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1Cipher aesCipherForEncryption = Cipher.getInstance("AES/CBC/PKCS5PADDING");
2	
3No Such Algorithm exists java.security.NoSuchAlgorithmException: Cannot find any provider supporting DES/CBC/PKCS7Padding.
4	
5String strDataToEncrypt = new String();
6    String strCipherText = new String();
7    String strDecryptedText = new String();
8
9    try {
10        KeyGenerator keyGen = KeyGenerator.getInstance("AES");
11        keyGen.init(128);
12        SecretKey secretKey = keyGen.generateKey();
13
14        final int AES_KEYLENGTH = 128;  
15        byte[] iv = new byte[AES_KEYLENGTH / 8];    
16        SecureRandom prng = new SecureRandom();
17        prng.nextBytes(iv);
18
19        Cipher aesCipherForEncryption = Cipher.getInstance("AES/CBC/PKCS7PADDING");
20
21        aesCipherForEncryption.init(Cipher.ENCRYPT_MODE, secretKey, new IvParameterSpec(iv));
22
23        strDataToEncrypt = "Hello World of Encryption using AES ";
24        byte[] byteDataToEncrypt = strDataToEncrypt.getBytes();
25        byte[] byteCipherText = aesCipherForEncryption.doFinal(byteDataToEncrypt);
26
27        strCipherText = new BASE64Encoder().encode(byteCipherText);
28        System.out.println("Cipher Text generated using AES is " + strCipherText);
29
30
31        Cipher aesCipherForDecryption = Cipher.getInstance("AES/CBC/PKCS7PADDING"); 
32
33        aesCipherForDecryption.init(Cipher.DECRYPT_MODE, secretKey, new IvParameterSpec(iv));
34        byte[] byteDecryptedText = aesCipherForDecryption.doFinal(byteCipherText);
35        strDecryptedText = new String(byteDecryptedText);
36
37        System.out.println(" Decrypted Text message is " + strDecryptedText);
38
39    } catch (NoSuchAlgorithmException noSuchAlgo) {
40        System.out.println(" No Such Algorithm exists " + noSuchAlgo);
41    } catch (NoSuchPaddingException noSuchPad) {
42        System.out.println(" No Such Padding exists " + noSuchPad);
43    } catch (InvalidKeyException invalidKey) {
44        System.out.println(" Invalid Key " + invalidKey);
45    } catch (BadPaddingException badPadding) {
46        System.out.println(" Bad Padding " + badPadding);
47    } catch (IllegalBlockSizeException illegalBlockSize) {
48        System.out.println(" Illegal Block Size " + illegalBlockSize);
49    } catch (InvalidAlgorithmParameterException invalidParam) {
50        System.out.println(" Invalid Parameter " + invalidParam);
51    }