co.lemnisk.app.android.encryption

Class EncryptionHandler

java.lang.Object

co.lemnisk.app.android.encryption.EncryptionHandler

public class EncryptionHandler
extends java.lang.Object

Method Summary

Modifier and Type	Method and Description
java.lang.String	decrypt(java.lang.String result)
java.lang.String	decryptAESKeyWithRSAAndText(java.lang.String encryptedKey, byte[] encryptedData)
java.lang.String	decryptData(java.lang.String alias, byte[] encryptedData, byte[] encryptionIv)
java.lang.String	encrypt(java.lang.Object... args) Encrypt plain text to RSA encrypted and Base64 encoded string
java.lang.String	encryptAESKeyWithRSA(java.lang.String alias, byte[] iv)
byte[]	encryptText(java.lang.String alias, java.lang.String textToEncrypt)
static EncryptionHandler	getInstance()
byte[]	getIv()
java.lang.String	getPublicKey(java.lang.String option)
static java.security.PublicKey	stringToPublicKey(java.lang.String publicKeyString)

Methods inherited from class java.lang.Object

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

Method Detail

getInstance

public static EncryptionHandler getInstance()

encrypt

public java.lang.String encrypt(java.lang.Object... args)
                         throws java.security.NoSuchAlgorithmException,
                                javax.crypto.NoSuchPaddingException,
                                java.security.InvalidKeyException,
                                javax.crypto.IllegalBlockSizeException,
                                javax.crypto.BadPaddingException

Encrypt plain text to RSA encrypted and Base64 encoded string

Parameters:

args - args[0] should be plain text that will be encrypted If args[1] is be, it should be RSA public key to be used as encrypt public key

Returns:

a encrypted string that Base64 encoded

Throws:

java.security.NoSuchAlgorithmException

javax.crypto.NoSuchPaddingException

java.security.InvalidKeyException

javax.crypto.IllegalBlockSizeException

javax.crypto.BadPaddingException

decrypt

public java.lang.String decrypt(java.lang.String result)
                         throws java.security.NoSuchAlgorithmException,
                                javax.crypto.NoSuchPaddingException,
                                java.security.InvalidKeyException,
                                javax.crypto.IllegalBlockSizeException,
                                javax.crypto.BadPaddingException

Throws:

java.security.NoSuchAlgorithmException

javax.crypto.NoSuchPaddingException

java.security.InvalidKeyException

javax.crypto.IllegalBlockSizeException

javax.crypto.BadPaddingException

getPublicKey

public java.lang.String getPublicKey(java.lang.String option)
                              throws java.security.NoSuchAlgorithmException,
                                     javax.crypto.NoSuchPaddingException,
                                     java.security.InvalidKeyException,
                                     javax.crypto.IllegalBlockSizeException,
                                     javax.crypto.BadPaddingException

Throws:

java.security.NoSuchAlgorithmException

javax.crypto.NoSuchPaddingException

java.security.InvalidKeyException

javax.crypto.IllegalBlockSizeException

javax.crypto.BadPaddingException

stringToPublicKey

public static java.security.PublicKey stringToPublicKey(java.lang.String publicKeyString)
                                                 throws java.security.NoSuchAlgorithmException,
                                                        javax.crypto.NoSuchPaddingException,
                                                        java.security.InvalidKeyException,
                                                        javax.crypto.IllegalBlockSizeException,
                                                        javax.crypto.BadPaddingException

Throws:

java.security.NoSuchAlgorithmException

javax.crypto.NoSuchPaddingException

java.security.InvalidKeyException

javax.crypto.IllegalBlockSizeException

javax.crypto.BadPaddingException

encryptText

public byte[] encryptText(java.lang.String alias,
                          java.lang.String textToEncrypt)
                   throws java.security.UnrecoverableEntryException,
                          java.security.NoSuchAlgorithmException,
                          java.security.KeyStoreException,
                          java.security.NoSuchProviderException,
                          javax.crypto.NoSuchPaddingException,
                          java.security.InvalidKeyException,
                          java.io.IOException,
                          java.security.InvalidAlgorithmParameterException,
                          java.security.SignatureException,
                          javax.crypto.BadPaddingException,
                          javax.crypto.IllegalBlockSizeException

Throws:

java.security.UnrecoverableEntryException

java.security.NoSuchAlgorithmException

java.security.KeyStoreException

java.security.NoSuchProviderException

javax.crypto.NoSuchPaddingException

java.security.InvalidKeyException

java.io.IOException

java.security.InvalidAlgorithmParameterException

java.security.SignatureException

javax.crypto.BadPaddingException

javax.crypto.IllegalBlockSizeException

getIv

public byte[] getIv()

decryptData

public java.lang.String decryptData(java.lang.String alias,
                                    byte[] encryptedData,
                                    byte[] encryptionIv)
                             throws java.security.UnrecoverableEntryException,
                                    java.security.NoSuchAlgorithmException,
                                    java.security.KeyStoreException,
                                    java.security.NoSuchProviderException,
                                    javax.crypto.NoSuchPaddingException,
                                    java.security.InvalidKeyException,
                                    java.io.IOException,
                                    javax.crypto.BadPaddingException,
                                    javax.crypto.IllegalBlockSizeException,
                                    java.security.InvalidAlgorithmParameterException

Throws:

java.security.UnrecoverableEntryException

java.security.NoSuchAlgorithmException

java.security.KeyStoreException

java.security.NoSuchProviderException

javax.crypto.NoSuchPaddingException

java.security.InvalidKeyException

java.io.IOException

javax.crypto.BadPaddingException

javax.crypto.IllegalBlockSizeException

java.security.InvalidAlgorithmParameterException

encryptAESKeyWithRSA

public java.lang.String encryptAESKeyWithRSA(java.lang.String alias,
                                             byte[] iv)

decryptAESKeyWithRSAAndText

public java.lang.String decryptAESKeyWithRSAAndText(java.lang.String encryptedKey,
                                                    byte[] encryptedData)