Text Steganography is hiding information inside the text files. Steganography Techniquesĭepending on the nature of the cover object(actual object in which secret data is embedded), steganography can be divided into five types: For the remainder of this steganography tutorial, we will learn about different steganography techniques and tools. The downside being, the hidden message is easier to extract if the presence of secret is discovered. So, in other words, steganography is more discreet than cryptography when we want to send confidential information. If you possess the decryption key, then you can figure out original message from the ciphertext Once the presence of a secret message is discovered, anyone can use the secret data Optional, but offers more security if used It’s a technique to convert data into an incomprehensible formĭoesn’t alter the overall structure of data
It is a technique to hide the existence of communication So, if someone were to intercept this encrypted message, they could easily see that some form of encryption had been applied. On the other hand, steganography does not change the format of the information but it conceals the existence of the message. How is Steganography different from Cryptography?Īt their core, both of them have almost the same goal, which is protecting a message or information from the third parties. However, they use a totally different mechanism to protect the information.Ĭryptography changes the information to ciphertext which cannot be understood without a decryption key. No, they are two different concepts and this steganography tutorial presents you the main differences between them. Now you might be wondering if steganography is same as cryptography. Now, we have a lot of modern steganographic techniques and tools to make sure that knows our data remains secret. Null Ciphers were also used to hide unencrypted secret messages in an innocent looking normal message.During World War II the Germans introduced microdots, which were complete documents, pictures, and plans reduced in size to the size of a dot and were attached to normal paperwork.Romans used various forms of Invisible Inks, to decipher those hidden messages light or heat were used.The first use of steganography can be traced back to 440 BC when ancient Greece, people wrote messages on wood and covered it with wax, that acted as a covering medium.Steganography is an ancient practice, being practiced in various forms for thousands of years to keep communications private. It stems from two Greek words, which are steganos, means covered and graphia, means writing. Steganography is the practice of concealing a secret message behind a normal message. Steganography Tutorial: Historical Background To retrieve the secret message, Stego Object is fed into Steganographic Decoder. Resulting Stego Object looks very similar to your cover file, with no visible changes. Steganographic Encoder function, f(X,M,K) embeds the secret message into a cover file. The diagram below depicts a basic steganographic model.Īs the image depicts, both cover file(X) and secret message(M) are fed into steganographic encoder as input. Steganography is the art and science of embedding secret messages in a cover message in such a way that no one, apart from the sender and intended recipient, suspects the existence of the message
0 kommentar(er)
