highperfocused/bitcoin
1
0
Fork 0
mirror of https://github.com/bitcoin/bitcoin.git synced 2026-01-19 06:43:45 +01:00
Code Issues Packages Projects Releases Wiki Activity

rpc: check and throw specific pubkey parsing errors in HexToPubKey

Browse Source 
In the helper `HexToPubKey`, check for three different causes of legacy
public key parsing errors (in this order):

    - pubkey is not a hex string
    - pubkey doesn't have a valid length (33 or 65 bytes) [NEW]
    - pubkey is cryptographically invalid, i.e. not on curve
      (`IsFullyValid` check)

and throw a specific error message for each one. Note that the error
code is identical for all of them (-5), so this doesn't break RPC API
compatibility.

The helper is currently used for the RPCs `createmultisig` and
`addmultisigaddress`. The length checks can be removed from the
call-sites and error message checks in the functional tests are adapted.
This commit is contained in:
Sebastian Falbesoner
2023-08-24 15:20:55 +02:00
parent b2b2b1e9e4
commit 100e8a75bf
3 changed files with 8 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
src/rpc/output_script.cpp
View File

@@ -124,11 +124,7 @@ static RPCHelpMan createmultisig()
const UniValue& keys = request.params[1].get_array();
std::vector<CPubKey> pubkeys;
for (unsigned int i = 0; i < keys.size(); ++i) {
if (IsHex(keys[i].get_str()) && (keys[i].get_str().length() == 66 || keys[i].get_str().length() == 130)) {
pubkeys.push_back(HexToPubKey(keys[i].get_str()));
} else {
throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, strprintf("Invalid public key: %s\n.", keys[i].get_str()));
}
pubkeys.push_back(HexToPubKey(keys[i].get_str()));
}
// Get the output type

7
src/rpc/util.cpp
View File

@@ -180,11 +180,14 @@ std::string HelpExampleRpcNamed(const std::string& methodname, const RPCArgList&
CPubKey HexToPubKey(const std::string& hex_in)
{
if (!IsHex(hex_in)) {
throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Invalid public key: " + hex_in);
throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Pubkey \"" + hex_in + "\" must be a hex string");
}
if (hex_in.length() != 66 && hex_in.length() != 130) {
throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Pubkey \"" + hex_in + "\" must have a length of either 33 or 65 bytes");
}
CPubKey vchPubKey(ParseHex(hex_in));
if (!vchPubKey.IsFullyValid()) {
throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Invalid public key: " + hex_in);
throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Pubkey \"" + hex_in + "\" must be cryptographically valid.");
}
return vchPubKey;
}