Influence of Interviewer’s Knowledge on Witness Interviewing and Witness Statements

Analysing Deception in Written Witness Statements

Written witness statements are a unique source for the study of high-stakes textual deception. To date, however, there is no distinction in the way that they and other forms of verbal deception have been analysed, with written statements treated as extensions of transcribed versions of oral reports. Given the highly context-dependent nature of cues, it makes sense to take the characteristics of...

Zero-Knowledge Proofs with Witness Elimination

Zero-knowledge proofs with witness elimination are protocols that enable a prover to demonstrate knowledge of a witness to the verifier that accepts the interaction provided that the witness is valid for a given statement and additionally the witness does not belong to a set of eliminated witnesses. This set is determined by a public relation Q (that parameterizes the primitive) and the private...

Delegateable Signature Using Witness Indistinguishable and Witness Hiding Proofs

A delegateable signature scheme is a signature scheme where the owner of the signing key(Alice) can securely delegate to another party(Bob) the ability to sign on Alice’s behalf on a restricted subset S of the message space. Barak first defined and constructed this signature scheme using non-interactive zero-knowledge proof of knowledge(NIZKPK)[1]. In his delegateable signature scheme, the func...

Jury Instructions on Witness Identification

Witness Sets

Given a set C of binary n-tuples and c ∈ C, how many bits of c suffice to distinguish it from the other elements in C ? We shed new light on this old combinatorial problem and improve on previously known bounds.