up8-ticket

commit c0c5d77ce18c1ed8302c861726f838b60d85c92d
Author: Jared Tobin <jared@jtobin.io>
Date:   Wed, 16 Sep 2020 21:30:47 -0230

release: v0.1.0

Diffstat:
A
.gitignore
 | 
1
+
A
README.md
 | 
18
++++++++++++++++++
A
package-lock.json
 | 
61
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
A
package.json
 | 
18
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A
src/index.js
 | 
29
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5 files changed, 127 insertions(+), 0 deletions(-)
diff --git a/.gitignore b/.gitignore
@@ -0,0 +1 @@
+node_modules
diff --git a/README.md b/README.md
@@ -0,0 +1,18 @@
+# master-ticket-generator
+
+Generate `@q` master tickets in exactly the same way
+[urbit-wallet-generator][wgen] does.
+
+## but how
+
+Clone the repository, `npm install` to grab the dependencies, and then:
+
+```
+$ node --experimental-repl-await
+> const tg = require('./src')
+> let ticket = await tg.gen(384) // supply desired number of bits
+> ticket
+'~wisbyl-tarfes-biltug-datmyr-rigsyp-ribryc-nocmyr-bilres-mipset-patsut-todbur-foptev-lorfer-famtux-loppes-mismug-tobdyl-hopnes-lophul-tapdus-habtuc-ragseg-dossev-ramneb'
+```
+
+[wgen]: https://github.com/urbit/urbit-wallet-generator
diff --git a/package-lock.json b/package-lock.json
@@ -0,0 +1,61 @@
+{
+  "name": "ticket-generator",
+  "version": "0.1.0",
+  "lockfileVersion": 1,
+  "requires": true,
+  "dependencies": {
+    "bn.js": {
+      "version": "4.11.9",
+      "resolved": "https://registry.npmjs.org/bn.js/-/bn.js-4.11.9.tgz",
+      "integrity": "sha512-E6QoYqCKZfgatHTdHzs1RRKP7ip4vvm+EyRUeE2RF0NblwVvb0p6jSVeNTOFxPn26QXN2o6SMfNxKp6kU8zQaw=="
+    },
+    "iced-runtime": {
+      "version": "1.0.4",
+      "resolved": "https://registry.npmjs.org/iced-runtime/-/iced-runtime-1.0.4.tgz",
+      "integrity": "sha512-rgiJXNF6ZgF2Clh/TKUlBDW3q51YPDJUXmxGQXx1b8tbZpVpTn+1RX9q1sjNkujXIIaVxZByQzPHHORg7KV51g=="
+    },
+    "lodash": {
+      "version": "4.17.20",
+      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.20.tgz",
+      "integrity": "sha512-PlhdFcillOINfeV7Ni6oF1TAEayyZBoZ8bcshTHqOYJYlrqzRK5hagpagky5o4HfCzzd1TRkXPMFq6cKk9rGmA=="
+    },
+    "lodash.chunk": {
+      "version": "4.2.0",
+      "resolved": "https://registry.npmjs.org/lodash.chunk/-/lodash.chunk-4.2.0.tgz",
+      "integrity": "sha1-ZuXOH3btJ7QwPYxlEujRIW6BBrw="
+    },
+    "lodash.flatmap": {
+      "version": "4.5.0",
+      "resolved": "https://registry.npmjs.org/lodash.flatmap/-/lodash.flatmap-4.5.0.tgz",
+      "integrity": "sha1-74y/QI9uSCaGYzRTBcaswLd4cC4="
+    },
+    "lodash.isequal": {
+      "version": "4.5.0",
+      "resolved": "https://registry.npmjs.org/lodash.isequal/-/lodash.isequal-4.5.0.tgz",
+      "integrity": "sha1-QVxEePK8wwEgwizhDtMib30+GOA="
+    },
+    "lodash.zipwith": {
+      "version": "4.2.0",
+      "resolved": "https://registry.npmjs.org/lodash.zipwith/-/lodash.zipwith-4.2.0.tgz",
+      "integrity": "sha1-r6zwP9LzhK8p4mPDxr2juA4/Uf0="
+    },
+    "more-entropy": {
+      "version": "0.0.7",
+      "resolved": "https://registry.npmjs.org/more-entropy/-/more-entropy-0.0.7.tgz",
+      "integrity": "sha1-Z7/G96hvJvvDeqyD/UbYjGHRCbU=",
+      "requires": {
+        "iced-runtime": ">=0.0.1"
+      }
+    },
+    "urbit-ob": {
+      "version": "5.0.1",
+      "resolved": "https://registry.npmjs.org/urbit-ob/-/urbit-ob-5.0.1.tgz",
+      "integrity": "sha512-qGNAwu87XNkW3g8ah4fUwmh2EKXtsdhEbyEiE5qX4Op17rhLH3HSkvu8g9z+MhqX51Uz9sf8ktvqJj/IRwETIQ==",
+      "requires": {
+        "bn.js": "^4.11.8",
+        "lodash.chunk": "^4.2.0",
+        "lodash.isequal": "^4.5.0"
+      }
+    }
+  }
+}
diff --git a/package.json b/package.json
@@ -0,0 +1,18 @@
+{
+  "name": "master-ticket-generator",
+  "version": "0.1.0",
+  "description": "Generate master ticket-length @q values",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "~nidsut-tomdun",
+  "license": "MIT",
+  "dependencies": {
+    "lodash.chunk": "^4.2.0",
+    "lodash.flatmap": "^4.5.0",
+    "lodash.zipwith": "^4.2.0",
+    "more-entropy": "0.0.7",
+    "urbit-ob": "^5.0.1"
+  }
+}
diff --git a/src/index.js b/src/index.js
@@ -0,0 +1,29 @@
+const more = require('more-entropy')
+const ob = require('urbit-ob')
+const chunk = require('lodash.chunk')
+const flatMap = require('lodash.flatmap')
+const zipWith = require('lodash.zipwith')
+
+const gen = bits => {
+  const bytes = bits / 8
+  const some  = crypto.rng(bytes)
+
+  const prng = new more.Generator()
+
+  return new Promise((resolve, reject) => {
+    prng.generate(bits, result =>  {
+      const chunked = chunk(result, 2)
+      const desired = chunked.slice(0, bytes) // only take required entropy
+      const more    = flatMap(desired, arr => arr[0] ^ arr[1])
+      const entropy = zipWith(some, more, (x, y) => x ^ y)
+      const buf     = Buffer.from(entropy)
+      const patq    = ob.hex2patq(buf.toString('hex'))
+      resolve(patq)
+      reject("entropy generation failed")
+    })
+  })
+}
+
+module.exports = {
+  gen: gen
+}