1 files changed, 68 insertions, 0 deletions
diff --git a/src/cryptonote_basic/asset_wire.h b/src/cryptonote_basic/asset_wire.h
new file mode 100644
index 000000000..e5f63a01b
--- /dev/null
+++ b/src/cryptonote_basic/asset_wire.h
@@ -0,0 +1,68 @@
+#pragma once
+
+#include <string>
+#include <vector>
+
+#include <boost/optional.hpp>
+
+#include "asset_confidential.h"
+
+namespace cryptonote
+{
+namespace assets
+{
+  constexpr uint8_t ASSET_TRANSACTION_WIRE_VERSION = 1;
+  constexpr size_t MAX_ASSET_BALANCE_GROUPS = 8;
+  constexpr size_t MAX_ASSET_TOTAL_INPUTS = 64;
+  constexpr size_t MAX_ASSET_TOTAL_DESTINATIONS = 64;
+  constexpr size_t MAX_ASSET_OWNERSHIP_PROOFS = 64;
+  constexpr size_t MAX_ASSET_RANGE_PROOFS = 16;
+  constexpr size_t MAX_ASSET_WIRE_BYTES = 256 * 1024;
+
+  struct confidential_asset_output
+  {
+    rct::key destination{};
+    rct::key commitment{};
+  };
+
+  // Inactive canonical payload prototype. The carrier hash is computed from
+  // the native transaction prefix with this envelope omitted; activation code
+  // must enforce that procedure to avoid a self-referential hash.
+  struct asset_transaction_payload
+  {
+    uint8_t version = ASSET_TRANSACTION_WIRE_VERSION;
+    network_type network = UNDEFINED;
+    crypto::hash carrier_prefix_hash{};
+    boost::optional<issuance_payload> issuance;
+    std::vector<confidential_asset_balance> balances;
+    std::vector<std::vector<rct::key>> output_destinations;
+    std::vector<asset_ownership_proof> ownership_proofs;
+  };
+
+  bool validate_asset_transaction_payload_shape(
+    const asset_transaction_payload& payload,
+    std::string* error = nullptr);
+  bool encode_asset_transaction_payload(
+    const asset_transaction_payload& payload,
+    std::vector<uint8_t>& encoded,
+    std::string* error = nullptr);
+  bool decode_asset_transaction_payload(
+    const std::vector<uint8_t>& encoded,
+    asset_transaction_payload& payload,
+    std::string* error = nullptr);
+  bool verify_asset_transaction_payload(
+    const asset_transaction_payload& payload,
+    const std::set<crypto::hash>& known_assets,
+    network_type expected_network,
+    const crypto::hash& expected_carrier_prefix_hash,
+    std::string* error = nullptr);
+  bool derive_asset_output_id(
+    network_type network,
+    const crypto::hash& carrier_prefix_hash,
+    const crypto::hash& asset_id,
+    uint32_t output_index,
+    const confidential_asset_output& output,
+    crypto::hash& output_id,
+    std::string* error = nullptr);
+}
+}