Btukfyl

Here's the thing, I'm able to encrypt text by calling these methods which I've written but I'm not able to decrypt the text that I'm receiving from the database.

After having looked up various solutions here, I did add the encoding type while forming the original string and I still am facing this problem.

Here are the methods for encrypting and decrypting used :

//fetching key from keystore

private static void init() {

    KeyStore keyStore;

    try {

        keyStore = KeyStore.getInstance(KEYSTORE_FORMAT);

        InputStream inputStream = new FileInputStream(PROPERTIES_FILE_NAME);

        keyStore.load(inputStream, PASSWORD.toCharArray());

        key = keyStore.getKey(KEY_ALIAS, PASSWORD.toCharArray());

        cipher = Cipher.getInstance(CIPHER_ALGORITHM);

        inputStream.close();

    } catch (Exception e) {

        System.out.println(e);

        }

    }



//returning key either for encryption or decryption

public static Key getKey() {

        return key;

}



public static String encrypt(String plainText) throws HeException {

    try {

        cipher.init(Cipher.ENCRYPT_MODE, getKey());

        byte encryptedByte = cipher.doFinal(plainText.getBytes("UTF-8"));

        String encryptedText = Base64.getEncoder().encodeToString(encryptedByte);

        return encryptedText;

    } catch (Exception e) {

            System.out.println(e);

    }

}



public static String decrypt(String encryptedText) throws HeException {

    try {

        byte encryptedTextByte = Base64.getDecoder().decode(encryptedText);

        cipher.init(Cipher.DECRYPT_MODE, getKey());

        String decryptedText = new String(cipher.doFinal(encryptedTextByte),"UTF-8");

        return decryptedText;

    } catch (Exception e) {

        System.out.println(e);

    }

}

And here's the exception I'm getting :

javax.crypto.IllegalBlockSizeException: Input length must be multiple of 16 when decrypting with padded cipher

    at com.sun.crypto.provider.CipherCore.doFinal(CipherCore.java:936) ~[sunjce_provider.jar:1.8.0_171]

    at com.sun.crypto.provider.CipherCore.doFinal(CipherCore.java:847) ~[sunjce_provider.jar:1.8.0_171]

    at com.sun.crypto.provider.AESCipher.engineDoFinal(AESCipher.java:446) ~[sunjce_provider.jar:1.8.0_171]

    at javax.crypto.Cipher.doFinal(Cipher.java:2164) ~[?:1.8.0_171]

Is there anything to be added apart from the encoding for the decryption or do I have to change the way of encryption itself ?
Would greatly appreciate your help and thanks a lot in advance.