---
title: errSecCSUnsupportedDigestAlgorithm
framework: security
role: symbol
role_heading: Global Variable
path: security/errseccsunsupporteddigestalgorithm
---

# errSecCSUnsupportedDigestAlgorithm

The signature digest algorithm(s) specified are not supported.

## Declaration

```swift
var errSecCSUnsupportedDigestAlgorithm: OSStatus { get }
```