COMPUTER FUNDAMENTALS

Detailed explanation-1: -Asymmetric encryption uses one key to encrypt data and a different key to decrypt data. The two terms used to describe keys are the following: Key length-Also called the key, this is the measure in bits. Keyspace-This is the number of possibilities that a specific key length can generate.

Detailed explanation-2: -In this cipher, two different keys–public key and private key–are used for encryption and decryption. The sender uses the public key to perform the encryption, but the private key is kept secret from the receiver. This is also known as “asymmetric key algorithm."

Detailed explanation-3: -Cryptographic ciphers are used to convert ciphertext to plaintext and back. With symmetric key algorithms, the same key is used for the encryption and decryption of data. Asymmetric key algorithms use public keys and private keys to encrypt and decrypt data.

Detailed explanation-4: -In cryptography, a block cipher is a deterministic algorithm operating on fixed-length groups of bits, called blocks. Block ciphers are specified elementary components in the design of many cryptographic protocols and are widely used to encrypt large amounts of data, including in data exchange protocols.

Detailed explanation-5: -AES-128 uses a 128-bit key length to encrypt and decrypt a block of messages. AES-192 uses a 192-bit key length to encrypt and decrypt a block of messages.