Principles of security
Cryptography safeguards the three principles of information security, which can be remembered by the mnemonic device Central Intelligence Agency (CIA):
Confidentiality:Â Ensures that information is shared with the appropriate parties and that sensitive information (for example, medical information, some financialdata) is sharedexclusively with the consent of appropriate parties.
Integrity:Â Ensures that only authorized parties can change dataand (depending on the application) that the changes made do not threaten the accuracy or authenticity of the data.This principle is arguably the most relevant to blockchains in general, and especially the public blockchains.
Availability: Ensures authorizedusers (for example, holders of tokens) have the use of data or resources when they need or want them.The distributed and decentralized nature of blockchain helps with this greatly.
The relevance to blockchainand cryptocurrencyis immediately evident:if,for instance,a blockchain did...
