redjubjub/src/signature.rs

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// -*- mode: rust; -*-
//
// This file is part of redjubjub.
// Copyright (c) 2019-2021 Zcash Foundation
// See LICENSE for licensing information.
//
// Authors:
// - Henry de Valence <hdevalence@hdevalence.ca>
Implement the messages spec (#114) * start messages and validation * add missing docs to constants * change validation to matches, fix constant doc Co-authored-by: teor <teor@riseup.net> * fix the build * validate share_commitment * add new constants and validations * fix validation * derive serde Serialize and Deserialize in all messages structs * update created structs Co-authored-by: teor <teor@riseup.net> * fix build * define and use a new MAX_SIGNERS constant * change group_public type * add some test cases * add validation and serialization tests for SigningCommitments * add validation and serialization test to SigningPackage * change some fields order matching the spec * fix field order in tests according to last updates to the spec * implement serialize and deserialize for ParticipantId * move serde-json to dev-dependencies section * change to pub(crate) * fix serialize of VerificationKey * add assert to serialize * add note, fix typo * improve some code in tests * test serialization of individual fields * start messages and validation * add missing docs to constants * change validation to matches, fix constant doc Co-authored-by: teor <teor@riseup.net> * fix the build * validate share_commitment * add new constants and validations * fix validation * define and use a new MAX_SIGNERS constant * change group_public type * change some fields order matching the spec * change message fields to new spec * remove some non needed conversions * use a BTreeMap to guarantee the order * remove some calls to `clone()` by implementing `Copy` * change message type in frost and add validate_signatureshare test * change `share_commitment` to BTreeMap * add `serialize_signatureshare` test * add aggregatesignature tests * add some test header messages utility functions * add a setup utility * move the general serialization checks into an utility function * fi some typos * add and use a `generate_share_commitment` utility * add create_signing_commitments utility function * improve the serialization tests * make room for prop tests * add arbitrary tests for serialization * remove allow dead code from messages * fix some imports * make signature module public only to the crate * simplify a bit the frost tests * improve the generated docs * add a `prop_filter` to Header arbitrary * (ab)use proptest_derive * improve validation for Message * improve some utility functions * change frost to serialization id conversion * add a quick btreemap test * change the `MsgType` to `u32` * add no leftover bytes checks * add a full_setup utility * add map len checks Co-authored-by: teor <teor@riseup.net>
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//! Redjubjub Signatures
use crate::SigType;
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/// A RedJubJub signature.
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#[derive(Copy, Clone, Debug, Eq, PartialEq)]
#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
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pub struct Signature<T: SigType>(pub(crate) reddsa::Signature<T::RedDSASigType>);
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impl<T: SigType> From<[u8; 64]> for Signature<T> {
fn from(bytes: [u8; 64]) -> Signature<T> {
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Signature(reddsa::Signature::<_>::from(bytes))
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}
}
impl<T: SigType> From<Signature<T>> for [u8; 64] {
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fn from(sig: Signature<T>) -> [u8; 64] {
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sig.0.into()
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}
}