Package org.bouncycastle.crypto.digests
Class MD4Digest
java.lang.Object
org.bouncycastle.crypto.digests.GeneralDigest
org.bouncycastle.crypto.digests.MD4Digest
- All Implemented Interfaces:
Digest
,ExtendedDigest
,Memoable
implementation of MD4 as RFC 1320 by R. Rivest, MIT Laboratory for
Computer Science and RSA Data Security, Inc.
NOTE: This algorithm is only included for backwards compatability with legacy applications, it's not secure, don't use it for anything new!
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Field Summary
Fields inherited from class org.bouncycastle.crypto.digests.GeneralDigest
purpose
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Constructor Summary
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Method Summary
Modifier and TypeMethodDescriptioncopy()
Produce a copy of this object with its configuration and in its current state.protected CryptoServiceProperties
int
doFinal
(byte[] out, int outOff) close the digest, producing the final digest value.return the algorithm nameint
return the size, in bytes, of the digest produced by this message digest.protected void
protected void
processLength
(long bitLength) protected void
processWord
(byte[] in, int inOff) void
reset()
reset the chaining variables to the IV values.void
Restore a copied object state into this object.Methods inherited from class org.bouncycastle.crypto.digests.GeneralDigest
copyIn, finish, getByteLength, populateState, update, update
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Constructor Details
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Method Details
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getAlgorithmName
Description copied from interface:Digest
return the algorithm name- Returns:
- the algorithm name
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getDigestSize
public int getDigestSize()Description copied from interface:Digest
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.
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processWord
protected void processWord(byte[] in, int inOff) - Specified by:
processWord
in classGeneralDigest
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processLength
protected void processLength(long bitLength) - Specified by:
processLength
in classGeneralDigest
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doFinal
public int doFinal(byte[] out, int outOff) Description copied from interface:Digest
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.
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reset
public void reset()reset the chaining variables to the IV values.- Specified by:
reset
in interfaceDigest
- Overrides:
reset
in classGeneralDigest
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processBlock
protected void processBlock()- Specified by:
processBlock
in classGeneralDigest
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copy
Description copied from interface:Memoable
Produce a copy of this object with its configuration and in its current state.The returned object may be used simply to store the state, or may be used as a similar object starting from the copied state.
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reset
Description copied from interface:Memoable
Restore a copied object state into this object.Implementations of this method should try to avoid or minimise memory allocation to perform the reset.
- Parameters:
other
- an object originallycopied
from an object of the same type as this instance.
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cryptoServiceProperties
- Specified by:
cryptoServiceProperties
in classGeneralDigest
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