io.jsondb.crypto

Class Default1Cipher

java.lang.Object

io.jsondb.crypto.Default1Cipher

All Implemented Interfaces:

ICipher

public class Default1Cipher
extends java.lang.Object
implements ICipher

A default AES (GCM Mode) Cipher. AES is a 128-bit block cipher supporting keys of 128, 192, and 256 bits. The constructors do not check if key provided as parameter indeed specifies a valid AES key. It does not check key size, nor does it check for weak or sem-weak keys. Note: If you want to use Key > 128 bits then you need to install Java Cryptography Extension (JCE) Unlimited Strength Jurisdiction Policy files.

Constructor Summary

Constructors

Constructor and Description
Default1Cipher(byte[] encryptionKey) Creates a new default cipher using 'UTF-8' encoding and key.
Default1Cipher(byte[] encryptionKey, java.nio.charset.Charset charset) Creates a new default cipher with the specified charset encoding and key.
Default1Cipher(java.lang.String base64CodedEncryptionKey) Creates a new default cipher using 'UTF-8' encoding, with a base64-encoded key.
Default1Cipher(java.lang.String base64CodedEncryptionKey, java.nio.charset.Charset charset) Creates a new default cipher with the specified charset encoding, with a base64-encoded key.

Method Summary

Modifier and Type	Method and Description
java.lang.String	decrypt(java.lang.String cipherText) A method to decrypt the provided cipher text.
java.lang.String	encrypt(java.lang.String plainText) This method is used to encrypt(Symmetric) plainText coming in input using AES algorithm

Methods inherited from class java.lang.Object

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

Constructor Detail

Default1Cipher

public Default1Cipher(java.lang.String base64CodedEncryptionKey)
               throws java.security.GeneralSecurityException

Creates a new default cipher using 'UTF-8' encoding, with a base64-encoded key.

Parameters:

base64CodedEncryptionKey - A base 64 encoded symmetric key to be used during encryption and decryption.

Throws:

java.security.GeneralSecurityException - a general security exception

Default1Cipher

public Default1Cipher(byte[] encryptionKey)
               throws java.security.GeneralSecurityException

Creates a new default cipher using 'UTF-8' encoding and key.

Parameters:

encryptionKey - A symmetric key to be used during encryption and decryption.

Throws:

java.security.GeneralSecurityException - a general security exception

Default1Cipher

public Default1Cipher(java.lang.String base64CodedEncryptionKey,
                      java.nio.charset.Charset charset)
               throws java.security.GeneralSecurityException

Creates a new default cipher with the specified charset encoding, with a base64-encoded key.

Parameters:

base64CodedEncryptionKey - A base 64 encoded symmetric key to be used during encryption and decryption.

charset - The charset to be considered when encrypting plaintext or decrypting ciphertext.

Throws:

java.security.GeneralSecurityException - a general security exception

Default1Cipher

public Default1Cipher(byte[] encryptionKey,
                      java.nio.charset.Charset charset)
               throws java.security.GeneralSecurityException

Creates a new default cipher with the specified charset encoding and key.

Parameters:

encryptionKey - A symmetric key to be used during encryption and decryption.

charset - The charset to be considered when encrypting plaintext or decrypting ciphertext.

Throws:

java.security.GeneralSecurityException - a general security exception

Method Detail

encrypt

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

This method is used to encrypt(Symmetric) plainText coming in input using AES algorithm

Specified by:

encrypt in interface ICipher

Parameters:

plainText - the plain text string to be encrypted

Returns:

Base64 encoded AES encrypted cipher text

decrypt

public java.lang.String decrypt(java.lang.String cipherText)

A method to decrypt the provided cipher text.

Specified by:

decrypt in interface ICipher

Parameters:

cipherText - AES encrypted cipherText

Returns:

decrypted text