https://github.com/dyne/sd-bls

Privacy Preserving Selective Disclosure and Issuer Revocation of Verifiable Credentials
https://github.com/dyne/sd-bls

bls crypto privacy privacy-enhancing-technologies revocation selective-disclosure verifiable-credentials

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Privacy Preserving Selective Disclosure and Issuer Revocation of Verifiable Credentials

• Host: GitHub
• URL: https://github.com/dyne/sd-bls
• Owner: dyne
• Created: 2024-05-07T13:32:01.000Z (8 months ago)
• Default Branch: master
• Last Pushed: 2024-08-16T01:30:47.000Z (5 months ago)
• Last Synced: 2024-08-16T02:44:00.531Z (5 months ago)
• Topics: bls, crypto, privacy, privacy-enhancing-technologies, revocation, selective-disclosure, verifiable-credentials
• Language: TeX
• Homepage: https://arxiv.org/abs/2406.19035v1
• Size: 491 KB
• Stars: 0
• Watchers: 3
• Forks: 1
• Open Issues: 2
• Metadata Files:
  • Readme: README.md

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README

        
# Privacy Preserving Selective Disclosure and Issuer Revocation of Verifiable Credentials

It is of critical importance to design digital identity systems that

ensure the privacy of citizens as well protect them from state

corruption as the identity issuer. Unfortunately, what Europe and USA

state organizations are currently developing does not offer such basic

protections. As a solution we introduce a method for untraceable

selective disclosure and privacy preserving revocation of digital

credentials, utilizing the unique homomorphic characteristics of

second order Elliptic Curves and Boneh-Lynn-Shacham (BLS) signatures

operated on them. Our approach ensures that users can selectively

reveal only the necessary attributes, while protecting their privacy

across multiple presentations and against colluding verifiers. Since

we also want to protect users from issuer corruption, we apply a

threshold for credential issuance and revocation to mandate a

collective agreement among multiple issuers. Finally, our method of

revocation does not give out any information on the identity of

holders of revoked credentials.

## Add references

Add any reference used in text inside the [references.bib](https://github.com/dyne/sd-bls/blob/master/references.bib) file in BibTeX format.

Add references inside the text using the `\cite{..}` tag, i.e. `\cite{bls381-12}` for the article named `bls381-12` inside the `references.bib` file.

## Build from source

Do an `apt-get install` of the following packages:

```

 texlive-extra-utils texlive-latex-recommended texlive-font-utils \

 texlive-fonts-extra texlive-latex-extra texlive-fonts-recommended \

 texlive-science poppler-utils epstool

```

Then do `make` to build the latest `sd-bls.pdf` from this repo.