Class SHA256Digest

java.lang.Object
- org.bouncycastle.crypto.digests.GeneralDigest
- - org.bouncycastle.crypto.digests.SHA256Digest

public class SHA256Digest

extends GeneralDigest

FIPS 180-2 implementation of SHA-256.

         block  word  digest
 SHA-1   512    32    160
 SHA-256 512    32    256
 SHA-384 1024   64    384
 SHA-512 1024   64    512

Constructor Summary
`SHA256Digest()` Standard constructor
`SHA256Digest(SHA256Digest t)` Copy constructor.

Method Summary
`int`	`doFinal(byte[] out, int outOff)`
`String`	`getAlgorithmName()`
`int`	`getDigestSize()`
`protected void`	`processBlock()`
`protected void`	`processLength(long bitLength)`
`protected void`	`processWord(byte[] in, int inOff)`
`void`	`reset()` reset the chaining variables

Methods inherited from class org.bouncycastle.crypto.digests.GeneralDigest
`finish`, `getByteLength`, `processBlock`, `processLength`, `processWord`, `reset`, `update`, `update`

public SHA256Digest()

Standard constructor

public SHA256Digest(SHA256Digest t)

Copy constructor. This will copy the state of the provided message digest.

public int doFinal(byte[] out,
                   int outOff)

Specified by:
doFinal in interface Digest

public String getAlgorithmName()

Specified by:
getAlgorithmName in interface Digest

public int getDigestSize()

Specified by:
getDigestSize in interface Digest

protected void processBlock()

Overrides:
processBlock in interface GeneralDigest

protected void processLength(long bitLength)

Overrides:
processLength in interface GeneralDigest

protected void processWord(byte[] in,
                           int inOff)

Overrides:
processWord in interface GeneralDigest

public void reset()

reset the chaining variables
Specified by:
reset in interface Digest
Overrides:
reset in interface GeneralDigest

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Constructor Summary