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This is called a "zero-knowledge proof of knowledge". However, a password is typically too small or insufficiently random to be used in many schemes for zero-knowledge proofs of knowledge. A zero-knowledge password proof is a special kind of zero-knowledge proof of knowledge that addresses the limited size of passwords. [citation needed]
Using different commitment schemes, this idea was used to build zero-knowledge proof systems under the sub-group hiding [38] and under the decisional linear assumption. [39] These proof systems prove circuit satisfiability, and thus by the Cook–Levin theorem allow proving membership for every language in NP. The size of the common reference ...
In cryptography, a zero-knowledge password proof (ZKPP) is a type of zero-knowledge proof that allows one party (the prover) to prove to another party (the verifier) that it knows a value of a password, without revealing anything other than the fact that it knows the password to the verifier.
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.
Zero knowledge may mean: . Zero-knowledge proof, a concept from cryptography, an interactive method for one party to prove to another that a (usually mathematical) statement is true, without revealing anything other than the veracity of the statement
Download as PDF; Printable version; In other projects Wikidata item; ... Zero-knowledge proof This page was last edited on 13 April 2012, at 20:15 (UTC). Text ...
Although several of the forms of EKE in this paper were later found to be flawed [clarification needed], the surviving, refined, and enhanced forms of EKE effectively make this the first method to amplify a shared password into a shared key, where the shared key may subsequently be used to provide a zero-knowledge password proof or other functions.
No proof mechanism is standardized but the data model is flexible enough to support various existing cryptographic mechanisms, such as digital signatures. Proof mechanisms that are in use include: JSON Web Tokens with JSON Web Signatures, JSON-LD proofs, and zero-knowledge proofs using schemes such as IBM's anonymous credentials.