---
title: ecdsaSignatureDigestRFC4754SHA1
framework: security
role: symbol
role_heading: Type Property
path: security/seckeyalgorithm/ecdsasignaturedigestrfc4754sha1
---

# ecdsaSignatureDigestRFC4754SHA1

An algorithm for generating signatures of SHA1 message digests.

## Declaration

```swift
static let ecdsaSignatureDigestRFC4754SHA1: SecKeyAlgorithm
```