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20-Oct-2019 01:55
Authentication and message integrity are important concepts in secure communications.Authentication requires that parties who exchange messages are assured of the identity that created a specific message.For an identity to be verifiable, it must come from a trusted authority.A membership service provider (MSP) is how this is achieved in Fabric.Revocation of a certificate can happen for a number of reasons.For example, a certificate may be revoked because the cryptographic private material associated to the certificate has been exposed.There are many other attributes in an X.509 certificate, but let’s concentrate on just these for now. The certificate also holds many more pieces of information, as you can see.
A digital identity furthermore has some additional attributes that Fabric uses to determine permissions, and it gives the union of an identity and the associated attributes a special name — principal.For example, Mary Morris in the Manufacturing Division of Mitchell Cars in Detroit, Michigan might have a digital certificate with a .