| package org.bouncycastle.crypto; |
| |
| /** |
| * interface that a message digest conforms to. |
| */ |
| public interface Digest |
| { |
| /** |
| * return the algorithm name |
| * |
| * @return the algorithm name |
| */ |
| public String getAlgorithmName(); |
| |
| /** |
| * return the size, in bytes, of the digest produced by this message digest. |
| * |
| * @return the size, in bytes, of the digest produced by this message digest. |
| */ |
| public int getDigestSize(); |
| |
| /** |
| * update the message digest with a single byte. |
| * |
| * @param in the input byte to be entered. |
| */ |
| public void update(byte in); |
| |
| /** |
| * update the message digest with a block of bytes. |
| * |
| * @param in the byte array containing the data. |
| * @param inOff the offset into the byte array where the data starts. |
| * @param len the length of the data. |
| */ |
| public void update(byte[] in, int inOff, int len); |
| |
| /** |
| * close the digest, producing the final digest value. The doFinal |
| * call leaves the digest reset. |
| * |
| * @param out the array the digest is to be copied into. |
| * @param outOff the offset into the out array the digest is to start at. |
| */ |
| public int doFinal(byte[] out, int outOff); |
| |
| /** |
| * reset the digest back to it's initial state. |
| */ |
| public void reset(); |
| } |