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<?xml-stylesheet type="text/xsl" href="https://devzone.nordicsemi.com/cfs-file/__key/system/syndication/rss.xsl" media="screen"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:slash="http://purl.org/rss/1.0/modules/slash/" xmlns:wfw="http://wellformedweb.org/CommentAPI/" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>nrf_crypto aes_ccm star nonce last byte makes the procedure to fail</title><link>https://devzone.nordicsemi.com/f/nordic-q-a/104819/nrf_crypto-aes_ccm-star-nonce-last-byte-makes-the-procedure-to-fail</link><description>Hello! 
 I am trying to use the cc310 encryption backend for ccm* encryption. 
 My problem is that the last byte of the nonce I give as an input parameter to the sdk driver has to be a specific value, and specifically 0x07. 
 I also noticed that the same</description><dc:language>en-US</dc:language><generator>Telligent Community 13</generator><lastBuildDate>Sun, 22 Oct 2023 06:52:45 GMT</lastBuildDate><atom:link rel="self" type="application/rss+xml" href="https://devzone.nordicsemi.com/f/nordic-q-a/104819/nrf_crypto-aes_ccm-star-nonce-last-byte-makes-the-procedure-to-fail" /><item><title>RE: nrf_crypto aes_ccm star nonce last byte makes the procedure to fail</title><link>https://devzone.nordicsemi.com/thread/451590?ContentTypeID=1</link><pubDate>Sun, 22 Oct 2023 06:52:45 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:107d98cb-3890-4709-b699-ee8556c0682d</guid><dc:creator>Susheel Nuguru</dc:creator><description>&lt;p&gt;I am not sure what TSCH mode is. Guessing that it is tinyscript and it looks like there is support in Zephyr which is inherited into nRF Connect SDK.&lt;/p&gt;
&lt;p&gt;&lt;a href="https://docs.zephyrproject.org/latest/services/crypto/tinycrypt.html"&gt;docs.zephyrproject.org/.../tinycrypt.html&lt;/a&gt;&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: nrf_crypto aes_ccm star nonce last byte makes the procedure to fail</title><link>https://devzone.nordicsemi.com/thread/451264?ContentTypeID=1</link><pubDate>Thu, 19 Oct 2023 11:12:29 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:e1766a40-d2fe-4048-b1eb-eb86bad3e168</guid><dc:creator>galazari</dc:creator><description>&lt;p&gt;Does the&amp;nbsp;nRF Connect SDK support ccm* with nonce in TSCH mode?&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: nrf_crypto aes_ccm star nonce last byte makes the procedure to fail</title><link>https://devzone.nordicsemi.com/thread/451260?ContentTypeID=1</link><pubDate>Thu, 19 Oct 2023 11:00:31 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:c614f28c-9009-4773-a88b-a84e5d4fa9e2</guid><dc:creator>Susheel Nuguru</dc:creator><description>&lt;p&gt;We do not add any new features to nRF5SDK. If you want newer features please consider to to move to &lt;a href="https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrf/index.html"&gt;nRF Connect SDK&lt;/a&gt;.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: nrf_crypto aes_ccm star nonce last byte makes the procedure to fail</title><link>https://devzone.nordicsemi.com/thread/451202?ContentTypeID=1</link><pubDate>Thu, 19 Oct 2023 07:49:00 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:2967d7df-2b0d-404a-abfa-e74ca7db49b5</guid><dc:creator>galazari</dc:creator><description>&lt;p&gt;I just found a thread that explains my issue here,&amp;nbsp;&amp;nbsp;&lt;a href="https://devzone.nordicsemi.com/f/nordic-q-a/31216/cryptocell-cc310-aes-ccm-arbitrary-nonce"&gt;CryptoCell CC310 AES CCM* arbitrary Nonce&lt;/a&gt;&amp;nbsp;&lt;/p&gt;
&lt;p&gt;It seems that the TSCH mode is not supported my the cryptocell library. Are there any plans to add support?&amp;nbsp;&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item></channel></rss>