47 lines
956 B
Go
47 lines
956 B
Go
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package common
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import (
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"crypto/sha256"
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"encoding/json"
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"math/big"
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"github.com/ethereum/go-ethereum/common"
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"github.com/certusone/wormhole/bridge/pkg/vaa"
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)
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type ChainLock struct {
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TxHash common.Hash
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SourceAddress vaa.Address
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TargetAddress vaa.Address
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SourceChain vaa.ChainID
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TargetChain vaa.ChainID
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TokenChain vaa.ChainID
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TokenAddress vaa.Address
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Amount *big.Int
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}
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// Hash returns a deterministic hash of the given ChainLock, meant to be used
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// as primary key for the distributed round of signing.
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//
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// TODO: the ETH contract is missing a nonce, so it's not yet deterministic
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func (l *ChainLock) Hash() []byte {
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// TODO: json.Marshal being deterministic is an implementation detail - what guarantees do we need?
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// We do not necessarily need stable serialization across releases, but they do need to be unique.
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b, err := json.Marshal(l)
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if err != nil {
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panic(err)
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}
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h := sha256.New()
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h.Write(b)
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return h.Sum(nil)
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}
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