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

Class AbstractPrivateKeyObfuscator

java.lang.Object

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

All Implemented Interfaces:

PrivateKeyObfuscator

Direct Known Subclasses:

AESPrivateKeyObfuscator, DESPrivateKeyObfuscator

public abstract class AbstractPrivateKeyObfuscator
extends java.lang.Object
implements PrivateKeyObfuscator

Field Summary

Fields

Modifier and Type	Field and Description
private java.lang.String	algName

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AbstractPrivateKeyObfuscator(java.lang.String name)

Method Summary

Modifier and Type	Method and Description
<A extends java.lang.Appendable> A	appendPrivateKeyEncryptionContext(A sb, PrivateKeyEncryptionContext encContext)
protected byte[]	applyPrivateKeyCipher(byte[] bytes, PrivateKeyEncryptionContext encContext, int numBits, byte[] keyValue, boolean encryptIt)
protected byte[]	deriveEncryptionKey(PrivateKeyEncryptionContext encContext, int outputKeyLength)
byte[]	generateInitializationVector(PrivateKeyEncryptionContext encContext)
java.lang.String	getCipherName()
protected abstract int	resolveInitializationVectorLength(PrivateKeyEncryptionContext encContext)
protected abstract int	resolveKeyLength(PrivateKeyEncryptionContext encContext)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.sshd.common.config.keys.loader.PrivateKeyObfuscator

applyPrivateKeyCipher, getSupportedKeySizes

Field Detail

algName

private final java.lang.String algName

Constructor Detail

AbstractPrivateKeyObfuscator

protected AbstractPrivateKeyObfuscator(java.lang.String name)

Method Detail

getCipherName

public final java.lang.String getCipherName()

Specified by:

getCipherName in interface PrivateKeyObfuscator

Returns:

Basic cipher used to obfuscate

generateInitializationVector

public byte[] generateInitializationVector(PrivateKeyEncryptionContext encContext)
                                    throws java.security.GeneralSecurityException

Specified by:

generateInitializationVector in interface PrivateKeyObfuscator

Parameters:

encContext - The encryption context

Returns:

An initialization vector suitable to the specified context

Throws:

java.security.GeneralSecurityException

appendPrivateKeyEncryptionContext

public <A extends java.lang.Appendable> A appendPrivateKeyEncryptionContext(A sb,
                                                                            PrivateKeyEncryptionContext encContext)
                                                                     throws java.io.IOException

Specified by:

appendPrivateKeyEncryptionContext in interface PrivateKeyObfuscator

Type Parameters:

A - Appendable generic type

Parameters:

sb - The Appendable instance to update

Returns:

Same appendable instance

Throws:

java.io.IOException

resolveInitializationVectorLength

protected abstract int resolveInitializationVectorLength(PrivateKeyEncryptionContext encContext)
                                                  throws java.security.GeneralSecurityException

Throws:

java.security.GeneralSecurityException

resolveKeyLength

protected abstract int resolveKeyLength(PrivateKeyEncryptionContext encContext)
                                 throws java.security.GeneralSecurityException

Throws:

java.security.GeneralSecurityException

deriveEncryptionKey

protected byte[] deriveEncryptionKey(PrivateKeyEncryptionContext encContext,
                                     int outputKeyLength)
                              throws java.io.IOException,
                                     java.security.GeneralSecurityException

Throws:

java.io.IOException

java.security.GeneralSecurityException

applyPrivateKeyCipher

protected byte[] applyPrivateKeyCipher(byte[] bytes,
                                       PrivateKeyEncryptionContext encContext,
                                       int numBits,
                                       byte[] keyValue,
                                       boolean encryptIt)
                                throws java.io.IOException,
                                       java.security.GeneralSecurityException

Throws:

java.io.IOException

java.security.GeneralSecurityException