It will first go to the Encryption algorithm where a secret key is also taking part with algorithm. Here, you can see that a plaintext is ready to be sent to the receiver.

The below image will help you understand the Symmetric Cipher Model. At the receiver part, this Ciphertext gets decrypted by some decryption algorithm, so that the receiver can read the message. It has a plaintext that is to be encrypted in Ciphertext via some encryption algorithm, and sent via a secure channel to the receiver. We are taking here about the Symmetric Cipher Model which really is very easy to understand. The key part can be a public or private key depending upon which model you are working on – Symmetric or Asymmetric Model. cryptology - field of both cryptography and cryptanalysisįor any secure communication, there is a need for three things - Encryption Algorithm, Decryption Algorithm, and a Key.cryptanalysis - (code-breaking) study of principles/ methods of deciphering ciphertext without knowing key.cryptography - study of encryption principles/methods.

decipher - (decrypt) recovering ciphertext from plaintext.encipher - (encrypt) converting plaintext to ciphertext.key - info used in cipher known only to sender/receiver.cipher - algorithm for transforming plaintext to ciphertext.So, it is necessary to understand the basic terminology that we will be using in our article. To understand the mess of Information Security is beyond the scope of my article, but I can give you a partial understanding by taking a resourceful model of information security.

Caesar cipher decryption tool