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Bandersnatch VRF (#14412)

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* Introduce bandersnatch vrf

* Some documentation

* Fix tests

* Fix docs refs

* Some more docs

* Comments about key derivation

* Make clippy happy

* Fix ring context enc/dec test

* Fix docs

* Switch to upstream ring-vrf

* Use sub-domains to construct VrfInput

* Bandersnatch VRF experimental feature

* Restore upstream dep

* Fix feature flags

* Apply typo fix

Co-authored-by: Anton <anton.kalyaev@gmail.com>

* Bump bandersnatch-vrfs

* Weiestrass form has been selected

* Rename bandersnatch testing app crypto id

* Support for seed recovery

* Clarified domain size <-> key size relationship

* cargo fmt

* Trigger CI

* Some required tweaks to crypto types

* Remove leftovers from Cargo.toml

* Remove some TODO notes

* Simplification of structs construction

* Trigger CI

* Apply review suggestion

Co-authored-by: Koute <koute@users.noreply.github.com>

* Docs typo

* Fix keystore tests

* Consistence

* Add ref to git rependency

* Static check of MAX_VRF_IOS value

* Clarify behavior for out of ring keys signatures

* Add test for ring-vrf to the keystore

* Fix docs

---------

Co-authored-by: Anton <anton.kalyaev@gmail.com>
Co-authored-by: Koute <koute@users.noreply.github.com>
This commit is contained in:
Davide Galassi
2023-08-09 17:09:47 +02:00
committed by GitHub
parent 8321cee4f5
commit 314109d87b
23 changed files with 1900 additions and 59 deletions
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substrate/primitives/core/src/sr25519.rs
+2 -2
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@@ -504,7 +504,7 @@ impl TraitPair for Pair {
self.0.sign(context.bytes(message)).into()
}
fn verify<M: AsRef<[u8]>>(sig: &Self::Signature, message: M, pubkey: &Self::Public) -> bool {
fn verify<M: AsRef<[u8]>>(sig: &Signature, message: M, pubkey: &Public) -> bool {
let Ok(signature) = schnorrkel::Signature::from_bytes(sig.as_ref()) else { return false };
let Ok(public) = PublicKey::from_bytes(pubkey.as_ref()) else { return false };
public.verify_simple(SIGNING_CTX, message.as_ref(), &signature).is_ok()
@@ -568,7 +568,7 @@ pub mod vrf {
impl VrfTranscript {
/// Build a new transcript instance.
///
/// Each `data` element is a tuple `(domain, message)` composing the transcipt.
/// Each `data` element is a tuple `(domain, message)` used to build the transcript.
pub fn new(label: &'static [u8], data: &[(&'static [u8], &[u8])]) -> Self {
let mut transcript = merlin::Transcript::new(label);
data.iter().for_each(|(l, b)| transcript.append_message(l, b));