---
title: compressionBlockSize
framework: applearchive
role: symbol
role_heading: Instance Property
path: applearchive/archiveencryptioncontext/compressionblocksize
---

# compressionBlockSize

The compression block size that defines the size of the blocks, in bytes, that the context splits data into.

## Declaration

```swift
var compressionBlockSize: Int { get set }
```

## See Also

### Getting and setting encryption context properties

- [decryptAttributes()](applearchive/archiveencryptioncontext/decryptattributes().md)
- [archiveIdentifier](applearchive/archiveencryptioncontext/archiveidentifier.md)
- [authData](applearchive/archiveencryptioncontext/authdata.md)
- [checksumMode](applearchive/archiveencryptioncontext/checksummode-swift.property.md)
- [ArchiveEncryptionContext.ChecksumMode](applearchive/archiveencryptioncontext/checksummode-swift.struct.md)
- [containerSize](applearchive/archiveencryptioncontext/containersize.md)
- [encryptionMode](applearchive/archiveencryptioncontext/encryptionmode-swift.property.md)
- [ArchiveEncryptionContext.EncryptionMode](applearchive/archiveencryptioncontext/encryptionmode-swift.struct.md)
- [compressionAlgorithm](applearchive/archiveencryptioncontext/compressionalgorithm.md)
- [ArchiveCompression](applearchive/archivecompression.md)
- [paddingSize](applearchive/archiveencryptioncontext/paddingsize.md)
- [profile](applearchive/archiveencryptioncontext/profile-swift.property.md)
- [ArchiveEncryptionContext.Profile](applearchive/archiveencryptioncontext/profile-swift.struct.md)
- [rawSize](applearchive/archiveencryptioncontext/rawsize.md)
- [signatureEncryptionKey](applearchive/archiveencryptioncontext/signatureencryptionkey.md)