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Refinements to VRF types (#14036)

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* Allow extra signing data

* Fix tests after renaming

* Rename VrfSecret/VrfVerifier to VrfSecret/VrfPublic

* Further encrapsulation of 'transcript' type to the sr25519 implementation

* Keystore sr25519 pre-output

* Leave additional custom input field hidden in the associated VrfInput type

* Fix test

* More ergonomic output_bytes

* Trigger pipeline

* Define a separated type for vrf signature data

* Fix docs

* Fix doc

* Remove annotation

* Directly use dleq_proove and dleq_verify in sr25519

* Trigger CI

* Remove cruft before merge
This commit is contained in:
Davide Galassi
2023-05-04 15:41:59 +02:00
committed by GitHub
parent 93165bc4d2
commit 3a90728de0
12 changed files with 384 additions and 138 deletions
Download Patch File Download Diff File Expand all files Collapse all files
substrate/frame/babe/src/lib.rs
+5 -9
View File
@@ -357,12 +357,12 @@ pub mod pallet {
);
}
if let Some(vrf_signature) = pre_digest.vrf_signature() {
if let Some(signature) = pre_digest.vrf_signature() {
let randomness: Option<BabeRandomness> = Authorities::<T>::get()
.get(authority_index as usize)
.and_then(|(authority, _)| {
let public = authority.as_inner_ref();
let transcript = sp_consensus_babe::make_transcript(
let transcript = sp_consensus_babe::make_vrf_transcript(
&Self::randomness(),
CurrentSlot::<T>::get(),
EpochIndex::<T>::get(),
@@ -372,16 +372,12 @@ pub mod pallet {
// execution. We don't run the verification again here to avoid slowing
// down the runtime.
debug_assert!({
use sp_core::crypto::VrfVerifier;
public.vrf_verify(&transcript, &vrf_signature)
use sp_core::crypto::VrfPublic;
public.vrf_verify(&transcript.clone().into_sign_data(), &signature)
});
public
.make_bytes(
RANDOMNESS_VRF_CONTEXT,
&transcript,
&vrf_signature.output,
)
.make_bytes(RANDOMNESS_VRF_CONTEXT, &transcript, &signature.output)
.ok()
});
substrate/frame/babe/src/mock.rs
+6 -7
View File
@@ -27,7 +27,7 @@ use frame_support::{
use pallet_session::historical as pallet_session_historical;
use sp_consensus_babe::{AuthorityId, AuthorityPair, Randomness, Slot, VrfSignature};
use sp_core::{
crypto::{KeyTypeId, Pair, VrfSigner},
crypto::{KeyTypeId, Pair, VrfSecret},
H256, U256,
};
use sp_io;
@@ -314,17 +314,16 @@ pub fn make_secondary_vrf_pre_digest(
Digest { logs: vec![log] }
}
pub fn make_vrf_output(
pub fn make_vrf_signature_and_randomness(
slot: Slot,
pair: &sp_consensus_babe::AuthorityPair,
) -> (VrfSignature, Randomness) {
let transcript = sp_consensus_babe::make_transcript(&Babe::randomness(), slot, 0);
let transcript = sp_consensus_babe::make_vrf_transcript(&Babe::randomness(), slot, 0);
let signature = pair.as_ref().vrf_sign(&transcript);
let randomness =
pair.as_ref().make_bytes(sp_consensus_babe::RANDOMNESS_VRF_CONTEXT, &transcript);
let randomness = pair
.as_ref()
.make_bytes::<Randomness>(sp_consensus_babe::RANDOMNESS_VRF_CONTEXT, &transcript);
let signature = pair.as_ref().vrf_sign(&transcript.into());
(signature, randomness)
}
substrate/frame/babe/src/tests.rs
+6 -3
View File
@@ -63,7 +63,8 @@ fn first_block_epoch_zero_start() {
ext.execute_with(|| {
let genesis_slot = Slot::from(100);
let (vrf_signature, vrf_randomness) = make_vrf_output(genesis_slot, &pairs[0]);
let (vrf_signature, vrf_randomness) =
make_vrf_signature_and_randomness(genesis_slot, &pairs[0]);
let pre_digest = make_primary_pre_digest(0, genesis_slot, vrf_signature);
@@ -111,7 +112,8 @@ fn current_slot_is_processed_on_initialization() {
ext.execute_with(|| {
let genesis_slot = Slot::from(10);
let (vrf_signature, vrf_randomness) = make_vrf_output(genesis_slot, &pairs[0]);
let (vrf_signature, vrf_randomness) =
make_vrf_signature_and_randomness(genesis_slot, &pairs[0]);
let pre_digest = make_primary_pre_digest(0, genesis_slot, vrf_signature);
System::reset_events();
@@ -140,7 +142,8 @@ where
ext.execute_with(|| {
let genesis_slot = Slot::from(10);
let (vrf_signature, vrf_randomness) = make_vrf_output(genesis_slot, &pairs[0]);
let (vrf_signature, vrf_randomness) =
make_vrf_signature_and_randomness(genesis_slot, &pairs[0]);
let pre_digest = make_pre_digest(0, genesis_slot, vrf_signature);
System::reset_events();