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Merge pull request #551 from etclabscore/merge/foundation-release/1.12
Merge/foundation release/1.12
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,67 @@ | ||
| // Copyright 2022 The go-ethereum Authors | ||
| // This file is part of the go-ethereum library. | ||
| // | ||
| // The go-ethereum library is free software: you can redistribute it and/or modify | ||
| // it under the terms of the GNU Lesser General Public License as published by | ||
| // the Free Software Foundation, either version 3 of the License, or | ||
| // (at your option) any later version. | ||
| // | ||
| // The go-ethereum library is distributed in the hope that it will be useful, | ||
| // but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| // GNU Lesser General Public License for more details. | ||
| // | ||
| // You should have received a copy of the GNU Lesser General Public License | ||
| // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>. | ||
|
|
||
| // Package merkle implements proof verifications in binary merkle trees. | ||
| package merkle | ||
|
|
||
| import ( | ||
| "crypto/sha256" | ||
| "errors" | ||
| "reflect" | ||
|
|
||
| "github.com/ethereum/go-ethereum/common" | ||
| "github.com/ethereum/go-ethereum/common/hexutil" | ||
| ) | ||
|
|
||
| // Value represents either a 32 byte leaf value or hash node in a binary merkle tree/partial proof. | ||
| type Value [32]byte | ||
|
|
||
| // Values represent a series of merkle tree leaves/nodes. | ||
| type Values []Value | ||
|
|
||
| var valueT = reflect.TypeOf(Value{}) | ||
|
|
||
| // UnmarshalJSON parses a merkle value in hex syntax. | ||
| func (m *Value) UnmarshalJSON(input []byte) error { | ||
| return hexutil.UnmarshalFixedJSON(valueT, input, m[:]) | ||
| } | ||
|
|
||
| // VerifyProof verifies a Merkle proof branch for a single value in a | ||
| // binary Merkle tree (index is a generalized tree index). | ||
| func VerifyProof(root common.Hash, index uint64, branch Values, value Value) error { | ||
| hasher := sha256.New() | ||
| for _, sibling := range branch { | ||
| hasher.Reset() | ||
| if index&1 == 0 { | ||
| hasher.Write(value[:]) | ||
| hasher.Write(sibling[:]) | ||
| } else { | ||
| hasher.Write(sibling[:]) | ||
| hasher.Write(value[:]) | ||
| } | ||
| hasher.Sum(value[:0]) | ||
| if index >>= 1; index == 0 { | ||
| return errors.New("branch has extra items") | ||
| } | ||
| } | ||
| if index != 1 { | ||
| return errors.New("branch is missing items") | ||
| } | ||
| if common.Hash(value) != root { | ||
| return errors.New("root mismatch") | ||
| } | ||
| return nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,44 @@ | ||
| // Copyright 2022 The go-ethereum Authors | ||
| // This file is part of the go-ethereum library. | ||
| // | ||
| // The go-ethereum library is free software: you can redistribute it and/or modify | ||
| // it under the terms of the GNU Lesser General Public License as published by | ||
| // the Free Software Foundation, either version 3 of the License, or | ||
| // (at your option) any later version. | ||
| // | ||
| // The go-ethereum library is distributed in the hope that it will be useful, | ||
| // but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| // GNU Lesser General Public License for more details. | ||
| // | ||
| // You should have received a copy of the GNU Lesser General Public License | ||
| // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>. | ||
|
|
||
| package params | ||
|
|
||
| const ( | ||
| EpochLength = 32 | ||
| SyncPeriodLength = 8192 | ||
|
|
||
| BLSSignatureSize = 96 | ||
| BLSPubkeySize = 48 | ||
|
|
||
| SyncCommitteeSize = 512 | ||
| SyncCommitteeBitmaskSize = SyncCommitteeSize / 8 | ||
| SyncCommitteeSupermajority = (SyncCommitteeSize*2 + 2) / 3 | ||
| ) | ||
|
|
||
| const ( | ||
| StateIndexGenesisTime = 32 | ||
| StateIndexGenesisValidators = 33 | ||
| StateIndexForkVersion = 141 | ||
| StateIndexLatestHeader = 36 | ||
| StateIndexBlockRoots = 37 | ||
| StateIndexStateRoots = 38 | ||
| StateIndexHistoricRoots = 39 | ||
| StateIndexFinalBlock = 105 | ||
| StateIndexSyncCommittee = 54 | ||
| StateIndexNextSyncCommittee = 55 | ||
| StateIndexExecPayload = 56 | ||
| StateIndexExecHead = 908 | ||
| ) |
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