Cryptography Research Paper

I. What is Cryptography? Do you have a message which is so confidential that you need to send to a certain person but you’re afraid that somebody might read it? Well you better study about CRYPTOGRAPHY. But first what is cryptography? Cryptography is the study of hiding readable messages (plaintext) into a non-readable form (ciphertext). Based on my other source Cryptography is the practice and study of techniques for secure communication in the presence of third parties. To make it simple, Cryptography is used in order to make sure that your messages and data are secured from other elements. The method of disguising plaintext in such a way as to hide its substance is called encryption. Encrypting plaintext will result to meaningless data called ciphertext. We use encryption in order to hide the information from anyone whom is not intended even if they can see the encrypted data. But maybe you are curious on how your receiver will be able to read the unreadable message? Well if there is encryption, there is also decryption which is the reverse, in other words, moving from ciphertext back to plaintext. But in order to decipher a ciphertext, you should know the key used by the sender. A key is a usually a short string of characters, which is needed to decrypt a certain ciphertext.

Figure 1.1 Encryption and decryption Cryptography can be strong or weak. Cryptographic strength can be measured in the time it takes for one to recover the plaintext. The result of strong cryptography is a ciphertext that is very difficult to decipher without possession of the proper decoding tools. According from another source, Cryptography is where security engineering meets mathematics. It provides us with tools that underlie most modern security protocols. It is widely used in the modern era to protect distributed systems from the wrong thing, or used to protect them in the wrong way. Cryptography based on my other references is the study of methods to send and receive