Editing Public key infrastructure (section)

=== Simple public key infrastructure ===
{{main|Simple public-key infrastructure}}

Another alternative, which does not deal with public authentication of public key information, is the simple public key infrastructure (SPKI), which grew out of three independent efforts to overcome the complexities of [[X.509]] and [[Pretty Good Privacy|PGP]]'s web of trust. SPKI does not associate users with persons, since the ''key'' is what is trusted, rather than the person. SPKI does not use any notion of trust, as the verifier is also the issuer. This is called an "authorization loop" in SPKI terminology, where authorization is integral to its design.<ref>{{cite web |last=Gonzalez |first=Eloi |title=Simple Public Key Infrastructure |url=https://www.limited-entropy.com/docs/spki.pdf}}</ref> This type of PKI is specially useful for making integrations of PKI that do not rely on third parties for certificate authorization, certificate information, etc.; a good example of this is an [[Air gap (networking)|air-gapped]] network in an office.