Steganography is the art of sending secret messages in such way that apart from reciever and sender no other person can see the message.According to greek origin the word steganography means concealed writing .Steganography is different from Cryptography in which the message is made unreadable by others except the reciever.But the existence of a message is known in Cryptography.
In olden days Steganography was most prevalent when a secret message has to be sent from one king to the other.They used wood carved with message ,concealed it in wax to send the message.Usually no suspicion arises when seen by a third person.Believe it or not Human urine was also used to send secret messages.
In olden days Steganography was most prevalent when a secret message has to be sent from one king to the other.They used wood carved with message ,concealed it in wax to send the message.Usually no suspicion arises when seen by a third person.Believe it or not Human urine was also used to send secret messages.