> For the complete documentation index, see [llms.txt](https://docs.elemitech.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.elemitech.com/callbacks.md).

# Callbacks

- [HMAC Signature Verification](https://docs.elemitech.com/callbacks/hmac-signature-verification.md): The section describes how the HMAC signature sent in the callback header OR in the redirect data can be verified
- [RSA Signature Verification](https://docs.elemitech.com/callbacks/rsa-signature-verification.md): The section describes how the RSA signature sent in the callback header can be verified. The signature is generated using RSA Signing. For verification to succeed, the public key is required.