!!! Overview
A [{$pagename}] ([Victor]) is an [entity] that must be convinced that the [prover] ([Peggy]) knows some ''facts''.A [{$pagename}] performs [Verification] by [validation] of some ''facts''!! [zero-knowledge proof]
A [{$pagename}] ([Victor]) is an [entity] that must be convinced that the [prover] ([Peggy]) knows some ''facts'' __without__ revealing __ANY__ information about these ''facts''.

!! [Password Validator]
A [{$pagename}] is an [entity] that verifies the [Claims] [Assertion] by verifying the Claimant’s possession and control of a token using an [Authentication Method]. 

To do this, the [{$pagename}] may also need to validate [credentials] that link the [token] and [Digital Identity] and check their status. ([NIST.SP.800-63])

!! [Identity Verification Service]
Many companies use a [Identity Verification Service] as a [{$pagename}]

!! More Information
There might be more information for this subject on one of the following:
[{ReferringPagesPlugin before='*' after='\n' }]