Grid Security Infrastructure (GSI) An OGSA-based Grid security architecture Globus Toolkit proposed and implements the GSI –Protocols and APIs to address Grid security needs Based on public-key encryption technology –SSL protocol for authentication, message protection –CAs allow one-way, light-weight trust relationships (not just site-to- site) –X.509 certificates Each user as a Grid id, a private key, and a certificate signed by a CA
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