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Understanding Encryption: A Guide to Secure Communication Techniques

Encryption is the process of converting clear text into a coded format to protect sensitive information. It secures data transmission across networks and between users and websites. There are two main types of encryption: symmetric and asymmetric. Symmetric encryption uses the same key for both encoding and decoding, while asymmetric encryption employs a pair of keys - a public key for encoding and a private key for decoding. HTTPS, utilizing SSL/TLS, is the standard for secure Internet communications, ensuring data confidentiality and integrity.

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Understanding Encryption: A Guide to Secure Communication Techniques

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  1. Q5 – How does encryption work? Learning Aid Type Text Page 206 MGS 3040-03GROUP C Svitlana Panasik

  2. What is Encryption? The process of transforming clear text into coded, unintelligible text for security reasons . It’s used to help make transmissions more secure across networks and between users and Web sites.

  3. A key is a number used to encrypt the data • The encryption algorithm applies the key to the original message to produce the coded message. • In symmetric encryption, the same key is used to encode and to decode. • With asymmetric encryption, different keys are used; one key encodes the message, and the other key decodes the message. • Symmetric encryption is simpler and much faster than asymmetric encryption.

  4. Public key/private key is a special version of asymmetric encryption mainly used on the Internet.

  5. Public key/private key • The public key encodes a message and is exchanged among users • The private key decodes a message but is never exchanged among users.

  6. Secure communication • HTTPS is the most secure protocol used on the Internet. • Secure Socket Layer (SSL), also known as Transport Layer Security (TLS), combines public key/private key with symmetric encryption to establish a secure exchange of data on a Web site. • Web sites using this type of security will have https:// at the beginning of the URL.

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