Getting Started with REST {#platform}
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26.02.01
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![](/content/dam/documentation/cybs/en-us/topics/reference/notes/doc-relnotes/images/new-15x75.svg/jcr:content/renditions/original) Added new section that explains how to migrate from HTTP signature messaging to JWT messaging using a shared secret key pair. See [Set Up a JSON Web Token Message Using Shared Secret Keys](https://developer.cybersource.com/docs/cybs/en-us/platform/developer/all/rest/rest-getting-started/restgs-jwt-shared-secret-intro.md "").  
![](/content/dam/documentation/cybs/en-us/topics/reference/notes/doc-relnotes/images/new-15x75.svg/jcr:content/renditions/original) Added a warning note with the deprecation deadline for HTTP signature messaging. See [Set Up an HTTP Signature Message \[DEPRECATING\]](https://developer.cybersource.com/docs/cybs/en-us/platform/developer/all/rest/rest-getting-started/restgs-http-message-intro.md "").