---
title: ecdsaSignatureMessageRFC4754SHA224
framework: security
role: symbol
role_heading: Type Property
path: security/seckeyalgorithm/ecdsasignaturemessagerfc4754sha224
---

# ecdsaSignatureMessageRFC4754SHA224

An algorithm for generating message signatures by calculating and signing the SHA224 message digest.

## Declaration

```swift
static let ecdsaSignatureMessageRFC4754SHA224: SecKeyAlgorithm
```