descriptor_tests.cpp

// Copyright (c) 2018 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 <vector>
#include <string>
#include <script/sign.h>
#include <script/standard.h>
#include <test/util/setup_common.h>
#include <boost/test/unit_test.hpp>
#include <script/descriptor.h>
#include <util/strencodings.h>

namespace {

void CheckUnparsable(const std::string& prv, const std::string& pub, const std::string& expected_error)
{
    FlatSigningProvider keys_priv, keys_pub;
    std::string error;
    auto parse_priv = Parse(prv, keys_priv, error);
    auto parse_pub = Parse(pub, keys_pub, error);
    BOOST_CHECK_MESSAGE(!parse_priv, prv);
    BOOST_CHECK_MESSAGE(!parse_pub, pub);
    BOOST_CHECK(error == expected_error);
}

constexpr int DEFAULT = 0;
constexpr int RANGE = 1; // Expected to be ranged descriptor
constexpr int HARDENED = 2; // Derivation needs access to private keys
constexpr int UNSOLVABLE = 4; // This descriptor is not expected to be solvable
constexpr int SIGNABLE = 8; // We can sign with this descriptor (this is not true when actual BIP32 derivation is used, as that's not integrated in our signing code)

/** Compare two descriptors. If only one of them has a checksum, the checksum is ignored. */
bool EqualDescriptor(std::string a, std::string b)
{
    bool a_check = (a.size() > 9 && a[a.size() - 9] == '#');
    bool b_check = (b.size() > 9 && b[b.size() - 9] == '#');
    if (a_check != b_check) {
        if (a_check) a = a.substr(0, a.size() - 9);
        if (b_check) b = b.substr(0, b.size() - 9);
    }
    return a == b;
}

std::string UseHInsteadOfApostrophe(const std::string& desc)
{
    std::string ret = desc;
    while (true) {
        auto it = ret.find('\'');
        if (it == std::string::npos) break;
        ret[it] = 'h';
    }

    // GetDescriptorChecksum returns "" if the checksum exists but is bad.
    // Switching apostrophes with 'h' breaks the checksum if it exists - recalculate it and replace the broken one.
    if (GetDescriptorChecksum(ret) == "") {
        ret = ret.substr(0, desc.size() - 9);
        ret += std::string("#") + GetDescriptorChecksum(ret);
    }
    return ret;
}

const std::set<std::vector<uint32_t>> ONLY_EMPTY{{}};

void DoCheck(const std::string& prv, const std::string& pub, int flags, const std::vector<std::vector<std::string>>& scripts, const std::set<std::vector<uint32_t>>& paths = ONLY_EMPTY,
    bool replace_apostrophe_with_h_in_prv=false, bool replace_apostrophe_with_h_in_pub=false)
{
    FlatSigningProvider keys_priv, keys_pub;
    std::set<std::vector<uint32_t>> left_paths = paths;
    std::string error;

    std::unique_ptr<Descriptor> parse_priv;
    std::unique_ptr<Descriptor> parse_pub;
    // Check that parsing succeeds.
    if (replace_apostrophe_with_h_in_prv) {
        parse_priv = Parse(UseHInsteadOfApostrophe(prv), keys_priv, error);
    } else {
        parse_priv = Parse(prv, keys_priv, error);
    }
    if (replace_apostrophe_with_h_in_pub) {
        parse_pub = Parse(UseHInsteadOfApostrophe(pub), keys_pub, error);
    } else {
        parse_pub = Parse(pub, keys_pub, error);
    }

    BOOST_CHECK(parse_priv);
    BOOST_CHECK(parse_pub);

    // Check private keys are extracted from the private version but not the public one.
    BOOST_CHECK(keys_priv.keys.size());
    BOOST_CHECK(!keys_pub.keys.size());

    // Check that both versions serialize back to the public version.
    std::string pub1 = parse_priv->ToString();
    std::string pub2 = parse_pub->ToString();
    BOOST_CHECK(EqualDescriptor(pub, pub1));
    BOOST_CHECK(EqualDescriptor(pub, pub2));

    // Check that both can be serialized with private key back to the private version, but not without private key.
    std::string prv1;
    BOOST_CHECK(parse_priv->ToPrivateString(keys_priv, prv1));
    BOOST_CHECK(EqualDescriptor(prv, prv1));
    BOOST_CHECK(!parse_priv->ToPrivateString(keys_pub, prv1));
    BOOST_CHECK(parse_pub->ToPrivateString(keys_priv, prv1));
    BOOST_CHECK(EqualDescriptor(prv, prv1));
    BOOST_CHECK(!parse_pub->ToPrivateString(keys_pub, prv1));

    // Check whether IsRange on both returns the expected result
    BOOST_CHECK_EQUAL(parse_pub->IsRange(), (flags & RANGE) != 0);
    BOOST_CHECK_EQUAL(parse_priv->IsRange(), (flags & RANGE) != 0);

    // * For ranged descriptors,  the `scripts` parameter is a list of expected result outputs, for subsequent
    //   positions to evaluate the descriptors on (so the first element of `scripts` is for evaluating the
    //   descriptor at 0; the second at 1; and so on). To verify this, we evaluate the descriptors once for
    //   each element in `scripts`.
    // * For non-ranged descriptors, we evaluate the descriptors at positions 0, 1, and 2, but expect the
    //   same result in each case, namely the first element of `scripts`. Because of that, the size of
    //   `scripts` must be one in that case.
    if (!(flags & RANGE)) assert(scripts.size() == 1);
    size_t max = (flags & RANGE) ? scripts.size() : 3;

    // Iterate over the position we'll evaluate the descriptors in.
    for (size_t i = 0; i < max; ++i) {
        // Call the expected result scripts `ref`.
        const auto& ref = scripts[(flags & RANGE) ? i : 0];
        // When t=0, evaluate the `prv` descriptor; when t=1, evaluate the `pub` descriptor.
        for (int t = 0; t < 2; ++t) {
            // When the descriptor is hardened, evaluate with access to the private keys inside.
            const FlatSigningProvider& key_provider = (flags & HARDENED) ? keys_priv : keys_pub;

            // Evaluate the descriptor selected by `t` in poisition `i`.
            FlatSigningProvider script_provider, script_provider_cached;
            std::vector<CScript> spks, spks_cached;
            std::vector<unsigned char> cache;
            BOOST_CHECK((t ? parse_priv : parse_pub)->Expand(i, key_provider, spks, script_provider, &cache));

            // Compare the output with the expected result.
            BOOST_CHECK_EQUAL(spks.size(), ref.size());

            // Try to expand again using cached data, and compare.
            BOOST_CHECK(parse_pub->ExpandFromCache(i, cache, spks_cached, script_provider_cached));
            BOOST_CHECK(spks == spks_cached);
            BOOST_CHECK(script_provider.pubkeys == script_provider_cached.pubkeys);
            BOOST_CHECK(script_provider.scripts == script_provider_cached.scripts);
            BOOST_CHECK(script_provider.origins == script_provider_cached.origins);

            // For each of the produced scripts, verify solvability, and when possible, try to sign a transaction spending it.
            for (size_t n = 0; n < spks.size(); ++n) {
                BOOST_CHECK_EQUAL(ref[n], HexStr(spks[n]));

                if (flags & SIGNABLE) {
                    CMutableTransaction spend;
                    spend.vin.resize(1);
                    spend.vout.resize(1);
                    BOOST_CHECK_MESSAGE(SignSignature(Merge(keys_priv, script_provider), spks[n], spend, 0, 1, SIGHASH_ALL), prv);
                }

                /* Infer a descriptor from the generated script, and verify its solvability and that it roundtrips. */
                auto inferred = InferDescriptor(spks[n], script_provider);
                BOOST_CHECK_EQUAL(inferred->IsSolvable(), !(flags & UNSOLVABLE));
                std::vector<CScript> spks_inferred;
                FlatSigningProvider provider_inferred;
                BOOST_CHECK(inferred->Expand(0, provider_inferred, spks_inferred, provider_inferred));
                BOOST_CHECK_EQUAL(spks_inferred.size(), 1);
                BOOST_CHECK(spks_inferred[0] == spks[n]);
                BOOST_CHECK_EQUAL(IsSolvable(provider_inferred, spks_inferred[0]), !(flags & UNSOLVABLE));
                BOOST_CHECK(provider_inferred.origins == script_provider.origins);
            }

            // Test whether the observed key path is present in the 'paths' variable (which contains expected, unobserved paths),
            // and then remove it from that set.
            for (const auto& origin : script_provider.origins) {
                BOOST_CHECK_MESSAGE(paths.count(origin.second.second.path), "Unexpected key path: " + prv);
                left_paths.erase(origin.second.second.path);
            }
        }
    }

    // Verify no expected paths remain that were not observed.
    BOOST_CHECK_MESSAGE(left_paths.empty(), "Not all expected key paths found: " + prv);
}

void Check(const std::string& prv, const std::string& pub, int flags, const std::vector<std::vector<std::string>>& scripts, const std::set<std::vector<uint32_t>>& paths = ONLY_EMPTY)
{
    bool found_apostrophes_in_prv = false;
    bool found_apostrophes_in_pub = false;

    // Do not replace apostrophes with 'h' in prv and pub
    DoCheck(prv, pub, flags, scripts, paths);

    // Replace apostrophes with 'h' in prv but not in pub, if apostrophes are found in prv
    if (prv.find('\'') != std::string::npos) {
        found_apostrophes_in_prv = true;
        DoCheck(prv, pub, flags, scripts, paths, /* replace_apostrophe_with_h_in_prv = */true, /*replace_apostrophe_with_h_in_pub = */false);
    }

    // Replace apostrophes with 'h' in pub but not in prv, if apostrophes are found in pub
    if (pub.find('\'') != std::string::npos) {
        found_apostrophes_in_pub = true;
        DoCheck(prv, pub, flags, scripts, paths, /* replace_apostrophe_with_h_in_prv = */false, /*replace_apostrophe_with_h_in_pub = */true);
    }

    // Replace apostrophes with 'h' both in prv and in pub, if apostrophes are found in both
    if (found_apostrophes_in_prv && found_apostrophes_in_pub) {
        DoCheck(prv, pub, flags, scripts, paths, /* replace_apostrophe_with_h_in_prv = */true, /*replace_apostrophe_with_h_in_pub = */true);
    }
}

}

BOOST_FIXTURE_TEST_SUITE(descriptor_tests, BasicTestingSetup)

BOOST_AUTO_TEST_CASE(descriptor_test)
{
    // Basic single-key compressed
    Check("pk(XJvEUEcFWCHCyruc8ZX5exPZaGe4UR7gC5FHrhwPnQGDs1uWCsT2)", "pk(03a34b99f22c790c4e36b2b3c2c35a36db06226e41c692fc82b8b56ac1c540c5bd)", SIGNABLE, {{"2103a34b99f22c790c4e36b2b3c2c35a36db06226e41c692fc82b8b56ac1c540c5bdac"}});
    Check("pkh([deadbeef/1/2'/3/4']XJvEUEcFWCHCyruc8ZX5exPZaGe4UR7gC5FHrhwPnQGDs1uWCsT2)", "pkh([deadbeef/1/2'/3/4']03a34b99f22c790c4e36b2b3c2c35a36db06226e41c692fc82b8b56ac1c540c5bd)", SIGNABLE, {{"76a9149a1c78a507689f6f54b847ad1cef1e614ee23f1e88ac"}}, {{1, 0x80000002UL, 3, 0x80000004UL}});
    Check("combo(XJvEUEcFWCHCyruc8ZX5exPZaGe4UR7gC5FHrhwPnQGDs1uWCsT2)", "combo(03a34b99f22c790c4e36b2b3c2c35a36db06226e41c692fc82b8b56ac1c540c5bd)", SIGNABLE, {{"2103a34b99f22c790c4e36b2b3c2c35a36db06226e41c692fc82b8b56ac1c540c5bdac", "76a9149a1c78a507689f6f54b847ad1cef1e614ee23f1e88ac", "a9141a31ad23bf49c247dd531a623c2ef57da3c400c587"}});
    CheckUnparsable("pkh(deadbeef/1/2'/3/4']L4rK1yDtCWekvXuE6oXD9jCYfFNV2cWRpVuPLBcCU2z8TrisoyY1)", "pkh(deadbeef/1/2'/3/4']03a34b99f22c790c4e36b2b3c2c35a36db06226e41c692fc82b8b56ac1c540c5bd)", "Key origin start '[ character expected but not found, got 'd' instead"); // Missing start bracket in key origin
    CheckUnparsable("pkh([deadbeef]/1/2'/3/4']L4rK1yDtCWekvXuE6oXD9jCYfFNV2cWRpVuPLBcCU2z8TrisoyY1)", "pkh([deadbeef]/1/2'/3/4']03a34b99f22c790c4e36b2b3c2c35a36db06226e41c692fc82b8b56ac1c540c5bd)", "Multiple ']' characters found for a single pubkey"); // Multiple end brackets in key origin

    // Basic single-key uncompressed
    Check("pk(7sH936MDoVPFVk2VoaCM5yW8P3BfPyffnZECyaHrZwfLgWpS13e)", "pk(04a34b99f22c790c4e36b2b3c2c35a36db06226e41c692fc82b8b56ac1c540c5bd5b8dec5235a0fa8722476c7709c02559e3aa73aa03918ba2d492eea75abea235)", SIGNABLE, {{"4104a34b99f22c790c4e36b2b3c2c35a36db06226e41c692fc82b8b56ac1c540c5bd5b8dec5235a0fa8722476c7709c02559e3aa73aa03918ba2d492eea75abea235ac"}});
    Check("pkh(7sH936MDoVPFVk2VoaCM5yW8P3BfPyffnZECyaHrZwfLgWpS13e)", "pkh(04a34b99f22c790c4e36b2b3c2c35a36db06226e41c692fc82b8b56ac1c540c5bd5b8dec5235a0fa8722476c7709c02559e3aa73aa03918ba2d492eea75abea235)", SIGNABLE, {{"76a914b5bd079c4d57cc7fc28ecf8213a6b791625b818388ac"}});
    Check("combo(7sH936MDoVPFVk2VoaCM5yW8P3BfPyffnZECyaHrZwfLgWpS13e)", "combo(04a34b99f22c790c4e36b2b3c2c35a36db06226e41c692fc82b8b56ac1c540c5bd5b8dec5235a0fa8722476c7709c02559e3aa73aa03918ba2d492eea75abea235)", SIGNABLE, {{"4104a34b99f22c790c4e36b2b3c2c35a36db06226e41c692fc82b8b56ac1c540c5bd5b8dec5235a0fa8722476c7709c02559e3aa73aa03918ba2d492eea75abea235ac"}});

    // Some unconventional single-key constructions
    Check("sh(pk(XJvEUEcFWCHCyruc8ZX5exPZaGe4UR7gC5FHrhwPnQGDs1uWCsT2))", "sh(pk(03a34b99f22c790c4e36b2b3c2c35a36db06226e41c692fc82b8b56ac1c540c5bd))", SIGNABLE, {{"a9141857af51a5e516552b3086430fd8ce55f7c1a52487"}});
    Check("sh(pkh(XJvEUEcFWCHCyruc8ZX5exPZaGe4UR7gC5FHrhwPnQGDs1uWCsT2))", "sh(pkh(03a34b99f22c790c4e36b2b3c2c35a36db06226e41c692fc82b8b56ac1c540c5bd))", SIGNABLE, {{"a9141a31ad23bf49c247dd531a623c2ef57da3c400c587"}});

    // Versions with BIP32 derivations
    Check("pk(xprv9uPDJpEQgRQfDcW7BkF7eTya6RPxXeJCqCJGHuCJ4GiRVLzkTXBAJMu2qaMWPrS7AANYqdq6vcBcBUdJCVVFceUvJFjaPdGZ2y9WACViL4L/0)", "pk(xpub68NZiKmJWnxxS6aaHmn81bvJeTESw724CRDs6HbuccFQN9Ku14VQrADWgqbhhTHBaohPX4CjNLf9fq9MYo6oDaPPLPxSb7gwQN3ih19Zm4Y/0)", DEFAULT, {{"210379e45b3cf75f9c5f9befd8e9506fb962f6a9d185ac87001ec44a8d3df8d4a9e3ac"}}, {{0}});
    Check("pkh(xprv9s21ZrQH143K31xYSDQpPDxsXRTUcvj2iNHm5NUtrGiGG5e2DtALGdso3pGz6ssrdK4PFmM8NSpSBHNqPqm55Qn3LqFtT2emdEXVYsCzC2U/2147483647'/0)", "pkh(xpub661MyMwAqRbcFW31YEwpkMuc5THy2PSt5bDMsktWQcFF8syAmRUapSCGu8ED9W6oDMSgv6Zz8idoc4a6mr8BDzTJY47LJhkJ8UB7WEGuduB/2147483647'/0)", HARDENED, {{"76a914ebdc90806a9c4356c1c88e42216611e1cb4c1c1788ac"}}, {{0xFFFFFFFFUL,0}});
    Check("combo([01234567]xprvA1RpRA33e1JQ7ifknakTFpgNXPmW2YvmhqLQYMmrj4xJXXWYpDPS3xz7iAxn8L39njGVyuoseXzU6rcxFLJ8HFsTjSyQbLYnMpCqE2VbFWc)", "combo([01234567]xpub6ERApfZwUNrhLCkDtcHTcxd75RbzS1ed54G1LkBUHQVHQKqhMkhgbmJbZRkrgZw4koxb5JaHWkY4ALHY2grBGRjaDMzQLcgJvLJuZZvRcEL)", SIGNABLE, {{"2102d2b36900396c9282fa14628566582f206a5dd0bcc8d5e892611806cafb0301f0ac", "76a91431a507b815593dfc51ffc7245ae7e5aee304246e88ac", "a914330e2d4d29686cf671043c5157a42b9532ac168587"}});
    Check("combo(xprvA2JDeKCSNNZky6uBCviVfJSKyQ1mDYahRjijr5idH2WwLsEd4Hsb2Tyh8RfQMuPh7f7RtyzTtdrbdqqsunu5Mm3wDvUAKRHSC34sJ7in334/*)", "combo(xpub6FHa3pjLCk84BayeJxFW2SP4XRrFd1JYnxeLeU8EqN3vDfZmbqBqaGJAyiLjTAwm6ZLRQUMv1ZACTj37sR62cfN7fe5JnJ7dh8zL4fiyLHV/*)", RANGE, {{"2102df12b7035bdac8e3bab862a3a83d06ea6b17b6753d52edecba9be46f5d09e076ac", "76a914f90e3178ca25f2c808dc76624032d352fdbdfaf288ac", "a914ebb09774a2d3ebe7cbad02bcec49e3971b75b51787"}, {"21032869a233c9adff9a994e4966e5b821fd5bac066da6c3112488dc52383b4a98ecac", "76a914a8409d1b6dfb1ed2a3e8aa5e0ef2ff26b15b75b788ac", "a91441b8fc4592be2987caa8706d0567cccd18431c1387"}}, {{0}, {1}});
    CheckUnparsable("combo([012345678]xprvA1RpRA33e1JQ7ifknakTFpgNXPmW2YvmhqLQYMmrj4xJXXWYpDPS3xz7iAxn8L39njGVyuoseXzU6rcxFLJ8HFsTjSyQbLYnMpCqE2VbFWc)", "combo([012345678]xpub6ERApfZwUNrhLCkDtcHTcxd75RbzS1ed54G1LkBUHQVHQKqhMkhgbmJbZRkrgZw4koxb5JaHWkY4ALHY2grBGRjaDMzQLcgJvLJuZZvRcEL)", "Fingerprint is not 4 bytes (9 characters instead of 8 characters)"); // Too long key fingerprint
    CheckUnparsable("pkh(xprv9s21ZrQH143K31xYSDQpPDxsXRTUcvj2iNHm5NUtrGiGG5e2DtALGdso3pGz6ssrdK4PFmM8NSpSBHNqPqm55Qn3LqFtT2emdEXVYsCzC2U/2147483648)", "pkh(xpub661MyMwAqRbcFW31YEwpkMuc5THy2PSt5bDMsktWQcFF8syAmRUapSCGu8ED9W6oDMSgv6Zz8idoc4a6mr8BDzTJY47LJhkJ8UB7WEGuduB/2147483648)", "Key path value 2147483648 is out of range"); // BIP 32 path element overflow
    CheckUnparsable("pkh(xprv9s21ZrQH143K31xYSDQpPDxsXRTUcvj2iNHm5NUtrGiGG5e2DtALGdso3pGz6ssrdK4PFmM8NSpSBHNqPqm55Qn3LqFtT2emdEXVYsCzC2U/1aa)", "pkh(xpub661MyMwAqRbcFW31YEwpkMuc5THy2PSt5bDMsktWQcFF8syAmRUapSCGu8ED9W6oDMSgv6Zz8idoc4a6mr8BDzTJY47LJhkJ8UB7WEGuduB/1aa)", "Key path value '1aa' is not a valid uint32"); // Path is not valid uint

    // Multisig constructions
    Check("multi(1,XJvEUEcFWCHCyruc8ZX5exPZaGe4UR7gC5FHrhwPnQGDs1uWCsT2,7sH936MDoVPFVk2VoaCM5yW8P3BfPyffnZECyaHrZwfLgWpS13e)", "multi(1,03a34b99f22c790c4e36b2b3c2c35a36db06226e41c692fc82b8b56ac1c540c5bd,04a34b99f22c790c4e36b2b3c2c35a36db06226e41c692fc82b8b56ac1c540c5bd5b8dec5235a0fa8722476c7709c02559e3aa73aa03918ba2d492eea75abea235)", SIGNABLE, {{"512103a34b99f22c790c4e36b2b3c2c35a36db06226e41c692fc82b8b56ac1c540c5bd4104a34b99f22c790c4e36b2b3c2c35a36db06226e41c692fc82b8b56ac1c540c5bd5b8dec5235a0fa8722476c7709c02559e3aa73aa03918ba2d492eea75abea23552ae"}});
    Check("sh(multi(2,[00000000/111'/222]xprvA1RpRA33e1JQ7ifknakTFpgNXPmW2YvmhqLQYMmrj4xJXXWYpDPS3xz7iAxn8L39njGVyuoseXzU6rcxFLJ8HFsTjSyQbLYnMpCqE2VbFWc,xprv9uPDJpEQgRQfDcW7BkF7eTya6RPxXeJCqCJGHuCJ4GiRVLzkTXBAJMu2qaMWPrS7AANYqdq6vcBcBUdJCVVFceUvJFjaPdGZ2y9WACViL4L/0))", "sh(multi(2,[00000000/111'/222]xpub6ERApfZwUNrhLCkDtcHTcxd75RbzS1ed54G1LkBUHQVHQKqhMkhgbmJbZRkrgZw4koxb5JaHWkY4ALHY2grBGRjaDMzQLcgJvLJuZZvRcEL,xpub68NZiKmJWnxxS6aaHmn81bvJeTESw724CRDs6HbuccFQN9Ku14VQrADWgqbhhTHBaohPX4CjNLf9fq9MYo6oDaPPLPxSb7gwQN3ih19Zm4Y/0))", DEFAULT, {{"a91445a9a622a8b0a1269944be477640eedc447bbd8487"}}, {{0x8000006FUL,222},{0}});
    CheckUnparsable("sh(multi(16,KzoAz5CanayRKex3fSLQ2BwJpN7U52gZvxMyk78nDMHuqrUxuSJy,KwGNz6YCCQtYvFzMtrC6D3tKTKdBBboMrLTsjr2NYVBwapCkn7Mr,KxogYhiNfwxuswvXV66eFyKcCpm7dZ7TqHVqujHAVUjJxyivxQ9X,L2BUNduTSyZwZjwNHynQTF14mv2uz2NRq5n5sYWTb4FkkmqgEE9f,L1okJGHGn1kFjdXHKxXjwVVtmCMR2JA5QsbKCSpSb7ReQjezKeoD,KxDCNSST75HFPaW5QKpzHtAyaCQC7p9Vo3FYfi2u4dXD1vgMiboK,L5edQjFtnkcf5UWURn6UuuoFrabgDQUHdheKCziwN42aLwS3KizU,KzF8UWFcEC7BYTq8Go1xVimMkDmyNYVmXV5PV7RuDicvAocoPB8i,L3nHUboKG2w4VSJ5jYZ5CBM97oeK6YuKvfZxrefdShECcjEYKMWZ,KyjHo36dWkYhimKmVVmQTq3gERv3pnqA4xFCpvUgbGDJad7eS8WE,KwsfyHKRUTZPQtysN7M3tZ4GXTnuov5XRgjdF2XCG8faAPmFruRF,KzCUbGhN9LJhdeFfL9zQgTJMjqxdBKEekRGZX24hXdgCNCijkkap,KzgpMBwwsDLwkaC5UrmBgCYaBD2WgZ7PBoGYXR8KT7gCA9UTN5a3,KyBXTPy4T7YG4q9tcAM3LkvfRpD1ybHMvcJ2ehaWXaSqeGUxEdkP,KzJDe9iwJRPtKP2F2AoN6zBgzS7uiuAwhWCfGdNeYJ3PC1HNJ8M8,L1xbHrxynrqLKkoYc4qtoQPx6uy5qYXR5ZDYVYBSRmCV5piU3JG9))","sh(multi(16,03669b8afcec803a0d323e9a17f3ea8e68e8abe5a278020a929adbec52421adbd0,0260b2003c386519fc9eadf2b5cf124dd8eea4c4e68d5e154050a9346ea98ce600,0362a74e399c39ed5593852a30147f2959b56bb827dfa3e60e464b02ccf87dc5e8,0261345b53de74a4d721ef877c255429961b7e43714171ac06168d7e08c542a8b8,02da72e8b46901a65d4374fe6315538d8f368557dda3a1dcf9ea903f3afe7314c8,0318c82dd0b53fd3a932d16e0ba9e278fcc937c582d5781be626ff16e201f72286,0297ccef1ef99f9d73dec9ad37476ddb232f1238aff877af19e72ba04493361009,02e502cfd5c3f972fe9a3e2a18827820638f96b6f347e54d63deb839011fd5765d,03e687710f0e3ebe81c1037074da939d409c0025f17eb86adb9427d28f0f7ae0e9,02c04d3a5274952acdbc76987f3184b346a483d43be40874624b29e3692c1df5af,02ed06e0f418b5b43a7ec01d1d7d27290fa15f75771cb69b642a51471c29c84acd,036d46073cbb9ffee90473f3da429abc8de7f8751199da44485682a989a4bebb24,02f5d1ff7c9029a80a4e36b9a5497027ef7f3e73384a4a94fbfe7c4e9164eec8bc,02e41deffd1b7cce11cde209a781adcffdabd1b91c0ba0375857a2bfd9302419f3,02d76625f7956a7fc505ab02556c23ee72d832f1bac391bcd2d3abce5710a13d06,0399eb0a5487515802dc14544cf10b3666623762fbed2ec38a3975716e2c29c232))", "P2SH script is too large, 547 bytes is larger than 520 bytes"); // P2SH does not fit 16 compressed pubkeys in a redeemscript
    CheckUnparsable("multi(a,L4rK1yDtCWekvXuE6oXD9jCYfFNV2cWRpVuPLBcCU2z8TrisoyY1,5KYZdUEo39z3FPrtuX2QbbwGnNP5zTd7yyr2SC1j299sBCnWjss)", "multi(a,03a34b99f22c790c4e36b2b3c2c35a36db06226e41c692fc82b8b56ac1c540c5bd,04a34b99f22c790c4e36b2b3c2c35a36db06226e41c692fc82b8b56ac1c540c5bd5b8dec5235a0fa8722476c7709c02559e3aa73aa03918ba2d492eea75abea235)", "Multi threshold 'a' is not valid"); // Invalid threshold
    CheckUnparsable("multi(0,L4rK1yDtCWekvXuE6oXD9jCYfFNV2cWRpVuPLBcCU2z8TrisoyY1,5KYZdUEo39z3FPrtuX2QbbwGnNP5zTd7yyr2SC1j299sBCnWjss)", "multi(0,03a34b99f22c790c4e36b2b3c2c35a36db06226e41c692fc82b8b56ac1c540c5bd,04a34b99f22c790c4e36b2b3c2c35a36db06226e41c692fc82b8b56ac1c540c5bd5b8dec5235a0fa8722476c7709c02559e3aa73aa03918ba2d492eea75abea235)", "Multisig threshold cannot be 0, must be at least 1"); // Threshold of 0
    CheckUnparsable("multi(3,L4rK1yDtCWekvXuE6oXD9jCYfFNV2cWRpVuPLBcCU2z8TrisoyY1,5KYZdUEo39z3FPrtuX2QbbwGnNP5zTd7yyr2SC1j299sBCnWjss)", "multi(3,03a34b99f22c790c4e36b2b3c2c35a36db06226e41c692fc82b8b56ac1c540c5bd,04a34b99f22c790c4e36b2b3c2c35a36db06226e41c692fc82b8b56ac1c540c5bd5b8dec5235a0fa8722476c7709c02559e3aa73aa03918ba2d492eea75abea235)", "Multisig threshold cannot be larger than the number of keys; threshold is 3 but only 2 keys specified"); // Threshold larger than number of keys
    CheckUnparsable("multi(3,KzoAz5CanayRKex3fSLQ2BwJpN7U52gZvxMyk78nDMHuqrUxuSJy,KwGNz6YCCQtYvFzMtrC6D3tKTKdBBboMrLTsjr2NYVBwapCkn7Mr,KxogYhiNfwxuswvXV66eFyKcCpm7dZ7TqHVqujHAVUjJxyivxQ9X,L2BUNduTSyZwZjwNHynQTF14mv2uz2NRq5n5sYWTb4FkkmqgEE9f)", "multi(3,03669b8afcec803a0d323e9a17f3ea8e68e8abe5a278020a929adbec52421adbd0,0260b2003c386519fc9eadf2b5cf124dd8eea4c4e68d5e154050a9346ea98ce600,0362a74e399c39ed5593852a30147f2959b56bb827dfa3e60e464b02ccf87dc5e8,0261345b53de74a4d721ef877c255429961b7e43714171ac06168d7e08c542a8b8)", "Cannot have 4 pubkeys in bare multisig; only at most 3 pubkeys"); // Threshold larger than number of keys
    CheckUnparsable("sh(multi(16,KzoAz5CanayRKex3fSLQ2BwJpN7U52gZvxMyk78nDMHuqrUxuSJy,KwGNz6YCCQtYvFzMtrC6D3tKTKdBBboMrLTsjr2NYVBwapCkn7Mr,KxogYhiNfwxuswvXV66eFyKcCpm7dZ7TqHVqujHAVUjJxyivxQ9X,L2BUNduTSyZwZjwNHynQTF14mv2uz2NRq5n5sYWTb4FkkmqgEE9f,L1okJGHGn1kFjdXHKxXjwVVtmCMR2JA5QsbKCSpSb7ReQjezKeoD,KxDCNSST75HFPaW5QKpzHtAyaCQC7p9Vo3FYfi2u4dXD1vgMiboK,L5edQjFtnkcf5UWURn6UuuoFrabgDQUHdheKCziwN42aLwS3KizU,KzF8UWFcEC7BYTq8Go1xVimMkDmyNYVmXV5PV7RuDicvAocoPB8i,L3nHUboKG2w4VSJ5jYZ5CBM97oeK6YuKvfZxrefdShECcjEYKMWZ,KyjHo36dWkYhimKmVVmQTq3gERv3pnqA4xFCpvUgbGDJad7eS8WE,KwsfyHKRUTZPQtysN7M3tZ4GXTnuov5XRgjdF2XCG8faAPmFruRF,KzCUbGhN9LJhdeFfL9zQgTJMjqxdBKEekRGZX24hXdgCNCijkkap,KzgpMBwwsDLwkaC5UrmBgCYaBD2WgZ7PBoGYXR8KT7gCA9UTN5a3,KyBXTPy4T7YG4q9tcAM3LkvfRpD1ybHMvcJ2ehaWXaSqeGUxEdkP,KzJDe9iwJRPtKP2F2AoN6zBgzS7uiuAwhWCfGdNeYJ3PC1HNJ8M8,L1xbHrxynrqLKkoYc4qtoQPx6uy5qYXR5ZDYVYBSRmCV5piU3JG9,L4rK1yDtCWekvXuE6oXD9jCYfFNV2cWRpVuPLBcCU2z8TrisoyY1))","sh(multi(16,03669b8afcec803a0d323e9a17f3ea8e68e8abe5a278020a929adbec52421adbd0,0260b2003c386519fc9eadf2b5cf124dd8eea4c4e68d5e154050a9346ea98ce600,0362a74e399c39ed5593852a30147f2959b56bb827dfa3e60e464b02ccf87dc5e8,0261345b53de74a4d721ef877c255429961b7e43714171ac06168d7e08c542a8b8,02da72e8b46901a65d4374fe6315538d8f368557dda3a1dcf9ea903f3afe7314c8,0318c82dd0b53fd3a932d16e0ba9e278fcc937c582d5781be626ff16e201f72286,0297ccef1ef99f9d73dec9ad37476ddb232f1238aff877af19e72ba04493361009,02e502cfd5c3f972fe9a3e2a18827820638f96b6f347e54d63deb839011fd5765d,03e687710f0e3ebe81c1037074da939d409c0025f17eb86adb9427d28f0f7ae0e9,02c04d3a5274952acdbc76987f3184b346a483d43be40874624b29e3692c1df5af,02ed06e0f418b5b43a7ec01d1d7d27290fa15f75771cb69b642a51471c29c84acd,036d46073cbb9ffee90473f3da429abc8de7f8751199da44485682a989a4bebb24,02f5d1ff7c9029a80a4e36b9a5497027ef7f3e73384a4a94fbfe7c4e9164eec8bc,02e41deffd1b7cce11cde209a781adcffdabd1b91c0ba0375857a2bfd9302419f3,02d76625f7956a7fc505ab02556c23ee72d832f1bac391bcd2d3abce5710a13d06,0399eb0a5487515802dc14544cf10b3666623762fbed2ec38a3975716e2c29c232,03a34b99f22c790c4e36b2b3c2c35a36db06226e41c692fc82b8b56ac1c540c5bd))", "Cannot have 17 keys in multisig; must have between 1 and 16 keys, inclusive"); // Cannot have more than 16 keys in a multisig

    // Check for invalid nesting of structures
    CheckUnparsable("sh(XJvEUEcFWCHCyruc8ZX5exPZaGe4UR7gC5FHrhwPnQGDs1uWCsT2)", "sh(03a34b99f22c790c4e36b2b3c2c35a36db06226e41c692fc82b8b56ac1c540c5bd)", "A function is needed within P2SH"); // P2SH needs a script, not a key
    CheckUnparsable("sh(sh(pk(XJvEUEcFWCHCyruc8ZX5exPZaGe4UR7gC5FHrhwPnQGDs1uWCsT2)))", "sh(sh(pk(03a34b99f22c790c4e36b2b3c2c35a36db06226e41c692fc82b8b56ac1c540c5bd)))", "Cannot have sh in non-top level"); // Cannot embed P2SH inside P2SH
    CheckUnparsable("sh(combo(XJvEUEcFWCHCyruc8ZX5exPZaGe4UR7gC5FHrhwPnQGDs1uWCsT2))", "sh(combo(03a34b99f22c790c4e36b2b3c2c35a36db06226e41c692fc82b8b56ac1c540c5bd))", "Cannot have combo in non-top level"); // Old must be top level

    // Checksums
    Check("sh(multi(2,[00000000/111'/222]xprvA1RpRA33e1JQ7ifknakTFpgNXPmW2YvmhqLQYMmrj4xJXXWYpDPS3xz7iAxn8L39njGVyuoseXzU6rcxFLJ8HFsTjSyQbLYnMpCqE2VbFWc,xprv9uPDJpEQgRQfDcW7BkF7eTya6RPxXeJCqCJGHuCJ4GiRVLzkTXBAJMu2qaMWPrS7AANYqdq6vcBcBUdJCVVFceUvJFjaPdGZ2y9WACViL4L/0))#ggrsrxfy", "sh(multi(2,[00000000/111'/222]xpub6ERApfZwUNrhLCkDtcHTcxd75RbzS1ed54G1LkBUHQVHQKqhMkhgbmJbZRkrgZw4koxb5JaHWkY4ALHY2grBGRjaDMzQLcgJvLJuZZvRcEL,xpub68NZiKmJWnxxS6aaHmn81bvJeTESw724CRDs6HbuccFQN9Ku14VQrADWgqbhhTHBaohPX4CjNLf9fq9MYo6oDaPPLPxSb7gwQN3ih19Zm4Y/0))#tjg09x5t", DEFAULT, {{"a91445a9a622a8b0a1269944be477640eedc447bbd8487"}}, {{0x8000006FUL,222},{0}});
    Check("sh(multi(2,[00000000/111'/222]xprvA1RpRA33e1JQ7ifknakTFpgNXPmW2YvmhqLQYMmrj4xJXXWYpDPS3xz7iAxn8L39njGVyuoseXzU6rcxFLJ8HFsTjSyQbLYnMpCqE2VbFWc,xprv9uPDJpEQgRQfDcW7BkF7eTya6RPxXeJCqCJGHuCJ4GiRVLzkTXBAJMu2qaMWPrS7AANYqdq6vcBcBUdJCVVFceUvJFjaPdGZ2y9WACViL4L/0))", "sh(multi(2,[00000000/111'/222]xpub6ERApfZwUNrhLCkDtcHTcxd75RbzS1ed54G1LkBUHQVHQKqhMkhgbmJbZRkrgZw4koxb5JaHWkY4ALHY2grBGRjaDMzQLcgJvLJuZZvRcEL,xpub68NZiKmJWnxxS6aaHmn81bvJeTESw724CRDs6HbuccFQN9Ku14VQrADWgqbhhTHBaohPX4CjNLf9fq9MYo6oDaPPLPxSb7gwQN3ih19Zm4Y/0))", DEFAULT, {{"a91445a9a622a8b0a1269944be477640eedc447bbd8487"}}, {{0x8000006FUL,222},{0}});
    CheckUnparsable("sh(multi(2,[00000000/111'/222]xprvA1RpRA33e1JQ7ifknakTFpgNXPmW2YvmhqLQYMmrj4xJXXWYpDPS3xz7iAxn8L39njGVyuoseXzU6rcxFLJ8HFsTjSyQbLYnMpCqE2VbFWc,xprv9uPDJpEQgRQfDcW7BkF7eTya6RPxXeJCqCJGHuCJ4GiRVLzkTXBAJMu2qaMWPrS7AANYqdq6vcBcBUdJCVVFceUvJFjaPdGZ2y9WACViL4L/0))#", "sh(multi(2,[00000000/111'/222]xpub6ERApfZwUNrhLCkDtcHTcxd75RbzS1ed54G1LkBUHQVHQKqhMkhgbmJbZRkrgZw4koxb5JaHWkY4ALHY2grBGRjaDMzQLcgJvLJuZZvRcEL,xpub68NZiKmJWnxxS6aaHmn81bvJeTESw724CRDs6HbuccFQN9Ku14VQrADWgqbhhTHBaohPX4CjNLf9fq9MYo6oDaPPLPxSb7gwQN3ih19Zm4Y/0))#", "Expected 8 character checksum, not 0 characters"); // Empty checksum
    CheckUnparsable("sh(multi(2,[00000000/111'/222]xprvA1RpRA33e1JQ7ifknakTFpgNXPmW2YvmhqLQYMmrj4xJXXWYpDPS3xz7iAxn8L39njGVyuoseXzU6rcxFLJ8HFsTjSyQbLYnMpCqE2VbFWc,xprv9uPDJpEQgRQfDcW7BkF7eTya6RPxXeJCqCJGHuCJ4GiRVLzkTXBAJMu2qaMWPrS7AANYqdq6vcBcBUdJCVVFceUvJFjaPdGZ2y9WACViL4L/0))#ggrsrxfyq", "sh(multi(2,[00000000/111'/222]xpub6ERApfZwUNrhLCkDtcHTcxd75RbzS1ed54G1LkBUHQVHQKqhMkhgbmJbZRkrgZw4koxb5JaHWkY4ALHY2grBGRjaDMzQLcgJvLJuZZvRcEL,xpub68NZiKmJWnxxS6aaHmn81bvJeTESw724CRDs6HbuccFQN9Ku14VQrADWgqbhhTHBaohPX4CjNLf9fq9MYo6oDaPPLPxSb7gwQN3ih19Zm4Y/0))#tjg09x5tq", "Expected 8 character checksum, not 9 characters"); // Too long checksum
    CheckUnparsable("sh(multi(2,[00000000/111'/222]xprvA1RpRA33e1JQ7ifknakTFpgNXPmW2YvmhqLQYMmrj4xJXXWYpDPS3xz7iAxn8L39njGVyuoseXzU6rcxFLJ8HFsTjSyQbLYnMpCqE2VbFWc,xprv9uPDJpEQgRQfDcW7BkF7eTya6RPxXeJCqCJGHuCJ4GiRVLzkTXBAJMu2qaMWPrS7AANYqdq6vcBcBUdJCVVFceUvJFjaPdGZ2y9WACViL4L/0))#ggrsrxf", "sh(multi(2,[00000000/111'/222]xpub6ERApfZwUNrhLCkDtcHTcxd75RbzS1ed54G1LkBUHQVHQKqhMkhgbmJbZRkrgZw4koxb5JaHWkY4ALHY2grBGRjaDMzQLcgJvLJuZZvRcEL,xpub68NZiKmJWnxxS6aaHmn81bvJeTESw724CRDs6HbuccFQN9Ku14VQrADWgqbhhTHBaohPX4CjNLf9fq9MYo6oDaPPLPxSb7gwQN3ih19Zm4Y/0))#tjg09x5", "Expected 8 character checksum, not 7 characters"); // Too short checksum
    CheckUnparsable("sh(multi(3,[00000000/111'/222]xprvA1RpRA33e1JQ7ifknakTFpgNXPmW2YvmhqLQYMmrj4xJXXWYpDPS3xz7iAxn8L39njGVyuoseXzU6rcxFLJ8HFsTjSyQbLYnMpCqE2VbFWc,xprv9uPDJpEQgRQfDcW7BkF7eTya6RPxXeJCqCJGHuCJ4GiRVLzkTXBAJMu2qaMWPrS7AANYqdq6vcBcBUdJCVVFceUvJFjaPdGZ2y9WACViL4L/0))#ggrsrxfy", "sh(multi(3,[00000000/111'/222]xpub6ERApfZwUNrhLCkDtcHTcxd75RbzS1ed54G1LkBUHQVHQKqhMkhgbmJbZRkrgZw4koxb5JaHWkY4ALHY2grBGRjaDMzQLcgJvLJuZZvRcEL,xpub68NZiKmJWnxxS6aaHmn81bvJeTESw724CRDs6HbuccFQN9Ku14VQrADWgqbhhTHBaohPX4CjNLf9fq9MYo6oDaPPLPxSb7gwQN3ih19Zm4Y/0))#tjg09x5t", "Provided checksum 'tjg09x5t' does not match computed checksum 'd4x0uxyv'"); // Error in payload
    CheckUnparsable("sh(multi(2,[00000000/111'/222]xprvA1RpRA33e1JQ7ifknakTFpgNXPmW2YvmhqLQYMmrj4xJXXWYpDPS3xz7iAxn8L39njGVyuoseXzU6rcxFLJ8HFsTjSyQbLYnMpCqE2VbFWc,xprv9uPDJpEQgRQfDcW7BkF7eTya6RPxXeJCqCJGHuCJ4GiRVLzkTXBAJMu2qaMWPrS7AANYqdq6vcBcBUdJCVVFceUvJFjaPdGZ2y9WACViL4L/0))#ggssrxfy", "sh(multi(2,[00000000/111'/222]xpub6ERApfZwUNrhLCkDtcHTcxd75RbzS1ed54G1LkBUHQVHQKqhMkhgbmJbZRkrgZw4koxb5JaHWkY4ALHY2grBGRjaDMzQLcgJvLJuZZvRcEL,xpub68NZiKmJWnxxS6aaHmn81bvJeTESw724CRDs6HbuccFQN9Ku14VQrADWgqbhhTHBaohPX4CjNLf9fq9MYo6oDaPPLPxSb7gwQN3ih19Zm4Y/0))#tjq09x4t", "Provided checksum 'tjq09x4t' does not match computed checksum 'tjg09x5t'"); // Error in checksum
    CheckUnparsable("sh(multi(2,[00000000/111'/222]xprvA1RpRA33e1JQ7ifknakTFpgNXPmW2YvmhqLQYMmrj4xJXXWYpDPS3xz7iAxn8L39njGVyuoseXzU6rcxFLJ8HFsTjSyQbLYnMpCqE2VbFWc,xprv9uPDJpEQgRQfDcW7BkF7eTya6RPxXeJCqCJGHuCJ4GiRVLzkTXBAJMu2qaMWPrS7AANYqdq6vcBcBUdJCVVFceUvJFjaPdGZ2y9WACViL4L/0))##ggssrxfy", "sh(multi(2,[00000000/111'/222]xpub6ERApfZwUNrhLCkDtcHTcxd75RbzS1ed54G1LkBUHQVHQKqhMkhgbmJbZRkrgZw4koxb5JaHWkY4ALHY2grBGRjaDMzQLcgJvLJuZZvRcEL,xpub68NZiKmJWnxxS6aaHmn81bvJeTESw724CRDs6HbuccFQN9Ku14VQrADWgqbhhTHBaohPX4CjNLf9fq9MYo6oDaPPLPxSb7gwQN3ih19Zm4Y/0))##tjq09x4t", "Multiple '#' symbols"); // Error in checksum

    // Addr and raw tests
    CheckUnparsable("", "addr(asdf)", "Address is not valid"); // Invalid address
    CheckUnparsable("", "raw(asdf)", "Raw script is not hex"); // Invalid script
    CheckUnparsable("", "raw(Ü)#00000000", "Invalid characters in payload"); // Invalid chars
}

BOOST_AUTO_TEST_SUITE_END()