Dates are inconsistent

Dates are inconsistent

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Possible spell-corrected query: mars-PKE
2023/213 (PDF) Last updated: 2024-01-09
Deniable Authentication when Signing Keys Leak
Suvradip Chakraborty, Dennis Hofheinz, Ueli Maurer, Guilherme Rito
Public-key cryptography

Deniable Authentication is a highly desirable property for secure messaging protocols: it allows a sender Alice to authentically transmit messages to a designated receiver Bob in such a way that only Bob gets convinced that Alice indeed sent these messages. In particular, it guarantees that even if Bob tries to convince a (non-designated) party Judy that Alice sent some message, and even if Bob gives Judy his own secret key, Judy will not be convinced: as far as Judy knows, Bob could be...

2022/256 (PDF) Last updated: 2024-01-09
Multi-Designated Receiver Signed Public Key Encryption
Ueli Maurer, Christopher Portmann, Guilherme Rito
Public-key cryptography

This paper introduces a new type of public-key encryption scheme, called Multi-Designated Receiver Signed Public Key Encryption (MDRS-PKE), which allows a sender to select a set of designated receivers and both encrypt and sign a message that only these receivers will be able to read and authenticate (confidentiality and authenticity). An MDRS-PKE scheme provides several additional security properties which allow for a fundamentally new type of communication not considered before. Namely, it...

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