Santos:CCNA Sec 210-260 OCG

Key Management

Key management is huge in the world of cryptography. We have symmetric keys that can be used with symmetric algorithms such as hashing and encryption. We have asymmetric keys such as public-private key pairs that can be used with asymmetric algorithms such as digital signatures, among other things. We could say that the key to security with all of these algorithms that we have taken a look at is the keys themselves.

Key management deals with generating keys, verifying keys, exchanging keys, storing keys, and at the end of their lifetime, destroying keys. An example of why this is critical is if two devices that want to establish a VPN session send the encryption keys over at the beginning of their session in plain text. If that ...