Package org.bouncycastle.crypto.digests
Class SHA512Digest
- java.lang.Object
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- org.bouncycastle.crypto.digests.LongDigest
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- org.bouncycastle.crypto.digests.SHA512Digest
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- All Implemented Interfaces:
Digest,EncodableDigest,ExtendedDigest,Memoable
public class SHA512Digest extends LongDigest
FIPS 180-2 implementation of SHA-512.block word digest SHA-1 512 32 160 SHA-256 512 32 256 SHA-384 1024 64 384 SHA-512 1024 64 512
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Constructor Summary
Constructors Constructor Description SHA512Digest()Standard constructorSHA512Digest(byte[] encodedState)State constructor - create a digest initialised with the state of a previous one.SHA512Digest(SHA512Digest t)Copy constructor.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description Memoablecopy()Produce a copy of this object with its configuration and in its current state.intdoFinal(byte[] out, int outOff)close the digest, producing the final digest value.java.lang.StringgetAlgorithmName()return the algorithm nameintgetDigestSize()return the size, in bytes, of the digest produced by this message digest.byte[]getEncodedState()Return an encoded byte array for the digest's internal statevoidreset()reset the chaining variablesvoidreset(Memoable other)Restore a copied object state into this object.-
Methods inherited from class org.bouncycastle.crypto.digests.LongDigest
copyIn, finish, getByteLength, getEncodedStateSize, populateState, processBlock, processLength, processWord, restoreState, update, update
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Constructor Detail
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SHA512Digest
public SHA512Digest()
Standard constructor
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SHA512Digest
public SHA512Digest(SHA512Digest t)
Copy constructor. This will copy the state of the provided message digest.
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SHA512Digest
public SHA512Digest(byte[] encodedState)
State constructor - create a digest initialised with the state of a previous one.- Parameters:
encodedState- the encoded state from the originating digest.
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Method Detail
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getAlgorithmName
public java.lang.String getAlgorithmName()
Description copied from interface:Digestreturn the algorithm name- Returns:
- the algorithm name
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getDigestSize
public int getDigestSize()
Description copied from interface:Digestreturn 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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doFinal
public int doFinal(byte[] out, int outOff)Description copied from interface:Digestclose 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- Specified by:
resetin interfaceDigest- Overrides:
resetin classLongDigest
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copy
public Memoable copy()
Description copied from interface:MemoableProduce 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
public void reset(Memoable other)
Description copied from interface:MemoableRestore 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 originallycopiedfrom an object of the same type as this instance.
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getEncodedState
public byte[] getEncodedState()
Description copied from interface:EncodableDigestReturn an encoded byte array for the digest's internal state- Returns:
- an encoding of the digests internal state.
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