Keccak256 (java-kit 2.2.2 API)

java.lang.Object
- java.security.MessageDigestSpi
- - java.security.MessageDigest
  - - org.brewchain.core.crypto.hash.DigestEngine
    - - org.brewchain.core.crypto.hash.Keccak256

所有已实现的接口:: Digest

public class Keccak256
extends DigestEngine

This class implements the Keccak-256 digest algorithm under the API.

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构造器概要

构造器
构造器和说明

Keccak256()
Create the engine.

构造器
构造器和说明
`Keccak256()` Create the engine.

方法概要

所有方法实例方法具体方法
限定符和类型	方法和说明
`Digest`	`copy()` Clone the current state.
`protected Digest`	`copyState(org.brewchain.core.crypto.hash.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 byte[]`	`engineDigest()`
`int`	`engineGetDigestLength()`
`protected void`	`engineReset()` Reset the hash algorithm state.
`protected void`	`engineUpdate(byte arg0)`
`protected void`	`engineUpdate(byte[] arg0, int arg1, int arg2)`
`int`	`getBlockLength()` Return the "block length" for the hash function.
`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 org.brewchain.core.crypto.hash.DigestEngine
copyState, digest, digest, digest, flush, getBlockBuffer, getBlockCount, getInternalBlockLength, reset, update, update, update

从类继承的方法 java.security.MessageDigest
clone, getAlgorithm, getDigestLength, getInstance, getInstance, getInstance, getProvider, isEqual, update

从类继承的方法 java.security.MessageDigestSpi
engineDigest, engineUpdate

从类继承的方法 java.lang.Object
equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

从接口继承的方法 org.brewchain.core.crypto.hash.Digest
getDigestLength

- 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
  - engineGetDigestLength
```
public int engineGetDigestLength()
```
    覆盖:
    
    engineGetDigestLength 在类中 java.security.MessageDigestSpi
  - engineDigest
```
protected byte[] engineDigest()
```
    指定者:
    
    engineDigest 在类中 java.security.MessageDigestSpi
  - engineUpdate
```
protected void engineUpdate(byte arg0)
```
    指定者:
    
    engineUpdate 在类中 java.security.MessageDigestSpi
  - engineUpdate
```
protected void engineUpdate(byte[] arg0,
                            int arg1,
                            int arg2)
```
    指定者:
    
    engineUpdate 在类中 java.security.MessageDigestSpi
  - 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
    
    另请参阅:
    
    org.brewchain.core.crypto.fok.cryptohash.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
    
    另请参阅:
    
    org.brewchain.core.crypto.fok.cryptohash.DigestEngine
  - 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
    
    另请参阅:
    
    org.brewchain.core.crypto.fok.cryptohash.DigestEngine
  - 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 MessageDigestSpi.engineGetDigestLength()
    
    指定者:
    
    doInit 在类中 DigestEngine
    
    另请参阅:
    
    org.brewchain.core.crypto.fok.cryptohash.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
    
    另请参阅:
    
    org.brewchain.core.crypto.fok.cryptohash.Digest
  - copyState
```
protected Digest copyState(org.brewchain.core.crypto.hash.KeccakCore dst)
```
    另请参阅:
    
    org.brewchain.core.crypto.fok.cryptohash.DigestEngine
  - 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.security.MessageDigest
    
    另请参阅:
    
    org.brewchain.core.crypto.fok.cryptohash.Digest

类 Keccak256

构造器概要

方法概要

从类继承的方法 org.brewchain.core.crypto.hash.DigestEngine

从类继承的方法 java.security.MessageDigest

从类继承的方法 java.security.MessageDigestSpi

从类继承的方法 java.lang.Object

从接口继承的方法 org.brewchain.core.crypto.hash.Digest

构造器详细资料

Keccak256

方法详细资料

copy

engineGetDigestLength

engineDigest

engineUpdate

engineUpdate

engineReset

processBlock

doPadding

doInit

getBlockLength

copyState

toString