omemo_status domain_transfer_operation::decrypt_memo_data( const fc::ecc::private_key& receiver_key ) const
{ try {
FC_ASSERT( memo.valid() );
// ilog( "receiver_key: ${r}", ("r",receiver_key) );
auto secret = receiver_key.get_shared_secret( memo->one_time_key );
// ilog( "secret: ${secret}", ("secret",secret) );
extended_private_key ext_receiver_key(receiver_key);
// ilog( "ext_receiver_key: ${key}",("key",ext_receiver_key) );
fc::ecc::private_key secret_private_key = ext_receiver_key.child( fc::sha256::hash(secret),
extended_private_key::public_derivation );
// ilog( "secret_private_key: ${k}", ("k",secret_private_key) );
auto secret_public_key = secret_private_key.get_public_key();
// ilog( "secret_public_key: ${k}", ("k",secret_public_key) );
if( owner != address(secret_public_key) )
return omemo_status();
// ilog( "owner: ${o} == ${address}", ("o",owner)("address",address(secret_public_key)) );
auto memo = decrypt_memo_data( secret );
bool has_valid_signature = false;
if( memo.memo_flags == from_memo )
{
auto check_secret = secret_private_key.get_shared_secret( memo.from );
has_valid_signature = check_secret._hash[0] == memo.from_signature;
}
else
{
has_valid_signature = true;
}
return memo_status( memo, has_valid_signature, secret_private_key );
} FC_RETHROW_EXCEPTIONS( warn, "" ) }
omemo_status withdraw_with_signature::decrypt_memo_data( const fc::ecc::private_key& receiver_key, bool ignore_owner )const
{ try {
try {
FC_ASSERT( memo.valid() );
auto secret = receiver_key.get_shared_secret( memo->one_time_key );
extended_private_key ext_receiver_key(receiver_key);
fc::ecc::private_key secret_private_key = ext_receiver_key.child( fc::sha256::hash(secret),
extended_private_key::public_derivation );
auto secret_public_key = secret_private_key.get_public_key();
if( !ignore_owner && owner != address( secret_public_key ) )
return omemo_status();
auto memo = decrypt_memo_data( secret );
bool has_valid_signature = false;
if( memo.memo_flags == from_memo && !( memo.from == public_key_type() && memo.from_signature == 0 ) )
{
auto check_secret = secret_private_key.get_shared_secret( memo.from );
has_valid_signature = check_secret._hash[0] == memo.from_signature;
}
else
{
has_valid_signature = true;
}
return memo_status( memo, has_valid_signature, secret_private_key );
}
catch ( const fc::aes_exception& e )
{
return omemo_status();
}
} FC_CAPTURE_AND_RETHROW( (ignore_owner) ) }
