public-key cryptography

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public-key cryptography

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While both private key encryption and private key authentication admit very fast computation with minimal message expansion, public key encryption and digital signatures generally require heavy computation, such as exponentiations involving very large integers, together with message expansion proportional to security parameters (such as the size of a large composite integer or the size of a large finite field).
Beginning with a discussion of the fundamentals of Internet identity including identifying stakeholders in the process, issuing authorities, control methods, usage and maintenance and revocation of identities, the work continues with outlines of common technologies and processes such as public and private key encryption, proxy certificate and Kerberos, and individual examinations of many of the specific standards and identity system in use today, including Web SSO, Liberty Identity and OpenID.
The dongle performs asymmetric public and private key encryption when used as an Active X control (SafeGuard-IT); the software packages need to only be compiled once and can then be distributed with two additional files--the public key and the SafeGuard-IT DLL--to decrypt the information.

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