# SignatureType Enum

> Enumeration to specify fields to display as part of signature appearance.

- Product: Adobe PDF Library 21
- Language: Modern C++
- Version: 21.4.0
- HTML page: https://docs.datalogics.com/apdfl21/ModernCPP/21.4.0/enum/SignatureType
- Version index: https://docs.datalogics.com/apdfl21/ModernCPP/21.4.0/llms.txt

**Namespace:** `datalogics_interface`

## Description

Enumeration to specify fields to display as part of signature appearance.

## Values

- `CMS = 0`: CMS-based digital signature.
- `RFC3161 = 1`: RFC3161 trusted timestamp.
- `PADES = 2`: PAdES baseline digital signature.