Encryption Terminology

Eavesdropper = A person who intercepts data being transmitted Plaintext = The original text/document/message before it is put through an encryption algorithm Block cipher = The encryption of a number of contiguous bits in one go rather than one bit at a time Symmetric encryption = Encryption in which the same secret key is used to encrypt and decrypt messages

Ciphertext = The product when plaintext is put through an encryption algorithm Stream cipher = The encryption of bits in sequence as they arrive at the encryption algorithm Block chaining = Form of encryption in which the previous block of ciphertext is XORed with the block of plaintext and then encrypted thus preventing identical plaintext blocks producing identical ciphertext Asymmetric encryption = Encryption that uses public keys (known to everyone) and private keys (secret keys)

Key distribution problem = Security issue inherent in symmetric encryption arising from the risk that the key can be intercepted by an eavesdropper/hacker when sending the secret key to a recipient Public key = Encryption/decryption key known to all users Private key = Encryption/decryption key which is known only to a single user/computer

<p>Block cipher = The encryption of a number of contiguous bits in one go rather than one bit at a time Key distribution problem = Security issue inherent in symmetric encryption arising from the risk that the key can be intercepted by an eavesdropper/hacker when sending the secret key to a recipient Private key = Encryption/decryption key which is known only to a single user/computer Eavesdropper = A person who intercepts data being transmitted</p> Signup and view all the answers

<p>Plaintext = The original text/document/message before it is put through an encryption algorithm Block chaining = Form of encryption in which the previous block of ciphertext is XORed with the block of plaintext and then encrypted thus preventing identical plaintext blocks producing identical ciphertext Stream cipher = The encryption of bits in sequence as they arrive at the encryption algorithm Public key = Encryption/decryption key known to all users</p> Signup and view all the answers