# Couldn't using Signature Algorithm RS256 **URL:** \ **Category:** JWT.io\ **Tags:** rs256\ **Created:** [June 7, 2018, 9:16am UTC](https://community.auth0.com/t/couldnt-using-signature-algorithm-rs256/12167 "2018-06-07T09:16:26Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![sunary](https://upload.wikimedia.org/wikipedia/commons/thumb/7/7c/User_font_awesome.svg/768px-User_font_awesome.svg.png) [@sunary](https://community.auth0.com/u/sunary)\ **Post date:** [June 7, 2018, 9:16am UTC](https://community.auth0.com/t/couldnt-using-signature-algorithm-rs256/12167/1 "2018-06-07T09:16:26Z")
I set JsonWebToken Signature Algorithm is RS256, but express-jwt lib and [jwt.io](http://jwt.io) dectect that is HS256? below is my token generated from [auth0.com](http://auth0.com): ```auto eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.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.txDyUmBs9WuRcaZKSTyrdZJRGH2Sy1vaGPH3uq_o5BQ ``` ---
**Author:** ![konrad.sopala](https://sea1.discourse-cdn.com/auth0/user_avatar/community.auth0.com/konrad.sopala/32/13516_2.png) [@konrad.sopala](https://community.auth0.com/u/konrad.sopala)\ **Post date:** [December 19, 2018, 11:21am UTC](https://community.auth0.com/t/couldnt-using-signature-algorithm-rs256/12167/3 "2018-12-19T11:21:22Z")
Hey @sunary! As it has been more than a few months since this topic was opened and there has been no reply or further information provided from the community as to the existence of the issue we would like to check if you are still facing the described challenge? We are more than happy to assist in any way! If the issue is still out there please let us know so we can create a new thread for better visibility, otherwise we’ll close this one in week’s time. Thank you! ---
**Author:** ![konrad.sopala](https://sea1.discourse-cdn.com/auth0/user_avatar/community.auth0.com/konrad.sopala/32/13516_2.png) [@konrad.sopala](https://community.auth0.com/u/konrad.sopala)\ **Post date:** [December 24, 2018, 5:00pm UTC](https://community.auth0.com/t/couldnt-using-signature-algorithm-rs256/12167/4 "2018-12-24T17:00:08Z")
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