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1javax.crypto.BadPaddingException: Given final block not properly padded
2    at com.sun.crypto.provider.CipherCore.doFinal(CipherCore.java:989)
3    at com.sun.crypto.provider.CipherCore.doFinal(CipherCore.java:845)
4    at com.sun.crypto.provider.AESCipher.engineDoFinal(AESCipher.java:446)
5    at javax.crypto.Cipher.doFinal(Cipher.java:2165)
6	
7public String decrypt(byte[] cipherText, List<SecretKey> skList, List<IvParameterSpec> ivList){
8            Cipher cipherDe;
9
10            SecretKey secretKey;
11            IvParameterSpec ivSpec;
12
13            //byte[] cipherText = new byte[]{};     
14            byte[] deciByte;
15
16            String decryptText = "";
17
18            try 
19            {
20                cipherDe = Cipher.getInstance("AES/CBC/PKCS5Padding");
21
22                try 
23                {           
24                    secretKey = skList.get(0);
25                    ivSpec = ivList.get(0);
26                    cipherDe.init(Cipher.DECRYPT_MODE, secretKey, ivSpec);              
27
28                    try 
29                    {               
30                        //De-cryption
31                        deciByte = cipherDe.doFinal(cipherText);
32
33                        decryptText = new String(deciByte);
34
35                        return decryptText;
36                    }
37
38                    catch (IllegalBlockSizeException e) 
39                    {
40                        e.printStackTrace();
41                    } 
42
43                    catch (BadPaddingException e) 
44                    {
45                        e.printStackTrace();
46                    } 
47                } 
48
49                catch (InvalidKeyException e) 
50                {
51                    e.printStackTrace();
52                }
53
54                //De-cryption
55                catch (InvalidAlgorithmParameterException e1) 
56                {
57                    e1.printStackTrace();
58                }
59            } 
60
61            catch (NoSuchAlgorithmException e) 
62            {       
63                e.printStackTrace();
64            } 
65
66            catch (NoSuchPaddingException e) 
67            {
68                e.printStackTrace();
69            }
70
71            return decryptText;
72        }
73	
74public List getKeyGenerator(){
75
76            List<KeyGenerator> list = new ArrayList<KeyGenerator>();
77            KeyGenerator keyGenerator;
78            int keyBitSize = 128;
79
80            try 
81            {
82                SecureRandom secureRandom = new SecureRandom();
83                keyGenerator = KeyGenerator.getInstance("AES");
84                keyGenerator.init(keyBitSize, secureRandom);
85
86                list.add(keyGenerator);
87
88                return list;
89            } 
90            catch (NoSuchAlgorithmException e)
91            {
92                e.printStackTrace();
93            }
94
95            return list;
96        }
97
98        //Generates Secret Key value
99        public List getSecretKey(List<KeyGenerator> keygen) {
100
101            List<SecretKey> list = new ArrayList<SecretKey>();
102            KeyGenerator keyGenerator;
103            SecretKey secretKey;
104
105            keyGenerator = keygen.get(0);
106            secretKey = keyGenerator.generateKey();
107
108            list.add(secretKey);
109
110            return list;
111        }
112
113        //Generates IV Spec value
114        public List getIvSpec(List<SecretKey> secretKey) {
115List<IvParameterSpec> list = new ArrayList<IvParameterSpec>();
116        Cipher cipher;
117
118        byte[] iv;
119
120        try 
121        {
122            cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
123
124            //De-crypting
125            iv = new byte[cipher.getBlockSize()];           
126            IvParameterSpec ivSpec = new IvParameterSpec(iv);
127
128            list.add(ivSpec);
129        } 
130
131        catch (NoSuchAlgorithmException e) 
132        {       
133            e.printStackTrace();
134        } 
135
136        catch (NoSuchPaddingException e) 
137        {
138            e.printStackTrace();
139        }
140
141        return list;
142    }
143	
144//Crypto Cipher
145    CryptoHelperClass crypto = new CryptoHelperClass();
146    SecretKeyIVGen sk = new SecretKeyIVGen();
147    List<KeyGenerator> kgList = sk.getKeyGenerator();
148    List<SecretKey> skList = sk.getSecretKey(kgList);
149    List<IvParameterSpec> ivList = sk.getIvSpec
150
151//Where byteFruit is a byte[] value retrieved from my MySQL table
152
153crypto.decrypt(byteFruit, skList, ivList(skList);