DES and RSA
DES and RSA are actually algorithms rather than standards. However, because the vast majority of security standards are based on one or both of these algorithms, they are briefly mentioned here to provide you with a complete understanding of how the standards work. For example, Secure Electronic Transactions (SET), a method for encrypting credit card information, uses DES as its default symmetric key algorithm, and the RSA asymmetric key algorithms for digital signatures and digital envelopes.
DES
DES (Data Encryption Standard) is the default data encryption algorithm used for protecting financial information. Originally published in 1977 by IBM for use by the United States government to protect valuable and sensitive—but unclassified—data, ...
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