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use memwipe on secret k/alpha values

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Reported by UkoeHB_ and sarang
This commit is contained in:
moneromooo-monero
2020-04-08 16:35:28 +00:00
parent ecb8cc9df4
commit 613071f4fa
5 changed files with 27 additions and 10 deletions
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7
src/multisig/multisig.cpp
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@@ -82,6 +82,7 @@ namespace cryptonote
{
rct::key sk = rct::scalarmultKey(rct::pk2rct(k), rct::sk2rct(blinded_skey));
crypto::secret_key msk = get_multisig_blinded_secret_key(rct::rct2sk(sk));
memwipe(&sk, sizeof(sk));
multisig_keys.push_back(msk);
sc_add(spend_skey.bytes, spend_skey.bytes, (const unsigned char*)msk.data);
}
@@ -126,10 +127,10 @@ namespace cryptonote
//-----------------------------------------------------------------
crypto::secret_key generate_multisig_view_secret_key(const crypto::secret_key &skey, const std::vector<crypto::secret_key> &skeys)
{
rct::key view_skey = rct::sk2rct(get_multisig_blinded_secret_key(skey));
crypto::secret_key view_skey = get_multisig_blinded_secret_key(skey);
for (const auto &k: skeys)
sc_add(view_skey.bytes, view_skey.bytes, rct::sk2rct(k).bytes);
return rct::rct2sk(view_skey);
sc_add((unsigned char*)&view_skey, rct::sk2rct(view_skey).bytes, rct::sk2rct(k).bytes);
return view_skey;
}
//-----------------------------------------------------------------
crypto::public_key generate_multisig_M_N_spend_public_key(const std::vector<crypto::public_key> &pkeys)