E is the encryption function. Data compression symmetric-key cryptography and public key infrastructure PKI and can be used for encrypting texts emails files and directories or for full. Decryption algorithm a mathematical formula thats used to convert ciphertext to plaintext.
P E KC C E KP.
Encryption is a process in which mathematical formulas called encryption algorithms are used to turn plain text into scrambled unreadable ciphertext. This is normally used by the receiver. Asymmetric cryptography also uses mathematical permutations to encrypt a plain text message but it uses two different permutations still known as keys to encrypt and decrypt messages. Encryption requires the use of a cryptographic key.
