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--></style></head><body lang=EN-US link=blue vlink="#954F72"><div class=WordSection1><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Why? What is the problem with Comic Sans. I like it!</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>You can say more if you have something useful.</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thanks</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Saiteja.</p><p class=MsoNormal><o:p> </o:p></p><div style='mso-element:para-border-div;border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal style='border:none;padding:0in'><b>From: </b><a href="mailto:kudzu@tenebras.com">Michael Sierchio</a><br><b>Sent: </b>Friday, December 29, 2017 10:38 AM<br><b>To: </b><a href="mailto:openssl-users@openssl.org">openssl-users@openssl.org</a><br><b>Subject: </b>Re: [openssl-users] How to form a proper hash after writing somethinginto SSL handshake.</p></div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>Comic Sans. Need I say more?</p></div></div><div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>On Tue, Dec 26, 2017 at 4:53 AM, Sai Teja Chowdary <<a href="mailto:asteja.chowdary.ece13@itbhu.ac.in" target="_blank">asteja.chowdary.ece13@itbhu.ac.in</a>> wrote:</p><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in'><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> </p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:12.0pt;font-family:"Comic Sans MS"'>Hi,</span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:12.0pt;font-family:"Comic Sans MS"'> </span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:12.0pt;font-family:"Comic Sans MS"'>Happy Holidays everyone.</span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:12.0pt;font-family:"Comic Sans MS"'> </span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:12.0pt;font-family:"Comic Sans MS"'>I want to send client certificate, client key exchange and client verify in a single handshake message which appears as multiple handshake messages in a single record. But to sent the client verify I need to first make a hash of previous messages(client certificate and client key exchange) to create the signature.</span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:12.0pt;font-family:"Comic Sans MS"'> </span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:12.0pt;font-family:"Comic Sans MS"'>Can anyone help me to find the function in OpenSSL 1.1.1-dev xx XXX xxxx (or right procedure that needs to be done before creating a certificate verify message)that can do a proper transcript(digest or hash not clear). I tried using <b>ssl3_finish_mac() </b>on the message containing client certificate and client key exchange and then tried to generate the signature in certificate verify message.</span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:12.0pt;font-family:"Comic Sans MS"'>But it is giving me a digest error. I am new to the mailing list want a bit of help to proceed forward stuck here. Please reply in case if anything is not clear.</span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:12.0pt;font-family:"Comic Sans MS"'> </span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:12.0pt;font-family:"Comic Sans MS"'>Here is a code snippet, how I am forming the data containing all client certificate , client key exchange and certificate verify messages inside write_state_machine().</span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:12.0pt;font-family:"Comic Sans MS"'> </span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:12.0pt;font-family:"Comic Sans MS"'>if(WPACKET_init(&pkt, s->init_buf)){</span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:12.0pt;font-family:"Comic Sans MS"'>//Client certificate formation</span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:12.0pt;font-family:"Comic Sans MS"'> if(!ssl_set_handshake_header(s,&pkt,mt) || confunc != NULL && !confunc(s,&pkt) || !ssl_close_construct_packet(s,&pkt,mt)){</span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:12.0pt;font-family:"Comic Sans MS"'> printf("PROBLEM\n");</span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:12.0pt;font-family:"Comic Sans MS"'> }</span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:12.0pt;font-family:"Comic Sans MS"'> transition(s); //transition to next state i.e client key exchange</span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:12.0pt;font-family:"Comic Sans MS"'> </span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:12.0pt;font-family:"Comic Sans MS"'> get_construct_message_f(s, &pkt, &confunc, &mt);</span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:12.0pt;font-family:"Comic Sans MS"'>//client key exchange formation</span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:12.0pt;font-family:"Comic Sans MS"'> if(!ssl_set_handshake_header(s,&pkt,mt) || confunc != NULL && !confunc(s,&pkt) || !ssl_close_construct_packet(s,&pkt,mt)){</span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:12.0pt;font-family:"Comic Sans MS"'> printf("AGAIN A PROBLEMO\n");</span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:12.0pt;font-family:"Comic Sans MS"'> }</span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:12.0pt;font-family:"Comic Sans MS"'> </span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:12.0pt;font-family:"Comic Sans MS"'>//ssl3_finish_mac(s, &s->init_buf->data[s->init_off], s->init_num);</span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:12.0pt;font-family:"Comic Sans MS"'> st->write_state_work = post_work(s, st->write_state_work);</span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:12.0pt;font-family:"Comic Sans MS"'> transition(s); // transition to next state i.e certificate verify</span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:12.0pt;font-family:"Comic Sans MS"'> </span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:12.0pt;font-family:"Comic Sans MS"'> get_construct_message_f(s, &pkt, &confunc, &mt);</span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:12.0pt;font-family:"Comic Sans MS"'>//certificate verify message formation.</span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:12.0pt;font-family:"Comic Sans MS"'> if(!ssl_set_handshake_header(s,&pkt,mt) || confunc != NULL && !confunc(s,&pkt) || !ssl_close_construct_packet(s,&pkt,mt)){</span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:12.0pt;font-family:"Comic Sans MS"'> printf("AGAIN A PROBLEMO\n");</span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:12.0pt;font-family:"Comic Sans MS"'> }</span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:12.0pt;font-family:"Comic Sans MS"'> WPACKET_finish(&pkt);</span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:12.0pt;font-family:"Comic Sans MS"'> </span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:12.0pt;font-family:"Comic Sans MS"'> </span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:12.0pt;font-family:"Comic Sans MS"'>Please take a look at it, appreciate every bit of help.</span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:12.0pt;font-family:"Comic Sans MS"'> </span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Regards,</p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Saiteja</p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> </p></div></div><p class=MsoNormal style='margin-bottom:12.0pt'><br>--<br>openssl-users mailing list<br>To unsubscribe: <a href="https://mta.openssl.org/mailman/listinfo/openssl-users" target="_blank">https://mta.openssl.org/mailman/listinfo/openssl-users</a></p></blockquote></div><p class=MsoNormal><br><br clear=all></p><div><p class=MsoNormal><o:p> </o:p></p></div><p class=MsoNormal>-- </p><div><div><div><div><p class=MsoNormal>"Well," Brahma said, "even after ten thousand explanations, a fool is no wiser, but an intelligent person requires only two thousand five hundred."</p></div></div></div></div></div><p class=MsoNormal><br>- The Mahābhārata</p><p class=MsoNormal><o:p> </o:p></p></div></body></html>