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<p class="MsoNormal"><span style="font-size:11.0pt;color:black">I am using the openssl 3.0.0 library in an embedded environment and added a unit test for RSA based on test/rsa_mp_test.c:test_rsa_mp().</span><span style="color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:black">When the test is run, I see:</span><span style="color:black"><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:23.25pt;text-indent:-.25in"><span style="color:black">1.</span><span style="font-size:7.0pt;font-family:"Times New Roman",serif;color:black"> </span><span style="font-size:11.0pt;color:black">crypto/rsa/rsa_pk1.c:RSA_padding_check_PKCS1_type_2()
calls RSAerr() just before returning at the bottom of the function in what appears to be the success path.</span><span style="color:black"><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:23.25pt;text-indent:-.25in"><span style="color:black">2.</span><span style="font-size:7.0pt;font-family:"Times New Roman",serif;color:black"> </span><span style="font-size:11.0pt;color:black">crypto/rsa/rsa_ossl.c:rsa_ossl_private_decrypt()
calls RSAerr() near the bottom of the function, regardless of the value of ‘r’ – so also in what appears to be the success path.</span><span style="color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:black"> </span><span style="color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:black">Both errors indicate padding problems for what are presumably good test data. If I comment out the rsa_pk1.c case and add if (r < 0) to the rsa_ossl.c case, the final comparison in the test indicates
that the encrypt/decrypt resulted in the original data.</span><span style="color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:black"> </span><span style="color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:black">What am I missing here?</span><span style="color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:black"> </span><span style="color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:black">--tnx</span><span style="color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:black">--tom</span><span style="color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-bottom:12.0pt"><o:p> </o:p></p>
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