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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
No known key found for this signature in database
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
View file

@ -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;

21
src/wallet/wallet2.cpp
View file

@ -6224,7 +6224,8 @@ bool wallet2::light_wallet_parse_rct_str(const std::string& rct_string, const cr
if (decrypt) {
// Decrypt the mask
crypto::key_derivation derivation;
generate_key_derivation(tx_pub_key, get_account().get_keys().m_view_secret_key, derivation);
bool r = generate_key_derivation(tx_pub_key, get_account().get_keys().m_view_secret_key, derivation);
THROW_WALLET_EXCEPTION_IF(!r, error::wallet_internal_error, "Failed to generate key derivation");
crypto::secret_key scalar;
crypto::derivation_to_scalar(derivation, internal_output_index, scalar);
sc_sub(decrypted_mask.bytes,encrypted_mask.bytes,rct::hash_to_scalar(rct::sk2rct(scalar)).bytes);
@ -7414,12 +7415,14 @@ void wallet2::check_tx_key_helper(const crypto::hash &txid, const crypto::key_de
continue;
crypto::public_key derived_out_key;
derive_public_key(derivation, n, address.m_spend_public_key, derived_out_key);
bool r = derive_public_key(derivation, n, address.m_spend_public_key, derived_out_key);
THROW_WALLET_EXCEPTION_IF(!r, error::wallet_internal_error, "Failed to derive public key");
bool found = out_key->key == derived_out_key;
crypto::key_derivation found_derivation = derivation;
if (!found && !additional_derivations.empty())
{
derive_public_key(additional_derivations[n], n, address.m_spend_public_key, derived_out_key);
r = derive_public_key(additional_derivations[n], n, address.m_spend_public_key, derived_out_key);
THROW_WALLET_EXCEPTION_IF(!r, error::wallet_internal_error, "Failed to derive public key");
found = out_key->key == derived_out_key;
found_derivation = additional_derivations[n];
}
@ -7884,13 +7887,15 @@ crypto::public_key wallet2::get_tx_pub_key_from_received_outs(const tools::walle
for (size_t i = 0; i < additional_tx_pub_keys.size(); ++i)
{
additional_derivations.push_back({});
generate_key_derivation(additional_tx_pub_keys[i], keys.m_view_secret_key, additional_derivations.back());
bool r = generate_key_derivation(additional_tx_pub_keys[i], keys.m_view_secret_key, additional_derivations.back());
THROW_WALLET_EXCEPTION_IF(!r, error::wallet_internal_error, "Failed to generate key derivation");
}
while (find_tx_extra_field_by_type(tx_extra_fields, pub_key_field, pk_index++)) {
const crypto::public_key tx_pub_key = pub_key_field.pub_key;
crypto::key_derivation derivation;
generate_key_derivation(tx_pub_key, keys.m_view_secret_key, derivation);
bool r = generate_key_derivation(tx_pub_key, keys.m_view_secret_key, derivation);
THROW_WALLET_EXCEPTION_IF(!r, error::wallet_internal_error, "Failed to generate key derivation");
for (size_t i = 0; i < td.m_tx.vout.size(); ++i)
{
@ -8177,13 +8182,15 @@ uint64_t wallet2::import_key_images(const std::vector<std::pair<crypto::key_imag
const cryptonote::account_keys& keys = m_account.get_keys();
const crypto::public_key tx_pub_key = get_tx_pub_key_from_extra(spent_tx);
crypto::key_derivation derivation;
generate_key_derivation(tx_pub_key, keys.m_view_secret_key, derivation);
bool r = generate_key_derivation(tx_pub_key, keys.m_view_secret_key, derivation);
THROW_WALLET_EXCEPTION_IF(!r, error::wallet_internal_error, "Failed to generate key derivation");
const std::vector<crypto::public_key> additional_tx_pub_keys = get_additional_tx_pub_keys_from_extra(spent_tx);
std::vector<crypto::key_derivation> additional_derivations;
for (size_t i = 0; i < additional_tx_pub_keys.size(); ++i)
{
additional_derivations.push_back({});
generate_key_derivation(additional_tx_pub_keys[i], keys.m_view_secret_key, additional_derivations.back());
r = generate_key_derivation(additional_tx_pub_keys[i], keys.m_view_secret_key, additional_derivations.back());
THROW_WALLET_EXCEPTION_IF(!r, error::wallet_internal_error, "Failed to generate key derivation");
}
size_t output_index = 0;
for (const cryptonote::tx_out& out : spent_tx.vout)