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Resumen

 

PRIVILEGE DELEGATION: PATH VALIDATION vs. CERTIFICATE REVOCATION

DELEGACIÓN PRIVILEGIADA: VALIDACION vs. REVOCACION
Cristina Satizábal.
Rafael Páez.
Jordi Forné.

Abstrac: One of the challenges of the current delegation systems is the efficient management of the delegation paths. In this aper, we determine the computational cost of the cryptographic operations that a privilege verifier carries out during the validation of a delegation path, as the path length is increased. Also, we analyze the influence of the revocation mechanisms, CRL and OCSP, in such cost. Our goal is to show the complexity of the delegation path validation process and to motivate the search of new alternatives that lead to simplify this process.

Resumen: Uno de los retos del sistema de delegación actual es la administración eficiente de los caminos de la delegación. Este articulo, determinamos el costo computacional de las operaciones de criptografía que un verificador de privilegio lleva a cabo durante la validación de un camino de delegación, cuando la longitud del camino se aumenta. También, se analiza la influencia de los mecanismos de revocación, CRL y OCSP, y sus costos. Nuestro objetivo es mostrar la complejidad del proceso de validación del camino de la delegación y motivar las búsquedas de nuevas alternativas que puedan conducir a simplificar este proceso.

Keywords: Privilege Management Infrastructure (PMI), Delegation Path Validation, CRL (Certificate Revocation List), OCSP (Online Certificate Status Protocol).