---
title: "SecCertificateCopyValues(_:_:_:)"
framework: security
role: symbol
role_heading: Function
path: "security/seccertificatecopyvalues(_:_:_:)"
---

# SecCertificateCopyValues(_:_:_:)

Creates a dictionary that represents a certificate’s contents.

## Declaration

```swift
func SecCertificateCopyValues(_ certificate: SecCertificate, _ keys: CFArray?, _ error: UnsafeMutablePointer<Unmanaged<CFError>?>?) -> CFDictionary?
```

## Parameters

- `certificate`: The certificate from which values should be copied.
- `keys`: An array of string OID values, or NULL. If non-NULL, these OID values determine which values from the certificate to return. If NULL, all values are returned. Only OIDs that represent top-level keys in the returned dictionary can be specified. Unknown OIDs are ignored. See doc://com.apple.security/documentation/Security/certificate-oids for the list of known OIDs.
- `error`: A pointer to a doc://com.apple.documentation/documentation/CoreFoundation/CFError variable where an error object is stored upon failure. If not NULL, the caller is responsible for checking this variable and releasing the resulting object if it exists.

## Mentioned in

Getting Certificate Values

## Return Value

Return Value A dictionary containing the specified values from the certificate or NULL if an error occurs. In Objective-C, free this dictionary with a call to the CFRelease function when you are done with it.

## Discussion

Discussion Each entry in this dictionary is itself a dictionary with the keys described in Certificate Property Keys.