org.apache.poi.poifs.crypt.cryptoapi

Class CryptoAPIEncryptor

java.lang.Object

org.apache.poi.poifs.crypt.Encryptor

org.apache.poi.poifs.crypt.cryptoapi.CryptoAPIEncryptor

public class CryptoAPIEncryptor
extends Encryptor

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)
java.io.OutputStream	getDataStream(DirectoryNode dir) Encrypt the Document-/SummaryInformation and other optionally streams.
javax.crypto.Cipher	initCipherForBlock(javax.crypto.Cipher cipher, int block) Initializes a cipher object for a given block index for encryption

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

getDataStream, getDataStream, getInstance, getSecretKey

Methods inherited from class java.lang.Object

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

Method Detail

confirmPassword

public void confirmPassword(java.lang.String password)

Specified by:

confirmPassword in class Encryptor

confirmPassword

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

Specified by:

confirmPassword in class Encryptor

initCipherForBlock

public javax.crypto.Cipher initCipherForBlock(javax.crypto.Cipher cipher,
                                              int block)
                                       throws java.security.GeneralSecurityException

Initializes a cipher object for a given block index for encryption

Parameters:

cipher - may be null, otherwise the given instance is reset to the new block index

block - the block index, e.g. the persist/slide id (hslf)

Returns:

a new cipher object, if cipher was null, otherwise the reinitialized cipher

Throws:

java.security.GeneralSecurityException

getDataStream

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

Encrypt the Document-/SummaryInformation and other optionally streams. Opposed to other crypto modes, cryptoapi is record based and can't be used to stream-encrypt a whole file

Specified by:

getDataStream in class Encryptor

Parameters:

dir - the node to write to

Returns:

encrypted stream

Throws:

java.io.IOException

java.security.GeneralSecurityException

See Also:

2.3.5.4 RC4 CryptoAPI Encrypted Summary Stream