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

# sec_protocol_metadata_challenge_parameters_are_equal(_:_:)

## Declaration

```swift
func sec_protocol_metadata_challenge_parameters_are_equal(_ metadataA: sec_protocol_metadata_t, _ metadataB: sec_protocol_metadata_t) -> Bool
```

## Parameters

- `metadataA`: A sec_protocol_metadata_t instance.
- `metadataB`: A sec_protocol_metadata_t instance.

## Return Value

Return Value Returns true if both metadata values have the same challenge parameters.

## Discussion

Discussion Compare challenge-relevant information for two sec_protocol_metadata instances.  This comparison includes all information relevant to a challenge request, including:  distinguished names, signature algorithms, and supported certificate types.  See Section 7.4.4 of RFC5246 for more details.