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Merge pull request #1540 

79b4e1f9 Cold signing: make sure short payment id isnt encrypted twice (Jaquee)
This commit is contained in:
Riccardo Spagni 2017-01-13 14:34:26 -05:00
parent 006bb0e957 79b4e1f997
commit e51afeb90f
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GPG Key ID: 55432DF31CCD4FCD
2 changed files with 43 additions and 1 deletions
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43
src/wallet/wallet2.cpp
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@ -2889,6 +2889,24 @@ crypto::hash wallet2::get_payment_id(const pending_tx &ptx) const
}
return payment_id;
}
crypto::hash8 wallet2::get_short_payment_id(const pending_tx &ptx) const
{
crypto::hash8 payment_id8 = null_hash8;
std::vector<tx_extra_field> tx_extra_fields;
if(!parse_tx_extra(ptx.tx.extra, tx_extra_fields))
return payment_id8;
cryptonote::tx_extra_nonce extra_nonce;
if (find_tx_extra_field_by_type(tx_extra_fields, extra_nonce))
{
if(get_encrypted_payment_id_from_tx_extra_nonce(extra_nonce.nonce, payment_id8))
{
decrypt_payment_id(payment_id8, ptx.dests[0].addr.m_view_public_key, ptx.tx_key);
}
}
return payment_id8;
}
//----------------------------------------------------------------------------------------------------
// take a pending tx and actually send it to the daemon
void wallet2::commit_tx(pending_tx& ptx)
@ -2959,7 +2977,30 @@ bool wallet2::save_tx(const std::vector<pending_tx>& ptx_vector, const std::stri
LOG_PRINT_L0("saving " << ptx_vector.size() << " transactions");
unsigned_tx_set txs;
for (auto &tx: ptx_vector)
txs.txes.push_back(tx.construction_data);
{
tx_construction_data construction_data = tx.construction_data;
// Short payment id is encrypted with tx_key.
// Since sign_tx() generates new tx_keys and encrypts the payment id, we need to save the decrypted payment ID
// Get decrypted payment id from pending_tx
crypto::hash8 payment_id = get_short_payment_id(tx);
if (payment_id != null_hash8)
{
// Remove encrypted
remove_field_from_tx_extra(construction_data.extra, typeid(cryptonote::tx_extra_nonce));
// Add decrypted
std::string extra_nonce;
set_encrypted_payment_id_to_tx_extra_nonce(extra_nonce, payment_id);
if (!add_extra_nonce_to_tx_extra(construction_data.extra, extra_nonce))
{
LOG_ERROR("Failed to add decrypted payment id to tx extra");
return false;
}
LOG_PRINT_L1("Decrypted payment ID: " << payment_id);
}
// Save tx construction_data to unsigned_tx_set
txs.txes.push_back(construction_data);
}
txs.transfers = m_transfers;
// save as binary
std::ostringstream oss;

1
src/wallet/wallet2.h
View File

@ -579,6 +579,7 @@ namespace tools
void check_genesis(const crypto::hash& genesis_hash) const; //throws
bool generate_chacha8_key_from_secret_keys(crypto::chacha8_key &key) const;
crypto::hash get_payment_id(const pending_tx &ptx) const;
crypto::hash8 get_short_payment_id(const pending_tx &ptx) const;
void check_acc_out_precomp(const crypto::public_key &spend_public_key, const cryptonote::tx_out &o, const crypto::key_derivation &derivation, size_t i, bool &received, uint64_t &money_transfered, bool &error) const;
void parse_block_round(const cryptonote::blobdata &blob, cryptonote::block &bl, crypto::hash &bl_id, bool &error) const;
uint64_t get_upper_tranaction_size_limit();