To reduce the privacy leakage of these outsourced detection schemes, we propose a new cryptographic primitive: fuzzy message detection (FMD). Like a standard message detection scheme, a fuzzy message detection scheme allows senders to encrypt ag ciphertexts that recipients can detect using a secret key.

This paper introduces a new cryptographic primitive known as a fuzzy message detection scheme (FMD). FMD is a tool that facilitates receiver anonymity in store-and-forward messaging systems where a single party or small collection of parties aggregates messages for a …

2023年7月25日 · In this work, we formalize the underlying cryptographic abstraction of this mechanism, namely, stealth signatures with formal game-based definitions. We show a surprising application of our notions to passwordless authentication defined in the Fast IDentity Online (FIDO) standard.

2021年9月14日 · Fuzzy Message Detection (FMD) is a recent cryptographic primitive invented by Beck et al. (CCS'21) where an untrusted server performs coarse message filtering for its clients in a recipient-anonymous way.

Fuzzy Message Detection (FMD) is a recent cryptographic primitive invented by Beck et al. (CCS’21) where an untrusted server performs coarse message ltering for its clients in a recipient-anonymous

Fuzzy Message Detection (FMD) is a recent cryptographic primitive invented by Beck et al. (CCS’21) where an untrusted server performs coarse message filtering for its clients in a recipient-anonymous way.

(1) We introduce the notion of a fuzzy message detection (FMD) scheme to address the challenge of efficient message detec-tion in privacy-preserving store-and-forward systems. We formalize its correctness and security under both CPA and CCA attacks. (2) We provide several constructions for FMD schemes, includ-

2022年10月22日 · Fuzzy Message Detection (FMD) is a recent cryptographic primitive invented by Beck et al. (CCS’21) where an untrusted server performs coarse message filtering for its clients in a recipient-anonymous way. In FMD—besides the true positive...

Fuzzy Message Detection (FMD) is a scheme that allows senders to "tag" messages using the public key of a recipient, and recipients to check whether a message is intended for them using their secret key. Compared to trivial implementations of such a tagging scheme using normal PKE, FMD also allows the recipient to outsource this check to a ...

2024年8月27日 · Fuzzy Message Detection (FMD) is a privacy-preserving protocol where an untrusted server performs message anonymously filtering for its clients. To prevent the server from linking the sender and the receiver, the latter can set how much cover traffic they should download along with genuine messages.