io.token.security.cipher.aes

Class AesEncrypter

java.lang.Object

io.token.security.cipher.aes.AesEncrypter

All Implemented Interfaces:

Encrypter

public class AesEncrypter
extends java.lang.Object
implements Encrypter

AES encrypter implementation.

Constructor Summary

Constructors

Constructor and Description
AesEncrypter(javax.crypto.SecretKey encryptionKey) Creates an encrypter for the specified key using default encryption algorithms.
AesEncrypter(java.lang.String algorithm, javax.crypto.SecretKey encryptionKey) Creates an encrypter for the specified key using specific encryption algorithms.

Method Summary

Modifier and Type	Method and Description
java.lang.String	encrypt(java.lang.String text) Encrypts the specified text using a symmetric key.
java.lang.String	getAlgorithm() Returns the algorithm name of the encrypter.

Methods inherited from class java.lang.Object

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

Constructor Detail

AesEncrypter

public AesEncrypter(javax.crypto.SecretKey encryptionKey)

Creates an encrypter for the specified key using default encryption algorithms.

Parameters:

encryptionKey - the public key to be used for encryption

AesEncrypter

public AesEncrypter(java.lang.String algorithm,
                    javax.crypto.SecretKey encryptionKey)

Creates an encrypter for the specified key using specific encryption algorithms.

Parameters:

algorithm - the encryption algorithm

encryptionKey - the public key to be used for encryption

Method Detail

getAlgorithm

public java.lang.String getAlgorithm()

Description copied from interface: Encrypter

Returns the algorithm name of the encrypter.

Specified by:

getAlgorithm in interface Encrypter

Returns:

the name of the algorithm

encrypt

public java.lang.String encrypt(java.lang.String text)

Encrypts the specified text using a symmetric key. The produced ciphertext is prepended with the IV used by the encrypter.

The data is represented in the following format:
[iv size] [tag size] [iv data] [ciphertext]
1. The first byte is the size of the iv;
2. followed by the iv data of the size from #1;
3. then followed by the ciphertext bytes.

Specified by:

encrypt in interface Encrypter

Parameters:

text - the text to be encrypted

Returns:

ciphertext