org.apache.poi.poifs.crypt.binaryrc4

Class BinaryRC4Encryptor

java.lang.Object

org.apache.poi.poifs.crypt.Encryptor

org.apache.poi.poifs.crypt.binaryrc4.BinaryRC4Encryptor

All Implemented Interfaces:

GenericRecord

public class BinaryRC4Encryptor
extends Encryptor

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected class	BinaryRC4Encryptor.BinaryRC4CipherOutputStream

Field Summary

Fields inherited from class org.apache.poi.poifs.crypt.Encryptor

DEFAULT_POIFS_ENTRY

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	BinaryRC4Encryptor()
protected	BinaryRC4Encryptor(BinaryRC4Encryptor other)

Method Summary

Modifier and Type	Method and Description
void	confirmPassword(java.lang.String password)
void	confirmPassword(java.lang.String password, byte[] keySpec, byte[] keySalt, byte[] verifier, byte[] verifierSalt, byte[] integritySalt)
BinaryRC4Encryptor	copy()
protected void	createEncryptionInfoEntry(DirectoryNode dir)
java.io.OutputStream	getDataStream(DirectoryNode dir) Return a output stream for encrypted data. (返回加密数据的输出流。)
BinaryRC4Encryptor.BinaryRC4CipherOutputStream	getDataStream(java.io.OutputStream stream, int initialOffset)
protected int	getKeySizeInBytes()
void	setChunkSize(int chunkSize) Sets the chunk size of the data stream. (设置数据流的块大小。)

Methods inherited from class org.apache.poi.poifs.crypt.Encryptor

getDataStream, getEncryptionInfo, getGenericProperties, getInstance, getSecretKey, setEncryptionInfo, setSecretKey

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.poi.common.usermodel.GenericRecord

getGenericChildren, getGenericRecordType

Constructor Detail

BinaryRC4Encryptor

protected BinaryRC4Encryptor()

BinaryRC4Encryptor

protected BinaryRC4Encryptor(BinaryRC4Encryptor other)

Method Detail

confirmPassword

public void confirmPassword(java.lang.String password)

Specified by:

confirmPassword in class Encryptor (类 Encryptor 中的 confirmPassword)

confirmPassword

public void confirmPassword(java.lang.String password,
                            byte[] keySpec,
                            byte[] keySalt,
                            byte[] verifier,
                            byte[] verifierSalt,
                            byte[] integritySalt)

Specified by:

confirmPassword in class Encryptor (类 Encryptor 中的 confirmPassword)

getDataStream

public java.io.OutputStream getDataStream(DirectoryNode dir)
                                   throws java.io.IOException,
                                          java.security.GeneralSecurityException

Description copied from class: Encryptor

Return a output stream for encrypted data. (返回加密数据的输出流。)

Specified by:

getDataStream in class Encryptor (类 Encryptor 中的 getDataStream)

Parameters:

dir - the node to write to (dir - 要写入的节点)

Returns:

encrypted stream (加密流)

Throws:

java.io.IOException (java.io.IOException)

java.security.GeneralSecurityException (java.security.GeneralSecurityException)

getDataStream

public BinaryRC4Encryptor.BinaryRC4CipherOutputStream getDataStream(java.io.OutputStream stream,
                                                                    int initialOffset)
                                                             throws java.io.IOException,
                                                                    java.security.GeneralSecurityException

Overrides:

getDataStream in class Encryptor

Throws:

java.io.IOException (java.io.IOException)

java.security.GeneralSecurityException (java.security.GeneralSecurityException)

getKeySizeInBytes

protected int getKeySizeInBytes()

createEncryptionInfoEntry

protected void createEncryptionInfoEntry(DirectoryNode dir)
                                  throws java.io.IOException

Throws:

java.io.IOException (java.io.IOException)

setChunkSize

public void setChunkSize(int chunkSize)

Description copied from class: Encryptor

Sets the chunk size of the data stream. Needs to be set before the data stream is requested. When not set, the implementation uses method specific default values (设置数据流的块大小。需要在请求数据流之前设置。未设置时，实现使用特定于方法的默认值)

Overrides:

setChunkSize in class Encryptor

Parameters:

chunkSize - the chunk size, i.e. the block size with the same encryption key (chunkSize - 块大小，即具有相同加密密钥的块大小)

copy

public BinaryRC4Encryptor copy()

Specified by:

copy in class Encryptor (在类 Encryptor 中复制)