mirror of
https://github.com/ethereum/go-ethereum.git
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e063f67f34
* implement verify functions * Use go routine to call verifyMsgSignature * verify timeout msg shall use round from the msg * add comment for verifyQC
70 lines
1.9 KiB
Go
70 lines
1.9 KiB
Go
package engine_v2
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import (
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"github.com/XinFinOrg/XDPoSChain/common"
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"github.com/XinFinOrg/XDPoSChain/consensus/XDPoS/utils"
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"github.com/XinFinOrg/XDPoSChain/core/types"
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"github.com/XinFinOrg/XDPoSChain/crypto"
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"github.com/XinFinOrg/XDPoSChain/crypto/sha3"
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"github.com/XinFinOrg/XDPoSChain/log"
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"github.com/XinFinOrg/XDPoSChain/rlp"
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lru "github.com/hashicorp/golang-lru"
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)
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func sigHash(header *types.Header) (hash common.Hash) {
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hasher := sha3.NewKeccak256()
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err := rlp.Encode(hasher, []interface{}{
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header.ParentHash,
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header.UncleHash,
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header.Coinbase,
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header.Root,
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header.TxHash,
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header.ReceiptHash,
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header.Bloom,
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header.Difficulty,
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header.Number,
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header.GasLimit,
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header.GasUsed,
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header.Time,
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header.Extra,
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header.MixDigest,
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header.Nonce,
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header.Validators,
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header.Penalties,
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})
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if err != nil {
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log.Debug("Fail to encode", err)
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}
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hasher.Sum(hash[:0])
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return hash
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}
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func ecrecover(header *types.Header, sigcache *lru.ARCCache) (common.Address, error) {
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// If the signature's already cached, return that
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hash := header.Hash()
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if address, known := sigcache.Get(hash); known {
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return address.(common.Address), nil
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}
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// Recover the public key and the Ethereum address
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pubkey, err := crypto.Ecrecover(sigHash(header).Bytes(), header.Validator)
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if err != nil {
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return common.Address{}, err
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}
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var signer common.Address
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copy(signer[:], crypto.Keccak256(pubkey[1:])[12:])
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sigcache.Add(hash, signer)
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return signer, nil
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}
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// Get masternodes address from checkpoint Header. Only used for v1 last block
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func decodeMasternodesFromHeaderExtra(checkpointHeader *types.Header) []common.Address {
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masternodes := make([]common.Address, (len(checkpointHeader.Extra)-utils.ExtraVanity-utils.ExtraSeal)/common.AddressLength)
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for i := 0; i < len(masternodes); i++ {
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copy(masternodes[i][:], checkpointHeader.Extra[utils.ExtraVanity+i*common.AddressLength:])
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}
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return masternodes
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}
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