<!--
{
  "documentType" : "article",
  "framework" : "CoreFoundation",
  "identifier" : "/documentation/CoreFoundation/cfstream-property-ssl-settings-constants",
  "metadataVersion" : "0.1.0",
  "role" : "collectionGroup",
  "title" : "CFStream Property SSL Settings Constants"
}
-->

# CFStream Property SSL Settings Constants

Constants for use in a `CFDictionary` object that is the value of the `kCFStreamPropertySSLSettings` stream property key.

## Discussion

This enumeration defines the constants for keys in a `CFDictionary` object that is the value of the kCFStreamPropertySSLSettings key.

## Topics

### Constants

  <doc://com.apple.documentation/documentation/CFNetwork/kCFStreamSSLLevel>

  <doc://com.apple.documentation/documentation/CFNetwork/kCFStreamSSLAllowsExpiredCertificates>

  <doc://com.apple.documentation/documentation/CFNetwork/kCFStreamSSLAllowsExpiredRoots>

  <doc://com.apple.documentation/documentation/CFNetwork/kCFStreamSSLAllowsAnyRoot>

  <doc://com.apple.documentation/documentation/CFNetwork/kCFStreamSSLValidatesCertificateChain>

  <doc://com.apple.documentation/documentation/CFNetwork/kCFStreamSSLPeerName>

  <doc://com.apple.documentation/documentation/CFNetwork/kCFStreamSSLCertificates>

  <doc://com.apple.documentation/documentation/CFNetwork/kCFStreamSSLIsServer>


---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)