# External SSO unable to get signature match

**URL:** <https://meta.discourse.org/t/external-sso-unable-to-get-signature-match/174155>\
**Category:** SSO\
**Created:** [December 23, 2020, 9:17pm UTC](https://meta.discourse.org/t/external-sso-unable-to-get-signature-match/174155 "2020-12-23T21:17:03Z")\
**Posts on this page:** 1\
**Showing post:** 3

<div class="post-metadata">

**Author:** ![James\_Hope](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/james_hope/32/204225_2.png) [@James\_Hope](https://meta.discourse.org/u/James_Hope)\
**Post date:** [December 24, 2020, 11:01pm UTC](https://meta.discourse.org/t/external-sso-unable-to-get-signature-match/174155/3 "2020-12-24T23:01:39Z")

</div>

Whilst there are some differences in the preparation of the payload for the HMAC function this code fails with the same issue that the signatures don’t match.

---

_[View the full topic](https://meta.discourse.org/t/external-sso-unable-to-get-signature-match/174155)._