decrypt12.decrypt12.java Source code

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Here is the source code for decrypt12.decrypt12.java

Source

package decrypt12;

/*
 * 
 *** decrypt12.jar: Decrypts WhatsApp msgstore.db.crypt12 files. ***
 *
 * Author   :   TripCode
 * Copyright   :   Copyright (C) 2016
 * License   :   GPLv3
 * Status   :   Production
 * Version   :   1.0
 *
 */

import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.RandomAccessFile;
import java.security.Security;
import java.util.zip.Inflater;
import java.util.zip.InflaterInputStream;
import javax.crypto.Cipher;
import javax.crypto.CipherInputStream;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;

import org.bouncycastle.jce.provider.BouncyCastleProvider;
// import org.spongycastle.jce.provider.BouncyCastleProvider; // Android

public class decrypt12 {

    static {
        Security.insertProviderAt(new org.bouncycastle.jce.provider.BouncyCastleProvider(), 1);
        // Security.insertProviderAt(new org.spongycastle.jce.provider.BouncyCastleProvider(), 1); // Android
    }

    public static void decrypt(String KeyFile, String C12File, String SQLFile) throws Exception {

        final File tempFile = new File(System.getProperty("java.io.tmpdir") + "/"
                + (int) (System.currentTimeMillis() / 1000L) + "-msgstore.enc");

        if (!new File(KeyFile).isFile())
            quit("The specified input key file does not exist.");

        else if (new File(KeyFile).length() != 158)
            quit("The specified input key file is invalid.");

        else if (!new File(C12File).isFile())
            quit("The specified input crypt12 file does not exist.");

        InputStream KeyIn = new FileInputStream(KeyFile);
        InputStream WdbIn = new BufferedInputStream(new FileInputStream(C12File));

        byte[] KeyData = new byte[158];
        KeyIn.read(KeyData);
        byte[] T1 = new byte[32];
        System.arraycopy(KeyData, 30, T1, 0, 32);
        byte[] KEY = new byte[32];
        System.arraycopy(KeyData, 126, KEY, 0, 32);
        KeyIn.close();

        byte[] C12Data = new byte[67];
        WdbIn.read(C12Data);
        byte[] T2 = new byte[32];
        System.arraycopy(C12Data, 3, T2, 0, 32);
        byte[] IV = new byte[16];
        System.arraycopy(C12Data, 51, IV, 0, 16);

        if (!new String(T1, 0, T1.length, "ASCII").equals(new String(T2, 0, T2.length, "ASCII")))
            quit("Key file mismatch or crypt12 file is corrupt.");

        int InputLength = WdbIn.available();
        RandomAccessFile raf = new RandomAccessFile(tempFile, "rw");

        byte[] tempBuffer = new byte[1024];
        int I;

        while ((I = WdbIn.read(tempBuffer)) != -1)
            raf.write(tempBuffer, 0, I);
        raf.setLength(InputLength - 20);
        raf.close();
        WdbIn.close();

        InputStream PdbSt = new BufferedInputStream(new FileInputStream(tempFile));

        Cipher cipher;
        Security.addProvider(new BouncyCastleProvider());
        cipher = Cipher.getInstance("AES/GCM/NoPadding", "BC"); // BouncyCastle
        // cipher = Cipher.getInstance("AES/GCM/NoPadding", "SC"); // SpongyCastle (Android)

        cipher.init(Cipher.DECRYPT_MODE, new SecretKeySpec(KEY, "AES"), new IvParameterSpec(IV));
        CipherInputStream CipherStream = new CipherInputStream(PdbSt, cipher);

        InflaterInputStream CryptOutput = new InflaterInputStream(CipherStream, new Inflater(false));

        try {
            FileOutputStream InflateBuffer = new FileOutputStream(SQLFile);
            int N = 0;
            byte[] CryptBuffer = new byte[8192];

            while ((N = CryptOutput.read(CryptBuffer)) != -1) {
                InflateBuffer.write(CryptBuffer, 0, N);
            }
            InflateBuffer.close();

        } catch (IOException ex) {
            quit("Fatal error:" + ex);
        }

        CipherStream.close();
        tempFile.delete();

        InputStream SqlDB = new FileInputStream(SQLFile);

        byte[] SqlData = new byte[6];
        SqlDB.read(SqlData);
        byte[] MS = new byte[6];
        System.arraycopy(SqlData, 0, MS, 0, 6);
        SqlDB.close();

        if (!new String(MS, 0, MS.length, "ASCII").toLowerCase().equals("sqlite")) {
            new File(SQLFile).delete();
            quit("Decryption of crypt12 file has failed.");
        }

        else
            quit("Decryption of crypt12 file was successful.");
    }

    private static void quit(String Msg) {
        System.out.println(Msg);
        System.exit(0);
    }

    public static void main(String[] args) throws Exception {

        String outFile;
        if (args.length > 1 && args.length < 4) {
            if (args.length == 3)
                outFile = args[2];
            else
                outFile = "msgstore.db";
            decrypt(args[0], args[1], outFile);
        } else {
            System.out.println("\nWhatsApp Crypt12 Database Decrypter 1.0 Copyright (C) 2016 by TripCode");
            System.out.println("\tUsage: java -jar decrypt12.jar key msgstore.db.crypt12 msgstore.db\n");
        }
    }

}