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<span class="edit-link" style="font-size:12px; opacity:0.6; text-align:right; vertical-align:middle"><a target="_blank" href="http://aicdocco/taskstopics/sdk/spienc/enc_introduction.dita">Edit online</a></span><h1 class="- topic/title title topictitle1" id="ariaid-title1">SPI ENC 使用指南</h1>
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<div class="date inPage">16 May 2025</div><div style="color: gray;">
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Read time: 1 minute(s)
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<p class="- topic/p p" data-ofbid="d138124e28__20250519091520">SPI_ENC 是一个对 SPI 总线上的数据进行在线加密和解密的模块。 使用该模块，可实现对 CPU 透明的 SPI 数据加密存储，即 CPU 对 SPI
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存储设备的读写数据都是明文， 但存储在 SPI 设备上的数据是密文，数据的加密和解密操作在 SPI 总线数据传输过程中完成。</p>
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<div class="table-container"><table class="- topic/table table frame-all" id="id__table_qtg_pc3_bdc" data-ofbid="id__table_qtg_pc3_bdc" data-cols="3"><caption class="- topic/title title tablecap" data-caption-side="top" data-is-repeated="true"><span class="table--title-label">表<span class="table--title-label-number"> 1</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">术语定义</span></caption><colgroup><col/><col/><col/></colgroup><thead class="- topic/thead thead">
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<tr class="- topic/row">
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<th class="- topic/entry entry colsep-1 rowsep-1" id="id__table_qtg_pc3_bdc__entry__1"><p class="- topic/p p" data-ofbid="d138124e46__20250519091520">术语</p></th>
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<th class="- topic/entry entry colsep-1 rowsep-1" id="id__table_qtg_pc3_bdc__entry__2"><p class="- topic/p p" data-ofbid="d138124e50__20250519091520">定义</p></th>
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<th class="- topic/entry entry colsep-0 rowsep-1" id="id__table_qtg_pc3_bdc__entry__3"><p class="- topic/p p" data-ofbid="d138124e54__20250519091520">注释说明</p></th>
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</thead><tbody class="- topic/tbody tbody">
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<td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_qtg_pc3_bdc__entry__1"><p class="- topic/p p" data-ofbid="d138124e64__20250519091520">AES</p></td>
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<td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_qtg_pc3_bdc__entry__2"><p class="- topic/p p" data-ofbid="d138124e68__20250519091520">Advanced Encryption Standard</p></td>
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<td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_qtg_pc3_bdc__entry__3"><p class="- topic/p p" data-ofbid="d138124e72__20250519091520">一种对称分组密钥算法</p></td>
|
2025-04-23 17:54:31 +08:00
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</tr>
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<tr class="- topic/row">
|
2025-07-22 11:15:46 +08:00
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<td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_qtg_pc3_bdc__entry__1"><p class="- topic/p p" data-ofbid="d138124e79__20250519091520">ECB</p></td>
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<td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_qtg_pc3_bdc__entry__2"><p class="- topic/p p" data-ofbid="d138124e83__20250519091520">Electronic Code Book</p></td>
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<td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_qtg_pc3_bdc__entry__3"><p class="- topic/p p" data-ofbid="d138124e87__20250519091520">电子密码本模式</p></td>
|
2025-04-23 17:54:31 +08:00
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</tr>
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<tr class="- topic/row">
|
2025-07-22 11:15:46 +08:00
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<td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_qtg_pc3_bdc__entry__1"><p class="- topic/p p" data-ofbid="d138124e94__20250519091520">CTR</p></td>
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<td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_qtg_pc3_bdc__entry__2"><p class="- topic/p p" data-ofbid="d138124e98__20250519091520">Counter</p></td>
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<td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_qtg_pc3_bdc__entry__3"><p class="- topic/p p" data-ofbid="d138124e102__20250519091520">计数器模式</p></td>
|
2025-04-23 17:54:31 +08:00
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</tr>
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<tr class="- topic/row">
|
2025-07-22 11:15:46 +08:00
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<td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_qtg_pc3_bdc__entry__1"><p class="- topic/p p" data-ofbid="d138124e109__20250519091520">SPI</p></td>
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<td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_qtg_pc3_bdc__entry__2"><p class="- topic/p p" data-ofbid="d138124e113__20250519091520">Serial Peripheral Interface</p></td>
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<td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_qtg_pc3_bdc__entry__3"><p class="- topic/p p" data-ofbid="d138124e117__20250519091520">串行外设接口</p></td>
|
2025-04-23 17:54:31 +08:00
|
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</tr>
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|
|
<tr class="- topic/row">
|
2025-07-22 11:15:46 +08:00
|
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|
<td class="- topic/entry entry colsep-1 rowsep-0" headers="id__table_qtg_pc3_bdc__entry__1"><p class="- topic/p p" data-ofbid="d138124e124__20250519091520">BROM</p></td>
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<td class="- topic/entry entry colsep-1 rowsep-0" headers="id__table_qtg_pc3_bdc__entry__2"><p class="- topic/p p" data-ofbid="d138124e128__20250519091520">Boot ROM</p></td>
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|
<td class="- topic/entry entry colsep-0 rowsep-0" headers="id__table_qtg_pc3_bdc__entry__3"><p class="- topic/p p" data-ofbid="d138124e132__20250519091520">固化在芯片中的启动程序</p></td>
|
2025-04-23 17:54:31 +08:00
|
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</tr>
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</tbody></table></div>
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<section class="- topic/section section" id="id__id3" data-ofbid="id__id3"><h2 class="- topic/title title sectiontitle">模块特性</h2>
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|
2025-07-22 11:15:46 +08:00
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<p class="- topic/p p" data-ofbid="d138124e144__20250519091520">SPI_ENC 具备下列功能特性：</p>
|
2025-04-23 17:54:31 +08:00
|
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|
<ul class="- topic/ul ul simple" id="id__ul_stg_pc3_bdc" data-ofbid="id__ul_stg_pc3_bdc">
|
2025-07-22 11:15:46 +08:00
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<li class="- topic/li li" data-ofbid="d138124e149__20250519091520">
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<p class="- topic/p p" data-ofbid="d138124e151__20250519091520">使用 AES-128-CTR 加密和解密</p>
|
2025-04-23 17:54:31 +08:00
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|
</li>
|
2025-07-22 11:15:46 +08:00
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<li class="- topic/li li" data-ofbid="d138124e155__20250519091520">
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<p class="- topic/p p" data-ofbid="d138124e157__20250519091520">可通过配置连接到不同的 SPI 控制器</p>
|
2025-04-23 17:54:31 +08:00
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</li>
|
2025-07-22 11:15:46 +08:00
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<li class="- topic/li li" data-ofbid="d138124e161__20250519091520">
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<p class="- topic/p p" data-ofbid="d138124e163__20250519091520">可通过 eFuse 配置密钥</p>
|
2025-04-23 17:54:31 +08:00
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</li>
|
2025-07-22 11:15:46 +08:00
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<li class="- topic/li li" data-ofbid="d138124e167__20250519091520">
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<p class="- topic/p p" data-ofbid="d138124e169__20250519091520">支持明文和密文混合传输</p>
|
2025-04-23 17:54:31 +08:00
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</li>
|
2025-07-22 11:15:46 +08:00
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<li class="- topic/li li" data-ofbid="d138124e173__20250519091520">
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<p class="- topic/p p" data-ofbid="d138124e175__20250519091520">不影响 SPI 总线传输带宽</p>
|
2025-04-23 17:54:31 +08:00
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</li>
|
2025-07-22 11:15:46 +08:00
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<li class="- topic/li li" data-ofbid="d138124e180__20250519091520">
|
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<p class="- topic/p p" data-ofbid="d138124e182__20250519091520">不支持 SPI 全双工模式</p>
|
2025-04-23 17:54:31 +08:00
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</li>
|
2025-07-22 11:15:46 +08:00
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<li class="- topic/li li" data-ofbid="d138124e186__20250519091520">
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<p class="- topic/p p" data-ofbid="d138124e188__20250519091520">使用所连接的 SPI 控制器的 HCLK</p>
|
2025-04-23 17:54:31 +08:00
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</li>
|
2025-07-22 11:15:46 +08:00
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<li class="- topic/li li" data-ofbid="d138124e192__20250519091520">
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<p class="- topic/p p" data-ofbid="d138124e194__20250519091520">内置 64 字节分组密钥 Buffer</p>
|
2025-04-23 17:54:31 +08:00
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</li>
|
2025-07-22 11:15:46 +08:00
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<li class="- topic/li li" data-ofbid="d138124e198__20250519091520">
|
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<p class="- topic/p p" data-ofbid="d138124e200__20250519091520">支持空 Page 检测</p>
|
2025-04-23 17:54:31 +08:00
|
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</li>
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</ul>
|
2025-07-22 11:15:46 +08:00
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|
<p class="- topic/p p" data-ofbid="d138124e205__20250519091520">用途：</p>
|
2025-04-23 17:54:31 +08:00
|
|
|
|
<ul class="- topic/ul ul simple" id="id__ul_utg_pc3_bdc" data-ofbid="id__ul_utg_pc3_bdc">
|
2025-07-22 11:15:46 +08:00
|
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<li class="- topic/li li" data-ofbid="d138124e210__20250519091520">
|
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<p class="- topic/p p" data-ofbid="d138124e212__20250519091520">可用于实现 SPI NAND / SPI NOR 的全盘加密</p>
|
2025-04-23 17:54:31 +08:00
|
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|
</li>
|
2025-07-22 11:15:46 +08:00
|
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<li class="- topic/li li" data-ofbid="d138124e216__20250519091520">
|
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|
<p class="- topic/p p" data-ofbid="d138124e218__20250519091520">SPI NAND / SPI NOR 上的固件防拷贝</p>
|
2025-04-23 17:54:31 +08:00
|
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|
</li>
|
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</ul>
|
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</section>
|
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<section class="- topic/section section" id="id__id4" data-ofbid="id__id4"><h2 class="- topic/title title sectiontitle">原理框图</h2>
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<figure class="- topic/fig fig fignone" id="id__id5" data-ofbid="id__id5">
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<br/><div class="imagecenter"><img class="- topic/image image imagecenter" id="id__image_vtg_pc3_bdc" src="../../../images/memory/spienc_block_diagram1.png" alt="spienc_block_diagram1"/></div><br/>
|
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<figcaption data-caption-side="bottom" class="- topic/title title figcapcenter"><span class="figtitleprefix fig--title-label">图<span class="fig--title-label-number"> 1</span><span class="fig--title-label-punctuation">. </span></span><span class="fig--title">SPI ENC 原理框图</span></figcaption></figure>
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</section>
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</div>
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</article></main></div>
|
2025-01-23 16:37:00 +08:00
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<div class=" wh_child_links d-print-none "><nav aria-label="Child Links" role="navigation" class="- topic/related-links related-links"><ul class="ullinks"><li class="- topic/link link ulchildlink"><strong><a href="../../../topics/sdk/spienc/enc_config_guide.html">参数配置</a></strong></li><li class="- topic/link link ulchildlink"><strong><a href="../../../topics/sdk/spienc/enc_test_guide.html">测试指南</a></strong></li><li class="- topic/link link ulchildlink"><strong><a href="../../../topics/sdk/spienc/enc_design_introduction.html">设计说明</a></strong></li></ul></nav></div>
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<div class=" wh_topic_toc "><div class="wh_topic_label">在本页上</div><ul><li class="section-item"><div class="section-title"><a href="#id__id3" data-tocid="id__id3">模块特性</a></div></li><li class="section-item"><div class="section-title"><a href="#id__id4" data-tocid="id__id4">原理框图</a></div></li></ul></div>
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