WhatsApp Messages Decryption using different tools.....

Step 2. Download and extract WhatsApp Xtract from XDA thread to a folder e.g. c:\whatsapp. Copy the database files you got in step1 to this folder.
Step 3. Install Python + pyCrypto library
You’ll need Python runtime and PyCrypto library to decipher the encrypted WhatApp messages.
Install ActivePython (Windows, Linux, Mac OSX). Hint: Use x86 version if you’re using 32-bit OS, else x64 if using 64bit windows.
When downloaded “run as administrator” install pyCrypto.bat. If you’ve any trouble install pyCrypto.
Step 4. For windows, drag & drop the database file on to “whatsapp_xtract_drag’n'drop_database(s)_here.bat”.
If you’re on Mac or Linux, use following commands:
For Android DB:
python whatsapp_xtract.py msgstore.db -w wa.db
OR (if wa.db is unavailable)
python whatsapp_xtract.py msgstore.db
OR (for crypted db)
python whatsapp_xtract.py msgstore.db.crypt
For iPhone DB: (-w option is ignored)
python whatsapp_xtract.py ChatStorage.sqlite
Once you run these, you’ll see the extracted messages into a html file