---
title: attrSmimeCapabilities
framework: security
role: symbol
role_heading: Type Property
path: security/cmssignedattributes/attrsmimecapabilities
---

# attrSmimeCapabilities

Identify signature, encryption, and digest algorithms supported by the encoder.

## Declaration

```swift
static var attrSmimeCapabilities: CMSSignedAttributes { get }
```

## Discussion

Discussion Using this attribute doesn’t change the encoding. See RFC 2311: S/MIME Version 2 Message Specification section 2.5.2 for more information about the capabilities attribute.