From 9518d1cc65927188a50e7a0345040fb45ee23fab Mon Sep 17 00:00:00 2001
From: Masao Hidemitsu <shirakox@protonmail.ch>
Date: Sat, 19 May 2018 02:40:07 +0900
Subject: [PATCH] Added Argon2 as supported algo

---
 README.md             | 16 ++++++++++++++--
 lib/algoProperties.js | 38 ++++++++++++++++++++++++++++++++++++++
 2 files changed, 52 insertions(+), 2 deletions(-)

diff --git a/README.md b/README.md
index 078b90f8..1ea9442b 100644
--- a/README.md
+++ b/README.md
@@ -88,8 +88,8 @@ npm update
 
 Create the configuration for your coin:
 
-Possible options for `algorithm`: *sha256, scrypt, scrypt-jane, scrypt-n, quark, x11, keccak, blake,
-skein, groestl, fugue, shavite3, hefty1, qubit, or sha1*.
+Possible options for `algorithm`: *argon2d, argon2i, argon2id, sha256, scrypt, scrypt-jane, scrypt-n, quark, x11, 
+keccak, blake, skein, groestl, fugue, shavite3, hefty1, qubit, or sha1*.
 
 ```javascript
 var myCoin = {
@@ -157,6 +157,18 @@ var myCoin = {
 };
 ```
 
+If you are using the `argon2d`, `argon2i`, or `argon2id` algorithm there are additional configurations:
+```javascript
+var myCoin = {
+    "name": "Unitus",
+    "symbol": "UIS",
+    "algorithm": "argon2d",
+    "tValue": 1, //optional - defaults to 1
+    "mValue": 4096, //optional - defaults to 4096
+    "pValue": 1 //optional - defaults to 1
+};
+```
+
 
 Create and start new pool with configuration options and authentication function
 
diff --git a/lib/algoProperties.js b/lib/algoProperties.js
index 7725ee62..b6f4b4d2 100644
--- a/lib/algoProperties.js
+++ b/lib/algoProperties.js
@@ -5,6 +5,44 @@ var util = require('./util.js');
 var diff1 = global.diff1 = 0x00000000ffff0000000000000000000000000000000000000000000000000000;
 
 var algos = module.exports = global.algos = {
+    'argon2d': {
+        //Uncomment diff if you want to use hardcoded truncated diff
+        //diff: '0000ffff00000000000000000000000000000000000000000000000000000000',
+        multiplier: Math.pow(2, 16),
+        hash: function(coinConfig){
+            var tValue = coinConfig.tValue || 1;
+            var mValue = coinConfig.mValue || 4096;
+            var pValue = coinConfig.pValue || 1;
+            return function(data){
+                return multiHashing.argon2d(data,tValue,mValue,pValue);
+            }
+        }
+    },
+    'argon2i': {
+        //Uncomment diff if you want to use hardcoded truncated diff
+        //diff: '0000ffff00000000000000000000000000000000000000000000000000000000',
+        multiplier: Math.pow(2, 16),
+        hash: function(coinConfig){
+            var tValue = coinConfig.tValue || 1;
+            var mValue = coinConfig.mValue || 4096;
+            var pValue = coinConfig.pValue || 1;
+            return function(data){
+                return multiHashing.argon2i(data,tValue,mValue,pValue);
+            }
+        }
+    },
+    'argon2id': {
+        //Uncomment diff if you want to use hardcoded truncated diff
+        //diff: '0000ffff00000000000000000000000000000000000000000000000000000000',
+        hash: function(coinConfig){
+            var tValue = coinConfig.tValue || 1;
+            var mValue = coinConfig.mValue || 4096;
+            var pValue = coinConfig.pValue || 1;
+            return function(data){
+                return multiHashing.argon2id(data,tValue,mValue,pValue);
+            }
+        }
+    },
     sha256: {
         //Uncomment diff if you want to use hardcoded truncated diff
         //diff: '00000000ffff0000000000000000000000000000000000000000000000000000',