uyQAn8ZW

1//Private Variables
2        private Secretkeyfactory secretkeyfactory ;
3        private Cipher cipher;
4
5        //Constructor
6        public Decrypt128CBC()
7        {
8          this.secretkeyfactory =Secretkeyfactory.getInstance("PBKDF2WithHmacSHA1");
9          this.cipher=Cipher.getInstance("AES/CBC/PKCS5Padding")
10        }
11            Public string DecryptedValue(String Ecryptedbase64string,String secKey)
12            {
13             byte[] dcdbytes=Base64.decodeBase64(Ecryptedbase64string.getBytes());
14            byte[] calculatesalt=Arrays.copyOfRange(dcdbytes,0,32);
15            byte[] initialvecto=Arrays.copyOfRange(dcdbytes,32,48);
16            byte[] encodedtext=Arrays.copyOfRange(dcdbytes,48,dcdbytes.length);
17            SecretKey sk=getRandompwd(calculatesalt,secKey);
18            IvParameterSpec vectspec=new IvParameterSpec(initialvecto);
19            byte[] decrtptxt=null;
20            synchronized(cipher){
21            cipher.init(Cipher.DECRYPT_MODE,sk,vectspec);
22            decrtptxt=cipher.doFinal(encodedtext)
23            }
24        String finalvalue=new String(decrtptxt);
25        return finalvalue;
26            }
27
28        private SecretKey getRandompwd(byte[] salt,String secKey)
29        {
30        SecretKeySpec objSecKeySpec=new SecretKeySpec(Base64.decodeBase64(secKey),"HmacSHA1");    
31        String skey=Base64.encodeBase64String(objSecKeySpec.getEncoded());
32        KeySpec kspec=new PBEKeySpec(skey.toCharArray(),salt,76456,128);
33        SecretKey tmpSecKey=secretKeyKactory.generateSecret(kspec);
34        byte[] encoded=tmpSecKey.getEncoded();
35        return new SecretKeySpec(encoded,'AES')
36        }
37	
38var crypto=require('crypto');
39var Ecryptedbase64string='fsffsfgf6575FGHDM767fsffsfs...…...';
40var DecryptKey='J8nMD7ZnFg......';
41var byteEncryptedString=new Buffer(Ecryptedbase64string,'base64');
42var salt=byteEncryptedString.slice(0,32);
43var iv=byteEncryptedString.slice(32,48);
44var cipherText=byteEncryptedString.slice(48,byteEncryptedString.length);
45var binaryKey=new Buffer(DecryptKey,""base64);
46var callback=function(err,key){
47let cipher=crypto.createDecipheriv('AES-128-CBC',key,iv);
48let finalDecrptedText=Buffer.concat([cipher.update(cipherText),cipher.final()]);
49};
50crypto.pbkdf2(binaryKey,salt,76456,16,callback);