Trust model - Web of trust

1 - About

A web of trust is a concept used in PGP, GnuPG, and other OpenPGP-compatible systems to establish the authenticity of the binding between a public key and its owner.

It decentralizes authentication of public keys by a central mechanism, and substitutes individual endorsements of the link between user and public key.

Its decentralized trust model is an alternative to the centralized trust model of a public key infrastructure (PKI), which relies exclusively on a certificate authority (or a hierarchy of such).

certificate authority structure:

  • PGP

3 - Documentation / Reference

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