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008230929t20232023onca    ob   f000 0 eng d
040 |aCaOODSP|beng|erda|cCaOODSP
0410 |aeng|beng|bfre
0861 |aFB3-5/2023-50E-PDF
1001 |aKazmi, Raza Ali, |eauthor.
24510|aAnonymous credentials : |bsecret-free and quantum-safe / |cby Raza Ali Kazmi and Cyrus Minwalla.
264 1|a[Ottawa] : |bBank of Canada = Banque du Canada, |c2023.
264 4|c©2023
300 |a1 online resource (15 pages) : |billustrations.
336 |atext|btxt|2rdacontent
337 |acomputer|bc|2rdamedia
338 |aonline resource|bcr|2rdacarrier
4901 |aStaff working paper = |aDocument de travail du personnel, |x1701-9397 ; |v2023-50
500 |a"September 28, 2023."
500 |aCover title.
504 |aIncludes bibliographical references (pages [14]-15).
5203 |a"An anonymous credential mechanism is a set of protocols that allows users to obtain credentials from an organization and demonstrate ownership of these credentials without compromising users' privacy. In this work, we construct the first secret-free and quantum-safe credential mechanism. The scheme is secret-free in the sense that an organization does not need to guard a secret key. The scheme is also lightweight in construction. Security of the scheme relies on the ability of the organization to maintain the integrity of a publicly known data structure - namely, a Merkle tree - that utilizes a quantum-safe, partially homomorphic hash function as a foundational primitive. We also construct a simple, quantum-safe, zero-knowledge argument of knowledge of membership in the Merkle tree. Additionally, we explore a concrete instantiation of the scheme and show it to be practically efficient for the core functions of enrollment and verification"--Abstract, page 2.
546 |aIncludes abstracts in English and French.
650 0|aIdentification cards.
650 0|aDigital currency.
650 0|aBanks and banking, Central|xResearch.
650 6|aCartes d'identité.
650 6|aMonnaie électronique.
650 6|aBanques centrales|xRecherche.
7102 |aBank of Canada, |eissuing body.
830#0|aStaff working paper (Bank of Canada)|x1701-9397 ; |v2023-50.|w(CaOODSP)9.806221
85640|qPDF|s580 KB|uhttps://publications.gc.ca/collections/collection_2023/banque-bank-canada/FB3-5-2023-50-eng.pdf