org.openeuler.com.sun.crypto.provider

类 HmacCore

java.lang.Object

javax.crypto.MacSpi

org.openeuler.com.sun.crypto.provider.HmacCore

所有已实现的接口:

Cloneable

直接已知子类:

HmacCore.HmacSM3

abstract class HmacCore
extends MacSpi
implements Cloneable

嵌套类概要

嵌套类

限定符和类型	类和说明
static class	HmacCore.HmacSM3

字段概要

字段

限定符和类型	字段和说明
private int	blockLen
private boolean	first
private byte[]	k_ipad
private byte[]	k_opad
private MessageDigest	md

构造器概要

构造器

构造器和说明
HmacCore(MessageDigest md, int bl) Standard constructor, creates a new HmacCore instance using the specified MessageDigest object.
HmacCore(String digestAlgorithm, int bl) Standard constructor, creates a new HmacCore instance instantiating a MessageDigest of the specified name.

方法概要

限定符和类型	方法和说明
Object	clone()
protected byte[]	engineDoFinal() Completes the HMAC computation and resets the HMAC for further use, maintaining the secret key that the HMAC was initialized with.
protected int	engineGetMacLength() Returns the length of the HMAC in bytes.
protected void	engineInit(Key key, AlgorithmParameterSpec params) Initializes the HMAC with the given secret key and algorithm parameters.
protected void	engineReset() Resets the HMAC for further use, maintaining the secret key that the HMAC was initialized with.
protected void	engineUpdate(byte input) Processes the given byte.
protected void	engineUpdate(byte[] input, int offset, int len) Processes the first len bytes in input, starting at offset.
protected void	engineUpdate(ByteBuffer input) Processes the input.remaining() bytes in the ByteBuffer input.

从类继承的方法 java.lang.Object

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

字段详细资料

md

private MessageDigest md

k_ipad

private byte[] k_ipad

k_opad

private byte[] k_opad

first

private boolean first

blockLen

private final int blockLen

构造器详细资料

HmacCore

HmacCore(MessageDigest md,
         int bl)

Standard constructor, creates a new HmacCore instance using the specified MessageDigest object.

HmacCore

HmacCore(String digestAlgorithm,
         int bl)
  throws NoSuchAlgorithmException

Standard constructor, creates a new HmacCore instance instantiating a MessageDigest of the specified name.

抛出:

NoSuchAlgorithmException

方法详细资料

engineGetMacLength

protected int engineGetMacLength()

Returns the length of the HMAC in bytes.

指定者:

engineGetMacLength 在类中 MacSpi

返回:

the HMAC length in bytes.

engineInit

protected void engineInit(Key key,
                          AlgorithmParameterSpec params)
                   throws InvalidKeyException,
                          InvalidAlgorithmParameterException

Initializes the HMAC with the given secret key and algorithm parameters.

指定者:

engineInit 在类中 MacSpi

参数:

key - the secret key.

params - the algorithm parameters.

抛出:

InvalidKeyException - if the given key is inappropriate for initializing this MAC.

InvalidAlgorithmParameterException - if the given algorithm parameters are inappropriate for this MAC.

engineUpdate

protected void engineUpdate(byte input)

Processes the given byte.

指定者:

engineUpdate 在类中 MacSpi

参数:

input - the input byte to be processed.

engineUpdate

protected void engineUpdate(byte[] input,
                            int offset,
                            int len)

Processes the first len bytes in input, starting at offset.

指定者:

engineUpdate 在类中 MacSpi

参数:

input - the input buffer.

offset - the offset in input where the input starts.

len - the number of bytes to process.

engineUpdate

protected void engineUpdate(ByteBuffer input)

Processes the input.remaining() bytes in the ByteBuffer input.

覆盖:

engineUpdate 在类中 MacSpi

参数:

input - the input byte buffer.

engineDoFinal

protected byte[] engineDoFinal()

Completes the HMAC computation and resets the HMAC for further use, maintaining the secret key that the HMAC was initialized with.

指定者:

engineDoFinal 在类中 MacSpi

返回:

the HMAC result.

engineReset

protected void engineReset()

Resets the HMAC for further use, maintaining the secret key that the HMAC was initialized with.

指定者:

engineReset 在类中 MacSpi

clone

public Object clone()
             throws CloneNotSupportedException

覆盖:

clone 在类中 MacSpi

抛出:

CloneNotSupportedException