Today an Internet provides communication between
billions of people all around the world. When
communication is ascending, security becomes key factor to
deal with it. Since Internet communication is entirely
digital, the security can be provided in two ways, one is
Cryptography and the other is Steganography. Cryptography is considered to the area of both Mathematics and Computer Science. Cryptography is a method of
sending an enciphered content so that nobody except the
receiver can decipher it. Steganography on the other hand is
akin to Cryptography. Though Steganography is an ancient
method, modern computer technology has given a new life
to it. A combination of both Cryptography and
Steganography[14] provides a very high security.