Paper 2019/713

Public Ledger for Sensitive Data

Riccardo Longo and Massimiliano Sala

Abstract

Satoshi Nakamoto's Blockchain allows to build publicly verifiable and almost immutable ledgers, but sometimes privacy has to be factored in. In this work an original protocol is presented that allows sensitive data to be stored on a ledger where its integrity may be publicly verified, but its privacy is preserved and owners can tightly manage the sharing of their information with efficient revocation.

Note: Second version with extended explanations, construction and proofs updated and generalised to asymmetric pairings, compatible with the more secure and efficient type-3 pairings, simplified and streamlined construction of the static ledger.

Metadata
Available format(s)
PDF
Category
Cryptographic protocols
Publication info
Published elsewhere. Major revision. Phd Thesis, arxiv
Keywords
Privacy-Preserving LedgerBlockchainEnd to End EncryptionSensitive DataRevocationConsentCloudBilinear Groups
Contact author(s)
riccardolongomath @ gmail com
History
2020-07-09: revised
2019-06-18: received
See all versions
Short URL
https://ia.cr/2019/713
License
Creative Commons Attribution
CC BY

BibTeX

@misc{cryptoeprint:2019/713,
      author = {Riccardo Longo and Massimiliano Sala},
      title = {Public Ledger for Sensitive Data},
      howpublished = {Cryptology ePrint Archive, Paper 2019/713},
      year = {2019},
      note = {\url{https://eprint.iacr.org/2019/713}},
      url = {https://eprint.iacr.org/2019/713}
}
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