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# CMSCertificateChainMode

Constants that can be set to specify what certificates to include in a signed message.

```
enum CMSCertificateChainMode
```

## Overview

Use these with the [`CMSEncoderSetCertificateChainMode(_:_:)`](/documentation/Security/CMSEncoderSetCertificateChainMode(_:_:)) function.

## Topics

### Constants

[`CMSCertificateChainMode.none`](/documentation/Security/CMSCertificateChainMode/none)

Don’t include any certificates.

[`CMSCertificateChainMode.signerOnly`](/documentation/Security/CMSCertificateChainMode/signerOnly)

Only include signer certificates.

[`CMSCertificateChainMode.chain`](/documentation/Security/CMSCertificateChainMode/chain)

Include the signer certificate chain up to but not including the root certificate.

[`CMSCertificateChainMode.chainWithRoot`](/documentation/Security/CMSCertificateChainMode/chainWithRoot)

Include the entire signer certificate chain, including the root certificate.

### Enumeration Cases

[`CMSCertificateChainMode.chainWithRootOrFail`](/documentation/Security/CMSCertificateChainMode/chainWithRootOrFail)


---

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