cz.d1x.dxcrypto.encryption

Class EncryptionAlgorithms

java.lang.Object

cz.d1x.dxcrypto.encryption.EncryptionAlgorithms

public class EncryptionAlgorithms
extends Object

Factory that provides builders for available encryption algorithms. Create a new builder and when you are done with parameters, call build() to retrieve EncryptionAlgorithm instance.

Author:

Zdenek Obst, zdenek.obst-at-gmail.com

Constructor Summary

Constructors

Constructor and Description
EncryptionAlgorithms()

Method Summary

Modifier and Type	Method and Description
static SymmetricCryptoAlgorithmBuilder	aes(byte[] keyPassword) Creates a new builder for AES encryption algorithm with these properties: Type of cipher: Symmetric Operation mode: Cipher Block Chaining (CBC) Key size: 128 bits Block size: 128 bits Input padding: PKCS#5 Encryption key: PBKDF2 with HMAC-SHA1 for key derivation You can provide salt and iterations count for PBKDF2.
static SymmetricCryptoAlgorithmBuilder	aes(KeyFactory<Key> keyFactory) Creates a new builder for AES encryption algorithm with these properties: Type of cipher: Symmetric Operation mode: Cipher Block Chaining (CBC) Block size: 128 bits Input padding: PKCS#5 Encryption key: based on given key factory
static SymmetricCryptoAlgorithmBuilder	aes(String keyPassword) Creates a new builder for AES encryption algorithm with these properties: Type of cipher: Symmetric Operation mode: Cipher Block Chaining (CBC) Key size: 128 bits Block size: 128 bits Input padding: PKCS#5 Encryption key: PBKDF2 with HMAC-SHA1 for key derivation You can provide salt and iterations count for PBKDF2.
static AsymmetricCryptoAlgorithmBuilder	rsa() Creates a new builder for RSA encryption algorithm with these properties: Type of cipher: Asymmetric Operation mode: Electronic Codebook (ECB) Input padding: OAEP with SHA-256 (MGF1 for masks) If you don't have key pair, you can generate some via RSAKeysGenerator.
static SymmetricCryptoAlgorithmBuilder	tripleDes(byte[] keyPassword) Creates a new builder for 3DES encryption algorithm with these properties: Type of cipher: Symmetric Operation mode: Cipher Block Chaining (CBC) Key size: 192 bits Block size: 64 bits Input padding: PKCS#5 Encryption key: PBKDF2 with HMAC-SHA1 for key derivation (can be overridden) You can provide salt and iterations count for PBKDF2.
static SymmetricCryptoAlgorithmBuilder	tripleDes(KeyFactory<Key> keyFactory) Crates a new builder for 3DES encryption algorithm with these properties: Type of cipher: Symmetric Operation mode: Cipher Block Chaining (CBC) Block size: 64 bits Input padding: PKCS#5 Encryption key: based on given key factory
static SymmetricCryptoAlgorithmBuilder	tripleDes(String keyPassword) Creates a new builder for 3DES encryption algorithm with these properties: Type of cipher: Symmetric Operation mode: Cipher Block Chaining (CBC) Key size: 192 bits Block size: 64 bits Input padding: PKCS#5 Encryption key: PBKDF2 with HMAC-SHA1 for key derivation (can be overridden) You can provide salt and iterations count for PBKDF2.

Methods inherited from class java.lang.Object

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

Constructor Detail

EncryptionAlgorithms

public EncryptionAlgorithms()

Method Detail

aes

public static SymmetricCryptoAlgorithmBuilder aes(byte[] keyPassword)
                                           throws IllegalArgumentException

Creates a new builder for AES encryption algorithm with these properties:

• Type of cipher: Symmetric
• Operation mode: Cipher Block Chaining (CBC)
• Key size: 128 bits
• Block size: 128 bits
• Input padding: PKCS#5
• Encryption key: PBKDF2 with HMAC-SHA1 for key derivation

You can provide salt and iterations count for PBKDF2. If you want custom encryption key derivation, you can use aes(KeyFactory) method to specify custom factory for the key.

Parameters:

keyPassword - password for key derivation

Returns:

builder for AES encryption

Throws:

IllegalArgumentException - exception if passed key password is null

aes

public static SymmetricCryptoAlgorithmBuilder aes(String keyPassword)
                                           throws IllegalArgumentException

Creates a new builder for AES encryption algorithm with these properties:

• Type of cipher: Symmetric
• Operation mode: Cipher Block Chaining (CBC)
• Key size: 128 bits
• Block size: 128 bits
• Input padding: PKCS#5
• Encryption key: PBKDF2 with HMAC-SHA1 for key derivation

You can provide salt and iterations count for PBKDF2. If you want custom encryption key derivation, you can use aes(KeyFactory) method to specify custom factory for the key.

Parameters:

keyPassword - password for key derivation

Returns:

builder for AES encryption algorithm

Throws:

IllegalArgumentException - exception if passed key password is null

aes

public static SymmetricCryptoAlgorithmBuilder aes(KeyFactory<Key> keyFactory)
                                           throws IllegalArgumentException

Creates a new builder for AES encryption algorithm with these properties:

• Type of cipher: Symmetric
• Operation mode: Cipher Block Chaining (CBC)
• Block size: 128 bits
• Input padding: PKCS#5
• Encryption key: based on given key factory

Parameters:

keyFactory - custom factory for encryption key

Returns:

builder for AES encryption algorithm

Throws:

IllegalArgumentException - exception if passed key factory is null

tripleDes

public static SymmetricCryptoAlgorithmBuilder tripleDes(byte[] keyPassword)
                                                 throws IllegalArgumentException

Creates a new builder for 3DES encryption algorithm with these properties:

• Type of cipher: Symmetric
• Operation mode: Cipher Block Chaining (CBC)
• Key size: 192 bits
• Block size: 64 bits
• Input padding: PKCS#5
• Encryption key: PBKDF2 with HMAC-SHA1 for key derivation (can be overridden)

You can provide salt and iterations count for PBKDF2. If you want custom encryption key derivation, you can use tripleDes(KeyFactory) method to specify custom factory for the key.

Parameters:

keyPassword - password for key derivation

Returns:

builder for 3DES encryption algorithm

Throws:

IllegalArgumentException - exception if passed key password is null

tripleDes

public static SymmetricCryptoAlgorithmBuilder tripleDes(String keyPassword)
                                                 throws IllegalArgumentException

Creates a new builder for 3DES encryption algorithm with these properties:

• Type of cipher: Symmetric
• Operation mode: Cipher Block Chaining (CBC)
• Key size: 192 bits
• Block size: 64 bits
• Input padding: PKCS#5
• Encryption key: PBKDF2 with HMAC-SHA1 for key derivation (can be overridden)

You can provide salt and iterations count for PBKDF2. If you want custom encryption key derivation, you can use tripleDes(KeyFactory) method to specify custom factory for the key.

Parameters:

keyPassword - password for key derivation

Returns:

builder for 3DES encryption algorithm

Throws:

IllegalArgumentException - exception if passed key password is null

tripleDes

public static SymmetricCryptoAlgorithmBuilder tripleDes(KeyFactory<Key> keyFactory)
                                                 throws IllegalArgumentException

Crates a new builder for 3DES encryption algorithm with these properties:

• Type of cipher: Symmetric
• Operation mode: Cipher Block Chaining (CBC)
• Block size: 64 bits
• Input padding: PKCS#5
• Encryption key: based on given key factory

Parameters:

keyFactory - custom factory for encryption key

Returns:

builder for 3DES encryption algorithm

Throws:

IllegalArgumentException - exception if passed key factory is null

rsa

public static AsymmetricCryptoAlgorithmBuilder rsa()

Creates a new builder for RSA encryption algorithm with these properties:

• Type of cipher: Asymmetric
• Operation mode: Electronic Codebook (ECB)
• Input padding: OAEP with SHA-256 (MGF1 for masks)

If you don't have key pair, you can generate some via RSAKeysGenerator.

Returns:

builder for RSA encryption algorithm