```
public interface EncryptionKeyMetadata
```
Light typedef over a ByteBuffer that indicates that the given bytes represent metadata about an encrypted data file's encryption key.
This is preferred over passing a ByteBuffer directly in order to be more explicit.

All Methods Static Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`java.nio.ByteBuffer`	`buffer()`	Opaque blob representing metadata about a file's encryption key.
`EncryptionKeyMetadata`	`copy()`
`static EncryptionKeyMetadata`	`empty()`

static final EncryptionKeyMetadata EMPTY

buffer
```
java.nio.ByteBuffer buffer()
```
Opaque blob representing metadata about a file's encryption key.

Interface EncryptionKeyMetadata