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encrypted payment ids are now 64 bit, instead of 256 bit

Browse source 
Pros:
 - smaller on the blockchain
 - shorter integrated addresses

Cons:
 - less sparseness
 - less ability to embed actual information

The boolean argument to encrypt payment ids is now gone from the
RPC calls, since the decision is made based on the length of the
payment id passed.
This commit is contained in:
moneromooo-monero 2015-08-09 10:09:39 +01:00
parent e40cfc4e29
commit a2d7a5fb49
No known key found for this signature in database
GPG key ID: 686F07454D6CEFC3
15 changed files with 169 additions and 89 deletions
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49
src/wallet/wallet2.cpp
View file

@ -237,20 +237,24 @@ void wallet2::process_new_transaction(const cryptonote::transaction& tx, uint64_
crypto::hash payment_id = null_hash;
if (find_tx_extra_field_by_type(tx_extra_fields, extra_nonce))
{
bool encrypted;
if(get_payment_id_from_tx_extra_nonce(extra_nonce.nonce, payment_id, encrypted) && encrypted)
crypto::hash8 payment_id8 = null_hash8;
if(get_encrypted_payment_id_from_tx_extra_nonce(extra_nonce.nonce, payment_id8))
{
// We got a payment ID to go with this tx
LOG_PRINT_L2("Found encrypted payment ID: " << payment_id);
LOG_PRINT_L2("Found encrypted payment ID: " << payment_id8);
if (tx_pub_key != null_pkey)
{
if (!decrypt_payment_id(payment_id, tx_pub_key, m_account.get_keys().m_view_secret_key))
if (!decrypt_payment_id(payment_id8, tx_pub_key, m_account.get_keys().m_view_secret_key))
{
LOG_PRINT_L0("Failed to decrypt payment ID: " << payment_id);
LOG_PRINT_L0("Failed to decrypt payment ID: " << payment_id8);
}
else
{
LOG_PRINT_L2("Decrypted payment ID: " << payment_id);
LOG_PRINT_L2("Decrypted payment ID: " << payment_id8);
// put the 64 bit decrypted payment id in the first 8 bytes
memcpy(payment_id.data, payment_id8.data, 8);
// rest is already 0, but guard against code changes above
memset(payment_id.data + 8, 0, 24);
}
}
else
@ -258,6 +262,10 @@ void wallet2::process_new_transaction(const cryptonote::transaction& tx, uint64_
LOG_PRINT_L1("No public key found in tx, unable to decrypt payment id");
}
}
else if (get_payment_id_from_tx_extra_nonce(extra_nonce.nonce, payment_id))
{
LOG_PRINT_L2("Found unencrypted payment ID: " << payment_id);
}
}
uint64_t received = (tx_money_spent_in_ins < tx_money_got_in_outs) ? tx_money_got_in_outs - tx_money_spent_in_ins : 0;
if (0 < received)
@ -783,7 +791,7 @@ bool wallet2::wallet_valid_path_format(const std::string& file_path)
return !file_path.empty();
}
//----------------------------------------------------------------------------------------------------
bool wallet2::parse_payment_id(const std::string& payment_id_str, crypto::hash& payment_id)
bool wallet2::parse_long_payment_id(const std::string& payment_id_str, crypto::hash& payment_id)
{
cryptonote::blobdata payment_id_data;
if(!epee::string_tools::parse_hexstr_to_binbuff(payment_id_str, payment_id_data))
@ -796,6 +804,33 @@ bool wallet2::parse_payment_id(const std::string& payment_id_str, crypto::hash&
return true;
}
//----------------------------------------------------------------------------------------------------
bool wallet2::parse_short_payment_id(const std::string& payment_id_str, crypto::hash8& payment_id)
{
cryptonote::blobdata payment_id_data;
if(!epee::string_tools::parse_hexstr_to_binbuff(payment_id_str, payment_id_data))
return false;
if(sizeof(crypto::hash8) != payment_id_data.size())
return false;
payment_id = *reinterpret_cast<const crypto::hash8*>(payment_id_data.data());
return true;
}
//----------------------------------------------------------------------------------------------------
bool wallet2::parse_payment_id(const std::string& payment_id_str, crypto::hash& payment_id)
{
if (parse_long_payment_id(payment_id_str, payment_id))
return true;
crypto::hash8 payment_id8;
if (parse_short_payment_id(payment_id_str, payment_id8))
{
memcpy(payment_id.data, payment_id8.data, 8);
memset(payment_id.data + 8, 0, 24);
return true;
}
return false;
}
//----------------------------------------------------------------------------------------------------
bool wallet2::prepare_file_names(const std::string& file_path)
{
do_prepare_file_names(file_path, m_keys_file, m_wallet_file);