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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/io/Cargo.toml
+10 -2
View File
@@ -93,8 +93,16 @@ disable_allocator = []
# runtime without first upgrading your host client!
improved_panic_error_reporting = []
# This feature adds BLS crypto primitives. It should not be used in production since
# the BLS implementation and interface may still be subject to significant change.
# This feature adds BLS crypto primitives.
# It should not be used in production since the implementation and interface may still
# be subject to significant changes.
bls-experimental = [
"sp-keystore/bls-experimental",
]
# This feature adds Bandersnatch crypto primitives.
# It should not be used in production since the implementation and interface may still
# be subject to significant changes.
bandersnatch-experimental = [
"sp-keystore/bandersnatch-experimental",
]
substrate/primitives/io/src/lib.rs
+22 -1
View File
@@ -92,6 +92,8 @@ use sp_core::{
#[cfg(feature = "std")]
use sp_keystore::KeystoreExt;
#[cfg(feature = "bandersnatch-experimental")]
use sp_core::bandersnatch;
use sp_core::{
crypto::KeyTypeId,
ecdsa, ed25519,
@@ -1190,13 +1192,13 @@ pub trait Crypto {
Ok(pubkey.serialize())
}
#[cfg(feature = "bls-experimental")]
/// Generate an `bls12-377` key for the given key type using an optional `seed` and
/// store it in the keystore.
///
/// The `seed` needs to be a valid utf8.
///
/// Returns the public key.
#[cfg(feature = "bls-experimental")]
fn bls377_generate(&mut self, id: KeyTypeId, seed: Option<Vec<u8>>) -> bls377::Public {
let seed = seed.as_ref().map(|s| std::str::from_utf8(s).expect("Seed is valid utf8!"));
self.extension::<KeystoreExt>()
@@ -1204,6 +1206,25 @@ pub trait Crypto {
.bls377_generate_new(id, seed)
.expect("`bls377_generate` failed")
}
/// Generate a `bandersnatch` key pair for the given key type using an optional
/// `seed` and store it in the keystore.
///
/// The `seed` needs to be a valid utf8.
///
/// Returns the public key.
#[cfg(feature = "bandersnatch-experimental")]
fn bandersnatch_generate(
&mut self,
id: KeyTypeId,
seed: Option<Vec<u8>>,
) -> bandersnatch::Public {
let seed = seed.as_ref().map(|s| std::str::from_utf8(s).expect("Seed is valid utf8!"));
self.extension::<KeystoreExt>()
.expect("No `keystore` associated for the current context!")
.bandersnatch_generate_new(id, seed)
.expect("`bandernatch_generate` failed")
}
}
/// Interface that provides functions for hashing with different algorithms.