MessageExpansion (Bouncy Castle Library 1.84 API Specification)

All Known Implementing Classes:

XmdMessageExpansion
```
public interface MessageExpansion
```
The MessageExpansion interface defines a contract for expanding a message.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`byte[]`	`expandMessage(byte[] msg, byte[] dst, int lenInBytes)`	Expands the given message to match the specified length in bytes.

- Method Detail
  - expandMessage
```
byte[] expandMessage(byte[] msg,
                     byte[] dst,
                     int lenInBytes)
```
    Expands the given message to match the specified length in bytes.
    
    Parameters:
    
    msg - the original message to be expanded
    
    dst - domain separation tag
    
    lenInBytes - the desired length of the expanded message in bytes
    
    Returns:
    
    the expanded message as a byte array