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<p class="MsoNormal">Hi Bala,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Ciphertext will be written into asym_op->rsa.cipher.data (not message.data) by the PMD, here you are using same address for both hex dumps.<o:p></o:p></p>
<p class="MsoNormal">Although there is a bug in debug_hexdump in this function which may cause this confusion.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Plus, the test you are referring is PWCT test (Pairwise conditional test) -> it will encrypt, then decrypt.<o:p></o:p></p>
<p class="MsoNormal">Please take a look into this comment in queue_ops_rsa_enc_dec function:<o:p></o:p></p>
<p class="MsoNormal">/* Use the resulted output as decryption Input vector*<o:p></o:p></p>
<p class="MsoNormal">So above this line there is an encryption part.<o:p></o:p></p>
<p class="MsoNormal">Below is decryption. <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Regards,<o:p></o:p></p>
<p class="MsoNormal">Arek<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><b>From:</b> Balakrishnan K <Balakrishnan.K1@tatacommunications.com>
<br>
<b>Sent:</b> Monday, May 23, 2022 1:33 PM<br>
<b>To:</b> users@dpdk.org<br>
<b>Subject:</b> how to use crypto openssl PMD for asymmetric encryption and decryption<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Hi All,<o:p></o:p></p>
<p class="MsoNormal"> I am new to dpdk. Planning to use openssl crypto PMD for encrypting/decrypting the packets.<o:p></o:p></p>
<p class="MsoNormal">Couldn’t find much documents on openssl PMD for <b>asymmetric</b> encryption/decryption.<o:p></o:p></p>
<p class="MsoNormal">Any one please point me in the right document.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I have tried to run the test cases wrote for asymmetric crypto using openssl virtual PMD.<o:p></o:p></p>
<p class="MsoNormal">But the output of particular test case is same after the encryption done.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">File : app/test/test_cryptodev_asym.c<o:p></o:p></p>
<p class="MsoNormal">Test executable: ./app/test/dpdk-test<o:p></o:p></p>
<p class="MsoNormal">Test case : test_rsa_enc_dec<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal"><b>Input given to encryption: <o:p></o:p></b></p>
<p class="MsoNormal">message at [0x1894e60], len=20<o:p></o:p></p>
<p class="MsoNormal">00000000: F8 BA 1A 55 D0 2F 85 AE 96 7B B6 2F B6 CD A8 EB | ...U./...{./....<o:p></o:p></p>
<p class="MsoNormal">00000010: 7E 78 A0 50 | ~x.P<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><b>After processing the output also looks like same :<o:p></o:p></b></p>
<p class="MsoNormal">encrypted message exist at [0x1894e60], len=20<o:p></o:p></p>
<p class="MsoNormal">00000000: F8 BA 1A 55 D0 2F 85 AE 96 7B B6 2F B6 CD A8 EB | ...U./...{./....<o:p></o:p></p>
<p class="MsoNormal">00000010: 7E 78 A0 50<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Regards,<o:p></o:p></p>
<p class="MsoNormal">Bala <o:p></o:p></p>
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