---
title: bits256
framework: cryptokit
role: symbol
role_heading: Type Property
path: cryptokit/symmetrickeysize/bits256
---

# bits256

A size of 256 bits.

## Declaration

```swift
static var bits256: SymmetricKeySize { get }
```

## See Also

### Using standard key lengths

- [bits128](cryptokit/symmetrickeysize/bits128.md)
- [bits192](cryptokit/symmetrickeysize/bits192.md)