wallet: new {ex,im}port_key_images commands and RPC calls

They are used to export a signed set of key images from a wallet
with a private spend key, so an auditor with the matching view key
may see which of those are spent, and which are not.

1 files changed, 65 insertions, 0 deletions

diff --git a/src/wallet/wallet_rpc_server_commands_defs.h b/src/wallet/wallet_rpc_server_commands_defs.h
index f4eefcd1a..d7f01d9ee 100644
--- a/src/wallet/wallet_rpc_server_commands_defs.h
+++ b/src/wallet/wallet_rpc_server_commands_defs.h
@@ -601,5 +601,70 @@ namespace wallet_rpc
     };
   };
 
+  struct COMMAND_RPC_EXPORT_KEY_IMAGES
+  {
+    struct request
+    {
+      BEGIN_KV_SERIALIZE_MAP()
+      END_KV_SERIALIZE_MAP()
+    };
+
+    struct signed_key_image
+    {
+      std::string key_image;
+      std::string signature;
+
+      BEGIN_KV_SERIALIZE_MAP()
+        KV_SERIALIZE(key_image);
+        KV_SERIALIZE(signature);
+      END_KV_SERIALIZE_MAP()
+    };
+
+    struct response
+    {
+      std::vector<signed_key_image> signed_key_images;
+
+      BEGIN_KV_SERIALIZE_MAP()
+        KV_SERIALIZE(signed_key_images);
+      END_KV_SERIALIZE_MAP()
+    };
+  };
+
+  struct COMMAND_RPC_IMPORT_KEY_IMAGES
+  {
+    struct signed_key_image
+    {
+      std::string key_image;
+      std::string signature;
+
+      BEGIN_KV_SERIALIZE_MAP()
+        KV_SERIALIZE(key_image);
+        KV_SERIALIZE(signature);
+      END_KV_SERIALIZE_MAP()
+    };
+
+    struct request
+    {
+      std::vector<signed_key_image> signed_key_images;
+
+      BEGIN_KV_SERIALIZE_MAP()
+        KV_SERIALIZE(signed_key_images);
+      END_KV_SERIALIZE_MAP()
+    };
+
+    struct response
+    {
+      uint64_t height;
+      uint64_t spent;
+      uint64_t unspent;
+
+      BEGIN_KV_SERIALIZE_MAP()
+        KV_SERIALIZE(height)
+        KV_SERIALIZE(spent)
+        KV_SERIALIZE(unspent)
+      END_KV_SERIALIZE_MAP()
+    };
+  };
+
 }
 }