![]() ![]() However, hashing has a different problem that we have to cope with. To be clear, for things like passwords, we want them to be stored as a hash not encrypted because if the key is compromised, so is your password. Output from an encryption algorithm can be fed back into the algorithm with the key to get the original input. An encryption algorithm is two way and requires a key. Output from a hashing algorithm cannot be put back into the algorithm to get the original input. ![]() Hashing and encryption are different from one another. Let's go over password basics and explain some things. Using the secret keyword forces the system to use MD5 hashing but this still isn't the best we could use. We have to turn on password encryption on the system but even this is a pretty weak encryption algorithm. Most people going through CCNA training will know that by default, Cisco IOS and IOS-XE devices do not hash passwords in the configuration. ![]()
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