Expand Up @@ -33,7 +33,20 @@ #include <script/descriptor.h> // getwalletpakinfo #include <rpc/util.h> // IsBlindDestination
namespace { static secp256k1_context *secp256k1_ctx;
class CSecp256k1Init { public: CSecp256k1Init() { secp256k1_ctx = secp256k1_context_create(SECP256K1_CONTEXT_VERIFY | SECP256K1_CONTEXT_SIGN); } ~CSecp256k1Init() { secp256k1_context_destroy(secp256k1_ctx); } }; static CSecp256k1Init instance_of_csecp256k1; }
using interfaces::FoundBlock;
Expand Down Expand Up @@ -1955,6 +1968,7 @@ RPCHelpMan getwalletpakinfo() { {RPCResult::Type::STR, "bip32_counter", "next index to be used by the wallet for `sendtomainchain`"}, {RPCResult::Type::STR, "bitcoin_descriptor", "Bitcoin script descriptor loaded in the wallet for pegouts"}, {RPCResult::Type::STR, "pakentry", "PAK entry to be used at network initialization time in the form of: `pak=<bitcoin_pak>:<liquid_pak>`"}, {RPCResult::Type::STR_HEX, "liquid_pak", "pubkey corresponding to the Liquid PAK loaded in the wallet for pegouts"}, {RPCResult::Type::STR, "liquid_pak_address", "corresponding address for `liquid_pak`. Useful for `dumpprivkey` for wallet backup or transfer"}, {RPCResult::Type::ARR_FIXED, "address_lookahead", "the three next Bitcoin addresses the wallet will use for `sendtomainchain` based on the internal counter", Expand Down Expand Up @@ -1987,6 +2001,28 @@ RPCHelpMan getwalletpakinfo() const auto& desc = Parse(desc_str, provider, error);
ret.pushKV("bitcoin_descriptor", desc_str); { CPubKey masterpub = pwallet->offline_xpub.pubkey; secp256k1_pubkey masterpub_secp; int secp256k1_ret = secp256k1_ec_pubkey_parse(secp256k1_ctx, &masterpub_secp, masterpub.begin(), masterpub.size()); if (secp256k1_ret != 1) { throw JSONRPCError(RPC_WALLET_ERROR, "bitcoin_descriptor could not be parsed."); }

// Negate the pubkey secp256k1_ret = secp256k1_ec_pubkey_negate(secp256k1_ctx, &masterpub_secp);
std::vector<unsigned char> negatedpubkeybytes; negatedpubkeybytes.resize(33); size_t len = 33; secp256k1_ret = secp256k1_ec_pubkey_serialize(secp256k1_ctx, &negatedpubkeybytes[0], &len, &masterpub_secp, SECP256K1_EC_COMPRESSED); CHECK_NONFATAL(secp256k1_ret == 1); CHECK_NONFATAL(len == 33); CHECK_NONFATAL(negatedpubkeybytes.size() == 33);
ret.pushKV("pakentry", "pak=" + HexStr(negatedpubkeybytes) + ":" + HexStr(pwallet->online_key)); } ret.pushKV("liquid_pak", HexStr(pwallet->online_key)); ret.pushKV("liquid_pak_address", EncodeDestination(PKHash(pwallet->online_key)));
Expand Down