org.bouncycastle.crypto.hash2curve

Interface MessageExpansion

All Known Implementing Classes:

XmdMessageExpansion

public interface MessageExpansion

The MessageExpansion interface defines a contract for expanding a message.

Method Summary

Modifier and Type	Method and 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