Sams Teach Yourself TCP/IP in 24 Hours, Fourth Edition

Key Terms

Review the following list of key terms:

• Advanced Encryption Standard (AES)— An symmetric encryption algorithm based on DES that supports key lengths of 128, 192, and 256 bits.

• Asymmetric encryption— Encryption that uses different keys for encryption and decryption.

• Blowfish— A symmetric encryption algorithm that supports key lengths of up to 448 bits.

• Certificate authority (CA)— A central authority that oversees the certificate creation and delivery process.

• Data Encryption Standard (DES)— A symmetric encryption algorithm that was once popular but is now considered insecure due to the small 56-bit key length.

• Digital certificate— An encrypted data structure used to distribute a public key.

• Digital signature— An encrypted string used to verify ...