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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>Can’t make bootloader_secure example to pass signature check</title><link>https://devzone.nordicsemi.com/f/nordic-q-a/16294/can-t-make-bootloader_secure-example-to-pass-signature-check</link><description>Hi,
I’m trying to use new SKD 12 secured bootloader but can’t pass signature check in dfu_req_handling.c\dfu_handle_prevalidate() (code after switch case DFU_SIGNATURE_TYPE_ECDSA_P256_SHA256 ). Function nrf_crypto_verify() returns 0. 
 The things I</description><dc:language>en-US</dc:language><generator>Telligent Community 13</generator><lastBuildDate>Wed, 21 Sep 2016 02:58:28 GMT</lastBuildDate><atom:link rel="self" type="application/rss+xml" href="https://devzone.nordicsemi.com/f/nordic-q-a/16294/can-t-make-bootloader_secure-example-to-pass-signature-check" /><item><title>RE: Can’t make bootloader_secure example to pass signature check</title><link>https://devzone.nordicsemi.com/thread/62277?ContentTypeID=1</link><pubDate>Wed, 21 Sep 2016 02:58:28 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:22c52443-c36e-4089-8eb0-30d952713641</guid><dc:creator>gohak</dc:creator><description>&lt;p&gt;Konstantin,&lt;/p&gt;
&lt;p&gt;Awesome! Thanks for the advice. It works now.&lt;/p&gt;
&lt;p&gt;Originally, when you link it with the IAR project and tries to download and debug your secure application, IAR would throw an error as it contains unsupported .debug_out format due to the uECC library which is compiled using ARM GCC. Hence, this led me to try using IAR to build the library which led to this issue.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: Can’t make bootloader_secure example to pass signature check</title><link>https://devzone.nordicsemi.com/thread/62276?ContentTypeID=1</link><pubDate>Tue, 20 Sep 2016 12:19:14 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:3a725902-9581-4bc4-9e9d-45249edc36cc</guid><dc:creator>Konstantin</dc:creator><description>&lt;p&gt;Hi, gohak.
My fault was compiling uecc libraries with IAR tools. I don&amp;#39;t clearly know why but doing same things accordingly the compilation notes &lt;a href="http://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.nrf52%2Fdita%2Fnrf52%2Fnrf52_series.html&amp;amp;cp=1"&gt;infocenter.nordicsemi.com/index.jsp&lt;/a&gt; works well.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: Can’t make bootloader_secure example to pass signature check</title><link>https://devzone.nordicsemi.com/thread/62275?ContentTypeID=1</link><pubDate>Tue, 20 Sep 2016 11:07:00 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:cfdb3dc0-7817-444f-9020-65ec571d9b46</guid><dc:creator>gohak</dc:creator><description>&lt;p&gt;I am also observing similar issue and would be interested in knowing if there is a solution here.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item></channel></rss>