What Is Encryption in Computer Security?

What Is Encryption in Computer Security?


Essentially, encryption is a process of transforming information and data into an unreadable form that can only be decrypted by the parties that have the keys. It can be done using a wide range of mathematic models and is used daily to safeguard the data and information that consumers and businesses use in their everyday lives.

Modern encryption algorithms are crucial to protect the confidentiality of digital information stored on computers or transmitted through networks like the internet. It also provides security measures such as authentication (verifying the source of the message) and integrity (ensuring that it hasn’t been altered) and anti-repudiation.

Algorithms are employed to convert plaintext into ciphertext. The encrypted text can only be converted back into plaintext with a decryption key, which is a secret string of numbers or password that a sender and receiver agree on. The more secure the cryptographic key is, the more difficult for non-authorized third parties to crack it using brute force techniques, such as trying every possible string of characters.

A number of privacy and security rules require the use of strong encryption in order to ensure that private information remains private and secure. Many people and companies use encryption to protect files as well as entire computers with programs such as 7-Zip and CertainSafe. They can also protect the entire hard drive in the cloud using virtual private networks. Many companies offer multiple encryption options which provide the most secure security.

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