Function AddAndGetMultisigDestination

src/rpc/util.cpp:235–266

Creates a multisig address from a given list of public keys, number of signatures required, and the address type

// Creates a multisig address from a given list of public keys, number of signatures required, and the address type
CTxDestination AddAndGetMultisigDestination(const int required, const std::vector<CPubKey>& pubkeys, OutputType type, FlatSigningProvider& keystore, CScript& script_out)
{
    // 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() > MAX_PUBKEYS_PER_MULTISIG) {
        throw JSONRPCError(RPC_INVALID_PARAMETER, strprintf("Number of keys involved in the multisignature address creation > %d\nReduce the number", MAX_PUBKEYS_PER_MULTISIG));
    }

    script_out = GetScriptForMultisig(required, pubkeys);

    // Check if any keys are uncompressed. If so, the type is legacy
    for (const CPubKey& pk : pubkeys) {
        if (!pk.IsCompressed()) {
            type = OutputType::LEGACY;
            break;
        }
    }

    if (type == OutputType::LEGACY && script_out.size() > MAX_SCRIPT_ELEMENT_SIZE) {
        throw JSONRPCError(RPC_INVALID_PARAMETER, (strprintf("redeemScript exceeds size limit: %d > %d", script_out.size(), MAX_SCRIPT_ELEMENT_SIZE)));
    }

    // Make the address
    CTxDestination dest = AddAndGetDestinationForScript(keystore, script_out, type);

    return dest;
}

class DescribeAddressVisitor
{