From 851850ef554192f36172b1ae7ee8220873669be3 Mon Sep 17 00:00:00 2001
From: Kevin Froman <beardog@mailbox.org>
Date: Wed, 7 Oct 2020 22:58:00 +0000
Subject: [PATCH] added modified jspow to repo

---
 index.html         |  2 +-
 jspow/.gitignore   |  1 +
 jspow/README.md    |  3 ++
 jspow/index.js     | 83 ++++++++++++++++++++++++++++++++++++++++++++++
 jspow/package.json | 15 +++++++++
 onionr-jspow       |  1 -
 6 files changed, 103 insertions(+), 2 deletions(-)
 create mode 100644 jspow/.gitignore
 create mode 100644 jspow/README.md
 create mode 100644 jspow/index.js
 create mode 100644 jspow/package.json
 delete mode 160000 onionr-jspow

diff --git a/index.html b/index.html
index 2a9bdce..ba7497d 100644
--- a/index.html
+++ b/index.html
@@ -16,7 +16,7 @@
     <script src="marked.min.js" defer></script>
     <script src="purify.min.js" defer></script>
     <script src="sha3.js" defer></script>
-    <script src="onionr-jspow/index.js" defer></script>
+    <script src="jspow/index.js" defer></script>
     <script src="onionr-blocks.js" defer></script>
     <script src="hush-hush.js" defer></script>
     <script src="worker-handler.js" defer></script>
diff --git a/jspow/.gitignore b/jspow/.gitignore
new file mode 100644
index 0000000..dbf0821
--- /dev/null
+++ b/jspow/.gitignore
@@ -0,0 +1 @@
+node_modules/*
\ No newline at end of file
diff --git a/jspow/README.md b/jspow/README.md
new file mode 100644
index 0000000..c87c8c8
--- /dev/null
+++ b/jspow/README.md
@@ -0,0 +1,3 @@
+# OnionrPOW-js
+
+lazy implementation of onionr proof of work
\ No newline at end of file
diff --git a/jspow/index.js b/jspow/index.js
new file mode 100644
index 0000000..6dc790e
--- /dev/null
+++ b/jspow/index.js
@@ -0,0 +1,83 @@
+/*
+Copyright 2020 Kevin Froman
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+
+// version = 0.0.0
+
+class Block {
+    constructor(meta, sig, signer, time, pow=0, c=0) {
+      this.meta = meta
+      this.sig = sig
+      this.signer = signer
+      this.time = time
+      this.c = c
+    }
+  }
+
+
+let doHash = function(data){
+    const shaObj = new jsSHA("SHA3-256", "UINT8ARRAY", { encoding: "UTF8" });
+    shaObj.update(data)
+    return shaObj.getHash("UINT8ARRAY");
+}
+let doHashHex = function(data){
+    const shaObj = new jsSHA("SHA3-256", "UINT8ARRAY", { encoding: "UTF8" });
+    shaObj.update(data)
+    return shaObj.getHash("HEX");
+}
+
+function doPow(metadata, data, difficulty){
+    // Inefficient single threaded proof of work. Accepting better implementations!
+    var encoder = new TextEncoder("utf-8")
+    if (typeof data == 'string'){
+        data = encoder.encode(data)
+    }
+
+    metadata['c'] = 0
+    metadata['n'] = Math.floor(Math.random() * Math.floor(10000)) + Math.floor(Math.random() * Math.floor(10000))
+
+    while (true){
+        var difficultyCounter = 0
+        let metadataString = encoder.encode(JSON.stringify(metadata) + "\n")
+        let arr = new Uint8Array(metadataString.length + data.length)
+        arr.set(metadataString)
+        arr.set(data, metadataString.length)
+        hash = doHash(arr)
+
+        for (var i = 0; i < hash.length; i++){
+            if (hash[i] == 0){
+                difficultyCounter += 1
+                if (difficultyCounter === difficulty){
+                    return arr
+                }
+            }
+            else{
+                break
+            }
+        }
+        metadata['c'] += 1
+    }
+
+}
+
+function unserialize(str, theClass) {
+    var instance = new theClass() // NOTE: if your constructor checks for unpassed arguments, then just pass dummy ones to prevent throwing an error
+    var serializedObject = JSON.parse(str)
+    Object.assign(instance, serializedObject)
+    return instance
+}
+
+
diff --git a/jspow/package.json b/jspow/package.json
new file mode 100644
index 0000000..ed8f3b3
--- /dev/null
+++ b/jspow/package.json
@@ -0,0 +1,15 @@
+{
+  "name": "onionr-jspow",
+  "version": "0.0.0",
+  "description": "Onionr POW JS Implementation",
+  "main": "index.js",
+  "type": "module",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "",
+  "license": "GPL-3.0-or-later",
+  "dependencies": {
+    "sha3": "^2.1.3"
+  }
+}
diff --git a/onionr-jspow b/onionr-jspow
deleted file mode 160000
index abd1872..0000000
--- a/onionr-jspow
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit abd1872a9174c983a75f2ffe102dab72da706b14