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# VZEFISignatureX509Certificate

A class that represents a Unified Extensible Firmware Interface (UEFI) signature based on an X.509 certificate.

```
@interface VZEFISignatureX509Certificate : VZEFISignature
```

## Overview

This class represents a signature entry containing a DER-encoded X.509 certificate. The Platform Key (PK), the Key Exchange Key (KEK)
database, and the allowed signature database (db) commonly use X.509 certificates.

## Topics

### Instance Properties

[`@property (readonly) SecCertificateRef certificate;`](/documentation/Virtualization/VZEFISignatureX509Certificate/certificate)

The X.509 certificate contained in this signature.

### Instance Methods

[`- (instancetype) initWithCertificate:(SecCertificateRef) certificate;`](/documentation/Virtualization/VZEFISignatureX509Certificate/initWithCertificate:)

Creates a signature from an X.509 certificate.

## See Also

[`class VZEFISignatureList`](/documentation/Virtualization/VZEFISignatureList)

A class that represents a Unified Extensible Firmware Interface (UEFI) signature list.

## Relationships

### Inherits From

[`VZEFISignature-c.class`](/documentation/Virtualization/VZEFISignature-c.class)

---

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