| package org.bouncycastle.crypto.digests; |
| |
| import java.io.ByteArrayOutputStream; |
| |
| import org.bouncycastle.crypto.Digest; |
| |
| |
| public class NullDigest |
| implements Digest |
| { |
| private ByteArrayOutputStream bOut = new ByteArrayOutputStream(); |
| |
| public String getAlgorithmName() |
| { |
| return "NULL"; |
| } |
| |
| public int getDigestSize() |
| { |
| return bOut.size(); |
| } |
| |
| public void update(byte in) |
| { |
| bOut.write(in); |
| } |
| |
| public void update(byte[] in, int inOff, int len) |
| { |
| bOut.write(in, inOff, len); |
| } |
| |
| public int doFinal(byte[] out, int outOff) |
| { |
| byte[] res = bOut.toByteArray(); |
| |
| System.arraycopy(res, 0, out, outOff, res.length); |
| |
| reset(); |
| |
| return res.length; |
| } |
| |
| public void reset() |
| { |
| bOut.reset(); |
| } |
| } |