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multisig: add post-kex verification round to check that all participants have completed the multisig address
This commit is contained in:
koe
parent
d562deaaa9
commit
0d6ecb1136
9 changed files with 336 additions and 194 deletions
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@ -73,7 +73,7 @@ namespace multisig
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const crypto::public_key &multisig_pubkey,
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const crypto::public_key &common_pubkey,
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const std::uint32_t kex_rounds_complete,
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kex_origins_map_t kex_origins_map,
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multisig_keyset_map_memsafe_t kex_origins_map,
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std::string next_round_kex_message) :
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m_base_privkey{base_privkey},
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m_base_common_privkey{base_common_privkey},
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@ -89,6 +89,20 @@ namespace multisig
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CHECK_AND_ASSERT_THROW_MES(crypto::secret_key_to_public_key(m_base_privkey, m_base_pubkey),
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"Failed to derive public key");
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set_multisig_config(threshold, std::move(signers));
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// kex rounds should not exceed post-kex verification round
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const std::uint32_t kex_rounds_required{multisig_kex_rounds_required(m_signers.size(), m_threshold)};
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CHECK_AND_ASSERT_THROW_MES(m_kex_rounds_complete <= kex_rounds_required + 1,
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"multisig account: tried to reconstruct account, but kex rounds complete counter is invalid.");
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// once an account is done with kex, the 'next kex msg' is always the post-kex verification message
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// i.e. the multisig account pubkey signed by the signer's privkey AND the common pubkey
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if (main_kex_rounds_done())
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{
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m_next_round_kex_message = multisig_kex_msg{kex_rounds_required + 1,
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m_base_privkey,
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std::vector<crypto::public_key>{m_multisig_pubkey, m_common_pubkey}}.get_msg();
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}
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}
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//----------------------------------------------------------------------------------------------------------------------
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// multisig_account: EXTERNAL
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@ -100,10 +114,20 @@ namespace multisig
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//----------------------------------------------------------------------------------------------------------------------
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// multisig_account: EXTERNAL
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//----------------------------------------------------------------------------------------------------------------------
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bool multisig_account::multisig_is_ready() const
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bool multisig_account::main_kex_rounds_done() const
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{
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if (account_is_active())
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return multisig_kex_rounds_required(m_signers.size(), m_threshold) == m_kex_rounds_complete;
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return m_kex_rounds_complete >= multisig_kex_rounds_required(m_signers.size(), m_threshold);
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else
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return false;
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}
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//----------------------------------------------------------------------------------------------------------------------
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// multisig_account: EXTERNAL
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//----------------------------------------------------------------------------------------------------------------------
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bool multisig_account::multisig_is_ready() const
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{
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if (main_kex_rounds_done())
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return m_kex_rounds_complete >= multisig_kex_rounds_required(m_signers.size(), m_threshold) + 1;
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else
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return false;
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}
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@ -119,10 +143,6 @@ namespace multisig
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for (auto signer_it = signers.begin(); signer_it != signers.end(); ++signer_it)
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{
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// signers should all be unique
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CHECK_AND_ASSERT_THROW_MES(std::find(signers.begin(), signer_it, *signer_it) == signer_it,
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"multisig account: tried to set signers, but found a duplicate signer unexpectedly.");
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// signer pubkeys must be in main subgroup, and not identity
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CHECK_AND_ASSERT_THROW_MES(rct::isInMainSubgroup(rct::pk2rct(*signer_it)) && !(*signer_it == rct::rct2pk(rct::identity())),
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"multisig account: tried to set signers, but a signer pubkey is invalid.");
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@ -133,12 +153,11 @@ namespace multisig
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"multisig account: tried to set signers, but did not find the account's base pubkey in signer list.");
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// sort signers
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std::sort(signers.begin(), signers.end(),
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[](const crypto::public_key &key1, const crypto::public_key &key2) -> bool
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{
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return memcmp(&key1, &key2, sizeof(crypto::public_key)) < 0;
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}
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);
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std::sort(signers.begin(), signers.end());
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// signers should all be unique
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CHECK_AND_ASSERT_THROW_MES(std::adjacent_find(signers.begin(), signers.end()) == signers.end(),
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"multisig account: tried to set signers, but there are duplicate signers unexpectedly.");
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// set
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m_threshold = threshold;
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@ -75,12 +75,12 @@ namespace multisig
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* - ZtM2: https://web.getmonero.org/library/Zero-to-Monero-2-0-0.pdf Ch. 9, especially Section 9.6.3
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* - FROST: https://eprint.iacr.org/2018/417
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*/
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using multisig_keyset_map_memsafe_t =
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std::unordered_map<crypto::public_key_memsafe, std::unordered_set<crypto::public_key>>;
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class multisig_account final
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{
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public:
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//member types
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using kex_origins_map_t = std::unordered_map<crypto::public_key_memsafe, std::unordered_set<crypto::public_key>>;
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//constructors
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// default constructor
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multisig_account() = default;
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@ -105,7 +105,7 @@ namespace multisig
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const crypto::public_key &multisig_pubkey,
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const crypto::public_key &common_pubkey,
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const std::uint32_t kex_rounds_complete,
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kex_origins_map_t kex_origins_map,
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multisig_keyset_map_memsafe_t kex_origins_map,
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std::string next_round_kex_message);
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// copy constructor: default
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@ -137,13 +137,15 @@ namespace multisig
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// get kex rounds complete
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std::uint32_t get_kex_rounds_complete() const { return m_kex_rounds_complete; }
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// get kex keys to origins map
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const kex_origins_map_t& get_kex_keys_to_origins_map() const { return m_kex_keys_to_origins_map; }
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const multisig_keyset_map_memsafe_t& get_kex_keys_to_origins_map() const { return m_kex_keys_to_origins_map; }
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// get the kex msg for the next round
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const std::string& get_next_kex_round_msg() const { return m_next_round_kex_message; }
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//account status functions
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// account has been intialized, and the account holder can use the 'common' key
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bool account_is_active() const;
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// account has gone through main kex rounds, only remaining step is to verify all other participants are ready
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bool main_kex_rounds_done() const;
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// account is ready to make multisig signatures
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bool multisig_is_ready() const;
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@ -178,21 +180,21 @@ namespace multisig
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* - Collect the local signer's shared keys to ignore in incoming messages, build the aggregate ancillary key
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* if appropriate.
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* param: expanded_msgs - set of multisig kex messages to process
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* param: rounds_required - number of rounds required for kex
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* param: kex_rounds_required - number of rounds required for kex (not including post-kex verification round)
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* outparam: exclude_pubkeys_out - keys held by the local account corresponding to round 'current_round'
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* - If 'current_round' is the final round, these are the local account's shares of the final aggregate key.
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*/
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void initialize_kex_update(const std::vector<multisig_kex_msg> &expanded_msgs,
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const std::uint32_t rounds_required,
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const std::uint32_t kex_rounds_required,
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std::vector<crypto::public_key> &exclude_pubkeys_out);
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/**
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* brief: finalize_kex_update - Helper for kex_update_impl()
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* param: rounds_required - number of rounds required for kex
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* param: kex_rounds_required - number of rounds required for kex (not including post-kex verification round)
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* param: result_keys_to_origins_map - map between keys for the next round and the other participants they correspond to
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* inoutparam: temp_account_inout - account to perform last update steps on
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*/
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void finalize_kex_update(const std::uint32_t rounds_required,
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kex_origins_map_t result_keys_to_origins_map);
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void finalize_kex_update(const std::uint32_t kex_rounds_required,
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multisig_keyset_map_memsafe_t result_keys_to_origins_map);
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//member variables
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private:
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@ -226,7 +228,7 @@ namespace multisig
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std::uint32_t m_kex_rounds_complete{0};
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// this account's pubkeys for the in-progress key exchange round
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// - either DH derivations (intermediate rounds), H(derivation)*G (final round), empty (when kex is done)
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kex_origins_map_t m_kex_keys_to_origins_map;
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multisig_keyset_map_memsafe_t m_kex_keys_to_origins_map;
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// the account's message for the in-progress key exchange round
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std::string m_next_round_kex_message;
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};
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@ -53,6 +53,30 @@
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namespace multisig
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{
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//----------------------------------------------------------------------------------------------------------------------
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/**
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* INTERNAL
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*
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* brief: check_multisig_config - validate multisig configuration details
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* param: round - the round of the message that should be produced
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* param: threshold - threshold for multisig (M in M-of-N)
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* param: num_signers - number of participants in multisig (N)
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*/
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//----------------------------------------------------------------------------------------------------------------------
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static void check_multisig_config(const std::uint32_t round,
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const std::uint32_t threshold,
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const std::uint32_t num_signers)
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{
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CHECK_AND_ASSERT_THROW_MES(num_signers > 1, "Must be at least one other multisig signer.");
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CHECK_AND_ASSERT_THROW_MES(num_signers <= config::MULTISIG_MAX_SIGNERS,
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"Too many multisig signers specified (limit = 16 to prevent dangerous combinatorial explosion during key exchange).");
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CHECK_AND_ASSERT_THROW_MES(num_signers >= threshold,
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"Multisig threshold may not be larger than number of signers.");
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CHECK_AND_ASSERT_THROW_MES(threshold > 0, "Multisig threshold must be > 0.");
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CHECK_AND_ASSERT_THROW_MES(round > 0, "Multisig kex round must be > 0.");
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CHECK_AND_ASSERT_THROW_MES(round <= multisig_kex_rounds_required(num_signers, threshold) + 1,
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"Trying to process multisig kex for an invalid round.");
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}
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//----------------------------------------------------------------------------------------------------------------------
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/**
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* INTERNAL
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@ -224,50 +248,23 @@ namespace multisig
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/**
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* INTERNAL
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*
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* brief: multisig_kex_make_next_msg - Construct a kex msg for any round > 1 of multisig key construction.
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* brief: multisig_kex_make_round_keys - Makes a kex round's keys.
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* - Involves DH exchanges with pubkeys provided by other participants.
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* - Conserves mapping [pubkey -> DH derivation] : [origin keys of participants that share this secret with you].
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* param: base_privkey - account's base private key, for performing DH exchanges and signing messages
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* param: round - the round of the message that should be produced
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* param: threshold - threshold for multisig (M in M-of-N)
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* param: num_signers - number of participants in multisig (N)
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* param: pubkey_origins_map - map between pubkeys to produce DH derivations with and identity keys of
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* participants who will share each derivation with you
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* outparam: derivation_origins_map_out - map between DH derivations (shared secrets) and identity keys
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* - If msg is not for the last round, then these derivations are also stored in the output message
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* so they can be sent to other participants, who will make more DH derivations for the next kex round.
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* - If msg is for the last round, then these derivations won't be sent to other participants.
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* Instead, they are converted to share secrets (i.e. s = H(derivation)) and multiplied by G.
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* The keys s*G are sent to other participants in the message, so they can be used to produce the final
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* multisig key via generate_multisig_spend_public_key().
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* - The values s are the local account's shares of the final multisig key's private key. The caller can
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* compute those values with calculate_multisig_keypair_from_derivation() (or compute them directly).
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* return: multisig kex message for the specified round
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*/
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//----------------------------------------------------------------------------------------------------------------------
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static multisig_kex_msg multisig_kex_make_next_msg(const crypto::secret_key &base_privkey,
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const std::uint32_t round,
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const std::uint32_t threshold,
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const std::uint32_t num_signers,
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const std::unordered_map<crypto::public_key_memsafe, std::unordered_set<crypto::public_key>> &pubkey_origins_map,
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std::unordered_map<crypto::public_key_memsafe, std::unordered_set<crypto::public_key>> &derivation_origins_map_out)
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static void multisig_kex_make_round_keys(const crypto::secret_key &base_privkey,
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multisig_keyset_map_memsafe_t pubkey_origins_map,
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multisig_keyset_map_memsafe_t &derivation_origins_map_out)
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{
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CHECK_AND_ASSERT_THROW_MES(num_signers > 1, "Must be at least one other multisig signer.");
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CHECK_AND_ASSERT_THROW_MES(num_signers <= config::MULTISIG_MAX_SIGNERS,
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"Too many multisig signers specified (limit = 16 to prevent dangerous combinatorial explosion during key exchange).");
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CHECK_AND_ASSERT_THROW_MES(num_signers >= threshold,
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"Multisig threshold may not be larger than number of signers.");
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CHECK_AND_ASSERT_THROW_MES(threshold > 0, "Multisig threshold must be > 0.");
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CHECK_AND_ASSERT_THROW_MES(round > 1, "Round for next msg must be > 1.");
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CHECK_AND_ASSERT_THROW_MES(round <= multisig_kex_rounds_required(num_signers, threshold),
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"Trying to make key exchange message for an invalid round.");
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// make shared secrets with input pubkeys
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std::vector<crypto::public_key> msg_pubkeys;
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msg_pubkeys.reserve(pubkey_origins_map.size());
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derivation_origins_map_out.clear();
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for (const auto &pubkey_and_origins : pubkey_origins_map)
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for (auto &pubkey_and_origins : pubkey_origins_map)
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{
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// D = 8 * k_base * K_pubkey
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// note: must be mul8 (cofactor), otherwise it is possible to leak to a malicious participant if the local
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@ -281,27 +278,29 @@ namespace multisig
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rct::scalarmultKey(derivation_rct, rct::pk2rct(pubkey_and_origins.first), rct::sk2rct(base_privkey));
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rct::scalarmultKey(derivation_rct, derivation_rct, rct::EIGHT);
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crypto::public_key_memsafe derivation{rct::rct2pk(derivation_rct)};
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// retain mapping between pubkey's origins and the DH derivation
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// note: if msg for last round, then caller must know how to handle these derivations properly
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derivation_origins_map_out[derivation] = pubkey_and_origins.second;
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// if the last round, convert derivations to public keys for the output message
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if (round == multisig_kex_rounds_required(num_signers, threshold))
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// note: if working on last kex round, then caller must know how to handle these derivations properly
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derivation_origins_map_out[rct::rct2pk(derivation_rct)] = std::move(pubkey_and_origins.second);
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}
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}
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//----------------------------------------------------------------------------------------------------------------------
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/**
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* INTERNAL
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*
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* brief: check_messages_round - Check that a set of messages have an expected round number.
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* param: expanded_msgs - set of multisig kex messages to process
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* param: expected_round - round number the kex messages should have
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*/
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//----------------------------------------------------------------------------------------------------------------------
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static void check_messages_round(const std::vector<multisig_kex_msg> &expanded_msgs,
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const std::uint32_t expected_round)
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{
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// derived_pubkey = H(derivation)*G
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crypto::public_key derived_pubkey;
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calculate_multisig_keypair_from_derivation(derivation, derived_pubkey);
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msg_pubkeys.push_back(derived_pubkey);
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}
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// otherwise, put derivations in message directly, so other signers can in turn create derivations (shared secrets)
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// with them for the next round
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else
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msg_pubkeys.push_back(derivation);
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}
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CHECK_AND_ASSERT_THROW_MES(expanded_msgs.size() > 0, "At least one input message expected.");
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const std::uint32_t round{expanded_msgs[0].get_round()};
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CHECK_AND_ASSERT_THROW_MES(round == expected_round, "Messages don't have the expected kex round number.");
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return multisig_kex_msg{round, base_privkey, std::move(msg_pubkeys)};
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for (const auto &expanded_msg : expanded_msgs)
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CHECK_AND_ASSERT_THROW_MES(expanded_msg.get_round() == round, "All messages must have the same kex round number.");
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}
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//----------------------------------------------------------------------------------------------------------------------
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/**
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@ -327,19 +326,19 @@ namespace multisig
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static std::uint32_t multisig_kex_msgs_sanitize_pubkeys(const crypto::public_key &own_pubkey,
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const std::vector<multisig_kex_msg> &expanded_msgs,
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const std::vector<crypto::public_key> &exclude_pubkeys,
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std::unordered_map<crypto::public_key_memsafe, std::unordered_set<crypto::public_key>> &sanitized_pubkeys_out)
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multisig_keyset_map_memsafe_t &sanitized_pubkeys_out)
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{
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// all messages should have the same round (redundant sanity check)
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CHECK_AND_ASSERT_THROW_MES(expanded_msgs.size() > 0, "At least one input message expected.");
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const std::uint32_t round{expanded_msgs[0].get_round()};
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check_messages_round(expanded_msgs, round);
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std::uint32_t round = expanded_msgs[0].get_round();
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sanitized_pubkeys_out.clear();
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// get all pubkeys from input messages, add them to pubkey:origins map
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// - origins = all the signing pubkeys that recommended a given msg pubkey
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for (const auto &expanded_msg : expanded_msgs)
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{
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CHECK_AND_ASSERT_THROW_MES(expanded_msg.get_round() == round, "All messages must have the same kex round number.");
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// ignore messages from self
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if (expanded_msg.get_signing_pubkey() == own_pubkey)
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continue;
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@ -378,7 +377,7 @@ namespace multisig
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*
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* brief: evaluate_multisig_kex_round_msgs - Evaluate pubkeys from a kex round in order to prepare for the next round.
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* - Sanitizes input msgs.
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* - Require uniqueness in: 'signers', 'exclude_pubkeys'.
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* - Require uniqueness in: 'exclude_pubkeys'.
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* - Requires each input pubkey be recommended by 'num_recommendations = expected_round' msg signers.
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* - For a final multisig key to be truly 'M-of-N', each of the the private key's components must be
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* shared by (N - M + 1) signers.
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@ -388,39 +387,21 @@ namespace multisig
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* with the local account.
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* - Requires that 'exclude_pubkeys' has [num_signers - 1 CHOOSE (expected_round - 1)] pubkeys.
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* - These should be derivations the local account has corresponding to round 'expected_round'.
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* param: base_privkey - multisig account's base private key
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* param: base_pubkey - multisig account's base public key
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* param: expected_round - expected kex round of input messages
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* param: threshold - threshold for multisig (M in M-of-N)
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* param: signers - expected participants in multisig kex
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||||
* param: expanded_msgs - set of multisig kex messages to process
|
||||
* param: exclude_pubkeys - derivations held by the local account corresponding to round 'expected_round'
|
||||
* return: fully sanitized and validated pubkey:origins map for building the account's next kex round message
|
||||
*/
|
||||
//----------------------------------------------------------------------------------------------------------------------
|
||||
static std::unordered_map<crypto::public_key_memsafe, std::unordered_set<crypto::public_key>> evaluate_multisig_kex_round_msgs(
|
||||
static multisig_keyset_map_memsafe_t evaluate_multisig_kex_round_msgs(
|
||||
const crypto::public_key &base_pubkey,
|
||||
const std::uint32_t expected_round,
|
||||
const std::uint32_t threshold,
|
||||
const std::vector<crypto::public_key> &signers,
|
||||
const std::vector<multisig_kex_msg> &expanded_msgs,
|
||||
const std::vector<crypto::public_key> &exclude_pubkeys)
|
||||
{
|
||||
CHECK_AND_ASSERT_THROW_MES(signers.size() > 1, "Must be at least one other multisig signer.");
|
||||
CHECK_AND_ASSERT_THROW_MES(signers.size() <= config::MULTISIG_MAX_SIGNERS,
|
||||
"Too many multisig signers specified (limit = 16 to prevent dangerous combinatorial explosion during key exchange).");
|
||||
CHECK_AND_ASSERT_THROW_MES(signers.size() >= threshold, "Multisig threshold may not be larger than number of signers.");
|
||||
CHECK_AND_ASSERT_THROW_MES(threshold > 0, "Multisig threshold must be > 0.");
|
||||
CHECK_AND_ASSERT_THROW_MES(expected_round > 0, "Expected round must be > 0.");
|
||||
CHECK_AND_ASSERT_THROW_MES(expected_round <= multisig_kex_rounds_required(signers.size(), threshold),
|
||||
"Expecting key exchange messages for an invalid round.");
|
||||
|
||||
std::unordered_map<crypto::public_key_memsafe, std::unordered_set<crypto::public_key>> pubkey_origins_map;
|
||||
|
||||
// leave early in the last round of 1-of-N, where all signers share a key so the local signer doesn't care about
|
||||
// recommendations from other signers
|
||||
if (threshold == 1 && expected_round == multisig_kex_rounds_required(signers.size(), threshold))
|
||||
return pubkey_origins_map;
|
||||
|
||||
// exclude_pubkeys should all be unique
|
||||
for (auto it = exclude_pubkeys.begin(); it != exclude_pubkeys.end(); ++it)
|
||||
{
|
||||
|
|
@ -429,7 +410,8 @@ namespace multisig
|
|||
}
|
||||
|
||||
// sanitize input messages
|
||||
std::uint32_t round = multisig_kex_msgs_sanitize_pubkeys(base_pubkey, expanded_msgs, exclude_pubkeys, pubkey_origins_map);
|
||||
multisig_keyset_map_memsafe_t pubkey_origins_map;
|
||||
const std::uint32_t round = multisig_kex_msgs_sanitize_pubkeys(base_pubkey, expanded_msgs, exclude_pubkeys, pubkey_origins_map);
|
||||
CHECK_AND_ASSERT_THROW_MES(round == expected_round,
|
||||
"Kex messages were for round [" << round << "], but expected round is [" << expected_round << "]");
|
||||
|
||||
|
|
@ -486,10 +468,10 @@ namespace multisig
|
|||
// - Each origin should have a shared key with each group of size 'round - 1'.
|
||||
// Note: Keys shared with local are ignored to facilitate kex round boosting, where one or more signers may
|
||||
// have boosted the local signer (implying they didn't have access to the local signer's previous round msg).
|
||||
std::uint32_t expected_recommendations_others = n_choose_k_f(signers.size() - 2, round - 1);
|
||||
const std::uint32_t expected_recommendations_others = n_choose_k_f(signers.size() - 2, round - 1);
|
||||
|
||||
// local: (N - 1) choose (msg_round_num - 1)
|
||||
std::uint32_t expected_recommendations_self = n_choose_k_f(signers.size() - 1, round - 1);
|
||||
const std::uint32_t expected_recommendations_self = n_choose_k_f(signers.size() - 1, round - 1);
|
||||
|
||||
// note: expected_recommendations_others would be 0 in the last round of 1-of-N, but we return early for that case
|
||||
CHECK_AND_ASSERT_THROW_MES(expected_recommendations_self > 0 && expected_recommendations_others > 0,
|
||||
|
|
@ -517,7 +499,60 @@ namespace multisig
|
|||
/**
|
||||
* INTERNAL
|
||||
*
|
||||
* brief: multisig_kex_process_round - Process kex messages for the active kex round.
|
||||
* brief: evaluate_multisig_post_kex_round_msgs - Evaluate messages for the post-kex verification round.
|
||||
* - Sanitizes input msgs.
|
||||
* - Requires that only one pubkey is recommended.
|
||||
* - Requires that all signers (other than self) recommend that one pubkey.
|
||||
* param: base_pubkey - multisig account's base public key
|
||||
* param: expected_round - expected kex round of input messages
|
||||
* param: signers - expected participants in multisig kex
|
||||
* param: expanded_msgs - set of multisig kex messages to process
|
||||
* return: sanitized and validated pubkey:origins map
|
||||
*/
|
||||
//----------------------------------------------------------------------------------------------------------------------
|
||||
static multisig_keyset_map_memsafe_t evaluate_multisig_post_kex_round_msgs(
|
||||
const crypto::public_key &base_pubkey,
|
||||
const std::uint32_t expected_round,
|
||||
const std::vector<crypto::public_key> &signers,
|
||||
const std::vector<multisig_kex_msg> &expanded_msgs)
|
||||
{
|
||||
// sanitize input messages
|
||||
const std::vector<crypto::public_key> dummy;
|
||||
multisig_keyset_map_memsafe_t pubkey_origins_map;
|
||||
const std::uint32_t round = multisig_kex_msgs_sanitize_pubkeys(base_pubkey, expanded_msgs, dummy, pubkey_origins_map);
|
||||
CHECK_AND_ASSERT_THROW_MES(round == expected_round,
|
||||
"Kex messages were for round [" << round << "], but expected round is [" << expected_round << "]");
|
||||
|
||||
// evaluate pubkeys collected
|
||||
|
||||
// 1) there should only be two pubkeys
|
||||
CHECK_AND_ASSERT_THROW_MES(pubkey_origins_map.size() == 2,
|
||||
"Multisig post-kex round messages from other signers did not all contain two pubkeys.");
|
||||
|
||||
// 2) both keys should be recommended by the same set of signers
|
||||
CHECK_AND_ASSERT_THROW_MES(pubkey_origins_map.begin()->second == (++(pubkey_origins_map.begin()))->second,
|
||||
"Multisig post-kex round messages from other signers did not all recommend the same pubkey pair.");
|
||||
|
||||
// 3) all signers should be present in the recommendation list
|
||||
auto origins = pubkey_origins_map.begin()->second;
|
||||
origins.insert(base_pubkey); //add self
|
||||
|
||||
CHECK_AND_ASSERT_THROW_MES(origins.size() == signers.size(),
|
||||
"Multisig post-kex round message origins don't line up with multisig signer set.");
|
||||
|
||||
for (const crypto::public_key &signer : signers)
|
||||
{
|
||||
CHECK_AND_ASSERT_THROW_MES(origins.find(signer) != origins.end(),
|
||||
"Could not find an expected signer in multisig post-kex round messages (all signers expected).");
|
||||
}
|
||||
|
||||
return pubkey_origins_map;
|
||||
}
|
||||
//----------------------------------------------------------------------------------------------------------------------
|
||||
/**
|
||||
* INTERNAL
|
||||
*
|
||||
* brief: multisig_kex_process_round_msgs - Process kex messages for the active kex round.
|
||||
* - A wrapper around evaluate_multisig_kex_round_msgs() -> multisig_kex_make_next_msg().
|
||||
* - In other words, evaluate the input messages and try to make a message for the next round.
|
||||
* - Note: Must be called on the final round's msgs to evaluate the final key components
|
||||
|
|
@ -536,43 +571,62 @@ namespace multisig
|
|||
* return: multisig kex message for next round, or empty message if 'current_round' is the final round
|
||||
*/
|
||||
//----------------------------------------------------------------------------------------------------------------------
|
||||
static multisig_kex_msg multisig_kex_process_round(const crypto::secret_key &base_privkey,
|
||||
static void multisig_kex_process_round_msgs(const crypto::secret_key &base_privkey,
|
||||
const crypto::public_key &base_pubkey,
|
||||
const std::uint32_t current_round,
|
||||
const std::uint32_t threshold,
|
||||
const std::vector<crypto::public_key> &signers,
|
||||
const std::vector<multisig_kex_msg> &expanded_msgs,
|
||||
const std::vector<crypto::public_key> &exclude_pubkeys,
|
||||
std::unordered_map<crypto::public_key_memsafe, std::unordered_set<crypto::public_key>> &keys_to_origins_map_out)
|
||||
multisig_keyset_map_memsafe_t &keys_to_origins_map_out)
|
||||
{
|
||||
// evaluate messages
|
||||
std::unordered_map<crypto::public_key_memsafe, std::unordered_set<crypto::public_key>> evaluated_pubkeys =
|
||||
evaluate_multisig_kex_round_msgs(base_pubkey, current_round, threshold, signers, expanded_msgs, exclude_pubkeys);
|
||||
check_multisig_config(current_round, threshold, signers.size());
|
||||
const std::uint32_t kex_rounds_required{multisig_kex_rounds_required(signers.size(), threshold)};
|
||||
|
||||
// produce message for next round (if there is one)
|
||||
if (current_round < multisig_kex_rounds_required(signers.size(), threshold))
|
||||
// process messages into a [pubkey : {origins}] map
|
||||
multisig_keyset_map_memsafe_t evaluated_pubkeys;
|
||||
|
||||
if (threshold == 1 && current_round == kex_rounds_required)
|
||||
{
|
||||
return multisig_kex_make_next_msg(base_privkey,
|
||||
current_round + 1,
|
||||
threshold,
|
||||
signers.size(),
|
||||
evaluated_pubkeys,
|
||||
keys_to_origins_map_out);
|
||||
// in the last main kex round of 1-of-N, all signers share a key so the local signer doesn't care about evaluating
|
||||
// recommendations from other signers
|
||||
}
|
||||
else
|
||||
else if (current_round <= kex_rounds_required)
|
||||
{
|
||||
// no more rounds, so collect the key shares recommended by other signers for the final aggregate key
|
||||
keys_to_origins_map_out.clear();
|
||||
keys_to_origins_map_out = std::move(evaluated_pubkeys);
|
||||
// for normal kex rounds, fully evaluate kex round messages
|
||||
evaluated_pubkeys = evaluate_multisig_kex_round_msgs(base_pubkey,
|
||||
current_round,
|
||||
signers,
|
||||
expanded_msgs,
|
||||
exclude_pubkeys);
|
||||
}
|
||||
else //(current_round == kex_rounds_required + 1)
|
||||
{
|
||||
// for the post-kex verification round, validate the last kex round's messages
|
||||
evaluated_pubkeys = evaluate_multisig_post_kex_round_msgs(base_pubkey,
|
||||
current_round,
|
||||
signers,
|
||||
expanded_msgs);
|
||||
}
|
||||
|
||||
return multisig_kex_msg{};
|
||||
// prepare keys-to-origins map for updating the multisig account
|
||||
if (current_round < kex_rounds_required)
|
||||
{
|
||||
// normal kex round: make new keys
|
||||
multisig_kex_make_round_keys(base_privkey, std::move(evaluated_pubkeys), keys_to_origins_map_out);
|
||||
}
|
||||
else if (current_round >= kex_rounds_required)
|
||||
{
|
||||
// last kex round: collect the key shares recommended by other signers for the final aggregate key
|
||||
// post-kex verification round: save the keys found in input messages
|
||||
keys_to_origins_map_out = std::move(evaluated_pubkeys);
|
||||
}
|
||||
}
|
||||
//----------------------------------------------------------------------------------------------------------------------
|
||||
// multisig_account: INTERNAL
|
||||
//----------------------------------------------------------------------------------------------------------------------
|
||||
void multisig_account::initialize_kex_update(const std::vector<multisig_kex_msg> &expanded_msgs,
|
||||
const std::uint32_t rounds_required,
|
||||
const std::uint32_t kex_rounds_required,
|
||||
std::vector<crypto::public_key> &exclude_pubkeys_out)
|
||||
{
|
||||
if (m_kex_rounds_complete == 0)
|
||||
|
|
@ -605,7 +659,7 @@ namespace multisig
|
|||
"Failed to derive public key");
|
||||
|
||||
// if N-of-N, then the base privkey will be used directly to make the account's share of the final key
|
||||
if (rounds_required == 1)
|
||||
if (kex_rounds_required == 1)
|
||||
{
|
||||
m_multisig_privkeys.clear();
|
||||
m_multisig_privkeys.emplace_back(m_base_privkey);
|
||||
|
|
@ -629,13 +683,29 @@ namespace multisig
|
|||
//----------------------------------------------------------------------------------------------------------------------
|
||||
// multisig_account: INTERNAL
|
||||
//----------------------------------------------------------------------------------------------------------------------
|
||||
void multisig_account::finalize_kex_update(const std::uint32_t rounds_required,
|
||||
std::unordered_map<crypto::public_key_memsafe, std::unordered_set<crypto::public_key>> result_keys_to_origins_map)
|
||||
void multisig_account::finalize_kex_update(const std::uint32_t kex_rounds_required,
|
||||
multisig_keyset_map_memsafe_t result_keys_to_origins_map)
|
||||
{
|
||||
std::vector<crypto::public_key> next_msg_keys;
|
||||
|
||||
// prepare for next round (or complete the multisig account fully)
|
||||
if (rounds_required == m_kex_rounds_complete + 1)
|
||||
if (m_kex_rounds_complete == kex_rounds_required)
|
||||
{
|
||||
// finished (have set of msgs to complete address)
|
||||
// post-kex verification round: check that the multisig pubkey and common pubkey were recommended by other signers
|
||||
CHECK_AND_ASSERT_THROW_MES(result_keys_to_origins_map.count(m_multisig_pubkey) > 0,
|
||||
"Multisig post-kex round: expected multisig pubkey wasn't found in other signers' messages.");
|
||||
CHECK_AND_ASSERT_THROW_MES(result_keys_to_origins_map.count(m_common_pubkey) > 0,
|
||||
"Multisig post-kex round: expected common pubkey wasn't found in other signers' messages.");
|
||||
|
||||
// save keys that should be recommended to other signers
|
||||
// - for convenience, re-recommend the post-kex verification message once an account is complete
|
||||
next_msg_keys.reserve(2);
|
||||
next_msg_keys.push_back(m_multisig_pubkey);
|
||||
next_msg_keys.push_back(m_common_pubkey);
|
||||
}
|
||||
else if (m_kex_rounds_complete + 1 == kex_rounds_required)
|
||||
{
|
||||
// finished with main kex rounds (have set of msgs to complete address)
|
||||
|
||||
// when 'completing the final round', result keys are other signers' shares of the final key
|
||||
std::vector<crypto::public_key> result_keys;
|
||||
|
|
@ -652,8 +722,14 @@ namespace multisig
|
|||
// no longer need the account's pubkeys saved for this round (they were only used to build exclude_pubkeys)
|
||||
// TODO: record [pre-aggregation pubkeys : origins] map for aggregation-style signing
|
||||
m_kex_keys_to_origins_map.clear();
|
||||
|
||||
// save keys that should be recommended to other signers
|
||||
// - for post-kex verification, recommend the multisig pubkeys to notify other signers that the local signer is done
|
||||
next_msg_keys.reserve(2);
|
||||
next_msg_keys.push_back(m_multisig_pubkey);
|
||||
next_msg_keys.push_back(m_common_pubkey);
|
||||
}
|
||||
else if (rounds_required == m_kex_rounds_complete + 2)
|
||||
else if (m_kex_rounds_complete + 2 == kex_rounds_required)
|
||||
{
|
||||
// one more round (must send/receive one more set of kex msgs)
|
||||
// - at this point, have local signer's pre-aggregation private key shares of the final address
|
||||
|
|
@ -668,6 +744,7 @@ namespace multisig
|
|||
m_multisig_privkeys.reserve(result_keys_to_origins_map.size());
|
||||
|
||||
m_kex_keys_to_origins_map.clear();
|
||||
next_msg_keys.reserve(result_keys_to_origins_map.size());
|
||||
|
||||
for (const auto &derivation_and_origins : result_keys_to_origins_map)
|
||||
{
|
||||
|
|
@ -679,37 +756,59 @@ namespace multisig
|
|||
|
||||
// save the account's kex key mappings for this round [derived pubkey : other signers who will have the same key]
|
||||
m_kex_keys_to_origins_map[derived_pubkey] = std::move(derivation_and_origins.second);
|
||||
|
||||
// save keys that should be recommended to other signers
|
||||
// - The keys multisig_key*G are sent to other participants in the message, so they can be used to produce the final
|
||||
// multisig key via generate_multisig_spend_public_key().
|
||||
next_msg_keys.push_back(derived_pubkey);
|
||||
}
|
||||
}
|
||||
else
|
||||
else //(m_kex_rounds_complete + 3 <= kex_rounds_required)
|
||||
{
|
||||
// next round is an 'intermediate' key exchange round, so there is nothing special to do here
|
||||
|
||||
// save the account's kex keys for this round [DH derivation : other signers who will have the same derivation]
|
||||
// save keys that should be recommended to other signers
|
||||
// - Send this round's DH derivations to other participants, who will make more DH derivations for the following round.
|
||||
next_msg_keys.reserve(result_keys_to_origins_map.size());
|
||||
|
||||
for (const auto &derivation_and_origins : result_keys_to_origins_map)
|
||||
next_msg_keys.push_back(derivation_and_origins.first);
|
||||
|
||||
// save the account's kex keys for this round [DH derivation : other signers who should have the same derivation]
|
||||
m_kex_keys_to_origins_map = std::move(result_keys_to_origins_map);
|
||||
}
|
||||
|
||||
// a full set of msgs has been collected and processed, so the 'round is complete'
|
||||
++m_kex_rounds_complete;
|
||||
|
||||
// make next round's message (or reproduce the post-kex verification round if kex is complete)
|
||||
m_next_round_kex_message = multisig_kex_msg{
|
||||
(m_kex_rounds_complete > kex_rounds_required ? kex_rounds_required : m_kex_rounds_complete) + 1,
|
||||
m_base_privkey,
|
||||
std::move(next_msg_keys)}.get_msg();
|
||||
}
|
||||
//----------------------------------------------------------------------------------------------------------------------
|
||||
// multisig_account: INTERNAL
|
||||
//----------------------------------------------------------------------------------------------------------------------
|
||||
void multisig_account::kex_update_impl(const std::vector<multisig_kex_msg> &expanded_msgs)
|
||||
{
|
||||
CHECK_AND_ASSERT_THROW_MES(expanded_msgs.size() > 0, "No key exchange messages passed in.");
|
||||
// check messages are for the expected kex round
|
||||
check_messages_round(expanded_msgs, m_kex_rounds_complete + 1);
|
||||
|
||||
const std::uint32_t rounds_required = multisig_kex_rounds_required(m_signers.size(), m_threshold);
|
||||
CHECK_AND_ASSERT_THROW_MES(rounds_required > 0, "Multisig kex rounds required unexpectedly 0.");
|
||||
// check kex round count
|
||||
const std::uint32_t kex_rounds_required{multisig_kex_rounds_required(m_signers.size(), m_threshold)};
|
||||
|
||||
CHECK_AND_ASSERT_THROW_MES(kex_rounds_required > 0, "Multisig kex rounds required unexpectedly 0.");
|
||||
CHECK_AND_ASSERT_THROW_MES(m_kex_rounds_complete < kex_rounds_required + 1,
|
||||
"Multisig kex has already completed all required rounds (including post-kex verification).");
|
||||
|
||||
// initialize account update
|
||||
std::vector<crypto::public_key> exclude_pubkeys;
|
||||
initialize_kex_update(expanded_msgs, rounds_required, exclude_pubkeys);
|
||||
initialize_kex_update(expanded_msgs, kex_rounds_required, exclude_pubkeys);
|
||||
|
||||
// evaluate messages and get this account's kex msg for the next round
|
||||
std::unordered_map<crypto::public_key_memsafe, std::unordered_set<crypto::public_key>> result_keys_to_origins_map;
|
||||
|
||||
m_next_round_kex_message = multisig_kex_process_round(
|
||||
// process messages into a [pubkey : {origins}] map
|
||||
multisig_keyset_map_memsafe_t result_keys_to_origins_map;
|
||||
multisig_kex_process_round_msgs(
|
||||
m_base_privkey,
|
||||
m_base_pubkey,
|
||||
m_kex_rounds_complete + 1,
|
||||
|
|
@ -717,10 +816,10 @@ namespace multisig
|
|||
m_signers,
|
||||
expanded_msgs,
|
||||
exclude_pubkeys,
|
||||
result_keys_to_origins_map).get_msg();
|
||||
result_keys_to_origins_map);
|
||||
|
||||
// finish account update
|
||||
finalize_kex_update(rounds_required, std::move(result_keys_to_origins_map));
|
||||
finalize_kex_update(kex_rounds_required, std::move(result_keys_to_origins_map));
|
||||
}
|
||||
//----------------------------------------------------------------------------------------------------------------------
|
||||
} //namespace multisig
|
||||
|
|
|
|||
|
|
@ -1091,7 +1091,9 @@ bool simple_wallet::make_multisig_main(const std::vector<std::string> &args, boo
|
|||
auto local_args = args;
|
||||
local_args.erase(local_args.begin());
|
||||
std::string multisig_extra_info = m_wallet->make_multisig(orig_pwd_container->password(), local_args, threshold);
|
||||
if (!multisig_extra_info.empty())
|
||||
bool ready;
|
||||
m_wallet->multisig(&ready);
|
||||
if (!ready)
|
||||
{
|
||||
success_msg_writer() << tr("Another step is needed");
|
||||
success_msg_writer() << multisig_extra_info;
|
||||
|
|
@ -1152,7 +1154,7 @@ bool simple_wallet::exchange_multisig_keys_main(const std::vector<std::string> &
|
|||
return false;
|
||||
}
|
||||
|
||||
if (args.size() < 2)
|
||||
if (args.size() < 1)
|
||||
{
|
||||
PRINT_USAGE(USAGE_EXCHANGE_MULTISIG_KEYS);
|
||||
return false;
|
||||
|
|
@ -1161,7 +1163,9 @@ bool simple_wallet::exchange_multisig_keys_main(const std::vector<std::string> &
|
|||
try
|
||||
{
|
||||
std::string multisig_extra_info = m_wallet->exchange_multisig_keys(orig_pwd_container->password(), args);
|
||||
if (!multisig_extra_info.empty())
|
||||
bool ready;
|
||||
m_wallet->multisig(&ready);
|
||||
if (!ready)
|
||||
{
|
||||
message_writer() << tr("Another step is needed");
|
||||
message_writer() << multisig_extra_info;
|
||||
|
|
|
|||
|
|
@ -5088,7 +5088,7 @@ std::string wallet2::exchange_multisig_keys(const epee::wipeable_string &passwor
|
|||
|
||||
// reconstruct multisig account
|
||||
crypto::public_key dummy;
|
||||
multisig::multisig_account::kex_origins_map_t kex_origins_map;
|
||||
multisig::multisig_keyset_map_memsafe_t kex_origins_map;
|
||||
|
||||
for (const auto &derivation : m_multisig_derivations)
|
||||
kex_origins_map[derivation];
|
||||
|
|
@ -5101,7 +5101,7 @@ std::string wallet2::exchange_multisig_keys(const epee::wipeable_string &passwor
|
|||
get_account().get_keys().m_multisig_keys,
|
||||
get_account().get_keys().m_view_secret_key,
|
||||
m_account_public_address.m_spend_public_key,
|
||||
dummy, //common pubkey: not used
|
||||
m_account_public_address.m_view_public_key,
|
||||
m_multisig_rounds_passed,
|
||||
std::move(kex_origins_map),
|
||||
""
|
||||
|
|
@ -5188,7 +5188,10 @@ bool wallet2::multisig(bool *ready, uint32_t *threshold, uint32_t *total) const
|
|||
if (total)
|
||||
*total = m_multisig_signers.size();
|
||||
if (ready)
|
||||
*ready = !(get_account().get_keys().m_account_address.m_spend_public_key == rct::rct2pk(rct::identity()));
|
||||
{
|
||||
*ready = !(get_account().get_keys().m_account_address.m_spend_public_key == rct::rct2pk(rct::identity())) &&
|
||||
(m_multisig_rounds_passed == multisig::multisig_kex_rounds_required(m_multisig_signers.size(), m_multisig_threshold) + 1);
|
||||
}
|
||||
return true;
|
||||
}
|
||||
//----------------------------------------------------------------------------------------------------
|
||||
|
|
|
|||
|
|
@ -4132,7 +4132,8 @@ namespace tools
|
|||
try
|
||||
{
|
||||
res.multisig_info = m_wallet->exchange_multisig_keys(req.password, req.multisig_info);
|
||||
if (res.multisig_info.empty())
|
||||
m_wallet->multisig(&ready);
|
||||
if (ready)
|
||||
{
|
||||
res.address = m_wallet->get_account().get_public_address_str(m_wallet->nettype());
|
||||
}
|
||||
|
|
|
|||
|
|
@ -81,8 +81,6 @@ static bool make_multisig_accounts(std::vector<cryptonote::account_base> &accoun
|
|||
for (std::size_t account_index{0}; account_index < accounts.size(); ++account_index)
|
||||
{
|
||||
multisig_accounts[account_index].initialize_kex(threshold, signers, round_msgs);
|
||||
|
||||
if (!multisig_accounts[account_index].multisig_is_ready())
|
||||
temp_round_msgs[account_index] = multisig_accounts[account_index].get_next_kex_round_msg();
|
||||
}
|
||||
|
||||
|
|
@ -94,8 +92,6 @@ static bool make_multisig_accounts(std::vector<cryptonote::account_base> &accoun
|
|||
for (std::size_t account_index{0}; account_index < multisig_accounts.size(); ++account_index)
|
||||
{
|
||||
multisig_accounts[account_index].kex_update(round_msgs);
|
||||
|
||||
if (!multisig_accounts[account_index].multisig_is_ready())
|
||||
temp_round_msgs[account_index] = multisig_accounts[account_index].get_next_kex_round_msg();
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -125,17 +125,18 @@ class MultisigTest():
|
|||
for i in range(N_total):
|
||||
res = self.wallet[i].is_multisig()
|
||||
assert res.multisig == True
|
||||
assert res.ready == (M_threshold == N_total)
|
||||
assert not res.ready
|
||||
assert res.threshold == M_threshold
|
||||
assert res.total == N_total
|
||||
|
||||
while True:
|
||||
n_empty = 0
|
||||
for i in range(len(next_stage)):
|
||||
if len(next_stage[i]) == 0:
|
||||
n_empty += 1
|
||||
assert n_empty == 0 or n_empty == len(next_stage)
|
||||
if n_empty == len(next_stage):
|
||||
n_ready = 0
|
||||
for i in range(N_total):
|
||||
res = self.wallet[i].is_multisig()
|
||||
if res.ready == True:
|
||||
n_ready += 1
|
||||
assert n_ready == 0 or n_ready == N_total
|
||||
if n_ready == N_total:
|
||||
break
|
||||
info = next_stage
|
||||
next_stage = []
|
||||
|
|
@ -162,54 +163,72 @@ class MultisigTest():
|
|||
'peeled mixture ionic radar utopia puddle buying illness nuns gadget river spout cavernous bounced paradise drunk looking cottage jump tequila melting went winter adjust spout',
|
||||
'dilute gutter certain antics pamphlet macro enjoy left slid guarded bogeys upload nineteen bomb jubilee enhanced irritate turnip eggs swung jukebox loudly reduce sedan slid',
|
||||
]
|
||||
info = []
|
||||
wallet = [None, None, None]
|
||||
for i in range(3):
|
||||
wallet[i] = Wallet(idx = i)
|
||||
try: wallet[i].close_wallet()
|
||||
info2of2 = []
|
||||
wallet2of2 = [None, None]
|
||||
for i in range(2):
|
||||
wallet2of2[i] = Wallet(idx = i)
|
||||
try: wallet2of2[i].close_wallet()
|
||||
except: pass
|
||||
res = wallet[i].restore_deterministic_wallet(seed = seeds[i])
|
||||
res = wallet[i].is_multisig()
|
||||
res = wallet2of2[i].restore_deterministic_wallet(seed = seeds[i])
|
||||
res = wallet2of2[i].is_multisig()
|
||||
assert not res.multisig
|
||||
res = wallet[i].prepare_multisig()
|
||||
res = wallet2of2[i].prepare_multisig()
|
||||
assert len(res.multisig_info) > 0
|
||||
info.append(res.multisig_info)
|
||||
info2of2.append(res.multisig_info)
|
||||
|
||||
for i in range(3):
|
||||
ok = False
|
||||
try: res = wallet[i].exchange_multisig_keys(info)
|
||||
except: ok = True
|
||||
assert ok
|
||||
res = wallet[i].is_multisig()
|
||||
assert not res.multisig
|
||||
|
||||
res = wallet[0].make_multisig(info[0:2], 2)
|
||||
res = wallet[0].is_multisig()
|
||||
kex_info = []
|
||||
res = wallet2of2[0].make_multisig(info2of2, 2)
|
||||
kex_info.append(res.multisig_info)
|
||||
res = wallet2of2[1].make_multisig(info2of2, 2)
|
||||
kex_info.append(res.multisig_info)
|
||||
res = wallet2of2[0].exchange_multisig_keys(kex_info)
|
||||
res = wallet2of2[0].is_multisig()
|
||||
assert res.multisig
|
||||
assert res.ready
|
||||
|
||||
ok = False
|
||||
try: res = wallet[0].prepare_multisig()
|
||||
try: res = wallet2of2[0].prepare_multisig()
|
||||
except: ok = True
|
||||
assert ok
|
||||
|
||||
ok = False
|
||||
try: res = wallet[0].make_multisig(info[0:2], 2)
|
||||
try: res = wallet2of2[0].make_multisig(info2of2, 2)
|
||||
except: ok = True
|
||||
assert ok
|
||||
|
||||
res = wallet[1].make_multisig(info, 2)
|
||||
res = wallet[1].is_multisig()
|
||||
info2of3 = []
|
||||
wallet2of3 = [None, None, None]
|
||||
for i in range(3):
|
||||
wallet2of3[i] = Wallet(idx = i)
|
||||
try: wallet2of3[i].close_wallet()
|
||||
except: pass
|
||||
res = wallet2of3[i].restore_deterministic_wallet(seed = seeds[i])
|
||||
res = wallet2of3[i].is_multisig()
|
||||
assert not res.multisig
|
||||
res = wallet2of3[i].prepare_multisig()
|
||||
assert len(res.multisig_info) > 0
|
||||
info2of3.append(res.multisig_info)
|
||||
|
||||
for i in range(3):
|
||||
ok = False
|
||||
try: res = wallet2of3[i].exchange_multisig_keys(info)
|
||||
except: ok = True
|
||||
assert ok
|
||||
res = wallet2of3[i].is_multisig()
|
||||
assert not res.multisig
|
||||
|
||||
res = wallet2of3[1].make_multisig(info2of3, 2)
|
||||
res = wallet2of3[1].is_multisig()
|
||||
assert res.multisig
|
||||
assert not res.ready
|
||||
|
||||
ok = False
|
||||
try: res = wallet[1].prepare_multisig()
|
||||
try: res = wallet2of3[1].prepare_multisig()
|
||||
except: ok = True
|
||||
assert ok
|
||||
|
||||
ok = False
|
||||
try: res = wallet[1].make_multisig(info[0:2], 2)
|
||||
try: res = wallet2of3[1].make_multisig(info2of3[0:2], 2)
|
||||
except: ok = True
|
||||
assert ok
|
||||
|
||||
|
|
|
|||
|
|
@ -120,7 +120,7 @@ static void check_results(const std::vector<std::string> &intermediate_infos,
|
|||
|
||||
for (size_t i = 0; i < wallets.size(); ++i)
|
||||
{
|
||||
EXPECT_TRUE(intermediate_infos[i].empty());
|
||||
EXPECT_TRUE(!intermediate_infos[i].empty());
|
||||
bool ready;
|
||||
uint32_t threshold, total;
|
||||
EXPECT_TRUE(wallets[i].multisig(&ready, &threshold, &total));
|
||||
|
|
@ -171,7 +171,7 @@ static void make_wallets(std::vector<tools::wallet2>& wallets, unsigned int M)
|
|||
{
|
||||
ASSERT_TRUE(wallets.size() > 1 && wallets.size() <= KEYS_COUNT);
|
||||
ASSERT_TRUE(M <= wallets.size());
|
||||
std::uint32_t rounds_required = multisig::multisig_kex_rounds_required(wallets.size(), M);
|
||||
std::uint32_t total_rounds_required = multisig::multisig_kex_rounds_required(wallets.size(), M) + 1;
|
||||
std::uint32_t rounds_complete{0};
|
||||
|
||||
// initialize wallets, get first round multisig kex msgs
|
||||
|
|
@ -203,18 +203,17 @@ static void make_wallets(std::vector<tools::wallet2>& wallets, unsigned int M)
|
|||
++rounds_complete;
|
||||
|
||||
// perform kex rounds until kex is complete
|
||||
while (!intermediate_infos[0].empty())
|
||||
{
|
||||
bool ready{false};
|
||||
bool ready;
|
||||
wallets[0].multisig(&ready);
|
||||
EXPECT_FALSE(ready);
|
||||
|
||||
while (!ready)
|
||||
{
|
||||
intermediate_infos = exchange_round(wallets, intermediate_infos);
|
||||
wallets[0].multisig(&ready);
|
||||
|
||||
++rounds_complete;
|
||||
}
|
||||
|
||||
EXPECT_EQ(rounds_required, rounds_complete);
|
||||
EXPECT_EQ(total_rounds_required, rounds_complete);
|
||||
|
||||
check_results(intermediate_infos, wallets, M);
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue