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Merge #17577: refactor: deduplicate the message sign/verify code

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e193a84fb2 Refactor message hashing into a utility function (Jeffrey Czyz)
f8f0d9893d Deduplicate the message signing code (Vasil Dimov)
2ce3447eb1 Deduplicate the message verifying code (Vasil Dimov)

Pull request description:

  The message signing and verifying logic was replicated in a few places
  in the code. Consolidate in a newly introduced `MessageSign()` and
  `MessageVerify()` and add unit tests for them.

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    ACK e193a84fb2
  instagibbs:
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  meshcollider:
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Tree-SHA512: b0e02a7d4623a98c8f8c77627af1725e6df07700de4630c2f75da6beacdf55414c38ba147bc6d2a757491ab07c827dddf93e8632fe600478760e255714ddab88
This commit is contained in:
Samuel Dobson
2020-02-25 23:24:54 +13:00
parent a674e89d27 e193a84fb2
commit 03f98b15ad
9 changed files with 326 additions and 83 deletions
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44
src/rpc/misc.cpp
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@@ -13,9 +13,9 @@
#include <scheduler.h>
#include <script/descriptor.h>
#include <util/check.h>
#include <util/message.h> // For MessageSign(), MessageVerify()
#include <util/strencodings.h>
#include <util/system.h>
#include <util/validation.h>
#include <stdint.h>
#include <tuple>
@@ -278,31 +278,21 @@ static UniValue verifymessage(const JSONRPCRequest& request)
std::string strSign = request.params[1].get_str();
std::string strMessage = request.params[2].get_str();
CTxDestination destination = DecodeDestination(strAddress);
if (!IsValidDestination(destination)) {
switch (MessageVerify(strAddress, strSign, strMessage)) {
case MessageVerificationResult::ERR_INVALID_ADDRESS:
throw JSONRPCError(RPC_TYPE_ERROR, "Invalid address");
}
const PKHash *pkhash = boost::get<PKHash>(&destination);
if (!pkhash) {
case MessageVerificationResult::ERR_ADDRESS_NO_KEY:
throw JSONRPCError(RPC_TYPE_ERROR, "Address does not refer to key");
case MessageVerificationResult::ERR_MALFORMED_SIGNATURE:
throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Malformed base64 encoding");
case MessageVerificationResult::ERR_PUBKEY_NOT_RECOVERED:
case MessageVerificationResult::ERR_NOT_SIGNED:
return false;
case MessageVerificationResult::OK:
return true;
}
bool fInvalid = false;
std::vector<unsigned char> vchSig = DecodeBase64(strSign.c_str(), &fInvalid);
if (fInvalid)
throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Malformed base64 encoding");
CHashWriter ss(SER_GETHASH, 0);
ss << strMessageMagic;
ss << strMessage;
CPubKey pubkey;
if (!pubkey.RecoverCompact(ss.GetHash(), vchSig))
return false;
return (pubkey.GetID() == *pkhash);
return false;
}
static UniValue signmessagewithprivkey(const JSONRPCRequest& request)
@@ -334,15 +324,13 @@ static UniValue signmessagewithprivkey(const JSONRPCRequest& request)
throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Invalid private key");
}
CHashWriter ss(SER_GETHASH, 0);
ss << strMessageMagic;
ss << strMessage;
std::string signature;
std::vector<unsigned char> vchSig;
if (!key.SignCompact(ss.GetHash(), vchSig))
if (!MessageSign(key, strMessage, signature)) {
throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Sign failed");
}
return EncodeBase64(vchSig.data(), vchSig.size());
return signature;
}
static UniValue setmocktime(const JSONRPCRequest& request)