Cryptography is one area of information security that is well known but often not well understood. The basics of the algorithms may stay the same, but as attacks and infections evolve, so too must the ...

RC4 is a symmetric cryptosystem, invented in 1987 by MIT cryptographer Ronald Rivest, who went on to found RSA Security. The algorithm has several known flaws, but it is still widely used. RC4 is also ...

So far, we have been discussing symmetric key algorithms such as AES, HMAC, CMAC, GCM, and CCM. These algorithms are known as symmetric (or shared secret) algorithms, since all parties share the same ...

Asymmetric-key algorithms are generally slower than symmetric-key algorithms and are used in cases where only a single operation of the algorithm is required, such as the generation of a digital ...

Algorithms for encrypting computer data come in two main varieties: symmetric and asymmetric. Each encryption type has inherent strengths and weaknesses. Symmetric algorithms convert plain-text data ...

In the last section we discussed the potential for optimizing algorithms, which can be done, but sometimes may not result in the type of performance required. As was mentioned, you can always move the ...

The key used for these kinds of symmetric encryption is called as File Encryption Key (or FEK). This FEK is in return encrypted with a public or a private key algorithm like RSA and stored with the ...