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Refactor EIP-712 signature verification (#1397)

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* [WIP] EIP-712 Signature Refactor

* Debug and add ante tests

* Add tests for failure cases

* Add changelog entry

* Code cleanup

* Add tests for MsgDelegate and MsgWithdrawDelegationReward

* Update ethereum/eip712/encoding.go

Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com>

* Update ethereum/eip712/encoding.go

Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com>

* Update ethereum/eip712/encoding.go

Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com>

* Update ethereum/eip712/encoding.go

Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com>

* Update ethereum/eip712/encoding.go

Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com>

* Update ethereum/eip712/encoding.go

Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com>

* Code cleanup

* Update ethereum/eip712/encoding.go

Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com>

* Minor codefix

* Update ethereum/eip712/encoding.go

* Minor code revision updates

* Refactor EIP712 unit tests to use test suite

* Address import cycle and implement minor refactors

* Fix lint issues

* Add EIP712 unit suite test function

* Update ethereum/eip712/encoding.go

Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com>

* Update ethereum/eip712/encoding.go

Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com>

* Update ethereum/eip712/encoding.go

Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com>

* Add minor refactors; increase test coverage

* Correct ante_test for change in payload

* Add single-signer util and tests

* Update ethereum/eip712/encoding.go

* Update ethereum/eip712/encoding.go

* fix build

Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com>
Co-authored-by: Freddy Caceres <facs95@gmail.com>
This commit is contained in:
Austin Chandra
2022-11-07 16:50:25 +00:00
committed by GitHub
co-authored by Federico Kunze Küllmer Freddy Caceres
parent 41425fc6d4
commit cb632c6bef
8 changed files with 1126 additions and 9 deletions
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crypto/ethsecp256k1/ethsecp256k1.go
+20 -2
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@@ -10,7 +10,7 @@ import (
cryptotypes "github.com/cosmos/cosmos-sdk/crypto/types"
sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
"github.com/ethereum/go-ethereum/crypto"
"github.com/evmos/ethermint/ethereum/eip712"
tmcrypto "github.com/tendermint/tendermint/crypto"
)
@@ -203,10 +203,28 @@ func (pubKey *PubKey) UnmarshalAminoJSON(bz []byte) error {
// VerifySignature verifies that the ECDSA public key created a given signature over
// the provided message. It will calculate the Keccak256 hash of the message
// prior to verification.
// prior to verification and approve verification if the signature can be verified
// from either the original message or its EIP-712 representation.
//
// CONTRACT: The signature should be in [R || S] format.
func (pubKey PubKey) VerifySignature(msg, sig []byte) bool {
return pubKey.verifySignatureECDSA(msg, sig) || pubKey.verifySignatureAsEIP712(msg, sig)
}
// Verifies the signature as an EIP-712 signature by first converting the message payload
// to an EIP-712 hashed object, performing ECDSA verification on the hash. This is to support
// signing a Cosmos payload using EIP-712.
func (pubKey PubKey) verifySignatureAsEIP712(msg, sig []byte) bool {
eip712Hash, err := eip712.GetEIP712HashForMsg(msg)
if err != nil {
return false
}
return pubKey.verifySignatureECDSA(eip712Hash, sig)
}
// Perform standard ECDSA signature verification for the given raw bytes and signature.
func (pubKey PubKey) verifySignatureECDSA(msg, sig []byte) bool {
if len(sig) == crypto.SignatureLength {
// remove recovery ID (V) if contained in the signature
sig = sig[:len(sig)-1]