Chapter 23: Problem 17

What is the goal of encryption? What process is involved in encrypting data and then recovering it at the other end?

Short Answer

Expert verified

The goal of encryption is to protect digital data confidentiality during its storage on computer systems and transmission over computer networks. It involves converting plaintext into ciphertext using an encryption algorithm and decryption key, transmitting the encrypted data, and then the recipient decrypts the data using the correct key to recover the original information.

Step by step solution

Define Encryption

Encryption is a method used to secure information by converting it into a code to prevent unauthorized access. The main goal of encryption is to protect digital data confidentiality during its storage on computer systems and during transmission over the internet or other computer networks.

Explain the Encryption Process

The process of encryption begins with plaintext, which is the original information that needs to be sent securely. The plaintext is then converted into a ciphertext using an encryption algorithm and an encryption key. This is called encryption. The ciphertext appears as a random stream of data and can only be converted back into plaintext using the correct decryption key.

Explain the Decryption Process

Once the encrypted data reaches the recipient, the reverse process, called decryption, takes place. The recipient uses the correct decryption key to decrypt the ciphertext and convert it back into the original plaintext format. This entire process ensures that the original information is sent securely from one end to another without getting in the hands of unauthorized users who don’t have the necessary decryption keys.

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What is the goal of encryption? What process is involved in encrypting data and then recovering it at the other end?

Short Answer

Step by step solution

Define Encryption

Explain the Encryption Process

Explain the Decryption Process

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