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More secure Signed implementation (#2963)

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* Remove signature verification in backing.

`SignedFullStatement` now signals that the signature has already been
checked.

* Remove unused check_payload function.

* Introduced unchecked signed variants.

* Fix inclusion to use unchecked variant.

* More unchecked variants.

* Use unchecked variants in protocols.

* Start fixing statement-distribution.

* Fixup statement distribution.

* Fix inclusion.

* Fix warning.

* Fix backing properly.

* Fix bitfield distribution.

* Make crypto store optional for `RuntimeInfo`.

* Factor out utility functions.

* get_group_rotation_info

* WIP: Collator cleanup + check signatures.

* Convenience signature checking functions.

* Check signature on collator-side.

* Fix warnings.

* Fix collator side tests.

* Get rid of warnings.

* Better Signed/UncheckedSigned implementation.

Also get rid of Encode/Decode for Signed! *party*

* Get rid of dead code.

* Move Signed in its own module.

* into_checked -> try_into_checked

* Fix merge.
This commit is contained in:
Robert Klotzner
2021-05-03 21:41:14 +02:00
committed by GitHub
parent c0fcaa6bd9
commit 0dbdfef95e
24 changed files with 1016 additions and 868 deletions
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polkadot/node/primitives/src/lib.rs
+4 -1
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@@ -33,7 +33,7 @@ pub use sp_consensus_babe::{
Epoch as BabeEpoch, BabeEpochConfiguration, AllowedSlots as BabeAllowedSlots,
};
use polkadot_primitives::v1::{CandidateCommitments, CandidateHash, CollatorPair, CommittedCandidateReceipt, CompactStatement, EncodeAs, Hash, HeadData, Id as ParaId, OutboundHrmpMessage, PersistedValidationData, Signed, UpwardMessage, ValidationCode, BlakeTwo256, HashT, ValidatorIndex};
use polkadot_primitives::v1::{BlakeTwo256, CandidateCommitments, CandidateHash, CollatorPair, CommittedCandidateReceipt, CompactStatement, EncodeAs, Hash, HashT, HeadData, Id as ParaId, OutboundHrmpMessage, PersistedValidationData, Signed, UncheckedSigned, UpwardMessage, ValidationCode, ValidatorIndex};
pub use polkadot_parachain::primitives::BlockData;
pub mod approval;
@@ -114,6 +114,9 @@ impl EncodeAs<CompactStatement> for Statement {
/// Only the compact `SignedStatement` is suitable for submission to the chain.
pub type SignedFullStatement = Signed<Statement, CompactStatement>;
/// Variant of `SignedFullStatement` where the signature has not yet been verified.
pub type UncheckedSignedFullStatement = UncheckedSigned<Statement, CompactStatement>;
/// Candidate invalidity details
#[derive(Debug)]
pub enum InvalidCandidate {