'A Complete Overview of Cryptography' by wagslane cryptography publickeycryptography
Data Confidentiality ensures that the data is limited to those who are authorized to view it. The data should only be visible to those who possess some critical information, like the decryption key, for example.refers to the accuracy, legitimacy, and consistency of information in a system. When a message is sent, particularly using an untrusted medium like the internet, data integrity ensures us that a message wasn’t tampered with or accidentally altered.
Let’s use the example of military orders. We’re at war and an army general needs to send an order of retreat to his troops across the sea. Without a guarantee of data integrity, a hacker could intercept the message, change the order, and send it on its way. The army might receive an order to advance and walk right into a trap the general knew about.Non-Repudiation assures that no one can deny the validity of the data in question, and is actually a legal term used in cyber security.
The enemy knows the system. One ought to design systems under the assumption that the enemy will immediately gain full familiarity with them.Never store encryption keys in plain text with the data they protect. That’s the virtual equivalent of locking your front door and leaving the key on the frame. It’s the first place an attacker will look.Protect your private keys with strong access control lists
, or ACLs. Follow the principle of least privilege, that is, only allow those you really need the keys to get access to them.to keep track of your keys. Good secret managers will encrypt your keys using a strong
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