In cryptography, encryption is the process of encoding messages or information in such a way that only authorized parties can read it. Encryption does not of itself prevent interception, but denies the message content to the interceptor. In an encryption scheme, the intended communication information or message, referred to as plaintext, is encrypted using an encryption algorithm, generating ciphertext that can only be read if decrypted. For technical reasons, an encryption scheme usually uses a pseudo-random encryption key generated by an algorithm. It is in principle possible to decrypt the message without possessing the key, but, for a well-designed encryption scheme, large computational resources and skill are required. An authorized recipient can easily decrypt the message with the key provided by the originator to recipients, but not to unauthorized interceptors.
The purpose of encryption is to ensure that only somebody who is authorized to access data (e.g. a text message or a file), will be able to read it, using the decryption key. Somebody who is not authorized can be excluded, because he or she does not have the required key, without which it is impossible to read the encrypted information.

View More On
  1. AshWilliams

    Australia bans encryption

    First they disarm their citizenry, now they've banned encryption. Sucks to be an Australian these days. Let's pray America never goes down this path. Australia Bans Encryption! – X2X Technology, Powered by CRIP.TO – Medium
  2. ATCclears

    How to encrypt your life in less than one hour

    How to encrypt your entire life in less than an hour
  3. ATCclears

    How to change your iPhone or iPad password to a phrase

    Go beyond a 4-digit or 6-digit password. How to change your iPhone passcode so the cops can't hack it | Cult of Mac
  4. ATCclears

    Another security enhancement for Firefox web browser - TLS 1.2 only

    Restricting Firefox to TLS version 1.2 makes browsing safer Using Firefox? Here is a way to lock it down.
  5. ATCclears

    Protect your personal information - test websites that you do business with...

    SSL Server Test (Powered by Qualys SSL Labs) This is a free service that you can use to test how well the website is configured to encrypt web pages and data flowing between your web browser and the website. I won't do business (or provide any personal information) to a website that gets less...
Back Top