More documentation

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Sarah Jamie Lewis 2021-01-29 18:24:27 -08:00
parent cab45768d5
commit 5ba94fd57e
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.gitignore vendored
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Experimental Rust implementation of using Ristretto.
A tag is a probabilistic cryptographic structure. When constructed for a given FuzzyMetaPublicKey it will pass the FuzzyMetaDetectionKey::test 100% of the time. For other public keys it will pass the test with probability gamma related to the security parameter of the system. This system provides the following security properties:
* Correctness: Valid tags for a public key for a key pair always validate when tested against the secret key
* Fuzziness: Invalid matches should produce false positives with probability p related to the security property (γ)
* Security: An adversarial server with access to Test oracle (i.e. the detection key) is unable to distinguish false positives from true positives. (Detection Ambiguity)

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#![doc(include = "../")]
use bit_vec::BitVec;
use curve25519_dalek::constants::RISTRETTO_BASEPOINT_POINT;
use curve25519_dalek::digest::Digest;
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/// An identity keypair for generating and validating fuzzy meta tags.
pub struct FuzzyMetaTagKeyPair {
/// the detection key - this can be given to adversarial servers to help probabilistically
/// filter messages (with a false-positive rate derived from γ and a 0% false negative rate)
pub detection_key: FuzzyMetaDetectionKey,
/// the public key - this can be given to people who you want to contact you
pub public_key: FuzzyMetaPublicKey,