Merge pull request #71 from ExodusMovement/guten/derivation_to_scalar

Added derivation_to_scalar

monero_utils/MyMoneroCoreBridge.js

@@ -412,6 +412,21 @@ class MyMoneroCoreBridge
 		}
 		return ret.retVal;		
 	}
+	derivation_to_scalar(derivation, output_index)
+	{
+		const args =
+		{
+			derivation: derivation,
+			output_index: output_index,
+		};
+		const args_str = JSON.stringify(args);
+		const ret_string = this.Module.derivation_to_scalar(args_str);
+		const ret = JSON.parse(ret_string);
+		if (typeof ret.err_msg !== 'undefined' && ret.err_msg) {
+			return { err_msg: ret.err_msg };
+		}
+		return ret.retVal;
+	}
 	decodeRct(rv, sk, i)
 	{
 		const ecdhInfo = []; // should obvs be plural but just keeping exact names in-tact

src/index.cpp

@@ -64,6 +64,7 @@ EMSCRIPTEN_BINDINGS(my_module)
     emscripten::function("derive_public_key", &serial_bridge::derive_public_key);
     emscripten::function("derive_subaddress_public_key", &serial_bridge::derive_subaddress_public_key);
     emscripten::function("decodeRct", &serial_bridge::decodeRct);
+    emscripten::function("derivation_to_scalar", &serial_bridge::derivation_to_scalar);
     //
 }
 extern "C"

tests/MyMoneroCoreCpp.node.js

@@ -168,6 +168,13 @@ function tests(Module)
 		console.timeEnd("derive_subaddress_public_key")
 		console.log("derive_subaddress_public_key ret", ret_string)
 	}
+  {
+		console.time("derivation_to_scalar")
+		const args_str = '{"derivation":"7a4c13a037d4bd2a7dd99a8c24669e9e04ca4e8a90e5b6703e88e87ad51c1849","output_index":1}'
+		const ret_string = Module.derivation_to_scalar(args_str)
+		console.timeEnd("derivation_to_scalar")
+		console.log("derivation_to_scalar ret", ret_string)
+  }
 	{
 		console.time("decodeRct")
 		const args_str = '{"i":"1","sk":"9b1529acb638f497d05677d7505d354b4ba6bc95484008f6362f93160ef3e503","rv":{"type":"1","ecdhInfo":[{"mask":"3ad9d0b3398691b94558e0f750e07e5e0d7d12411cd70b3841159e6c6b10db02","amount":"b3189d8adb5a26568e497eb8e376a7d7d946ebb1daef4c2c87a2c30b65915506"},{"mask":"97b00af8ecba3cb71b9660cc9e1ac110abd21a4c5e50a2c125f964caa96bef0c","amount":"60269d8adb5a26568e497eb8e376a7d7d946ebb1daef4c2c87a2c30b65915506"},{"mask":"db67f5066d9455db404aeaf435ad948bc9f27344bc743e3a32583a9e6695cb08","amount":"b3189d8adb5a26568e497eb8e376a7d7d946ebb1daef4c2c87a2c30b65915506"}],"outPk":[{"mask":"9adc531a9c79a49a4257f24e5e5ea49c2fc1fb4eef49e00d5e5aba6cb6963a7d"},{"mask":"89f40499d6786a4027a24d6674d0940146fd12d8bc6007d338f19f05040e7a41"},{"mask":"f413d28bd5ffdc020528bcb2c19919d7484fbc9c3dd30de34ecff5b8a904e7f6"}]}}'