Point being, this open-source method is more secure than trying to keep an algorithm itself obscured (sometimes called security by obscurity). In other words: “The key to encryption is the key.” Note that Kirchoffs advocated what is now commonly referred to as “open-source” for the algorithm. Kerckhoffs’ principle states that a cryptosystem should be secure even if everything about the system, except the key, is public knowledge. Modern encryption is based on published and vetted digital algorithms, such as Advanced Encryption System (AES), Secure Hashing Algorithms (SHA) and Elliptic Curve Cryptography (ECC), among many others. Given that these algorithms are public and known to everyone, the security must come from something else - that thing is a secret cryptographic “key.” This fundamental principal was articulated in the 19th century by Auguste Kerckhoffs, a Dutch linguist, cryptographer and professor. The message was written on the wrapping and unfurled, then sent to the receiver who wrapped on on the rod of the same diameter in order to read it. They used a device called a “ Scytale,” which was a ribbon of leather or parchment that was wrapped around a rod of a diameter, of which only the sender and receiver were aware. The ancient Greeks beat Caesar to the punch, however. Encryption was, in fact, used extensively by Julius Caesar, which led to the classic type of encryption aptly named, Caesar Cipher. Throughout time, there have been a number of ways to encrypt and decrypt messages. ![]() ![]() Encryption, of course, is scrambling a message in a certain way that only the intended party can descramble (i.e. ![]() With the emergence of breaches and vulnerabilities, the need for hardware security has never been so paramount.Ĭonfidentiality - one of the three foundational pillars of security, along with data integrity and authenticity - is created in a digital system via encryption and decryption.
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