iSfPF8bN

1- (NSData *)AES128DecryptWithKey:(NSString *)key 
2{
3    // 'key' should be 16 bytes for AES128, will be null-padded otherwise
4    char keyPtr[kCCKeySizeAES128+1]; // room for terminator (unused)
5    bzero(keyPtr, sizeof(keyPtr)); // fill with zeroes (for padding)
6
7    // fetch key data
8    [key getCString:keyPtr maxLength:sizeof(keyPtr) encoding:NSUTF8StringEncoding];
9
10    NSUInteger dataLength = [self length];
11
12    //See the doc: For block ciphers, the output size will always be less than or 
13    //equal to the input size plus the size of one block.
14    //That's why we need to add the size of one block here
15    size_t bufferSize = dataLength + kCCBlockSizeAES128;
16    void *buffer = malloc(bufferSize);
17
18    size_t numBytesDecrypted = 0;
19    CCCryptorStatus cryptStatus = CCCrypt(kCCDecrypt, kCCAlgorithmAES128, 0,keyPtr, kCCKeySizeAES128,
20                                          NULL /* initialization vector (optional) */,
21                                          [self bytes], dataLength, /* input */
22                                          buffer, bufferSize, /* output */
23                                          &numBytesDecrypted);
24
25    if (cryptStatus == kCCSuccess)
26    {
27        //the returned NSData takes ownership of the buffer and will free it on deallocation
28        return [NSData dataWithBytesNoCopy:buffer length:numBytesDecrypted];
29    }
30
31    free(buffer); //free the buffer;
32    return nil;
33}
34	
35String mesg="hi";
36String aesKey="1EF5F2D644FBA8E4142778CD43D70BFA";
37
38byte[] raw =CryptoUtil.HexToByte(aesKey);
39
40SecretKeySpec skey = new SecretKeySpec(raw, "AES")
41
42byte[] encryptedmsg=encrypt(mesg.getBytes(), skey);
43String encodedMesg=b64.encode(encryptedmsg);
44
45private static byte[] encrypt(byte[] inpBytes,
46 SecretKey key)  {
47  Cipher cipher
48  byte[] b
49  try{
50   println "inside encrypt"
51   cipher = Cipher.getInstance(xform);
52   cipher.init(Cipher.ENCRYPT_MODE, key);
53   b=cipher.doFinal(inpBytes);
54   println "encrypted bytearr::"+b
55  }
56  catch (Exception e) {
57   println "exception in encrypt:"+e.getMessage()
58  }
59  return b
60 }
61public static byte[] HexToByte(String hex) {
62 int len = hex.length();
63 if (len % 2 == 1) {
64  hex = "0" + hex;
65  len++;
66 }
67 byte[] value = new byte[len / 2];
68 for (int i = 0; i < len; i += 2) {
69  value[i / 2] = (byte) ((Character.digit(hex.charAt(i), 16) << 4) + Character
70    .digit(hex.charAt(i + 1), 16));
71
72 }
73 return value;
74}
75	
76CCCryptorStatus cryptStatus = CCCrypt(kCCDecrypt, 
77                                      kCCAlgorithmAES128, 
78                                      kCCOptionECBMode | kCCOptionPKCS7Padding,
79                                      keyPtr, 
80                                      kCCKeySizeAES128,
81                                      NULL /* initialization vector (optional) */,
82                                      [self bytes], dataLength, /* input */
83                                      buffer, bufferSize, /* output */
84                                      &numBytesDecrypted);