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"Signcryption" support (e.g. PSS-R)

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#231 25 条评论 4 个 reaction 已指派 0 人 在 GitHub 查看

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难度
5/5
预计耗时
一周以上
新手友好度
25/100
Issue 类型
功能
描述清晰度
需要澄清
活跃度
停滞
技术栈
rust
领域
cryptography, security

调研方向

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.

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描述

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.

主要语言
Rust
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派生
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