cz.d1x.dxcrypto.encryption.crypto

Class CryptoFactories

java.lang.Object

cz.d1x.dxcrypto.encryption.crypto.CryptoFactories

All Implemented Interfaces:

EncryptionFactories

public class CryptoFactories
extends Object
implements EncryptionFactories

Factories for engines that use Java standard API (javax.crypto) as encryption implementations. This factory creates these algorithms:

• AES-128: CBC mode with PKCS#5 padding
• AES-256: CBC mode with PKCS#5 padding
• 3DES: CBC mode with PKCS#5 padding
• RSA: ECB mode with OAEP SHA-256 and MGF1 padding
• Derived keys: PBKDF2 with HMAC-SHA1

Note that if you use AES-256 and stronger ciphers, JCE installation is required for this factory.

Constructor Summary

Constructors

Constructor and Description
CryptoFactories()

Method Summary

Modifier and Type	Method and Description
SymmetricEncryptionEngineFactory<ByteArray>	aes() Creates a new engine factory for AES (128 bits).
SymmetricEncryptionEngineFactory<ByteArray>	aes256() Creates a new engine factory for AES (256 bits).
EncryptionKeyFactory<ByteArray,DerivedKeyParams>	derivedKeyFactory() Creates a new key factory for derived keys (typically by hash function).
AsymmetricEncryptionEngineFactory<RSAKeyParams,RSAKeyParams>	rsa() Creates a new engine factory for RSA.
SymmetricEncryptionEngineFactory<ByteArray>	tripleDes() Creates a new engine factory for Triple DES.

Methods inherited from class java.lang.Object

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

Constructor Detail

CryptoFactories

public CryptoFactories()

Method Detail

derivedKeyFactory

public EncryptionKeyFactory<ByteArray,DerivedKeyParams> derivedKeyFactory()

Description copied from interface: EncryptionFactories

Creates a new key factory for derived keys (typically by hash function). Used for derivation of key by SymmetricEncryptionEngineFactory (AES, 3DES). It is recommended to use PBKDF2 (HMAC with SHA-1) as it is used for default crypto implementation.

Specified by:

derivedKeyFactory in interface EncryptionFactories

Returns:

key factory for key derivation

aes

public SymmetricEncryptionEngineFactory<ByteArray> aes()

Description copied from interface: EncryptionFactories

Creates a new engine factory for AES (128 bits).

Specified by:

aes in interface EncryptionFactories

Returns:

factory for AES

aes256

public SymmetricEncryptionEngineFactory<ByteArray> aes256()

Description copied from interface: EncryptionFactories

Creates a new engine factory for AES (256 bits).

Specified by:

aes256 in interface EncryptionFactories

Returns:

factory for AES-256

tripleDes

public SymmetricEncryptionEngineFactory<ByteArray> tripleDes()

Description copied from interface: EncryptionFactories

Creates a new engine factory for Triple DES.

Specified by:

tripleDes in interface EncryptionFactories

Returns:

factory for Triple DES

rsa

public AsymmetricEncryptionEngineFactory<RSAKeyParams,RSAKeyParams> rsa()

Description copied from interface: EncryptionFactories

Creates a new engine factory for RSA.

Specified by:

rsa in interface EncryptionFactories

Returns:

factory for RSA