During the last few years, our lives are growing explosively with the help of internet, so the data security is ensured to us that our data is accessible only by the receiver. For achieving this level of security, various methods as well as algorithms have been developed. Cryptography is a technique that is used to guarantee the privacy of communication between two or more parties. By the use of valid key, the cipher text can be decrypted to the original plaintext. The presented work represents the review of the different techniques used for the cryptography techniques.