com.scottyab.aescrypt

Class AESCrypt

java.lang.Object

com.scottyab.aescrypt.AESCrypt

public final class AESCrypt
extends java.lang.Object

Encrypt and decrypt messages using AES 256 bit encryption that are compatible with AESCrypt-ObjC and AESCrypt Ruby.

Created by scottab on 04/10/2014.

Field Summary

Fields

Modifier and Type	Field and Description
static boolean	DEBUG_LOG_ENABLED

Method Summary

Methods

Modifier and Type	Method and Description
static byte[]	decrypt(javax.crypto.spec.SecretKeySpec key, byte[] iv, byte[] decodedCipherText) More flexible AES decrypt that doesn't encode
static java.lang.String	decrypt(java.lang.String password, java.lang.String base64EncodedCipherText) Decrypt and decode ciphertext using 256-bit AES with key generated from password
static byte[]	encrypt(javax.crypto.spec.SecretKeySpec key, byte[] iv, byte[] message) More flexible AES encrypt that doesn't encode
static java.lang.String	encrypt(java.lang.String password, java.lang.String message) Encrypt and encode message using 256-bit AES with key generated from password.

Methods inherited from class java.lang.Object

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

Field Detail

DEBUG_LOG_ENABLED

public static boolean DEBUG_LOG_ENABLED

Method Detail

encrypt

public static java.lang.String encrypt(java.lang.String password,
                       java.lang.String message)
                                throws java.security.GeneralSecurityException

Encrypt and encode message using 256-bit AES with key generated from password.

Parameters:

password - used to generated key

message - the thing you want to encrypt assumed String UTF-8

Returns:

Base64 encoded CipherText

Throws:

java.security.GeneralSecurityException - if problems occur during encryption

encrypt

public static byte[] encrypt(javax.crypto.spec.SecretKeySpec key,
             byte[] iv,
             byte[] message)
                      throws java.security.GeneralSecurityException

More flexible AES encrypt that doesn't encode

Parameters:

key - AES key typically 128, 192 or 256 bit

iv - Initiation Vector

message - in bytes (assumed it's already been decoded)

Returns:

Encrypted cipher text (not encoded)

Throws:

java.security.GeneralSecurityException - if something goes wrong during encryption

decrypt

public static java.lang.String decrypt(java.lang.String password,
                       java.lang.String base64EncodedCipherText)
                                throws java.security.GeneralSecurityException

Decrypt and decode ciphertext using 256-bit AES with key generated from password

Parameters:

password - used to generated key

base64EncodedCipherText - the encrpyted message encoded with base64

Returns:

message in Plain text (String UTF-8)

Throws:

java.security.GeneralSecurityException - if there's an issue decrypting

decrypt

public static byte[] decrypt(javax.crypto.spec.SecretKeySpec key,
             byte[] iv,
             byte[] decodedCipherText)
                      throws java.security.GeneralSecurityException

More flexible AES decrypt that doesn't encode

Parameters:

key - AES key typically 128, 192 or 256 bit

iv - Initiation Vector

decodedCipherText - in bytes (assumed it's already been decoded)

Returns:

Decrypted message cipher text (not encoded)

Throws:

java.security.GeneralSecurityException - if something goes wrong during encryption