Encryption Software
Computer Science: OCR A Level, topic 2.2.3
Encryption Software
Encryption software is essential whenever sensitive data is being transferred or stored.
What is encryption?
- Encryption is the "scrambling" of data.
- It works by applying a special encryption algorithm to the data in the file.
- Encryption processes are very mathematical processes. Strong encryption algorithms can be the result of years of professional research.
What is decryption?
- Decryption is when an authorised party uses a special key to un-scramble the data.
- The key prevents unauthorised users from accessing the data.
Encryption in operating systems
- Good encryption utilities will work closely with the operating system to encrypt and decrypt files in real time as you need to access them.
Test yourself on Encryption Software
Encryption software is essential for what type of data?