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multisig key exchange update and refactor

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This commit is contained in:
koe 2021-08-02 23:27:43 -05:00
parent b58a9fb12e
commit e08abaa43f
30 changed files with 2224 additions and 952 deletions
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21
src/cryptonote_basic/cryptonote_format_utils.cpp
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@ -306,7 +306,26 @@ namespace cryptonote
{
// derive secret key with subaddress - step 1: original CN derivation
crypto::secret_key scalar_step1;
hwdev.derive_secret_key(recv_derivation, real_output_index, ack.m_spend_secret_key, scalar_step1); // computes Hs(a*R || idx) + b
crypto::secret_key spend_skey = crypto::null_skey;
if (ack.m_multisig_keys.empty())
{
// if not multisig, use normal spend skey
spend_skey = ack.m_spend_secret_key;
}
else
{
// if multisig, use sum of multisig privkeys (local account's share of aggregate spend key)
for (const auto &multisig_key : ack.m_multisig_keys)
{
sc_add((unsigned char*)spend_skey.data,
(const unsigned char*)multisig_key.data,
(const unsigned char*)spend_skey.data);
}
}
// computes Hs(a*R || idx) + b
hwdev.derive_secret_key(recv_derivation, real_output_index, spend_skey, scalar_step1);
// step 2: add Hs(a || index_major || index_minor)
crypto::secret_key subaddr_sk;