com.eduworks.ec.crypto

Class EcAesCtr

java.lang.Object

com.eduworks.ec.crypto.EcAesCtr

public class EcAesCtr
extends Object

Encrypts data synchronously using AES-256-CTR. Requires secret and iv to be 32 bytes. Output is encoded in base64 for easier handling.

Author:

fritz.ray@eduworks.com

Constructor Summary

Constructors

Constructor and Description
EcAesCtr()

Method Summary

Modifier and Type	Method and Description
static String	decrypt(String ciphertext, String secret, String iv) Decrypts ciphertext using AES-256-CTR.
static String	encrypt(String plaintext, String secret, String iv) Encrypts plaintext using AES-256-CTR.

Methods inherited from class java.lang.Object

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

Constructor Detail

EcAesCtr

public EcAesCtr()

Method Detail

encrypt

public static String encrypt(String plaintext,
                             String secret,
                             String iv)

Encrypts plaintext using AES-256-CTR. Plaintext is treated as as a sequence of bytes, does not perform UTF8 decoding. Returns base64 encoded ciphertext.

Parameters:

{string} - plaintext Text to encrypt.

{string} - secret Secret to use to encrypt.

{string} - iv Initialization Vector to use to encrypt.

Returns:

{string} Ciphertext encoded using base64.

decrypt

public static String decrypt(String ciphertext,
                             String secret,
                             String iv)

Decrypts ciphertext using AES-256-CTR. Ciphertext must be base64 encoded ciphertext. Returns plaintext as a string (Sequence of bytes, no encoding).

Parameters:

{string} - ciphertext Ciphertext to decrypt.

{string} - secret Secret to use to decrypt.

{string} - iv Initialization Vector to use to decrypt.

Returns:

{string} Plaintext with no encoding.