"Signcryption" support (e.g. PSS-R)
Nobody has claimed this yet.
Assessment
- Difficulty
- 5/5
- Estimated time
- Over a week
- Newbie friendliness
- 25/100
- Issue type
- Feature
- Clarity
- Needs clarification
- Activity status
- Stale
- Tech stack
- rust
- Domain
- cryptography, security
Research direction
No repository file or test is named; begin with the linked comment and the cited PSS-R, EMSR-PSS, ISO/IEC 9796, and IEEE P1363 material. Clarify the supported construction and interoperability requirements before implementation; done should mean the chosen specification is supported.
Written by the indexing model from the issue text.
Description
We've had a few requests (#86, #186, #230) to support decrypting messages using a public key. Though this should be straightforward using any encryption padding as it's the reciprocal operation to public-key encryption, the desired operation in this case seems to be "signcryption", i.e. the public-key equivalent to authenticated encryption. See this comment for more information.
Bellare and Rogaway described a construction specifically for this purpose as an extension of RSASSA-PSS: Probabilistic Signature Scheme with Recovery (PSS-R) as described in Section 5 of: https://web.cs.ucdavis.edu/~rogaway/papers/exact.pdf
(it's also known as EMSR-PSS as described in section 1.2 of this paper)
There are also a few other such schemes, such as ISO/IEC 9796-1 and 9796-2.
IEEE P1363 describes a specification for PSS-R.
- Dominant language
- Rust
- Stars
- 673
- Forks
- 190
- PR merge metrics
- No merged PRs in 30d
Contributor guide
No contributing guide indexed for this repository
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
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