org.bouncycastle.crypto

Interface Digest

Known Subinterfaces:
ExtendedDigest
Known Implementing Classes:
CombinedHash, GeneralDigest, GOST3411Digest, LongDigest, MD2Digest, MD4Digest, MD5Digest, RIPEMD128Digest, RIPEMD160Digest, RIPEMD256Digest, RIPEMD320Digest, ShortenedDigest, SHA1Digest, SHA224Digest, SHA256Digest, SHA384Digest, SHA512Digest, TigerDigest, WhirlpoolDigest

public interface Digest

interface that a message digest conforms to.

Method Summary

int
doFinal(byte[] out, int outOff)
close the digest, producing the final digest value.
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 Details

doFinal

public 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.

getAlgorithmName

public String getAlgorithmName()
return the algorithm name
Returns:
the algorithm name

getDigestSize

public 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.

reset

public void reset()
reset the digest back to it's initial state.

update

public void update(byte in)
update the message digest with a single byte.
Parameters:
in - the input byte to be entered.

update

public 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.