Digest (Bouncy Castle Library 1.68 API Specification)

All Known Subinterfaces:

ExtendedDigest, Xof

All Known Implementing Classes:

Blake2bDigest, Blake2sDigest, Blake2xsDigest, CSHAKEDigest, DSTU7564Digest, GeneralDigest, GOST3411_2012_256Digest, GOST3411_2012_512Digest, GOST3411_2012Digest, GOST3411Digest, Haraka256Digest, Haraka512Digest, HarakaBase, KeccakDigest, KMAC, LMSContext, LongDigest, MD2Digest, MD4Digest, MD5Digest, NonMemoableDigest, NullDigest, RIPEMD128Digest, RIPEMD160Digest, RIPEMD256Digest, RIPEMD320Digest, SHA1Digest, SHA224Digest, SHA256Digest, SHA384Digest, SHA3Digest, SHA512Digest, SHA512tDigest, SHAKEDigest, ShortenedDigest, SkeinDigest, SM3Digest, TigerDigest, WhirlpoolDigest
```
public interface Digest
```
interface that a message digest conforms to.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`int`	`doFinal(byte[] out, int outOff)`	close the digest, producing the final digest value.
`java.lang.String`	`getAlgorithmName()`	return the algorithm name
`int`	`getDigestSize()`	return the size, in bytes, of the digest produced by this message digest.
`void`	`reset()`	reset the digest back to it's initial state.
`void`	`update(byte in)`	update the message digest with a single byte.
`void`	`update(byte[] in, int inOff, int len)`	update the message digest with a block of bytes.

- Method Detail
  - getAlgorithmName
```
java.lang.String getAlgorithmName()
```
    return the algorithm name
    
    Returns:
    
    the algorithm name
  - getDigestSize
```
int getDigestSize()
```
    return the size, in bytes, of the digest produced by this message digest.
    
    Returns:
    
    the size, in bytes, of the digest produced by this message digest.
  - update
```
void update(byte in)
```
    update the message digest with a single byte.
    
    Parameters:
    
    in - the input byte to be entered.
  - update
```
void update(byte[] in,
            int inOff,
            int len)
```
    update the message digest with a block of bytes.
    
    Parameters:
    
    in - the byte array containing the data.
    
    inOff - the offset into the byte array where the data starts.
    
    len - the length of the data.
  - doFinal
```
int doFinal(byte[] out,
            int outOff)
```
    close the digest, producing the final digest value. The doFinal call leaves the digest reset.
    
    Parameters:
    
    out - the array the digest is to be copied into.
    
    outOff - the offset into the out array the digest is to start at.
  - reset
```
void reset()
```
    reset the digest back to it's initial state.