de.hfu.anybeam.networkCore

Enum EncryptionType

java.lang.Object

java.lang.Enum<EncryptionType>

de.hfu.anybeam.networkCore.EncryptionType

All Implemented Interfaces:

java.io.Serializable, java.lang.Comparable<EncryptionType>

public enum EncryptionType
extends java.lang.Enum<EncryptionType>

An enum containng all possible encryption types and useful functions.

Since:

1.0

Version:

1.0

Author:

chrwuer

Enum Constant Summary

Enum Constants

Enum Constant and Description
AES128
AES256
DES
NONE

Method Summary

Methods

Modifier and Type	Method and Description
javax.crypto.Cipher	createCipher() Creates a Cipher for this EncryptionType.
java.lang.String	getEncryptionName() Returns a technical name of this encryption or null if the EncryptionType is NONE.
java.lang.String	getHumanEncryptionName() Returns a human readable name of this encryption or null if the EncryptionType is NONE.
java.lang.String	getHumanReadableKey(byte[] key) Generates a human readable String representing the key.
int	getKeyLength() Returns the key length for this EncryptionType in bit.
int	getKeyLengthByte() Returns the key length for this EncryptionType in byte.
byte[]	getRandomSecretKey() Generates a random secret key using KeyGenerator matching the needs of a key this EncryptionType.
byte[]	getSecretKeyFromHumanReadableKey(java.lang.String password) Generates a key from a human readable String created with getHumanReadableKey(byte[])
byte[]	getSecretKeyFromPassword(java.lang.String password) Generates a random secret key using the password's SHA-1 hash matching the needs of a key this EncryptionType.
javax.crypto.spec.SecretKeySpec	getSecretKeySpec(byte[] rawKeyData) Creates a SecretKeySpec from the given bytes.
static EncryptionType	valueOf(java.lang.String name) Returns the enum constant of this type with the specified name.
static EncryptionType[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

compareTo, equals, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

DES

public static final EncryptionType DES

AES128

public static final EncryptionType AES128

AES256

public static final EncryptionType AES256

NONE

public static final EncryptionType NONE

Method Detail

values

public static EncryptionType[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (EncryptionType c : EncryptionType.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static EncryptionType valueOf(java.lang.String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

java.lang.IllegalArgumentException - if this enum type has no constant with the specified name

java.lang.NullPointerException - if the argument is null

getHumanEncryptionName

public java.lang.String getHumanEncryptionName()

Returns a human readable name of this encryption or null if the EncryptionType is NONE.

Returns:

a human readable name of this encryption or null if the EncryptionType is NONE

getEncryptionName

public java.lang.String getEncryptionName()

Returns a technical name of this encryption or null if the EncryptionType is NONE.

Returns:

a technical name of this encryption or null if the EncryptionType is NONE

getKeyLength

public int getKeyLength()

Returns the key length for this EncryptionType in bit.

Returns:

the key length for this EncryptionType in bit or 0 if this EncryptionType is NONE

getKeyLengthByte

public int getKeyLengthByte()

Returns the key length for this EncryptionType in byte.

Returns:

the key length for this EncryptionType in byte or 0 if this EncryptionType is NONE

getRandomSecretKey

public byte[] getRandomSecretKey()
                          throws java.lang.Exception

Generates a random secret key using KeyGenerator matching the needs of a key this EncryptionType.

Returns:

a random secret key using KeyGenerator matching the needs of a key this EncryptionType

Throws:

java.lang.Exception

getSecretKeyFromPassword

public byte[] getSecretKeyFromPassword(java.lang.String password)

Generates a random secret key using the password's SHA-1 hash matching the needs of a key this EncryptionType.

Parameters:

password - the password from which the should be created

Returns:

a random secret key using the password's SHA-1 hash matching the needs of a key this EncryptionType

createCipher

public javax.crypto.Cipher createCipher()

Creates a Cipher for this EncryptionType.

Returns:

a Cipher for this EncryptionType or null if this EncryptionType is NONE

Throws:

java.security.NoSuchAlgorithmException

javax.crypto.NoSuchPaddingException

getSecretKeySpec

public javax.crypto.spec.SecretKeySpec getSecretKeySpec(byte[] rawKeyData)

Creates a SecretKeySpec from the given bytes. The length of the given byte array must match the needed length for this EncryptionType.

Parameters:

rawKeyData -

Returns:

a SecretKeySpec from the given bytes

See Also:

getKeyLengthByte(), getKeyLength()

getHumanReadableKey

public java.lang.String getHumanReadableKey(byte[] key)

Generates a human readable String representing the key.

Parameters:

key - the key that should be converted

Returns:

a String representing the given key

See Also:

getSecretKeyFromHumanReadableKey(String)

getSecretKeyFromHumanReadableKey

public byte[] getSecretKeyFromHumanReadableKey(java.lang.String password)

Generates a key from a human readable String created with getHumanReadableKey(byte[])

Parameters:

password - the String taht should be converted in a key

Returns:

the converted key