node v12

2019-12-30 16:20:00 +07:00
parent d0e4411234
commit bf46839a3d
6 changed files with 217 additions and 138 deletions
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
-## Create Genesis Block Proof with Node.js
+## Create Genesis Block Proof of Work with Node.js

-**Tested with Node.js version 8.x.x**
+**Tested with Node.js version 12.x.x**

 ## setup

--- a/genesis.js
+++ b/genesis.js
@@ -21,7 +21,7 @@ var defaults = {
    locktime: 0
 }

-const argv = require('yargs')
+require('yargs')
    .alias('t', 'time')
    .alias('z', 'timestamp')
    .alias('n', 'nonce')
@@ -33,9 +33,10 @@ const argv = require('yargs')
    .alias('h', 'help')
    .help()
    .command('*', 'create genesis block', () => { }, (argv) => {
-        //console.log(argv);
+        // console.log(argv);
+
        var options = Object.assign({}, defaults, argv);
-        //console.log(options);
+        // console.log(options);

        var merkle_root = $.sha256d(createTx(options));
        var genesisblock = createBlock(merkle_root, options);
@@ -48,6 +49,7 @@ const argv = require('yargs')
        console.log("merkle root hash: %s", $.reverseBuffer(merkle_root).toString('hex'));

        PoW(genesisblock, options);
+
        //console.log("genesis block: %s", genesisblock.toString('hex'));
        // console.log($.reverseBuffer(hash_merkle_root).toString('hex'));

@@ -69,9 +71,10 @@ function createOutputScript(options) {

 function createTx(options) {

+
    var input = createInputScript(options);
    var out = createOutputScript(options);
-
+   
    var size = 4    // tx version
        + 1   // number of inputs
        + 32  // hash of previous output
@@ -87,26 +90,32 @@ function createTx(options) {


    var tx = Buffer.alloc(size);
+
    var position = 0;
-    tx.writeIntLE(1, position, true);
-    tx.writeIntLE(1, position += 4, true);
-    tx.write(new Buffer(32).toString('hex'), position += 1, 32, 'hex');
-    tx.writeInt32LE(0xFFFFFFFF, position += 32, true);
-    tx.writeIntLE(input.length, position += 4, true);
+
+    tx.writeInt32LE(1, position);
+    tx.writeInt32LE(1, position += 4);
+    tx.write(Buffer.alloc(32).toString('hex'), position += 1, 32, 'hex');
+    //tx.writeInt32LE(0xFFFFFFFF, position += 32, 4);
+    tx.writeDoubleLE(0xFFFFFFFF, position += 32, 4);
+    tx.writeInt32LE(input.length, position += 4);
    tx.write(input.toString('hex'), position += 1, input.length, "hex");
-    tx.writeInt32LE(0xFFFFFFFF, position += input.length, true);
-    tx.writeIntLE(1, position += 4);
+    //tx.writeInt32LE(0xFFFFFFFF, position += input.length, 4);
+    tx.writeDoubleLE(0xFFFFFFFF, position += input.length);
+    tx.writeInt32LE(1, position += 4);
    tx.write(Buffer.from($.numToBytes(options.value)).toString('hex'), position += 1, 8, 'hex'); // 50 * coin
    tx.writeInt32LE(0x43, position += 8);
    //tx.write(input.toString('hex'), position += 1, input.length, "hex");
    tx.write(out.toString('hex'), position += 1, out.length, "hex");
-    tx.writeIntLE(options.locktime, position += out.length);
+    tx.writeInt32LE(options.locktime, position += out.length);


-    //console.log(tx.toString('hex'));
+    // console.log(tx.toString('hex'));

    return tx;

+
+
 };


@@ -115,8 +124,8 @@ function createBlock(merkleRoot, options) {
    var block = Buffer.alloc(80);
    var position = 0;

-    block.writeIntLE(1, position); //version  
-    block.write(new Buffer(32).toString('hex'), position += 4, 32, 'hex'); //previousblockhash
+    block.writeInt32LE(1, position); //version  
+    block.write(Buffer.alloc(32).toString('hex'), position += 4, 32, 'hex'); //previousblockhash
    block.write(merkleRoot.toString('hex'), position += 32, 32, 'hex');
    block.writeInt32LE(options.time, position += 32);
    //block.write(Buffer.from($.numToBytes(options.time)).toString('hex'), position += 32, 4, 'hex');
@@ -124,7 +133,7 @@ function createBlock(merkleRoot, options) {
    block.writeInt32LE(options.bits, position += 4);
    //block.write(Buffer.from($.numToBytes(options.bits)).toString('hex'), position += 4, 4, 'hex');

-    block.writeIntLE(options.nonce, position += 4);
+    block.writeInt32LE(options.nonce, position += 4);

    return block;

--- a/package-lock.json
+++ b/package-lock.json
@@ -15,9 +15,12 @@
      "integrity": "sha512-x247jIuy60/+FtMRvscqfxtVHQf8AGx2hm9c6btkgC0x/hp9yt+teISNhvF8WlwRkCc5yF2fDECH8SIMe8j+GA=="
    },
    "bindings": {
-      "version": "1.3.0",
-      "resolved": "https://registry.npmjs.org/bindings/-/bindings-1.3.0.tgz",
-      "integrity": "sha512-DpLh5EzMR2kzvX1KIlVC0VkC3iZtHKTgdtZ0a3pglBZdaQFjt5S9g9xd1lE+YvXyfd6mtCeRnrUfOLYiTMlNSw=="
+      "version": "1.5.0",
+      "resolved": "https://registry.npmjs.org/bindings/-/bindings-1.5.0.tgz",
+      "integrity": "sha512-p2q/t/mhvuOj/UeLlV6566GD/guowlr0hHxClI0W9m7MWYkL1F0hLo+0Aexs9HSPCtR1SXQ0TD3MMKrXZajbiQ==",
+      "requires": {
+        "file-uri-to-path": "1.0.0"
+      }
    },
    "bn.js": {
      "version": "4.11.8",
@@ -29,7 +32,7 @@
      "resolved": "https://registry.npmjs.org/bytebuffer/-/bytebuffer-5.0.1.tgz",
      "integrity": "sha1-WC7qSxqHO20CCkjVjfhfC7ps/d0=",
      "requires": {
-        "long": "3.2.0"
+        "long": "~3"
      }
    },
    "camelcase": {
@@ -38,13 +41,13 @@
      "integrity": "sha1-1UVjW+HjPFQmScaRc+Xeas+uNN0="
    },
    "cliui": {
-      "version": "4.0.0",
-      "resolved": "https://registry.npmjs.org/cliui/-/cliui-4.0.0.tgz",
-      "integrity": "sha512-nY3W5Gu2racvdDk//ELReY+dHjb9PlIcVDFXP72nVIhq2Gy3LuVXYwJoPVudwQnv1shtohpgkdCKT2YaKY0CKw==",
+      "version": "4.1.0",
+      "resolved": "https://registry.npmjs.org/cliui/-/cliui-4.1.0.tgz",
+      "integrity": "sha512-4FG+RSG9DL7uEwRUZXZn3SS34DiDPfzP0VOiEwtUWlE+AR2EIg+hSyvrIgUUfhdgR/UkAeW2QHgeP+hWrXs7jQ==",
      "requires": {
-        "string-width": "2.1.1",
-        "strip-ansi": "4.0.0",
-        "wrap-ansi": "2.1.0"
+        "string-width": "^2.1.1",
+        "strip-ansi": "^4.0.0",
+        "wrap-ansi": "^2.0.0"
      }
    },
    "code-point-at": {
@@ -53,13 +56,15 @@
      "integrity": "sha1-DQcLTQQ6W+ozovGkDi7bPZpMz3c="
    },
    "cross-spawn": {
-      "version": "5.1.0",
-      "resolved": "https://registry.npmjs.org/cross-spawn/-/cross-spawn-5.1.0.tgz",
-      "integrity": "sha1-6L0O/uWPz/b4+UUQoKVUu/ojVEk=",
+      "version": "6.0.5",
+      "resolved": "https://registry.npmjs.org/cross-spawn/-/cross-spawn-6.0.5.tgz",
+      "integrity": "sha512-eTVLrBSt7fjbDygz805pMnstIs2VTBNkRm0qxZd+M7A5XDdxVRWO5MxGBXZhjY4cqLYLdtrGqRf8mBPmzwSpWQ==",
      "requires": {
-        "lru-cache": "4.1.2",
-        "shebang-command": "1.2.0",
-        "which": "1.3.0"
+        "nice-try": "^1.0.4",
+        "path-key": "^2.0.1",
+        "semver": "^5.5.0",
+        "shebang-command": "^1.2.0",
+        "which": "^1.2.9"
      }
    },
    "crypto": {
@@ -72,42 +77,58 @@
      "resolved": "https://registry.npmjs.org/decamelize/-/decamelize-1.2.0.tgz",
      "integrity": "sha1-9lNNFRSCabIDUue+4m9QH5oZEpA="
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-    "execa": {
-      "version": "0.7.0",
-      "resolved": "https://registry.npmjs.org/execa/-/execa-0.7.0.tgz",
-      "integrity": "sha1-lEvs00zEHuMqY6n68nrVpl/Fl3c=",
+    "end-of-stream": {
+      "version": "1.4.4",
+      "resolved": "https://registry.npmjs.org/end-of-stream/-/end-of-stream-1.4.4.tgz",
+      "integrity": "sha512-+uw1inIHVPQoaVuHzRyXd21icM+cnt4CzD5rW+NC1wjOUSTOs+Te7FOv7AhN7vS9x/oIyhLP5PR1H+phQAHu5Q==",
      "requires": {
-        "cross-spawn": "5.1.0",
-        "get-stream": "3.0.0",
-        "is-stream": "1.1.0",
-        "npm-run-path": "2.0.2",
-        "p-finally": "1.0.0",
-        "signal-exit": "3.0.2",
-        "strip-eof": "1.0.0"
+        "once": "^1.4.0"
      }
    },
+    "execa": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/execa/-/execa-1.0.0.tgz",
+      "integrity": "sha512-adbxcyWV46qiHyvSp50TKt05tB4tK3HcmF7/nxfAdhnox83seTDbwnaqKO4sXRy7roHAIFqJP/Rw/AuEbX61LA==",
+      "requires": {
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+        "get-stream": "^4.0.0",
+        "is-stream": "^1.1.0",
+        "npm-run-path": "^2.0.0",
+        "p-finally": "^1.0.0",
+        "signal-exit": "^3.0.0",
+        "strip-eof": "^1.0.0"
+      }
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+      "resolved": "https://registry.npmjs.org/file-uri-to-path/-/file-uri-to-path-1.0.0.tgz",
+      "integrity": "sha512-0Zt+s3L7Vf1biwWZ29aARiVYLx7iMGnEUl9x33fbB/j3jR81u/O2LbqK+Bm1CDSNDKVtJ/YjwY7TUd5SkeLQLw=="
+    },
    "find-up": {
      "version": "2.1.0",
      "resolved": "https://registry.npmjs.org/find-up/-/find-up-2.1.0.tgz",
      "integrity": "sha1-RdG35QbHF93UgndaK3eSCjwMV6c=",
      "requires": {
-        "locate-path": "2.0.0"
+        "locate-path": "^2.0.0"
      }
    },
    "get-caller-file": {
-      "version": "1.0.2",
-      "resolved": "https://registry.npmjs.org/get-caller-file/-/get-caller-file-1.0.2.tgz",
-      "integrity": "sha1-9wLmMSfn4jHBYKgMFVSstw1QR+U="
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/get-caller-file/-/get-caller-file-1.0.3.tgz",
+      "integrity": "sha512-3t6rVToeoZfYSGd8YoLFR2DJkiQrIiUrGcjvFX2mDw3bn6k2OtwHN0TNCLbBO+w8qTvimhDkv+LSscbJY1vE6w=="
    },
    "get-stream": {
-      "version": "3.0.0",
-      "resolved": "https://registry.npmjs.org/get-stream/-/get-stream-3.0.0.tgz",
-      "integrity": "sha1-jpQ9E1jcN1VQVOy+LtsFqhdO3hQ="
+      "version": "4.1.0",
+      "resolved": "https://registry.npmjs.org/get-stream/-/get-stream-4.1.0.tgz",
+      "integrity": "sha512-GMat4EJ5161kIy2HevLlr4luNjBgvmj413KaQA7jt4V8B4RDsfpHk7WQ9GVqfYyyx8OS/L66Kox+rJRNklLK7w==",
+      "requires": {
+        "pump": "^3.0.0"
+      }
    },
    "invert-kv": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/invert-kv/-/invert-kv-1.0.0.tgz",
-      "integrity": "sha1-EEqOSqym09jNFXqO+L+rLXo//bY="
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/invert-kv/-/invert-kv-2.0.0.tgz",
+      "integrity": "sha512-wPVv/y/QQ/Uiirj/vh3oP+1Ww+AWehmi1g5fFWGPF6IpCBCDVrhgHRMvrLfdYcwDh3QJbGXDW4JAuzxElLSqKA=="
    },
    "is-fullwidth-code-point": {
      "version": "2.0.0",
@@ -125,11 +146,11 @@
      "integrity": "sha1-6PvzdNxVb/iUehDcsFctYz8s+hA="
    },
    "lcid": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/lcid/-/lcid-1.0.0.tgz",
-      "integrity": "sha1-MIrMr6C8SDo4Z7S28rlQYlHRuDU=",
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/lcid/-/lcid-2.0.0.tgz",
+      "integrity": "sha512-avPEb8P8EGnwXKClwsNUgryVjllcRqtMYa49NTsbQagYuT1DcXnl1915oxWjoyGrXR6zH/Y0Zc96xWsPcoDKeA==",
      "requires": {
-        "invert-kv": "1.0.0"
+        "invert-kv": "^2.0.0"
      }
    },
    "locate-path": {
@@ -137,8 +158,8 @@
      "resolved": "https://registry.npmjs.org/locate-path/-/locate-path-2.0.0.tgz",
      "integrity": "sha1-K1aLJl7slExtnA3pw9u7ygNUzY4=",
      "requires": {
-        "p-locate": "2.0.0",
-        "path-exists": "3.0.0"
+        "p-locate": "^2.0.0",
+        "path-exists": "^3.0.0"
      }
    },
    "long": {
@@ -146,50 +167,57 @@
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      "integrity": "sha1-2CG3E4yhy1gcFymQ7xTbIAtcR0s="
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-    "lru-cache": {
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-      "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-4.1.2.tgz",
-      "integrity": "sha512-wgeVXhrDwAWnIF/yZARsFnMBtdFXOg1b8RIrhilp+0iDYN4mdQcNZElDZ0e4B64BhaxeQ5zN7PMyvu7we1kPeQ==",
+    "map-age-cleaner": {
+      "version": "0.1.3",
+      "resolved": "https://registry.npmjs.org/map-age-cleaner/-/map-age-cleaner-0.1.3.tgz",
+      "integrity": "sha512-bJzx6nMoP6PDLPBFmg7+xRKeFZvFboMrGlxmNj9ClvX53KrmvM5bXFXEWjbz4cz1AFn+jWJ9z/DJSz7hrs0w3w==",
      "requires": {
-        "pseudomap": "1.0.2",
-        "yallist": "2.1.2"
+        "p-defer": "^1.0.0"
      }
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-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/mem/-/mem-1.1.0.tgz",
-      "integrity": "sha1-Xt1StIXKHZAP5kiVUFOZoN+kX3Y=",
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+      "resolved": "https://registry.npmjs.org/mem/-/mem-4.3.0.tgz",
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      "requires": {
-        "mimic-fn": "1.2.0"
+        "map-age-cleaner": "^0.1.1",
+        "mimic-fn": "^2.0.0",
+        "p-is-promise": "^2.0.0"
      }
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+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/mimic-fn/-/mimic-fn-2.1.0.tgz",
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-      "version": "git+https://github.com/nasa8x/node-multi-hashing.git#d04972dd1dfa014f18a6c032199bf7239ed98d5f",
+      "version": "git+https://github.com/nasa8x/node-multi-hashing.git#25517b7c7896c9c2b5e342a4e0c835adb0b11951",
+      "from": "git+https://github.com/nasa8x/node-multi-hashing.git",
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-        "bindings": "1.3.0",
-        "bn.js": "4.11.8",
-        "bytebuffer": "5.0.1",
-        "nan": "2.10.0",
-        "yargs": "11.0.0"
+        "bignumber.js": "^6.0.0",
+        "bindings": "^1.5.0",
+        "bn.js": "^4.11.8",
+        "bytebuffer": "^5.0.1",
+        "nan": "^2.14.0",
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+      "version": "2.14.0",
+      "resolved": "https://registry.npmjs.org/nan/-/nan-2.14.0.tgz",
+      "integrity": "sha512-INOFj37C7k3AfaNTtX8RhsTw7qRy7eLET14cROi9+5HAVbbHuIWUHEauBv5qT4Av2tWasiTY1Jw6puUNqRJXQg=="
+    },
+    "nice-try": {
+      "version": "1.0.5",
+      "resolved": "https://registry.npmjs.org/nice-try/-/nice-try-1.0.5.tgz",
+      "integrity": "sha512-1nh45deeb5olNY7eX82BkPO7SSxR5SSYJiPTrTdFUVYwAl8CKMA5N9PjTYkHiRjisVcxcQ1HXdLhx2qxxJzLNQ=="
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      "integrity": "sha1-NakjLfo11wZ7TLLd8jV7GHFTbF8=",
      "requires": {
-        "path-key": "2.0.1"
+        "path-key": "^2.0.0"
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+      "version": "1.4.0",
+      "resolved": "https://registry.npmjs.org/once/-/once-1.4.0.tgz",
+      "integrity": "sha1-WDsap3WWHUsROsF9nFC6753Xa9E=",
      "requires": {
-        "execa": "0.7.0",
-        "lcid": "1.0.0",
-        "mem": "1.1.0"
+        "wrappy": "1"
      }
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+    "os-locale": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/os-locale/-/os-locale-3.1.0.tgz",
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+        "execa": "^1.0.0",
+        "lcid": "^2.0.0",
+        "mem": "^4.0.0"
+      }
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+      "resolved": "https://registry.npmjs.org/p-defer/-/p-defer-1.0.0.tgz",
+      "integrity": "sha1-n26xgvbJqozXQwBKfU+WsZaw+ww="
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      "integrity": "sha1-P7z7FbiZpEEjs0ttzBi3JDNqLK4="
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+      "resolved": "https://registry.npmjs.org/p-limit/-/p-limit-1.3.0.tgz",
+      "integrity": "sha512-vvcXsLAJ9Dr5rQOPk7toZQZJApBl2K4J6dANSsEuh6QI41JYcsS/qhTGa9ErIUUgK3WNQoJYvylxvjqmiqEA9Q==",
      "requires": {
-        "p-try": "1.0.0"
+        "p-try": "^1.0.0"
      }
    },
    "p-locate": {
@@ -225,7 +271,7 @@
      "resolved": "https://registry.npmjs.org/p-locate/-/p-locate-2.0.0.tgz",
      "integrity": "sha1-IKAQOyIqcMj9OcwuWAaA893l7EM=",
      "requires": {
-        "p-limit": "1.2.0"
+        "p-limit": "^1.1.0"
      }
    },
    "p-try": {
@@ -243,10 +289,14 @@
      "resolved": "https://registry.npmjs.org/path-key/-/path-key-2.0.1.tgz",
      "integrity": "sha1-QRyttXTFoUDTpLGRDUDYDMn0C0A="
    },
-    "pseudomap": {
-      "version": "1.0.2",
-      "resolved": "https://registry.npmjs.org/pseudomap/-/pseudomap-1.0.2.tgz",
-      "integrity": "sha1-8FKijacOYYkX7wqKw0wa5aaChrM="
+    "pump": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/pump/-/pump-3.0.0.tgz",
+      "integrity": "sha512-LwZy+p3SFs1Pytd/jYct4wpv49HiYCqd9Rlc5ZVdk0V+8Yzv6jR5Blk3TRmPL1ft69TxP0IMZGJ+WPFU2BFhww==",
+      "requires": {
+        "end-of-stream": "^1.1.0",
+        "once": "^1.3.1"
+      }
    },
    "require-directory": {
      "version": "2.1.1",
@@ -258,6 +308,11 @@
      "resolved": "https://registry.npmjs.org/require-main-filename/-/require-main-filename-1.0.1.tgz",
      "integrity": "sha1-l/cXtp1IeE9fUmpsWqj/3aBVpNE="
    },
+    "semver": {
+      "version": "5.7.1",
+      "resolved": "https://registry.npmjs.org/semver/-/semver-5.7.1.tgz",
+      "integrity": "sha512-sauaDf/PZdVgrLTNYHRtpXa1iRiKcaebiKQ1BJdpQlWH2lCvexQdX55snPFyK7QzpudqbCI0qXFfOasHdyNDGQ=="
+    },
    "set-blocking": {
      "version": "2.0.0",
      "resolved": "https://registry.npmjs.org/set-blocking/-/set-blocking-2.0.0.tgz",
@@ -268,7 +323,7 @@
      "resolved": "https://registry.npmjs.org/shebang-command/-/shebang-command-1.2.0.tgz",
      "integrity": "sha1-RKrGW2lbAzmJaMOfNj/uXer98eo=",
      "requires": {
-        "shebang-regex": "1.0.0"
+        "shebang-regex": "^1.0.0"
      }
    },
    "shebang-regex": {
@@ -286,8 +341,8 @@
      "resolved": "https://registry.npmjs.org/string-width/-/string-width-2.1.1.tgz",
      "integrity": "sha512-nOqH59deCq9SRHlxq1Aw85Jnt4w6KvLKqWVik6oA9ZklXLNIOlqg4F2yrT1MVaTjAqvVwdfeZ7w7aCvJD7ugkw==",
      "requires": {
-        "is-fullwidth-code-point": "2.0.0",
-        "strip-ansi": "4.0.0"
+        "is-fullwidth-code-point": "^2.0.0",
+        "strip-ansi": "^4.0.0"
      }
    },
    "strip-ansi": {
@@ -295,7 +350,7 @@
      "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-4.0.0.tgz",
      "integrity": "sha1-qEeQIusaw2iocTibY1JixQXuNo8=",
      "requires": {
-        "ansi-regex": "3.0.0"
+        "ansi-regex": "^3.0.0"
      }
    },
    "strip-eof": {
@@ -304,11 +359,11 @@
      "integrity": "sha1-u0P/VZim6wXYm1n80SnJgzE2Br8="
    },
    "which": {
-      "version": "1.3.0",
-      "resolved": "https://registry.npmjs.org/which/-/which-1.3.0.tgz",
-      "integrity": "sha512-xcJpopdamTuY5duC/KnTTNBraPK54YwpenP4lzxU8H91GudWpFv38u0CKjclE1Wi2EH2EDz5LRcHcKbCIzqGyg==",
+      "version": "1.3.1",
+      "resolved": "https://registry.npmjs.org/which/-/which-1.3.1.tgz",
+      "integrity": "sha512-HxJdYWq1MTIQbJ3nw0cqssHoTNU267KlrDuGZ1WYlxDStUtKUhOaJmh112/TZmHxxUfuJqPXSOm7tDyas0OSIQ==",
      "requires": {
-        "isexe": "2.0.0"
+        "isexe": "^2.0.0"
      }
    },
    "which-module": {
@@ -321,8 +376,8 @@
      "resolved": "https://registry.npmjs.org/wrap-ansi/-/wrap-ansi-2.1.0.tgz",
      "integrity": "sha1-2Pw9KE3QV5T+hJc8rs3Rz4JP3YU=",
      "requires": {
-        "string-width": "1.0.2",
-        "strip-ansi": "3.0.1"
+        "string-width": "^1.0.1",
+        "strip-ansi": "^3.0.1"
      },
      "dependencies": {
        "ansi-regex": {
@@ -335,7 +390,7 @@
          "resolved": "https://registry.npmjs.org/is-fullwidth-code-point/-/is-fullwidth-code-point-1.0.0.tgz",
          "integrity": "sha1-754xOG8DGn8NZDr4L95QxFfvAMs=",
          "requires": {
-            "number-is-nan": "1.0.1"
+            "number-is-nan": "^1.0.0"
          }
        },
        "string-width": {
@@ -343,9 +398,9 @@
          "resolved": "https://registry.npmjs.org/string-width/-/string-width-1.0.2.tgz",
          "integrity": "sha1-EYvfW4zcUaKn5w0hHgfisLmxB9M=",
          "requires": {
-            "code-point-at": "1.1.0",
-            "is-fullwidth-code-point": "1.0.0",
-            "strip-ansi": "3.0.1"
+            "code-point-at": "^1.0.0",
+            "is-fullwidth-code-point": "^1.0.0",
+            "strip-ansi": "^3.0.0"
          }
        },
        "strip-ansi": {
@@ -353,38 +408,38 @@
          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
          "integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=",
          "requires": {
-            "ansi-regex": "2.1.1"
+            "ansi-regex": "^2.0.0"
          }
        }
      }
    },
+    "wrappy": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
+      "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8="
+    },
    "y18n": {
      "version": "3.2.1",
      "resolved": "https://registry.npmjs.org/y18n/-/y18n-3.2.1.tgz",
      "integrity": "sha1-bRX7qITAhnnA136I53WegR4H+kE="
    },
-    "yallist": {
-      "version": "2.1.2",
-      "resolved": "https://registry.npmjs.org/yallist/-/yallist-2.1.2.tgz",
-      "integrity": "sha1-HBH5IY8HYImkfdUS+TxmmaaoHVI="
-    },
    "yargs": {
-      "version": "11.0.0",
-      "resolved": "https://registry.npmjs.org/yargs/-/yargs-11.0.0.tgz",
-      "integrity": "sha512-Rjp+lMYQOWtgqojx1dEWorjCofi1YN7AoFvYV7b1gx/7dAAeuI4kN5SZiEvr0ZmsZTOpDRcCqrpI10L31tFkBw==",
+      "version": "11.1.1",
+      "resolved": "https://registry.npmjs.org/yargs/-/yargs-11.1.1.tgz",
+      "integrity": "sha512-PRU7gJrJaXv3q3yQZ/+/X6KBswZiaQ+zOmdprZcouPYtQgvNU35i+68M4b1ZHLZtYFT5QObFLV+ZkmJYcwKdiw==",
      "requires": {
-        "cliui": "4.0.0",
-        "decamelize": "1.2.0",
-        "find-up": "2.1.0",
-        "get-caller-file": "1.0.2",
-        "os-locale": "2.1.0",
-        "require-directory": "2.1.1",
-        "require-main-filename": "1.0.1",
-        "set-blocking": "2.0.0",
-        "string-width": "2.1.1",
-        "which-module": "2.0.0",
-        "y18n": "3.2.1",
-        "yargs-parser": "9.0.2"
+        "cliui": "^4.0.0",
+        "decamelize": "^1.1.1",
+        "find-up": "^2.1.0",
+        "get-caller-file": "^1.0.1",
+        "os-locale": "^3.1.0",
+        "require-directory": "^2.1.1",
+        "require-main-filename": "^1.0.1",
+        "set-blocking": "^2.0.0",
+        "string-width": "^2.0.0",
+        "which-module": "^2.0.0",
+        "y18n": "^3.2.1",
+        "yargs-parser": "^9.0.2"
      }
    },
    "yargs-parser": {
@@ -392,7 +447,7 @@
      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-9.0.2.tgz",
      "integrity": "sha1-nM9qQ0YP5O1Aqbto9I1DuKaMwHc=",
      "requires": {
-        "camelcase": "4.1.0"
+        "camelcase": "^4.1.0"
      }
    }
  }
--- a/package.json
+++ b/package.json
@@ -22,6 +22,6 @@
  "dependencies": {
    "crypto": "^1.0.1",
    "multi-hashing": "git+https://github.com/nasa8x/node-multi-hashing.git",
-    "yargs": "^11.1.0"
+    "yargs": "^11.1.1"
  }
 }
--- a/test.js
+++ b/test.js
@@ -0,0 +1,8 @@
+
+
+var number = parseInt();
+
+
+ var buff = Buffer.alloc(8);
+ buff.writeDoubleLE(0xFFFFFFFF, 0);
+ console.log(buff);
--- a/utils.js
+++ b/utils.js
@@ -10,6 +10,12 @@ function swapHex(value) {
  return s2;
 }

+function intToHex(integer) {
+  let number = integer.toString(16).toUpperCase()
+  if( (number.length % 2) > 0 ) { number= "0" + number }
+  return number
+}
+
 function numToBytes(num, bytes) {
  if (bytes === undefined) bytes = 8;
  if (bytes == 0) return [];
@@ -59,6 +65,7 @@ function reverseBuffer(buff) {
 };

 module.exports = {
+  intToHex,
  swapHex,
  numToBytes,
  numToVarInt,