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// Copyright (c) 2017 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#include <base58.h>
#include <keystore.h>
#include <pubkey.h>
#include <rpc/protocol.h>
#include <rpc/util.h>
#include <tinyformat.h>
#include <utilstrencodings.h>
// Converts a hex string to a public key if possible
CPubKey HexToPubKey(const std::string& hex_in)
{
if (!IsHex(hex_in)) {
throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Invalid public key: " + hex_in);
}
CPubKey vchPubKey(ParseHex(hex_in));
if (!vchPubKey.IsFullyValid()) {
throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Invalid public key: " + hex_in);
}
return vchPubKey;
}
// Retrieves a public key for an address from the given CKeyStore
CPubKey AddrToPubKey(CKeyStore* const keystore, const std::string& addr_in)
{
CTxDestination dest = DecodeDestination(addr_in);
if (!IsValidDestination(dest)) {
throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Invalid address: " + addr_in);
}
CKeyID key = GetKeyForDestination(*keystore, dest);
if (key.IsNull()) {
throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, strprintf("%s does not refer to a key", addr_in));
}
CPubKey vchPubKey;
if (!keystore->GetPubKey(key, vchPubKey)) {
throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, strprintf("no full public key for address %s", addr_in));
}
if (!vchPubKey.IsFullyValid()) {
throw JSONRPCError(RPC_INTERNAL_ERROR, "Wallet contains an invalid public key");
}
return vchPubKey;
}
// Creates a multisig redeemscript from a given list of public keys and number required.
CScript CreateMultisigRedeemscript(const int required, const std::vector<CPubKey>& pubkeys)
{
// Gather public keys
if (required < 1) {
throw JSONRPCError(RPC_INVALID_PARAMETER, "a multisignature address must require at least one key to redeem");
}
if ((int)pubkeys.size() < required) {
throw JSONRPCError(RPC_INVALID_PARAMETER, strprintf("not enough keys supplied (got %u keys, but need at least %d to redeem)", pubkeys.size(), required));
}
if (pubkeys.size() > 16) {
throw JSONRPCError(RPC_INVALID_PARAMETER, "Number of keys involved in the multisignature address creation > 16\nReduce the number");
}
CScript result = GetScriptForMultisig(required, pubkeys);
if (result.size() > MAX_SCRIPT_ELEMENT_SIZE) {
throw JSONRPCError(RPC_INVALID_PARAMETER, (strprintf("redeemScript exceeds size limit: %d > %d", result.size(), MAX_SCRIPT_ELEMENT_SIZE)));
}
return result;
}
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