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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

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

Don’t include any certificates.

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

Only include signer certificates.

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

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

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

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

### Enumeration Cases

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

## Relationships

### Conforms To

[`BitwiseCopyable`](/documentation/Swift/BitwiseCopyable)

[`Hashable`](/documentation/Swift/Hashable)

[`RawRepresentable`](/documentation/Swift/RawRepresentable)

[`Equatable`](/documentation/Swift/Equatable)

[`SendableMetatype`](/documentation/Swift/SendableMetatype)

[`Sendable`](/documentation/Swift/Sendable)

---

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