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https://github.com/kaspanet/kaspad.git
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aeb4b96560
* [NOD-1451] Implement block validator * [NOD-1451] Implement block validator * [NOD-1451] Fix merge errors * [NOD-1451] Implement block validator * [NOD-1451] Implement checkTransactionInIsolation * [NOD-1451] Copy txscript to validator * [NOD-1451] Change txscript to new design * [NOD-1451] Add checkTransactionInContext * [NOD-1451] Add checkBlockSize * [NOD-1451] Add error handling * [NOD-1451] Implement checkTransactionInContext * [NOD-1451] Add checkTransactionMass placeholder * [NOD-1451] Finish validators * [NOD-1451] Add comments and stringers * [NOD-1451] Return model.TransactionValidator interface * [NOD-1451] Premake rule errors for each "code" * [NOD-1451] Populate transaction mass * [NOD-1451] Renmae functions * [NOD-1451] Always use skipPow=false * [NOD-1451] Renames * [NOD-1451] Remove redundant types from WriteElement * [NOD-1451] Fix error message * [NOD-1451] Add checkTransactionPayload * [NOD-1451] Add ValidateProofOfWorkAndDifficulty to block validator interface * [NOD-1451] Move stringers to model * [NOD-1451] Fix error message
41 lines
1.4 KiB
Go
41 lines
1.4 KiB
Go
package hashserialization
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import (
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"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
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"github.com/kaspanet/kaspad/domain/consensus/utils/hashes"
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"github.com/pkg/errors"
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"io"
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)
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func serializeHeader(w io.Writer, header *externalapi.DomainBlockHeader) error {
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timestamp := header.TimeInMilliseconds
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numParents := len(header.ParentHashes)
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if err := writeElements(w, header.Version, uint64(numParents)); err != nil {
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return err
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}
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for _, hash := range header.ParentHashes {
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if err := WriteElement(w, hash); err != nil {
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return err
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}
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}
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return writeElements(w, header.HashMerkleRoot, header.AcceptedIDMerkleRoot, header.UTXOCommitment, timestamp, header.Bits, header.Nonce)
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}
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// HeaderHash returns the given header hash
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func HeaderHash(header *externalapi.DomainBlockHeader) *externalapi.DomainHash {
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// Encode the header and double sha256 everything prior to the number of
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// transactions.
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writer := hashes.NewHashWriter()
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err := serializeHeader(writer, header)
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if err != nil {
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// It seems like this could only happen if the writer returned an error.
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// and this writer should never return an error (no allocations or possible failures)
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// the only non-writer error path here is unknown types in `WriteElement`
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panic(errors.Wrap(err, "this should never happen. SHA256's digest should never return an error"))
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}
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res := writer.Finalize()
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return &res
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}
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