Deep Topic Expander

Underlying Themes of Cryptography Cryptography is all about keeping communication secure and confidential, and there are a few underlying themes that make that possible. Confidentiality Confidentiality is the principle of keeping information private and secure from unauthorized access. Encryption is the process of converting plain text into ciphertext that only authorized users can read, so it's a key component of confidentiality. Integrity Integrity is the principle of making sure that the information remains unchanged and unaltered during transmission. This is accomplished through the use of digital signatures that verify the information hasn't been tampered with. Authenticity Authenticity is the principle of verifying the identity of the sender and making sure the information comes from a trusted source. Digital certificates are used to authenticate the identity of the sender and the information itself. Non-repudiation Non-repudiation is the principle of ensuring that the sender of the information can't deny sending it. Digital signatures are used to verify the sender's identity and authenticate the information. Availability Availability is the principle of ensuring that the information is accessible to authorized users when they need it. Access controls are used to limit access to the information to only those who are authorized to see it. Something You Might Not Know About Cryptography Now for that little-known fact! Did you know that cryptography has played a significant role in many major historical events? During World War II, for example, cryptography was essential in enabling the Allied forces to defeat the Axis powers. By cracking the Enigma code used by the Germans to encrypt their messages, the Allies were able to read top-secret German communications, giving them a huge advantage in the war. And did you know that cryptography was used by the ancient Greeks and Egyptians to protect important documents and send secret messages during wartime? That's right, cryptography has a rich and fascinating history that goes back thousands of years!