com.arxanfintech.common.crypto.core.cryptohash

类 Keccak256

java.lang.Object

com.arxanfintech.common.crypto.core.cryptohash.DigestEngine

com.arxanfintech.common.crypto.core.cryptohash.Keccak256

所有已实现的接口:

Digest

public class Keccak256
extends DigestEngine

构造器概要

构造器

构造器和说明
Keccak256() Create the engine.

方法概要

限定符和类型	方法和说明
Digest	copy() Clone the current state.
protected Digest	copyState(com.arxanfintech.common.crypto.core.cryptohash.KeccakCore dst)
protected void	doInit() This function is called at object creation time; the implementation should use it to perform initialization tasks.
protected void	doPadding(byte[] out, int off) Perform the final padding and store the result in the provided buffer.
protected void	engineReset() Reset the hash algorithm state.
int	getBlockLength() Return the "block length" for the hash function.
int	getDigestLength() Get the natural hash function output length (in bytes).
protected void	processBlock(byte[] data) Process one block of data.
java.lang.String	toString() Get the display name for this function (e.g.

从类继承的方法 com.arxanfintech.common.crypto.core.cryptohash.DigestEngine

copyState, digest, digest, digest, flush, getBlockBuffer, getBlockCount, getInternalBlockLength, reset, update, update, update

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

构造器详细资料

Keccak256

public Keccak256()

Create the engine.

方法详细资料

copy

public Digest copy()

从接口复制的说明: Digest

Clone the current state. The returned object evolves independantly of this object.

返回:

the clone

getDigestLength

public int getDigestLength()

从接口复制的说明: Digest

Get the natural hash function output length (in bytes).

返回:

the digest output length (in bytes)

engineReset

protected void engineReset()

从类复制的说明: DigestEngine

Reset the hash algorithm state.

指定者:

engineReset 在类中 DigestEngine

processBlock

protected void processBlock(byte[] data)

从类复制的说明: DigestEngine

Process one block of data.

指定者:

processBlock 在类中 DigestEngine

参数:

data - the data block

doPadding

protected void doPadding(byte[] out,
                         int off)

从类复制的说明: DigestEngine

Perform the final padding and store the result in the provided buffer. This method shall call DigestEngine.flush() and then DigestEngine.update(byte) with the appropriate padding data in order to get the full input data.

指定者:

doPadding 在类中 DigestEngine

参数:

out - the output buffer

off - the output offset

doInit

protected void doInit()

从类复制的说明: DigestEngine

This function is called at object creation time; the implementation should use it to perform initialization tasks. After this method is called, the implementation should be ready to process data or meaningfully honour calls such as Digest.getDigestLength()

指定者:

doInit 在类中 DigestEngine

getBlockLength

public int getBlockLength()

从接口复制的说明: Digest

Return the "block length" for the hash function. This value is naturally defined for iterated hash functions (Merkle-Damgard). It is used in HMAC (that's what the HMAC specification names the "B" parameter).

If the function is "block-less" then this function may return -n where n is an integer such that the block length for HMAC ("B") will be inferred from the key length, by selecting the smallest multiple of n which is no smaller than the key length. For instance, for the Fugue-xxx hash functions, this function returns -4: the virtual block length B is the HMAC key length, rounded up to the next multiple of 4.

返回:

the internal block length (in bytes), or -n

copyState

protected Digest copyState(com.arxanfintech.common.crypto.core.cryptohash.KeccakCore dst)

toString

public java.lang.String toString()

从接口复制的说明: Digest

Get the display name for this function (e.g. "SHA-1" for SHA-1).

指定者:

toString 在接口中 Digest

覆盖:

toString 在类中 java.lang.Object

另请参阅:

Object