Package io.mangoo.crypto

Class Crypto

java.lang.Object

io.mangoo.crypto.Crypto

public class Crypto
extends Object

Convenient class for encryption and decryption

Author:

svenkubiak

Constructor Summary

Constructors

Constructor	Description
Crypto(Config config)

Method Summary

Modifier and Type	Method	Description
byte[]	decrypt(byte[] text, PrivateKey key)	Decrypt text using private key
String	decrypt(String encrytedText)	Decrypts an given encrypted text using the application secret property (application.secret) as key
String	decrypt(String encrytedText, String key)	Decrypts an given encrypted text using the given key
String	decrypt(String text, PrivateKey key)	Decrypt Base64 encoded text using private key
byte[]	encrypt(byte[] text, PublicKey key)	Encrypt a text using public key
String	encrypt(String plainText)	Encrypts a given plain text using the application secret property (application.secret) as key Encryption is done by using AES and CBC Cipher and a key length of 256 bit
String	encrypt(String plainText, String key)	Encrypts a given plain text using the given key Encryption is done by using AES and CBC Cipher and a key length of 256 bit
String	encrypt(String text, PublicKey key)	Encrypt a text using public key.
KeyPair	generateKeyPair()	Generate key which contains a pair of private and public key using 4096 bytes
String	getKeyAsString(Key key)	Convert a Key to string encoded as Base64
PrivateKey	getPrivateKeyFromString(String key)	Generates Private Key from Base64 encoded string
PublicKey	getPublicKeyFromString(String key)	Generates Public Key from Base64 encoded string
String	getSizedSecret(String secret)

Methods inherited from class java.lang.Object

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

Constructor Detail

Crypto

@Inject
public Crypto(Config config)

Method Detail

decrypt

public String decrypt(String encrytedText)

Decrypts an given encrypted text using the application secret property (application.secret) as key

Parameters:

encrytedText - The encrypted text

Returns:

The clear text or null if decryption fails

decrypt

public String decrypt(String encrytedText,
                      String key)

Decrypts an given encrypted text using the given key

Parameters:

encrytedText - The encrypted text

key - The encryption key

Returns:

The clear text or null if decryption fails

encrypt

public String encrypt(String plainText)

Encrypts a given plain text using the application secret property (application.secret) as key Encryption is done by using AES and CBC Cipher and a key length of 256 bit

Parameters:

plainText - The plain text to encrypt

Returns:

The encrypted text or null if encryption fails

encrypt

public String encrypt(String plainText,
                      String key)

Encrypts a given plain text using the given key Encryption is done by using AES and CBC Cipher and a key length of 256 bit

Parameters:

plainText - The plain text to encrypt

key - The key to use for encryption

Returns:

The encrypted text or null if encryption fails

getSizedSecret

public String getSizedSecret(String secret)

generateKeyPair

public KeyPair generateKeyPair()

Generate key which contains a pair of private and public key using 4096 bytes

Returns:

key pair

encrypt

public byte[] encrypt(byte[] text,
                      PublicKey key)
               throws MangooEncryptionException

Encrypt a text using public key

Parameters:

text - The plain text

key - The public key

Returns:

Encrypted text

Throws:

MangooEncryptionException - if encryption fails

encrypt

public String encrypt(String text,
                      PublicKey key)
               throws MangooEncryptionException

Encrypt a text using public key. The result is encoded to Base64.

Parameters:

text - The plain text

key - The public key

Returns:

Encrypted string as base64

Throws:

MangooEncryptionException - if encryption fails

decrypt

public byte[] decrypt(byte[] text,
                      PrivateKey key)
               throws MangooEncryptionException

Decrypt text using private key

Parameters:

text - The encrypted text

key - The private key

Returns:

The unencrypted text

Throws:

MangooEncryptionException - if decryption fails

decrypt

public String decrypt(String text,
                      PrivateKey key)
               throws MangooEncryptionException

Decrypt Base64 encoded text using private key

Parameters:

text - The encrypted text, encoded as Base64

key - The private key

Returns:

The plain text encoded as UTF8

Throws:

MangooEncryptionException - if decryption fails

getKeyAsString

public String getKeyAsString(Key key)

Convert a Key to string encoded as Base64

Parameters:

key - The key (private or public)

Returns:

A string representation of the key

getPrivateKeyFromString

public PrivateKey getPrivateKeyFromString(String key)
                                   throws MangooEncryptionException

Generates Private Key from Base64 encoded string

Parameters:

key - Base64 encoded string which represents the key

Returns:

The PrivateKey

Throws:

MangooEncryptionException - if getting private key from string fails

getPublicKeyFromString

public PublicKey getPublicKeyFromString(String key)
                                 throws MangooEncryptionException

Generates Public Key from Base64 encoded string

Parameters:

key - Base64 encoded string which represents the key

Returns:

The PublicKey

Throws:

MangooEncryptionException - if getting public key from string fails