Cryptography is a technique of storing and transmitting information in a particular type so that only anticipated receivers of the information can have access. It includes techniques such as microdots, merging words with images, and other ways to hide information in storage or transit. However, in today’s tech-savvy world, cryptography is mainly related with scrambling ordinary text into cipher text, this process is called encryption.
The modern cryptography has following four objectives:
- Confidentiality- No other user can understand the information other than the intended user.
- Non-repudiation- At a later stage the initiator/sender of the information cannot deny his or her