_source.html#l00112">112</a> of file <a class="el" href="wiiu__crypto_8c_source.html">wiiu_crypto.c</a>.</p>
<p class="reference">References <a class="el" href="wiiu__crypto_8h_source.html#l00051">WiiuPartitionRegion::end_sector</a>, <a class="el" href="wiiu__crypto_8c_source.html#l00031">read_le32()</a>, <a class="el" href="wiiu__crypto_8h_source.html#l00050">WiiuPartitionRegion::start_sector</a>, and <a class="el" href="wiiu__crypto_8h_source.html#l00038">WIIU_MAX_PARTITIONS</a>.</p>
<p class="reference">Referenced by <a class="el" href="wiiu__crypto_8c_source.html#l00155">wiiu_lazy_init()</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a50434d7209fe488e67c983d276bd002c">&#9670;&#160;</a></span>wiiu_encrypt_physical_sector()</h2>
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<td class="memname">void wiiu_encrypt_physical_sector </td>
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<td class="paramtype">const uint8_t</td> <td class="paramname"><span class="paramname"><em>key</em></span>[16], </td>
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<td class="paramtype">uint8_t *</td> <td class="paramname"><span class="paramname"><em>data</em></span>, </td>
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<td class="paramtype">uint32_t</td> <td class="paramname"><span class="paramname"><em>length</em></span>&#160;)</td>
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<p>Encrypt a full 0x8000-byte physical sector in-place. </p>
<p>Uses AES-128-CBC with IV=0 (Wii U scheme).</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">key</td><td>16-byte AES-128 key. </td></tr>
<tr><td class="paramname">data</td><td>Buffer to encrypt in-place (must be 0x8000 bytes). </td></tr>
<tr><td class="paramname">length</td><td>Number of bytes (must be 0x8000). </td></tr>
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<p class="definition">Definition at line <a class="el" href="wiiu__crypto_8c_source.html#l00072">72</a> of file <a class="el" href="wiiu__crypto_8c_source.html">wiiu_crypto.c</a>.</p>
<p class="reference">References <a class="el" href="aes128_8c_source.html#l00274">aes128_cbc_encrypt()</a>.</p>
<p class="reference">Referenced by <a class="el" href="read_8c_source.html#l00352">aaruf_read_sector()</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#ad545b76f7c59ef6f446fb1eb0dffae51">&#9670;&#160;</a></span>wiiu_get_sector_key()</h2>
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<td class="memname">const uint8_t * wiiu_get_sector_key </td>
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<td class="paramtype">const <a class="el" href="structWiiuPartitionRegion.html">WiiuPartitionRegion</a> *</td> <td class="paramname"><span class="paramname"><em>regions</em></span>, </td>
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<td class="paramtype">uint64_t</td> <td class="paramname"><span class="paramname"><em>logical_sector</em></span>&#160;)</td>
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<p>Get the encryption key for a given logical sector (2048-byte). </p>
<p>Converts the logical sector address to a physical sector address, then looks up which partition it belongs to and whether it is encrypted.</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">regions</td><td>Array of partition regions. </td></tr>
<tr><td class="paramname">region_count</td><td>Number of partition regions. </td></tr>
<tr><td class="paramname">logical_sector</td><td>Logical sector address (2048-byte units). </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>Pointer to the 16-byte key if the sector is encrypted, NULL if plaintext. </dd></dl>
<p>&lt; Number of 2048-byte logical sectors per physical sector.</p>
<p>&lt; Disc header occupies physical sectors 0-2 (plaintext).</p>
<p class="definition">Definition at line <a class="el" href="wiiu__crypto_8c_source.html#l00043">43</a> of file <a class="el" href="wiiu__crypto_8c_source.html">wiiu_crypto.c</a>.</p>
<p class="reference">References <a class="el" href="wiiu__crypto_8h_source.html#l00052">WiiuPartitionRegion::key</a>, <a class="el" href="wiiu__crypto_8h_source.html#l00037">WIIU_HEADER_PHYSICAL_SECTORS</a>, and <a class="el" href="wiiu__crypto_8h_source.html#l00036">WIIU_LOGICAL_PER_PHYSICAL</a>.</p>
<p class="reference">Referenced by <a class="el" href="read_8c_source.html#l00352">aaruf_read_sector()</a>, and <a class="el" href="wiiu__crypto_8c_source.html#l00069">wiiu_is_sector_encrypted()</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#af0811dc6f276a4f6accae2b62e5d462c">&#9670;&#160;</a></span>wiiu_is_sector_encrypted()</h2>
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<td class="memname">bool wiiu_is_sector_encrypted </td>
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<td class="paramtype">const <a class="el" href="structWiiuPartitionRegion.html">WiiuPartitionRegion</a> *</td> <td class="paramname"><span class="paramname"><em>regions</em></span>, </td>
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<td class="paramtype">uint32_t</td> <td class="paramname"><span class="paramname"><em>region_count</em></span>, </td>
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<td class="paramtype">uint64_t</td> <td class="paramname"><span class="paramname"><em>logical_sector</em></span>&#160;)</td>
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<p>Check if a logical sector (2048-byte) is in an encrypted region. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">regions</td><td>Array of partition regions. </td></tr>
<tr><td class="paramname">region_count</td><td>Number of partition regions. </td></tr>
<tr><td class="paramname">logical_sector</td><td>Logical sector address (2048-byte units). </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>true if the sector is encrypted, false if plaintext. </dd></dl>
<p class="definition">Definition at line <a class="el" href="wiiu__crypto_8c_source.html#l00069">69</a> of file <a class="el" href="wiiu__crypto_8c_source.html">wiiu_crypto.c</a>.</p>
<p class="reference">References <a class="el" href="wiiu__crypto_8c_source.html#l00043">wiiu_get_sector_key()</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a791f63da879f72714851b7c7fb707b77">&#9670;&#160;</a></span>wiiu_lazy_init()</h2>
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<td class="memname">void wiiu_lazy_init </td>
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<td class="paramtype"><a class="el" href="structaaruformat__context.html">aaruformat_context</a> *</td> <td class="paramname"><span class="paramname"><em>ctx</em></span></td><td>)</td>
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<p>Lazy initialization: load disc key and partition key map from media tags. </p>
<p>Populates ctx-&gt;wiiu_disc_key and ctx-&gt;wiiu_partition_regions from media tags. Allocates ctx-&gt;wiiu_encrypted_block_cache if needed.</p>
<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">ctx</td><td>AaruFormat context. </td></tr>
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</dd>
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<p>&lt; Wii U physical sector size (32 KiB).</p>
<p class="definition">Definition at line <a class="el" href="wiiu__crypto_8c_source.html#l00155">155</a> of file <a class="el" href="wiiu__crypto_8c_source.html">wiiu_crypto.c</a>.</p>
<p class="reference">References <a class="el" href="context_8h_source.html#l00123">mediaTagEntry::data</a>, <a class="el" href="aaru_8h_source.html#l01079">kMediaTagWiiUDiscKey</a>, <a class="el" href="aaru_8h_source.html#l01085">kMediaTagWiiUPartitionKeyMap</a>, <a class="el" href="context_8h_source.html#l00125">mediaTagEntry::length</a>, <a class="el" href="context_8h_source.html#l00267">aaruformat_context::mediaTags</a>, <a class="el" href="context_8h_source.html#l00360">aaruformat_context::wiiu_cache_valid</a>, <a class="el" href="wiiu__crypto_8h_source.html#l00035">WIIU_CRYPTO_SECTOR_SIZE</a>, <a class="el" href="wiiu__crypto_8c_source.html#l00112">wiiu_deserialize_partition_key_map()</a>, <a class="el" href="context_8h_source.html#l00354">aaruformat_context::wiiu_disc_key</a>, <a class="el" href="context_8h_source.html#l00358">aaruformat_context::wiiu_encrypted_block_cache</a>, <a class="el" href="context_8h_source.html#l00356">aaruformat_context::wiiu_partition_region_count</a>, and <a class="el" href="context_8h_source.html#l00355">aaruformat_context::wiiu_partition_regions</a>.</p>
<p class="reference">Referenced by <a class="el" href="read_8c_source.html#l00352">aaruf_read_sector()</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#ab41b22d7e44eea39171cb2fcf07b3f7e">&#9670;&#160;</a></span>wiiu_serialize_partition_key_map()</h2>
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<td class="memname">int32_t wiiu_serialize_partition_key_map </td>
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<td class="paramtype">const <a class="el" href="structWiiuPartitionRegion.html">WiiuPartitionRegion</a> *</td> <td class="paramname"><span class="paramname"><em>regions</em></span>, </td>
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<p>Serialize a partition key map for storage as a media tag. </p>
<p>Format (all little-endian): [4 bytes] partition_count For each partition (24 bytes): [4 bytes] start_sector [4 bytes] end_sector [16 bytes] key</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">regions</td><td>Array of partition regions. </td></tr>
<tr><td class="paramname">count</td><td>Number of regions. </td></tr>
<tr><td class="paramname">out_data</td><td>Output: malloc'd buffer (caller must free). </td></tr>
<tr><td class="paramname">out_len</td><td>Output: length of the buffer. </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>0 on success, negative error code on failure. </dd></dl>
<p>&lt; Maximum number of partitions supported.</p>
<p class="definition">Definition at line <a class="el" href="wiiu__crypto_8c_source.html#l00086">86</a> of file <a class="el" href="wiiu__crypto_8c_source.html">wiiu_crypto.c</a>.</p>
<p class="reference">References <a class="el" href="wiiu__crypto_8h_source.html#l00038">WIIU_MAX_PARTITIONS</a>, and <a class="el" href="wiiu__crypto_8c_source.html#l00035">write_le32()</a>.</p>
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