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https://github.com/kaspanet/kaspad.git
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40342eb45a
* [NOD-275] Moved getBlockTemplate and related functionality to a separate file. * [NOD-275] Started moving handlers to separate files. * [NOD-275] Fixed merge errors. * [NOD-275] Moved all handlers out of rpcserver.go. * [NOD-275] Moved non-shared functions out of rpcserver.go. * [NOD-275] Moved handleGetAllManualNodesInfo to a separate file. * [NOD-275] Moved handlers out of rpcwebsocket.go to separate files. * [NOD-275] Fixed import error. * [NOD-275] Renamed all handler files to include underscores. * [NOD-275] Moved common rpc helper functions to common.go.
75 lines
2.2 KiB
Go
75 lines
2.2 KiB
Go
package rpc
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import (
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"bytes"
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"encoding/base64"
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"github.com/daglabs/btcd/btcec"
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"github.com/daglabs/btcd/btcjson"
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"github.com/daglabs/btcd/util"
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"github.com/daglabs/btcd/util/daghash"
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"github.com/daglabs/btcd/wire"
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)
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// handleVerifyMessage implements the verifyMessage command.
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func handleVerifyMessage(s *Server, cmd interface{}, closeChan <-chan struct{}) (interface{}, error) {
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c := cmd.(*btcjson.VerifyMessageCmd)
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// Decode the provided address.
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params := s.cfg.DAGParams
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addr, err := util.DecodeAddress(c.Address, params.Prefix)
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if err != nil {
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return nil, &btcjson.RPCError{
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Code: btcjson.ErrRPCInvalidAddressOrKey,
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Message: "Invalid address or key: " + err.Error(),
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}
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}
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// Only P2PKH addresses are valid for signing.
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if _, ok := addr.(*util.AddressPubKeyHash); !ok {
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return nil, &btcjson.RPCError{
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Code: btcjson.ErrRPCType,
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Message: "Address is not a pay-to-pubkey-hash address",
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}
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}
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// Decode base64 signature.
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sig, err := base64.StdEncoding.DecodeString(c.Signature)
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if err != nil {
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return nil, &btcjson.RPCError{
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Code: btcjson.ErrRPCParse.Code,
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Message: "Malformed base64 encoding: " + err.Error(),
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}
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}
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// Validate the signature - this just shows that it was valid at all.
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// we will compare it with the key next.
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var buf bytes.Buffer
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wire.WriteVarString(&buf, "Bitcoin Signed Message:\n")
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wire.WriteVarString(&buf, c.Message)
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expectedMessageHash := daghash.DoubleHashB(buf.Bytes())
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pk, wasCompressed, err := btcec.RecoverCompact(btcec.S256(), sig,
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expectedMessageHash)
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if err != nil {
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// Mirror Bitcoin Core behavior, which treats error in
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// RecoverCompact as invalid signature.
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return false, nil
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}
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// Reconstruct the pubkey hash.
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var serializedPK []byte
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if wasCompressed {
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serializedPK = pk.SerializeCompressed()
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} else {
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serializedPK = pk.SerializeUncompressed()
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}
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address, err := util.NewAddressPubKeyHashFromPublicKey(serializedPK, params.Prefix)
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if err != nil {
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// Again mirror Bitcoin Core behavior, which treats error in public key
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// reconstruction as invalid signature.
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return false, nil
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}
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// Return boolean if addresses match.
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return address.EncodeAddress() == c.Address, nil
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}
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