org.apache.sshd.common.config.keys.loader

Class AESPrivateKeyObfuscator

java.lang.Object

org.apache.sshd.common.config.keys.loader.AbstractPrivateKeyObfuscator

org.apache.sshd.common.config.keys.loader.AESPrivateKeyObfuscator

All Implemented Interfaces:

PrivateKeyObfuscator

Direct Known Subclasses:

OpenSSHKeyPairResourceWriter.KeyEncryptor

public class AESPrivateKeyObfuscator
extends AbstractPrivateKeyObfuscator

Author:

Apache MINA SSHD Project

Field Summary

Fields

Modifier and Type	Field and Description
static String	CIPHER_NAME
static AESPrivateKeyObfuscator	INSTANCE

Constructor Summary

Constructors

Constructor and Description
AESPrivateKeyObfuscator()

Method Summary

Modifier and Type	Method and Description
byte[]	applyPrivateKeyCipher(byte[] bytes, PrivateKeyEncryptionContext encContext, boolean encryptIt)
static Predicate<CipherInformation>	createCipherSelector(int keyLength, String cipherMode)
static List<Integer>	getAvailableKeyLengths()
List<Integer>	getSupportedKeySizes()
protected CipherInformation	resolveCipherInformation(int keyLength, String cipherMode)
protected int	resolveInitializationVectorLength(PrivateKeyEncryptionContext encContext)
protected int	resolveKeyLength(PrivateKeyEncryptionContext encContext)

Methods inherited from class org.apache.sshd.common.config.keys.loader.AbstractPrivateKeyObfuscator

appendPrivateKeyEncryptionContext, applyPrivateKeyCipher, deriveEncryptionKey, generateInitializationVector, getCipherName

Methods inherited from class java.lang.Object

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

Field Detail

CIPHER_NAME

public static final String CIPHER_NAME

See Also:

Constant Field Values

INSTANCE

public static final AESPrivateKeyObfuscator INSTANCE

Constructor Detail

AESPrivateKeyObfuscator

public AESPrivateKeyObfuscator()

Method Detail

getSupportedKeySizes

public List<Integer> getSupportedKeySizes()

Returns:

A List of the supported key sizes - Note: every call returns a and un-modifiable instance.

applyPrivateKeyCipher

public byte[] applyPrivateKeyCipher(byte[] bytes,
                                    PrivateKeyEncryptionContext encContext,
                                    boolean encryptIt)
                             throws GeneralSecurityException,
                                    IOException

Parameters:

bytes - Original bytes

encContext - The encryption context

encryptIt - If true then encrypt the original bytes, otherwise decrypt them

Returns:

The result of applying the cipher to the original bytes

Throws:

GeneralSecurityException - If cannot encrypt/decrypt

IOException - If malformed input

resolveInitializationVectorLength

protected int resolveInitializationVectorLength(PrivateKeyEncryptionContext encContext)
                                         throws GeneralSecurityException

Specified by:

resolveInitializationVectorLength in class AbstractPrivateKeyObfuscator

Throws:

GeneralSecurityException

resolveCipherInformation

protected CipherInformation resolveCipherInformation(int keyLength,
                                                     String cipherMode)

resolveKeyLength

protected int resolveKeyLength(PrivateKeyEncryptionContext encContext)
                        throws GeneralSecurityException

Specified by:

resolveKeyLength in class AbstractPrivateKeyObfuscator

Throws:

GeneralSecurityException

getAvailableKeyLengths

public static List<Integer> getAvailableKeyLengths()

Returns:

A List of Integers holding the available key lengths values (in bits) for the JVM. Note: AES 256 requires special JCE policy extension installation (e.g., for Java 7 see this link)

createCipherSelector

public static Predicate<CipherInformation> createCipherSelector(int keyLength,
                                                                String cipherMode)