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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
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substrate/client/consensus/babe/src/verification.rs
+8 -8
View File
@@ -30,11 +30,11 @@ use sp_consensus_babe::{
CompatibleDigestItem, PreDigest, PrimaryPreDigest, SecondaryPlainPreDigest,
SecondaryVRFPreDigest,
},
make_transcript, AuthorityId, AuthorityPair, AuthoritySignature,
make_vrf_sign_data, AuthorityId, AuthorityPair, AuthoritySignature,
};
use sp_consensus_slots::Slot;
use sp_core::{
crypto::{VrfVerifier, Wraps},
crypto::{VrfPublic, Wraps},
Pair,
};
use sp_runtime::{traits::Header, DigestItem};
@@ -171,9 +171,9 @@ fn check_primary_header<B: BlockT + Sized>(
return Err(babe_err(Error::BadSignature(pre_hash)))
}
let transcript = make_transcript(&epoch.randomness, pre_digest.slot, epoch_index);
let data = make_vrf_sign_data(&epoch.randomness, pre_digest.slot, epoch_index);
if !authority_id.as_inner_ref().vrf_verify(&transcript, &pre_digest.vrf_signature) {
if !authority_id.as_inner_ref().vrf_verify(&data, &pre_digest.vrf_signature) {
return Err(babe_err(Error::VrfVerificationFailed))
}
@@ -182,9 +182,9 @@ fn check_primary_header<B: BlockT + Sized>(
let score = authority_id
.as_inner_ref()
.make_bytes::<[u8; AUTHORING_SCORE_LENGTH]>(
.make_bytes::<AUTHORING_SCORE_LENGTH>(
AUTHORING_SCORE_VRF_CONTEXT,
&transcript,
&data.as_ref(),
&pre_digest.vrf_signature.output,
)
.map(u128::from_le_bytes)
@@ -253,9 +253,9 @@ fn check_secondary_vrf_header<B: BlockT>(
return Err(Error::BadSignature(pre_hash))
}
let transcript = make_transcript(&epoch.randomness, pre_digest.slot, epoch_index);
let data = make_vrf_sign_data(&epoch.randomness, pre_digest.slot, epoch_index);
if !author.as_inner_ref().vrf_verify(&transcript, &pre_digest.vrf_signature) {
if !author.as_inner_ref().vrf_verify(&data, &pre_digest.vrf_signature) {
return Err(Error::VrfVerificationFailed)
}