<div dir="ltr">Oh yes SHA1 can certainly be compromised. I feel a better approach to migrate existing passwords would be like:<div><br></div><div>BCrypt(SHA1(salt+password))</div><div><br></div><div> </div></div><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Nov 17, 2015 at 9:18 PM, Bruno Oliveira <span dir="ltr"><<a href="mailto:bruno@abstractj.org" target="_blank">bruno@abstractj.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">What you mean is migrate from badly broken legacies like:<div><br></div><div>MD5(salt + password)</div><div>SHA1(salt +password) </div><div><br></div><div>To BCrypt, Scrypt or PBKDF2? If yes, +1000000<br><br><div class="gmail_quote"><div><div class="h5"><div dir="ltr">On Tue, Nov 17, 2015 at 1:07 PM Kunal K <<a href="mailto:kunal@plivo.com" target="_blank">kunal@plivo.com</a>> wrote:<br></div></div></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div class="h5"><div dir="ltr">Hi all,<div><br></div><div>I would like to start a discussion on how to implement - <a href="https://issues.jboss.org/browse/KEYCLOAK-1900" target="_blank">https://issues.jboss.org/browse/KEYCLOAK-1900</a></div><div><br></div><div>I have a django web app and all of my users are in a postgres database with salted passwords hashed using SHA. I have been reading how I can use UserFederation to implement by own credential validation, but the drawback here would be that I'll have to keep maintaining my old database.</div><div><br></div><div>For starters, I was thinking of replacing all occurrences of Pbkdf2PasswordEncoder with an equivalent SHAPasswordEncoder, which is a very crude approach and I'm not sure if it will even work. After some bit of reading I saw this ticket - <a href="https://issues.jboss.org/browse/KEYCLOAK-1900" target="_blank">https://issues.jboss.org/browse/KEYCLOAK-1900</a></div><div><br></div><div>I would like to implement a custom hashing SPI and would love to get some pointers on how to go about it.</div><div><br></div><div>Thanks</div>
<div><div><br></div>-- <br><div><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div dir="ltr"><div><b style="font-size:small;font-family:tahoma,sans-serif">KUNAL KERKAR </b><font color="#666666" style="font-size:small;font-family:tahoma,sans-serif">| PRODUCT ENGINEER</font><br></div><div><div dir="ltr"><div style="font-size:small;font-family:arial"><div><span style="color:rgb(102,102,102);font-family:tahoma,sans-serif;font-size:13px;line-height:16.12px">Plivo, Inc. 340 Pine St, San Francisco - 94104, USA</span><font face="tahoma, sans-serif"><font color="#666666"><br></font></font></div><div><font face="tahoma, sans-serif"><font color="#666666">Web:</font> <a href="http://www.plivo.com/" style="color:rgb(17,85,204)" target="_blank">www.plivo.com</a> <font color="#666666">| Twitter:</font> <a href="http://twitter.com/plivo" style="color:rgb(17,85,204)" target="_blank">@plivo</a>, <a href="http://twitter.com/tsudot" style="color:rgb(17,85,204)" target="_blank">@tsudot</a></font></div><div><div dir="ltr" style="font-family:arial,sans-serif;font-size:12.8px"><div style="font-size:small;font-family:arial"><div><br></div><div><a href="https://www.plivo.com/sms-short-code/?utm=emailsig" style="color:rgb(17,85,204);font-family:tahoma,sans-serif" target="_blank">Free Incoming SMS for All US Short Codes – Get One Today!</a></div></div></div></div></div></div></div></div></div></div></div></div></div>
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</blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div dir="ltr"><div><b style="font-size:small;font-family:tahoma,sans-serif">KUNAL KERKAR </b><font color="#666666" style="font-size:small;font-family:tahoma,sans-serif">| PRODUCT ENGINEER</font><br></div><div><div dir="ltr"><div style="font-size:small;font-family:arial"><div><span style="color:rgb(102,102,102);font-family:tahoma,sans-serif;font-size:13px;line-height:16.1200008392334px">Plivo, Inc. 340 Pine St, San Francisco - 94104, USA</span><font face="tahoma, sans-serif"><font color="#666666"><br></font></font></div><div><font face="tahoma, sans-serif"><font color="#666666">Web:</font> <a href="http://www.plivo.com/" style="color:rgb(17,85,204)" target="_blank">www.plivo.com</a> <font color="#666666">| Twitter:</font> <a href="http://twitter.com/plivo" style="color:rgb(17,85,204)" target="_blank">@plivo</a>, <a href="http://twitter.com/tsudot" style="color:rgb(17,85,204)" target="_blank">@tsudot</a></font></div><div><div dir="ltr" style="font-family:arial,sans-serif;font-size:12.8000001907349px"><div style="font-size:small;font-family:arial"><div><br></div><div><a href="https://www.plivo.com/sms-short-code/?utm=emailsig" style="color:rgb(17,85,204);font-family:tahoma,sans-serif" target="_blank">Free Incoming SMS for All US Short Codes – Get One Today!</a></div></div></div></div></div></div></div></div></div></div></div></div></div>
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