From 84cc3b916e45ef9c2f3b71abc9f36808095adac8 Mon Sep 17 00:00:00 2001 From: Riccardo Spagni Date: Sun, 7 Oct 2018 19:57:26 +0200 Subject: Merge pull request #4036 9acf42d3 Multisig M/N functionality core tests added (naughtyfox) 9f3963e8 Arbitrary M/N multisig schemes: * support in wallet2 * support in monero-wallet-cli * support in monero-wallet-rpc * support in wallet api * support in monero-gen-trusted-multisig * unit tests for multisig wallets creation (naughtyfox) --- src/multisig/multisig.h | 24 +++++++++++++++++++++++- 1 file changed, 23 insertions(+), 1 deletion(-) (limited to 'src/multisig/multisig.h') diff --git a/src/multisig/multisig.h b/src/multisig/multisig.h index f95611441..93a756812 100644 --- a/src/multisig/multisig.h +++ b/src/multisig/multisig.h @@ -41,9 +41,31 @@ namespace cryptonote crypto::secret_key get_multisig_blinded_secret_key(const crypto::secret_key &key); void generate_multisig_N_N(const account_keys &keys, const std::vector &spend_keys, std::vector &multisig_keys, rct::key &spend_skey, rct::key &spend_pkey); void generate_multisig_N1_N(const account_keys &keys, const std::vector &spend_keys, std::vector &multisig_keys, rct::key &spend_skey, rct::key &spend_pkey); + /** + * @brief generate_multisig_derivations performs common DH key derivation. + * Each middle round in M/N scheme is DH exchange of public multisig keys of other participants multiplied by secret spend key of current participant. + * this functions does the following: new multisig key = secret spend * public multisig key + * @param keys - current wallet's keys + * @param derivations - public multisig keys of other participants + * @return new public multisig keys derived from previous round. This data needs to be exchange with other participants + */ + std::vector generate_multisig_derivations(const account_keys &keys, const std::vector &derivations); + crypto::secret_key calculate_multisig_signer_key(const std::vector& derivations); + /** + * @brief calculate_multisig_keys. Calculates secret multisig keys from others' participants ones as follows: mi = H(Mi) + * @param derivations - others' participants public multisig keys. + * @return vector of current wallet's multisig secret keys + */ + std::vector calculate_multisig_keys(const std::vector& derivations); crypto::secret_key generate_multisig_view_secret_key(const crypto::secret_key &skey, const std::vector &skeys); - crypto::public_key generate_multisig_N1_N_spend_public_key(const std::vector &pkeys); + /** + * @brief generate_multisig_M_N_spend_public_key calculates multisig wallet's spend public key by summing all of public multisig keys + * @param pkeys unique public multisig keys + * @return multisig wallet's spend public key + */ + crypto::public_key generate_multisig_M_N_spend_public_key(const std::vector &pkeys); bool generate_multisig_key_image(const account_keys &keys, size_t multisig_key_index, const crypto::public_key& out_key, crypto::key_image& ki); void generate_multisig_LR(const crypto::public_key pkey, const crypto::secret_key &k, crypto::public_key &L, crypto::public_key &R); bool generate_multisig_composite_key_image(const account_keys &keys, const std::unordered_map& subaddresses, const crypto::public_key& out_key, const crypto::public_key &tx_public_key, const std::vector& additional_tx_public_keys, size_t real_output_index, const std::vector &pkis, crypto::key_image &ki); + uint32_t multisig_rounds_required(uint32_t participants, uint32_t threshold); } -- cgit v1.2.3