After completing this video, the learner will understand the use of the Pretty Good Privacy cryptographic framework and the Gnu Privacy Guard program.
- [Voiceover] Let's take a look…at another asymmetric algorithm.…In 1991, Phil Zimmerman released an algorithm…that he called the Pretty Good Privacy, or PGP Algorithm.…PGP is still widely used today,…and the details are freely available…for anyone to use through the OpenPGP standard.…PGP uses public and private key pairs…but it performs encryption and decryption…in a little more complex manner than other algorithms…that combines both symmetric and asymmetric cryptography.…
Let's take a look at the encryption process using PGP.…The sender of a message has the original plain text…and then generates a random symmetric encryption key.…Next, the sender encrypts the message…using that random symmetric key,…and then encrypts the random key…using the recipient's public key.…The sender then transmits the encrypted message…which is a combination of the encrypted data…and the encrypted random key.…
When the recipient receives the encrypted message,…he or she performs the decryption process.…First, the recipient decrypts the encrypted random key…
This course is part of a six-course series on the CompTIA Security+ exam, and is useful for IT professionals who wish to learn more about information security as well as students preparing to take the Security+ exam.
We are now a CompTIA Content Publishing Partner. As such, we are able to offer CompTIA exam vouchers at a 10% discount. For more information on how to obtain this discount, please download these PDF instructions.
- Choosing encryption algorithms
- Applying symmetric and asymmetric cryptography standards
- Implementing key management, including key exchange and key stretching
- Working with public keys, trust models, and digital certificates
- Using transport encryption protocols
- Securing wireless networks
Skill Level Intermediate
2. Symmetric Cryptography
3. Asymmetric Cryptography
4. Key Management
5. Public Key Infrastructure
6. Transport Encryption
7. Wireless Security
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