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A zero-knowledge password proof is a special kind of zero-knowledge proof of knowledge that addresses the limited size of passwords. [ citation needed ] In April 2015, the one-out-of-many proofs protocol (a Sigma protocol ) was introduced. [ 14 ]
A common use of a zero-knowledge password proof is in authentication systems where one party wants to prove its identity to a second party using a password but doesn't want the second party or anybody else to learn anything about the password. For example, apps can validate a password without processing it and a payment app can check the ...
One particular motivating example is the use of commitment schemes in zero-knowledge proofs.Commitments are used in zero-knowledge proofs for two main purposes: first, to allow the prover to participate in "cut and choose" proofs where the verifier will be presented with a choice of what to learn, and the prover will reveal only what corresponds to the verifier's choice.
Photo by Clint Adair on Unsplash The following post was written and/or published as a collaboration between Benzinga’s in-house sponsored content team and a financial partner of Benzinga. The ...
Pass [5] showed that in the common reference string model non-interactive zero-knowledge protocols do not preserve all of the properties of interactive zero-knowledge protocols; e.g., they do not preserve deniability. Non-interactive zero-knowledge proofs can also be obtained in the random oracle model using the Fiat–Shamir heuristic.
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Zero-knowledge password proof and key agreement systems (such as Secure Remote Password (SRP)) Challenge-Handshake Authentication Protocol (CHAP) (RFC 1994) CRAM-MD5, OCRA: OATH Challenge-Response Algorithm (RFC 6287) Salted Challenge Response Authentication Mechanism (SCRAM) (RFC 5802) ssh's challenge-response system based on RSA. [3]
In addition, zero-knowledge services often strive to hold as little metadata as possible, holding only that data that is functionally needed by the service. The term "zero-knowledge" was popularized by backup service SpiderOak , which later switched to using the term "no knowledge" to avoid confusion with the computer science concept of zero ...