enabled hash check with difficulty

lib/index.js

@@ -114,6 +114,10 @@ Hash.slow = (buffer, variant) => {
   return addon.getSlowHash(buffer, variant);
 }
 
+Hash.check = (buffer, difficulty) => {
+  return addon.checkHash(buffer, difficulty);
+}
+
 module.exports.Scalar = Scalar;
 module.exports.Crypto = Crypto;
 module.exports.Key = Key;

native/src/hash.rs

@@ -1,6 +1,7 @@
 use neon::prelude::*;
 use cryptonote_raw_crypto::{hash::Hash};
 use std::fmt::Write;
+use util::*;
 
 pub fn get_fast_hash(mut cx: FunctionContext) -> JsResult<JsString> {
     let mut b: Handle<JsBuffer> = cx.argument(0)?;
@@ -30,3 +31,9 @@ pub fn get_slow_hash(mut cx: FunctionContext) -> JsResult<JsString> {
     }
     Ok(cx.string(s))
 }
+
+pub fn check_with_difficulty(mut cx: FunctionContext) -> JsResult<JsBoolean> {
+    let hash = get_hash(&mut cx, 0);
+    let difficulty = cx.argument::<JsNumber>(1)?.value() as u64;
+    Ok(cx.boolean(Hash::check_with_difficulty(&hash, difficulty)))
+}

native/src/lib.rs

@@ -117,6 +117,7 @@ register_module!(mut cx, {
     cx.export_class::<JsDifficulty>("Difficulty")?;
     cx.export_function("getFastHash", get_fast_hash)?;
     cx.export_function("getSlowHash", get_slow_hash)?;
+    cx.export_function("checkHash", check_with_difficulty)?;
     cx.export_function("isScalar", is_scalar)?;
     cx.export_function("setupRandom", init_random)?;
     cx.export_function("randomScalar", random_scalar)?;

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@vigcoin/neon",
-  "version": "0.2.2",
+  "version": "0.2.3",
   "description": "",
   "main": "lib/index.js",
   "author": "calidion <[email protected]>",

test/hash.js

@@ -38,4 +38,11 @@ describe("Test Hash", () => {
       assert(expected.equals(Buffer.from(Hash.slow(plain, 0), 'hex')));
     }
   });
+
+  it("should test check hash", function () {
+    assert(Hash.check(Buffer.from([
+      0, 223, 74, 253, 65, 221, 188, 172, 253, 50, 122, 246, 173, 212, 162, 103, 13, 174, 254,
+      199, 175, 49, 254, 177, 181, 91, 56, 9, 98, 1, 0, 0
+    ]), 10343869));
+  });
 });