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Although a blockchain network is more than a communications network, it relies on the PKI standard to ensure secure communication between various network participants, and to ensure that messages posted on the blockchain are properly authenticated.
It’s therefore important to understand the basics of PKI and then why MSPs are so important.
Revocation of a certificate can happen for a number of reasons.
A CA’s Certificate Revocation List (CRL) constitutes a reference for the certificates that are no longer valid.
More specifically, an MSP is a component that defines the rules that govern the valid identities for this organization.
The default MSP implementation in Fabric uses X.509 certificates as identities, adopting a traditional Public Key Infrastructure (PKI) hierarchical model (more on PKI later).
Let’s drill into these concepts in a little more detail.
A public key infrastructure (PKI) is a collection of internet technologies that provides secure communications in a network.