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check return value for generate_key_derivation and derive_public_key

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moneromooo-monero 2017-12-12 10:58:27 +00:00
parent a4240d9ffc
commit 2305bf260d
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GPG key ID: 686F07454D6CEFC3
2 changed files with 22 additions and 11 deletions
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12
src/cryptonote_basic/cryptonote_format_utils.cpp
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@ -630,17 +630,21 @@ namespace cryptonote
bool is_out_to_acc(const account_keys& acc, const txout_to_key& out_key, const crypto::public_key& tx_pub_key, const std::vector<crypto::public_key>& additional_tx_pub_keys, size_t output_index)
{
crypto::key_derivation derivation;
generate_key_derivation(tx_pub_key, acc.m_view_secret_key, derivation);
bool r = generate_key_derivation(tx_pub_key, acc.m_view_secret_key, derivation);
CHECK_AND_ASSERT_MES(r, false, "Failed to generate key derivation");
crypto::public_key pk;
derive_public_key(derivation, output_index, acc.m_account_address.m_spend_public_key, pk);
r = derive_public_key(derivation, output_index, acc.m_account_address.m_spend_public_key, pk);
CHECK_AND_ASSERT_MES(r, false, "Failed to derive public key");
if (pk == out_key.key)
return true;
// try additional tx pubkeys if available
if (!additional_tx_pub_keys.empty())
{
CHECK_AND_ASSERT_MES(output_index < additional_tx_pub_keys.size(), false, "wrong number of additional tx pubkeys");
generate_key_derivation(additional_tx_pub_keys[output_index], acc.m_view_secret_key, derivation);
derive_public_key(derivation, output_index, acc.m_account_address.m_spend_public_key, pk);
r = generate_key_derivation(additional_tx_pub_keys[output_index], acc.m_view_secret_key, derivation);
CHECK_AND_ASSERT_MES(r, false, "Failed to generate key derivation");
r = derive_public_key(derivation, output_index, acc.m_account_address.m_spend_public_key, pk);
CHECK_AND_ASSERT_MES(r, false, "Failed to derive public key");
return pk == out_key.key;
}
return false;