stegano secrets - python
TRANSCRIPT
Stegano Secrets - Python
Santhosh Baswa
Cyber Security Enthusiast
October 17, 2015
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Introduction
Steganography
Steganography comes from Greek Word. It means covered or secretwriting.
” Steganography = steganos (covered) + graphein (writing) ”
Main Points
” The goal of steganography is to hide messages in such a way thatno one apart from the intended recipient even knows that a messagehas been sent.”
This can be achieve by concealing the existence of information withinseemingly harmless carriers or cover.
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Block diagram of Steganography
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Steganography in Images
Image Encoding Techniques
The most common approaches to information hiding in images:
Least Significant bit Insertion
Masking and Filtering
Algorithms and transformations
Where we can use ?
Confidential Communication
Secret Data Storing
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Practical Session Starts with Python
By Using Python
Python Scripting is most powerful language for Security Professionals.
Syntax is too simple.
Lot of 3rd party modules available.
Python Modules used :
We are mainly using these modules in this session:
binascii (hexify)
getpass
sys , os
simplecrypt
Image,stepic
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Modules : binascii (hexify) and getpass
hexify
getpass
os and sys (stdin)
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Modules : simplecrypt
simplecrypt
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Modules : Image , Stepic
Image - Stepic
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Final Program Source code
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