anon.crypto

Class XMLEncryption

java.lang.Object

anon.crypto.XMLEncryption

public final class XMLEncryption
extends java.lang.Object

Field Summary

Fields

Modifier and Type	Field and Description
private static int	MIN_ITERATIONS
private static int	SALT_SIZE
static java.lang.String	XML_ELEMENT_NAME

Constructor Summary

Constructors

Modifier	Constructor and Description
private	XMLEncryption()

Method Summary

Modifier and Type	Method and Description
private static byte[]	codeDataCBCwithHMAC(boolean encrypt, byte[] barInput, mybouncycastle.org.bouncycastle.crypto.CipherParameters encKey, mybouncycastle.org.bouncycastle.crypto.CipherParameters macKey) The part that is the same for encryption and decryption..
private static byte[]	codeDataCTS(boolean encrypt, byte[] barInput, mybouncycastle.org.bouncycastle.crypto.CipherParameters params) The part that is the same for encryption and decryption..
static org.w3c.dom.Element	decryptElement(org.w3c.dom.Element elemCrypt, IMiscPasswordReader a_passwordReader)
static org.w3c.dom.Element	decryptElement(org.w3c.dom.Element elemCrypt, java.lang.String password) Decrypts an XML element
static boolean	encryptElement(org.w3c.dom.Element elemPlain, MyRSAPublicKey publicKey) Encrypts an Element using a public key.
static org.w3c.dom.Element	encryptElement(org.w3c.dom.Element elemPlain, java.lang.String password) Encrypts an element and all its children using PKCS#12 and the given password.
private static mybouncycastle.org.bouncycastle.crypto.CipherParameters	generatePBEKey(java.lang.String password, byte[] kSalt) Generates a key from a password.
static org.w3c.dom.Node	getEncryptedElement(org.w3c.dom.Element elemPlain, MyRSAPublicKey publicKey) Returns a node which is the encrypted version of elemPlain.

Methods inherited from class java.lang.Object

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

Field Detail

XML_ELEMENT_NAME

public static final java.lang.String XML_ELEMENT_NAME

See Also:

Constant Field Values

SALT_SIZE

private static final int SALT_SIZE

See Also:

Constant Field Values

MIN_ITERATIONS

private static final int MIN_ITERATIONS

See Also:

Constant Field Values

Constructor Detail

XMLEncryption

private XMLEncryption()

Method Detail

encryptElement

public static org.w3c.dom.Element encryptElement(org.w3c.dom.Element elemPlain,
                                                 java.lang.String password)
                                          throws java.lang.Exception

Encrypts an element and all its children using PKCS#12 and the given password. The encrypted Element replaces the plaintext Element inside its OwnerDocument. Note: The document Element cannot be encrypted using this function. For information on the XML encryption standard see also http://www.w3.org/TR/xmlenc-core/

Parameters:

elemPlain - Element to be encrypted (not the DocumentElement!)

password - String a password

Returns:

Element a pointer to the encrypted element

Throws:

java.lang.Exception

generatePBEKey

private static mybouncycastle.org.bouncycastle.crypto.CipherParameters generatePBEKey(java.lang.String password,
                                                                                      byte[] kSalt)

Generates a key from a password.

Parameters:

password - String password

kSalt - byte[] random salt

Returns:

the Key with IV

codeDataCTS

private static byte[] codeDataCTS(boolean encrypt,
                                  byte[] barInput,
                                  mybouncycastle.org.bouncycastle.crypto.CipherParameters params)
                           throws java.lang.Exception

The part that is the same for encryption and decryption..

Parameters:

encrypt - boolean true=encrypt, false=decrypt

barInput - byte[] input plain or ciphertext

params - the key

Returns:

byte[]

Throws:

java.lang.Exception

codeDataCBCwithHMAC

private static byte[] codeDataCBCwithHMAC(boolean encrypt,
                                          byte[] barInput,
                                          mybouncycastle.org.bouncycastle.crypto.CipherParameters encKey,
                                          mybouncycastle.org.bouncycastle.crypto.CipherParameters macKey)
                                   throws java.lang.Exception

The part that is the same for encryption and decryption..

Parameters:

encrypt - boolean true=encrypt, false=decrypt

barInput - byte[] input plain or ciphertext

params - the key

Returns:

byte[]

Throws:

java.lang.Exception

decryptElement

public static org.w3c.dom.Element decryptElement(org.w3c.dom.Element elemCrypt,
                                                 java.lang.String password)
                                          throws java.lang.Exception

Decrypts an XML element

Parameters:

elemCrypt - Element

password - String

Returns:

Element

Throws:

java.lang.Exception

decryptElement

public static org.w3c.dom.Element decryptElement(org.w3c.dom.Element elemCrypt,
                                                 IMiscPasswordReader a_passwordReader)
                                          throws java.lang.Exception

Throws:

java.lang.Exception

encryptElement

public static boolean encryptElement(org.w3c.dom.Element elemPlain,
                                     MyRSAPublicKey publicKey)

Encrypts an Element using a public key. The element and all of its content is replaced by the encryption. The resulting encrypted xml struct is as follows: ... ...

getEncryptedElement

public static org.w3c.dom.Node getEncryptedElement(org.w3c.dom.Element elemPlain,
                                                   MyRSAPublicKey publicKey)

Returns a node which is the encrypted version of elemPlain.

Parameters:

elemPlain -

publicKey -

Returns:

the encrypted Element, or null if an error occured