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436 lines
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<div class="header">
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<div class="summary">
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<a href="#define-members">Macros</a> |
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<a href="#func-members">Functions</a> </div>
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<div class="headertitle">
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<div class="title">DCP AES blocking driver<div class="ingroups"><a class="el" href="a00019.html">DCP: Data Co-Processor</a></div></div> </div>
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</div><!--header-->
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<div class="contents">
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<a name="details" id="details"></a><h2 class="groupheader">Overview</h2>
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<p>This section describes the programming interface of the DCP AES blocking driver. </p>
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<table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="define-members"></a>
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Macros</h2></td></tr>
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<tr class="memitem:ga79352c57e1d42e0798b4d46732ddd0a6"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ga79352c57e1d42e0798b4d46732ddd0a6"></a>
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#define </td><td class="memItemRight" valign="bottom"><a class="el" href="a00261.html#ga79352c57e1d42e0798b4d46732ddd0a6">DCP_AES_BLOCK_SIZE</a>   16</td></tr>
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<tr class="memdesc:ga79352c57e1d42e0798b4d46732ddd0a6"><td class="mdescLeft"> </td><td class="mdescRight">AES block size in bytes. <br/></td></tr>
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<tr class="separator:ga79352c57e1d42e0798b4d46732ddd0a6"><td class="memSeparator" colspan="2"> </td></tr>
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</table><table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
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Functions</h2></td></tr>
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<tr class="memitem:ga15f23983b967199537cda25d70761d82"><td class="memItemLeft" align="right" valign="top"><a class="el" href="a00260.html#gaaabdaf7ee58ca7269bd4bf24efcde092">status_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="a00261.html#ga15f23983b967199537cda25d70761d82">DCP_AES_SetKey</a> (DCP_Type *base, <a class="el" href="a00019.html#ga3a72807e47a0e99f3827c8ca5b299484">dcp_handle_t</a> *handle, const uint8_t *key, size_t keySize)</td></tr>
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<tr class="memdesc:ga15f23983b967199537cda25d70761d82"><td class="mdescLeft"> </td><td class="mdescRight">Set AES key to dcp_handle_t struct and optionally to DCP. <a href="#ga15f23983b967199537cda25d70761d82">More...</a><br/></td></tr>
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<tr class="separator:ga15f23983b967199537cda25d70761d82"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ga24ec493fe8f07ba4489e2f798531862d"><td class="memItemLeft" align="right" valign="top"><a class="el" href="a00260.html#gaaabdaf7ee58ca7269bd4bf24efcde092">status_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="a00261.html#ga24ec493fe8f07ba4489e2f798531862d">DCP_AES_EncryptEcb</a> (DCP_Type *base, <a class="el" href="a00019.html#ga3a72807e47a0e99f3827c8ca5b299484">dcp_handle_t</a> *handle, const uint8_t *plaintext, uint8_t *ciphertext, size_t size)</td></tr>
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<tr class="memdesc:ga24ec493fe8f07ba4489e2f798531862d"><td class="mdescLeft"> </td><td class="mdescRight">Encrypts AES on one or multiple 128-bit block(s). <a href="#ga24ec493fe8f07ba4489e2f798531862d">More...</a><br/></td></tr>
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<tr class="separator:ga24ec493fe8f07ba4489e2f798531862d"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:gad92e84b3cfd032400487113232f18bcf"><td class="memItemLeft" align="right" valign="top"><a class="el" href="a00260.html#gaaabdaf7ee58ca7269bd4bf24efcde092">status_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="a00261.html#gad92e84b3cfd032400487113232f18bcf">DCP_AES_DecryptEcb</a> (DCP_Type *base, <a class="el" href="a00019.html#ga3a72807e47a0e99f3827c8ca5b299484">dcp_handle_t</a> *handle, const uint8_t *ciphertext, uint8_t *plaintext, size_t size)</td></tr>
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<tr class="memdesc:gad92e84b3cfd032400487113232f18bcf"><td class="mdescLeft"> </td><td class="mdescRight">Decrypts AES on one or multiple 128-bit block(s). <a href="#gad92e84b3cfd032400487113232f18bcf">More...</a><br/></td></tr>
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<tr class="separator:gad92e84b3cfd032400487113232f18bcf"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:gac02bf9fce15f0b01521df1c33473a7fe"><td class="memItemLeft" align="right" valign="top"><a class="el" href="a00260.html#gaaabdaf7ee58ca7269bd4bf24efcde092">status_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="a00261.html#gac02bf9fce15f0b01521df1c33473a7fe">DCP_AES_EncryptCbc</a> (DCP_Type *base, <a class="el" href="a00019.html#ga3a72807e47a0e99f3827c8ca5b299484">dcp_handle_t</a> *handle, const uint8_t *plaintext, uint8_t *ciphertext, size_t size, const uint8_t iv[16])</td></tr>
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<tr class="memdesc:gac02bf9fce15f0b01521df1c33473a7fe"><td class="mdescLeft"> </td><td class="mdescRight">Encrypts AES using CBC block mode. <a href="#gac02bf9fce15f0b01521df1c33473a7fe">More...</a><br/></td></tr>
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<tr class="separator:gac02bf9fce15f0b01521df1c33473a7fe"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ga1fb597b20b09424edd91fa83d684d203"><td class="memItemLeft" align="right" valign="top"><a class="el" href="a00260.html#gaaabdaf7ee58ca7269bd4bf24efcde092">status_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="a00261.html#ga1fb597b20b09424edd91fa83d684d203">DCP_AES_DecryptCbc</a> (DCP_Type *base, <a class="el" href="a00019.html#ga3a72807e47a0e99f3827c8ca5b299484">dcp_handle_t</a> *handle, const uint8_t *ciphertext, uint8_t *plaintext, size_t size, const uint8_t iv[16])</td></tr>
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<tr class="memdesc:ga1fb597b20b09424edd91fa83d684d203"><td class="mdescLeft"> </td><td class="mdescRight">Decrypts AES using CBC block mode. <a href="#ga1fb597b20b09424edd91fa83d684d203">More...</a><br/></td></tr>
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<tr class="separator:ga1fb597b20b09424edd91fa83d684d203"><td class="memSeparator" colspan="2"> </td></tr>
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</table>
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<h2 class="groupheader">Function Documentation</h2>
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<a class="anchor" id="ga15f23983b967199537cda25d70761d82"></a>
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<div class="memitem">
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<div class="memproto">
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<table class="memname">
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<tr>
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<td class="memname"><a class="el" href="a00260.html#gaaabdaf7ee58ca7269bd4bf24efcde092">status_t</a> DCP_AES_SetKey </td>
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<td>(</td>
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<td class="paramtype">DCP_Type * </td>
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<td class="paramname"><em>base</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype"><a class="el" href="a00019.html#ga3a72807e47a0e99f3827c8ca5b299484">dcp_handle_t</a> * </td>
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<td class="paramname"><em>handle</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">const uint8_t * </td>
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<td class="paramname"><em>key</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">size_t </td>
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<td class="paramname"><em>keySize</em> </td>
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</tr>
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<tr>
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<td></td>
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<td>)</td>
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<td></td><td></td>
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</tr>
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</table>
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</div><div class="memdoc">
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<p>Sets the AES key for encryption/decryption with the dcp_handle_t structure. The dcp_handle_t input argument specifies keySlot. If the keySlot is kDCP_OtpKey, the function will check the OTP_KEY_READY bit and will return it's ready to use status. For other keySlot selections, the function will copy and hold the key in dcp_handle_t struct. If the keySlot is one of the four DCP SRAM-based keys (one of kDCP_KeySlot0, kDCP_KeySlot1, kDCP_KeySlot2, kDCP_KeySlot3), this function will also load the supplied key to the specified keySlot in DCP.</p>
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">base</td><td>DCP peripheral base address. </td></tr>
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<tr><td class="paramname">handle</td><td>Handle used for the request. </td></tr>
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<tr><td class="paramname">key</td><td>0-mod-4 aligned pointer to AES key. </td></tr>
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<tr><td class="paramname">keySize</td><td>AES key size in bytes. Shall equal 16. </td></tr>
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</table>
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</dd>
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</dl>
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<dl class="section return"><dt>Returns</dt><dd>status from set key operation </dd></dl>
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</div>
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</div>
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<a class="anchor" id="ga24ec493fe8f07ba4489e2f798531862d"></a>
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<div class="memitem">
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<div class="memproto">
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<table class="memname">
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<tr>
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<td class="memname"><a class="el" href="a00260.html#gaaabdaf7ee58ca7269bd4bf24efcde092">status_t</a> DCP_AES_EncryptEcb </td>
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<td>(</td>
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<td class="paramtype">DCP_Type * </td>
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<td class="paramname"><em>base</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype"><a class="el" href="a00019.html#ga3a72807e47a0e99f3827c8ca5b299484">dcp_handle_t</a> * </td>
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<td class="paramname"><em>handle</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">const uint8_t * </td>
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<td class="paramname"><em>plaintext</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">uint8_t * </td>
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<td class="paramname"><em>ciphertext</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">size_t </td>
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<td class="paramname"><em>size</em> </td>
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</tr>
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<tr>
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<td></td>
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<td>)</td>
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<td></td><td></td>
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</tr>
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</table>
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</div><div class="memdoc">
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<p>Encrypts AES. The source plaintext and destination ciphertext can overlap in system memory.</p>
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramdir"></td><td class="paramname">base</td><td>DCP peripheral base address </td></tr>
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<tr><td class="paramdir"></td><td class="paramname">handle</td><td>Handle used for this request. </td></tr>
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<tr><td class="paramdir"></td><td class="paramname">plaintext</td><td>Input plain text to encrypt </td></tr>
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<tr><td class="paramdir">[out]</td><td class="paramname">ciphertext</td><td>Output cipher text </td></tr>
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<tr><td class="paramdir"></td><td class="paramname">size</td><td>Size of input and output data in bytes. Must be multiple of 16 bytes. </td></tr>
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</table>
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</dd>
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</dl>
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<dl class="section return"><dt>Returns</dt><dd>Status from encrypt operation </dd></dl>
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</div>
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</div>
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<a class="anchor" id="gad92e84b3cfd032400487113232f18bcf"></a>
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<div class="memitem">
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<div class="memproto">
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<table class="memname">
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<tr>
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<td class="memname"><a class="el" href="a00260.html#gaaabdaf7ee58ca7269bd4bf24efcde092">status_t</a> DCP_AES_DecryptEcb </td>
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<td>(</td>
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<td class="paramtype">DCP_Type * </td>
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<td class="paramname"><em>base</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype"><a class="el" href="a00019.html#ga3a72807e47a0e99f3827c8ca5b299484">dcp_handle_t</a> * </td>
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<td class="paramname"><em>handle</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">const uint8_t * </td>
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<td class="paramname"><em>ciphertext</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">uint8_t * </td>
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<td class="paramname"><em>plaintext</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">size_t </td>
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<td class="paramname"><em>size</em> </td>
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</tr>
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<tr>
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<td></td>
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<td>)</td>
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<td></td><td></td>
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</tr>
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</table>
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</div><div class="memdoc">
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<p>Decrypts AES. The source ciphertext and destination plaintext can overlap in system memory.</p>
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramdir"></td><td class="paramname">base</td><td>DCP peripheral base address </td></tr>
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<tr><td class="paramdir"></td><td class="paramname">handle</td><td>Handle used for this request. </td></tr>
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<tr><td class="paramdir"></td><td class="paramname">ciphertext</td><td>Input plain text to encrypt </td></tr>
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<tr><td class="paramdir">[out]</td><td class="paramname">plaintext</td><td>Output cipher text </td></tr>
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<tr><td class="paramdir"></td><td class="paramname">size</td><td>Size of input and output data in bytes. Must be multiple of 16 bytes. </td></tr>
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</table>
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</dd>
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</dl>
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<dl class="section return"><dt>Returns</dt><dd>Status from decrypt operation </dd></dl>
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</div>
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</div>
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<a class="anchor" id="gac02bf9fce15f0b01521df1c33473a7fe"></a>
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<div class="memitem">
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<div class="memproto">
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<table class="memname">
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<tr>
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<td class="memname"><a class="el" href="a00260.html#gaaabdaf7ee58ca7269bd4bf24efcde092">status_t</a> DCP_AES_EncryptCbc </td>
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<td>(</td>
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<td class="paramtype">DCP_Type * </td>
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<td class="paramname"><em>base</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype"><a class="el" href="a00019.html#ga3a72807e47a0e99f3827c8ca5b299484">dcp_handle_t</a> * </td>
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<td class="paramname"><em>handle</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">const uint8_t * </td>
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<td class="paramname"><em>plaintext</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">uint8_t * </td>
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<td class="paramname"><em>ciphertext</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">size_t </td>
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<td class="paramname"><em>size</em>, </td>
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</tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">const uint8_t </td>
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<td class="paramname"><em>iv</em>[16] </td>
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</tr>
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<tr>
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<td></td>
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<td>)</td>
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<td></td><td></td>
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</tr>
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</table>
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</div><div class="memdoc">
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<p>Encrypts AES using CBC block mode. The source plaintext and destination ciphertext can overlap in system memory.</p>
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramdir"></td><td class="paramname">base</td><td>DCP peripheral base address </td></tr>
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<tr><td class="paramdir"></td><td class="paramname">handle</td><td>Handle used for this request. </td></tr>
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<tr><td class="paramdir"></td><td class="paramname">plaintext</td><td>Input plain text to encrypt </td></tr>
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<tr><td class="paramdir">[out]</td><td class="paramname">ciphertext</td><td>Output cipher text </td></tr>
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<tr><td class="paramdir"></td><td class="paramname">size</td><td>Size of input and output data in bytes. Must be multiple of 16 bytes. </td></tr>
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<tr><td class="paramdir"></td><td class="paramname">iv</td><td>Input initial vector to combine with the first input block. </td></tr>
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</table>
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</dd>
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</dl>
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<dl class="section return"><dt>Returns</dt><dd>Status from encrypt operation </dd></dl>
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</div>
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</div>
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<a class="anchor" id="ga1fb597b20b09424edd91fa83d684d203"></a>
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<div class="memitem">
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<div class="memproto">
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<td class="memname"><a class="el" href="a00260.html#gaaabdaf7ee58ca7269bd4bf24efcde092">status_t</a> DCP_AES_DecryptCbc </td>
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<td>(</td>
|
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<td class="paramtype">DCP_Type * </td>
|
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<td class="paramname"><em>base</em>, </td>
|
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</tr>
|
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<tr>
|
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype"><a class="el" href="a00019.html#ga3a72807e47a0e99f3827c8ca5b299484">dcp_handle_t</a> * </td>
|
|
<td class="paramname"><em>handle</em>, </td>
|
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</tr>
|
|
<tr>
|
|
<td class="paramkey"></td>
|
|
<td></td>
|
|
<td class="paramtype">const uint8_t * </td>
|
|
<td class="paramname"><em>ciphertext</em>, </td>
|
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</tr>
|
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<tr>
|
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<td class="paramkey"></td>
|
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<td></td>
|
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<td class="paramtype">uint8_t * </td>
|
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<td class="paramname"><em>plaintext</em>, </td>
|
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</tr>
|
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<tr>
|
|
<td class="paramkey"></td>
|
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<td></td>
|
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<td class="paramtype">size_t </td>
|
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<td class="paramname"><em>size</em>, </td>
|
|
</tr>
|
|
<tr>
|
|
<td class="paramkey"></td>
|
|
<td></td>
|
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<td class="paramtype">const uint8_t </td>
|
|
<td class="paramname"><em>iv</em>[16] </td>
|
|
</tr>
|
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<tr>
|
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<td></td>
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<td>)</td>
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<td></td><td></td>
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</tr>
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</table>
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</div><div class="memdoc">
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<p>Decrypts AES using CBC block mode. The source ciphertext and destination plaintext can overlap in system memory.</p>
|
|
<dl class="params"><dt>Parameters</dt><dd>
|
|
<table class="params">
|
|
<tr><td class="paramdir"></td><td class="paramname">base</td><td>DCP peripheral base address </td></tr>
|
|
<tr><td class="paramdir"></td><td class="paramname">handle</td><td>Handle used for this request. </td></tr>
|
|
<tr><td class="paramdir"></td><td class="paramname">ciphertext</td><td>Input cipher text to decrypt </td></tr>
|
|
<tr><td class="paramdir">[out]</td><td class="paramname">plaintext</td><td>Output plain text </td></tr>
|
|
<tr><td class="paramdir"></td><td class="paramname">size</td><td>Size of input and output data in bytes. Must be multiple of 16 bytes. </td></tr>
|
|
<tr><td class="paramdir"></td><td class="paramname">iv</td><td>Input initial vector to combine with the first input block. </td></tr>
|
|
</table>
|
|
</dd>
|
|
</dl>
|
|
<dl class="section return"><dt>Returns</dt><dd>Status from decrypt operation </dd></dl>
|
|
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</div>
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</div>
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