├── .browserslistrc
├── public
    ├── favicon.ico
    └── index.html
├── vue.config.js
├── src
    ├── assets
    │   ├── logo.png
    │   └── logo.svg
    ├── plugins
    │   └── vuetify.js
    ├── main.js
    ├── fbConfig.js
    ├── processor.py
    └── App.vue
├── babel.config.js
├── .gitignore
├── .eslintrc.js
├── README.md
├── package.json
└── scryptTool.html


/.browserslistrc:
--------------------------------------------------------------------------------
1 | > 1%
2 | last 2 versions
3 | not dead
4 | 


--------------------------------------------------------------------------------
/public/favicon.ico:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/davidacm/bcrCardVerifier/master/public/favicon.ico


--------------------------------------------------------------------------------
/vue.config.js:
--------------------------------------------------------------------------------
1 | module.exports = {
2 |   "transpileDependencies": [
3 |     "vuetify"
4 |   ]
5 | }


--------------------------------------------------------------------------------
/src/assets/logo.png:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/davidacm/bcrCardVerifier/master/src/assets/logo.png


--------------------------------------------------------------------------------
/babel.config.js:
--------------------------------------------------------------------------------
1 | module.exports = {
2 |   presets: [
3 |     '@vue/cli-plugin-babel/preset'
4 |   ]
5 | }
6 | 


--------------------------------------------------------------------------------
/src/plugins/vuetify.js:
--------------------------------------------------------------------------------
1 | import Vue from 'vue';
2 | import Vuetify from 'vuetify/lib';
3 | 
4 | Vue.use(Vuetify);
5 | 
6 | export default new Vuetify({
7 | });
8 | 


--------------------------------------------------------------------------------
/src/main.js:
--------------------------------------------------------------------------------
 1 | import Vue from 'vue'
 2 | import App from './App.vue'
 3 | import vuetify from './plugins/vuetify';
 4 | 
 5 | 
 6 | Vue.config.productionTip = true
 7 | 
 8 | new Vue({
 9 |   vuetify,
10 |   render: h => h(App)
11 | }).$mount('#app')
12 | 


--------------------------------------------------------------------------------
/.gitignore:
--------------------------------------------------------------------------------
 1 | .DS_Store
 2 | node_modules
 3 | /dist
 4 | 
 5 | # local env files
 6 | .env.local
 7 | .env.*.local
 8 | 
 9 | # Log files
10 | npm-debug.log*
11 | yarn-debug.log*
12 | yarn-error.log*
13 | pnpm-debug.log*
14 | 
15 | # Editor directories and files
16 | .idea
17 | .vscode
18 | *.suo
19 | *.ntvs*
20 | *.njsproj
21 | *.sln
22 | *.sw?
23 | *.code-workspace


--------------------------------------------------------------------------------
/.eslintrc.js:
--------------------------------------------------------------------------------
 1 | module.exports = {
 2 |   root: true,
 3 |   env: {
 4 |     node: true
 5 |   },
 6 |   'extends': [
 7 |     'plugin:vue/essential',
 8 |     'eslint:recommended'
 9 |   ],
10 |   parserOptions: {
11 |     parser: 'babel-eslint'
12 |   },
13 |   rules: {
14 |     'no-console': process.env.NODE_ENV === 'production' ? 'warn' : 'off',
15 |     'no-debugger': process.env.NODE_ENV === 'production' ? 'warn' : 'off'
16 |   }
17 | }
18 | 


--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
 1 | # bcrcards
 2 | 
 3 | ## Project setup
 4 | ```
 5 | npm install
 6 | ```
 7 | 
 8 | ### Compiles and hot-reloads for development
 9 | ```
10 | npm run serve
11 | ```
12 | 
13 | ### Compiles and minifies for production
14 | ```
15 | npm run build
16 | ```
17 | 
18 | ### Lints and fixes files
19 | ```
20 | npm run lint
21 | ```
22 | 
23 | ### Customize configuration
24 | See [Configuration Reference](https://cli.vuejs.org/config/).
25 | 


--------------------------------------------------------------------------------
/src/assets/logo.svg:
--------------------------------------------------------------------------------
1 | <svg id="Layer_1" data-name="Layer 1" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 87.5 100"><defs><style>.cls-1{fill:#1697f6;}.cls-2{fill:#7bc6ff;}.cls-3{fill:#1867c0;}.cls-4{fill:#aeddff;}</style></defs><title>Artboard 46</title><polyline class="cls-1" points="43.75 0 23.31 0 43.75 48.32"/><polygon class="cls-2" points="43.75 62.5 43.75 100 0 14.58 22.92 14.58 43.75 62.5"/><polyline class="cls-3" points="43.75 0 64.19 0 43.75 48.32"/><polygon class="cls-4" points="64.58 14.58 87.5 14.58 43.75 100 43.75 62.5 64.58 14.58"/></svg>
2 | 


--------------------------------------------------------------------------------
/src/fbConfig.js:
--------------------------------------------------------------------------------
 1 | import firebase from 'firebase/app';
 2 | import 'firebase/database'; // If using Firebase database
 3 | var config = {
 4 |     apiKey: "AIzaSyAC35ubCOotpc9tA0vRshxfTEqMisjONHA",
 5 |     authDomain: "test2-511fa.firebaseapp.com",
 6 |     databaseURL: "https://test2-511fa.firebaseio.com",
 7 |     projectId: "test2-511fa",
 8 |     storageBucket: "test2-511fa.appspot.com",
 9 |     messagingSenderId: "731937336766",
10 |     appId: "1:731937336766:web:8ef6034f39c316d85cddef"
11 |   };
12 | firebase.initializeApp(config);
13 | var db = firebase.database();
14 | const hashesCollection = db.ref("hashes");
15 | 
16 | export { db, hashesCollection }


--------------------------------------------------------------------------------
/package.json:
--------------------------------------------------------------------------------
 1 | {
 2 |   "name": "bcrcards",
 3 |   "version": "0.1.0",
 4 |   "private": true,
 5 |   "scripts": {
 6 |     "serve": "vue-cli-service serve",
 7 |     "build": "vue-cli-service build",
 8 |     "lint": "vue-cli-service lint",
 9 |     "deploy": "node ./node_modules/vue-gh-pages/index.js -b gh-pages"
10 |   },
11 |   "dependencies": {
12 |     "core-js": "^3.6.5",
13 |     "firebase": "^7.14.6",
14 |     "scrypt-js": "^3.0.1",
15 |     "vue": "^2.6.11",
16 |     "vuetify": "^2.2.11"
17 |   },
18 |   "devDependencies": {
19 |     "@vue/cli-plugin-babel": "~4.4.0",
20 |     "@vue/cli-plugin-eslint": "~4.4.0",
21 |     "@vue/cli-service": "~4.4.0",
22 |     "babel-eslint": "^10.1.0",
23 |     "eslint": "^6.7.2",
24 |     "eslint-plugin-vue": "^6.2.2",
25 |     "sass": "^1.19.0",
26 |     "sass-loader": "^8.0.0",
27 |     "vue-cli-plugin-vuetify": "~2.0.5",
28 |     "vue-gh-pages": "^1.19.1",
29 |     "vue-template-compiler": "^2.6.11",
30 |     "vuetify-loader": "^1.3.0"
31 |   },
32 |   "homepage": "https://github.com/davidacm/bcrCardVerifier"
33 | }
34 | 


--------------------------------------------------------------------------------
/public/index.html:
--------------------------------------------------------------------------------
 1 | <!DOCTYPE html>
 2 | <html lang="en">
 3 |   <head>
 4 |     <meta charset="utf-8">
 5 |     <meta http-equiv="X-UA-Compatible" content="IE=edge">
 6 |     <meta name="viewport" content="width=device-width,initial-scale=1.0">
 7 |     <link rel="icon" href="<%= BASE_URL %>favicon.ico">
 8 |     <title>Verificador de tarjetas filtradas</title>
 9 |     <script>
10 |       !function(f,b,e,v,n,t,s)
11 |       {if(f.fbq)return;n=f.fbq=function(){n.callMethod?
12 |       n.callMethod.apply(n,arguments):n.queue.push(arguments)};
13 |       if(!f._fbq)f._fbq=n;n.push=n;n.loaded=!0;n.version='2.0';
14 |       n.queue=[];t=b.createElement(e);t.async=!0;
15 |       t.src=v;s=b.getElementsByTagName(e)[0];
16 |       s.parentNode.insertBefore(t,s)}(window, document,'script',
17 |       'https://connect.facebook.net/en_US/fbevents.js');
18 |       fbq('init', '250697099558277');
19 |       fbq('track', 'PageView');
20 |     </script>
21 |     <noscript><img height="1" width="1" style="display:none"
22 |       src="https://www.facebook.com/tr?id=250697099558277&ev=PageView&noscript=1"
23 |     /></noscript>
24 |     <link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Roboto:100,300,400,500,700,900">
25 |     <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/@mdi/font@latest/css/materialdesignicons.min.css">
26 |   </head>
27 |   <body>
28 |     <noscript>
29 |       <strong>We're sorry but <%= htmlWebpackPlugin.options.title %> doesn't work properly without JavaScript enabled. Please enable it to continue.</strong>
30 |     </noscript>
31 |     <div id="app"></div>
32 |     <!-- built files will be auto injected -->
33 |   </body>
34 | </html>
35 | 


--------------------------------------------------------------------------------
/src/processor.py:
--------------------------------------------------------------------------------
 1 | import base64, hashlib, json, re
 2 | 
 3 | salt = b'c8m.qp+xv3*rhfUz'
 4 | hashFunction = lambda x: base64.b64encode(hashlib.scrypt(x.encode('mbcs'), salt=salt, n=128, r=8, p=1)).decode("UTF-8")
 5 | 
 6 | cardExp = re.compile(r",\d{8,23}=")
 7 | cards = set()
 8 | total = 0
 9 | notFound = []
10 | hashes = set()
11 | fileBufferSize = 5*2**20
12 | 
13 | def processData(f):
14 | 	global cards, total
15 | 	f= open(f, "r", fileBufferSize, "UTF-8")
16 | 	for k in f:
17 | 		r= cardExp.search(k)
18 | 		if r:
19 | 			cards.add(r.group(0)[1:-1])
20 | 			total+=1
21 | 		else: notFound.append(k)
22 | 	f.close()
23 | 
24 | def hasher(s):
25 | 	global hashes
26 | 	for k in s:
27 | 		tmp = hashFunction(k)
28 | 		if tmp in hashes:
29 | 			print ("error, hash collision, total hashes: ", len(hashes))
30 | 			break
31 | 		hashes.add(tmp)
32 | 
33 | def saveHashes(f):
34 | 	f= open(f, "w", fileBufferSize, "UTF-8")
35 | 	json.dump(list(hashes), f, indent=0)
36 | 	f.close()
37 | 
38 | 
39 | def process(fList, fOut):
40 | 	for k in fList:
41 | 		print ("process file", k)
42 | 		processData(k)
43 | 		print ("file processed, length set: ", len(cards))
44 | 	print("hashing set")
45 | 	hasher(cards)
46 | 	print ("saving data")
47 | 	saveHashes(fOut)
48 | 	print("finished!")
49 | 
50 | # escape characters to enable compatibility with firebase keys.
51 | replacements = {'.': '1',
52 | '$': '2',
53 | '#': '3',
54 | '/': '4',
55 | '[':'5',
56 | ']': '6'}
57 | 
58 | def escapeCharacters(s):
59 | 	s= s.replace("%", "%0")
60 | 	for k in replacements: s= s.replace(k, "%" +replacements[k])
61 | 	return s
62 | 
63 | def unescapeCharacters(s):
64 | 	for k in replacements: s = s.replace("%" +replacements[k], k)
65 | 	return s.replace("%0", "%")


--------------------------------------------------------------------------------
/src/App.vue:
--------------------------------------------------------------------------------
  1 | <template>
  2 |   <div id="app">
  3 |     <div id="welcome">
  4 |       <h2>Bienvenido al sistema de verificación de tarjetas filtradas tras el supuesto hackeo al Banco de Costa Rica</h2>
  5 |       <v-divider class="my-3"></v-divider>
  6 |       <br />
  7 |       <p>El objetivo de esta página es que las personas puedan verificar si sus tarjetas se encuentran en el listado de tarjetas filtradas del BCR, de forma fácil, fiable y segura.</p>
  8 |       <br />
  9 |       <p>Aunque existen otros sitios que ofrecen este servicio, generan muchos falsos positivos debido a que no se comprueba el número completo de una tarjeta. Una de mis tarjetas que no fue filtrada, generó más de 50 coincidencias.</p>
 10 |       <br />
 11 |       <p>He ideado un método para poder verificar si un número de tarjeta se encuentra en el listado de tarjetas filtradas, sin necesidad que un número de tarjeta deba ser enviado al servidor que contiene la base de datos.</p>
 12 |       <br />
 13 |       <p>Aunque el banco de Costa Rica asegura que la información de las tarjetas no ha sido filtrada y si lo fue los datos ya no son relevantes, el hecho de que sus sistemas hayan sido hackeados refleja deficiencias en el sistema general.</p>
 14 |       <br />
 15 |       <p>Aunque quisiera creer en el mensaje de tranquilidad que el BCR nos envía, me resulta difícil debido a los múltiples problemas que he tenido al usar su sistema mediante la página web. Lo cual me hace pensar que sí existen deficiencias que podrían ser aprovechadas por hackers.</p>
 16 |     </div>
 17 | 
 18 |     <div id="questions">
 19 |       <h2>Preguntas frecuentes</h2>
 20 |       <v-divider class="my-3"></v-divider>
 21 |       <br />
 22 |       <v-row justify="center">
 23 |         <v-expansion-panels popout>
 24 |           <v-expansion-panel>
 25 |             <v-expansion-panel-header>¿Mi información está segura en esta página?</v-expansion-panel-header>
 26 |             <v-expansion-panel-content>
 27 |               <p>Brindar datos personales o de sus tarjetas es algo que nunca debería hacer. Por eso en vez de solicitar el número, se solicita una clave que se genera a partir de dicho número mediante un algoritmo llamado scrypt.</p>
 28 |               <br />
 29 |               <p>No hay forma de revertir o determinar el dato inicial partiendo de la clave generada, scrypt es uno de los algoritmos más seguros a la hora de guardar por ejemplo una contraseña en una base de datos.</p>
 30 |               <br />
 31 |               <p>Se ha calculado la clave para cada tarjeta en apariencia robada, y se han almacenado dichas claves en una base de datos. La clave que envíe será comparada contra todas las claves existentes. De manera que su número de tarjeta solo se requiere para generar la clave, y poderla comparar con el listado de claves disponibles en la base de datos.</p>
 32 |             </v-expansion-panel-content>
 33 |           </v-expansion-panel>
 34 | 
 35 |           <v-expansion-panel>
 36 |             <v-expansion-panel-header>¿Como puedo estar seguro que mi información no es almacenada en alguna parte?</v-expansion-panel-header>
 37 |             <v-expansion-panel-content>
 38 |               <p>Para garantizar que ningún dato confidencial se está capturando, la aplicación se ha hecho en modalidad open source (código abierto) de manera que cualquier persona puede revisar el código fuente, incluso los historiales de cambio si los hubieran.</p>
 39 |               <br />
 40 |               <p>Esta aplicación se encuentra en github en un repositorio de código abierto, la misma es servida por la misma plataforma de github. Este servicio de servir una página web solo se habilita para proyectos de código abierto. Por lo tanto el mismo código del repositorio en github, es el que se ejecuta en este sitio.</p>
 41 |               <br />
 42 |               <p>Si no confía en cuales datos se envían al servidor, siempre puede generar e introducir la clave asociada a su tarjeta con otra herramienta.</p>
 43 |             </v-expansion-panel-content>
 44 |           </v-expansion-panel>
 45 | 
 46 |           <v-expansion-panel>
 47 |             <v-expansion-panel-header>¿Puedo generar la clave por mis propios medios y consultarla en esta aplicación?</v-expansion-panel-header>
 48 |             <v-expansion-panel-content>
 49 |               <p>¡Claro! En el sitio se ha dispuesto de una herramienta para generar la clave con el algoritmo scrypt por facilidad, pero la clave puede ser generada en otra parte. Introduce el dato requerido en el campo "Clave derivada"</p>
 50 |               <br />
 51 |               <p>
 52 |                 Para su facilidad se ha creado una herramienta que funciona offline, preconfigurada con los parámetros necesarios.
 53 |                 <a
 54 |                   target="_blank"
 55 |                   href="https://htmlpreview.github.io/?https://github.com/davidacm/bcrCardVerifier/blob/master/scryptTool.html"
 56 |                 >accede en este link</a>
 57 |               </p>
 58 | 
 59 |               <br />
 60 |               <p>Si utilizará otra herramienta, esta es la información que necesita.</p>
 61 |               <br />
 62 |               <p>Salt: "c8m.qp+xv3*rhfUz" (sin las comillas).</p>
 63 |               <br />
 64 |               <p>Algoritmo: scrypt, N: 128, r: 8, p: 1.</p>
 65 |               <br />
 66 |               <br /><p>El resultado se debe convertir a base64 ya que así se encuentran almacenadas las claves en la base de datos.</p>
 67 |               <p>Lo ideal es que compare con cualquier cadena de texto origen, de manera que coincidan los resultados generados de la herramienta utilizada y este sitio.</p>
 68 |             </v-expansion-panel-content>
 69 |           </v-expansion-panel>
 70 | 
 71 |           <v-expansion-panel>
 72 |             <v-expansion-panel-header>¿Cuantas tarjetas filtradas se encuentran en la base de datos?</v-expansion-panel-header>
 73 |             <v-expansion-panel-content>
 74 |               <p>Esta base de datos se generó partiendo de dos archivos de transacciones, de aproximadamente 2gb cada uno. Se procesaron en total 12216470 transacciones. Se descartaron 2981 de ellas, y se encontró que existen 1260500 tarjetas distintas en el total de transacciones disponibles.</p>
 75 |             </v-expansion-panel-content>
 76 |           </v-expansion-panel>
 77 | 
 78 |           <v-expansion-panel>
 79 |             <v-expansion-panel-header>He encontrado un problema, tengo una sugerencia o quisiera hacer una mejora. ¿Como puedo contribuir?</v-expansion-panel-header>
 80 |             <v-expansion-panel-content>
 81 |               <p>Si sabe usar git y ha usado la plataforma github, todo aporte es bienvenido en este repositorio.</p>
 82 |             </v-expansion-panel-content>
 83 |           </v-expansion-panel>
 84 |           <v-expansion-panel>
 85 |             <v-expansion-panel-header>Ayuda, no sé como generar la clave derivada!</v-expansion-panel-header>
 86 |             <v-expansion-panel-content>
 87 |               <p>En la pregunta "¿Puedo generar la clave por mis propios medios y consultarla en esta aplicación?"</p>
 88 |               <br /><p>se le brinda una página que puede descargar y le permite generar la clave derivada sin internet en cualquier dispositivo que soporte javascript. Pero si aún así lo encuentra complicado y confía en este sitio, al introducir el número de tarjeta en el cuadro de edición siguiente la clave será generada automáticamente para usted</p><br />
 89 |               <form>
 90 |                 <v-text-field v-model.lazy.trim="card" label="Número de tarjeta"></v-text-field>
 91 |               </form>
 92 |             </v-expansion-panel-content>
 93 |           </v-expansion-panel>
 94 |         </v-expansion-panels>
 95 |       </v-row>
 96 |     </div>
 97 | 
 98 |     <div id="form">
 99 |       <h2>Introduzca los datos, la clave drivada generada mediante scrypt</h2>
100 |       <br />
101 |       <p>La clave derivada es una forma de poder verificar su número de tarjeta sin que tenga que enviar su número en ningún momento. Si quiere conocer como poder generar dicha clave, le recomiendo leer las preguntas frecuentes. Entiendo que puede ser complicado para usted, pero es la única forma segura de poder contrastar su tarjeta contra toda la información disponible sin que usted tenga que revelar su número de tarjeta. Disculpas por la falta de usabilidad, a veces la seguridad requiere hacer ciertos sacrificios.</p><br />
102 |       <v-divider class="my-3"></v-divider>
103 |       <form>
104 |         <v-text-field
105 |           error-messages="*"
106 |           v-model="scryptedCard"
107 |           required
108 |           autocomplete="off"
109 |           label="Clave derivada"
110 |         ></v-text-field>
111 |         <v-btn :disabled="scryptedCard==''" @click="checkKey">Verificar clave</v-btn>
112 |       </form>
113 |     </div>
114 | 
115 |     <div id="result" v-show="this.checkedKey != ''">
116 |       <h3>Resultados para la clave:</h3>
117 |       <p>{{checkedKey}}</p>
118 |       <br />
119 |       <p>Resultado {{result?"positivo":"negativo"}}. La clave proporcionada {{result?"":"no"}} se encuentra en la base de datos</p><br />
120 |       <p v-if="result">Dado que su tarjeta se encuentra en la lista, lo más recomendable es que solicite el remplazo de su tarjeta con su banco. De lo contrario se expone a diversas estafas</p>
121 |     </div>
122 | 
123 |     <v-card height="100">
124 |       <v-footer absolute class="font-weight-medium">
125 |         <v-col class="text-center" cols="12">
126 |           {{ new Date().getFullYear() }} —
127 |           <strong>DCM</strong>
128 |         </v-col>
129 |       </v-footer>
130 |     </v-card>
131 |   </div>
132 | </template>
133 | 
134 | <script>
135 | import scrypt from "scrypt-js/scrypt";
136 | var db = require("./fbConfig.js");
137 | const hashesCollection = db.hashesCollection;
138 | 
139 | const salt = stringToBinary("c8m.qp+xv3*rhfUz");
140 | 
141 | function replaceAll(s, search, w) {
142 |   return s.split(search).join(w);
143 | }
144 | 
145 | const replacements = [
146 |   [".", "1"],
147 |   ["$", "2"],
148 |   ["#", "3"],
149 |   ["/", "4"],
150 |   ["[", "5"],
151 |   ["]", "6"]
152 | ];
153 | 
154 | function escapeCharacters(s) {
155 |   s = replaceAll(s, "%", "%0");
156 |   for (let k of replacements) s = replaceAll(s, k[0], "%" + k[1]);
157 |   return s;
158 | }
159 | 
160 | function unescapeCharacters(s) {
161 |   for (let k of replacements) s = replaceAll(s, "%" + k[1], k[0]);
162 |   s = replaceAll(s, "%0", "%");
163 |   return s;
164 | }
165 | 
166 | function stringToBinary(s) {
167 |   if (!s || s == "") return null;
168 |   let i = s.length,
169 |     r = new Int8Array(i);
170 |   while (i--) r[i] = s.charCodeAt(i);
171 |   return r;
172 | }
173 | 
174 | export default {
175 |   name: "App",
176 |   data() {
177 |     return {
178 |       card: "",
179 |       scryptedCard: "",
180 |       checkedKey: "",
181 |       result: false,
182 |       cachedKeys: {}
183 |     };
184 |   },
185 |   methods: {
186 |     checkKey() {
187 |       if (this.scryptedCard == "") return;
188 |       const escapedValue = escapeCharacters(this.scryptedCard);
189 | 
190 |       if (this.cachedKeys[escapedValue] !== undefined) {
191 |         this.result = this.cachedKeys[escapedValue];
192 |         this.checkedKey = unescapeCharacters(escapedValue);
193 |       } else
194 |         hashesCollection
195 |           .child(escapedValue)
196 |           .once("value")
197 |           .then(s => {
198 |             this.cachedKeys[escapedValue] = s.val();
199 |             this.result = s.val();
200 |             this.checkedKey = unescapeCharacters(escapedValue);
201 |           });
202 |     }
203 |   },
204 |   watch: {
205 |     card(val) {
206 |       if (!val) {
207 |         this.scryptedCard = "";
208 |         return;
209 |       }
210 |       let tmp = stringToBinary(val);
211 |       scrypt.scrypt(tmp, salt, 128, 8, 1, 64).then(key => {
212 |         this.scryptedCard = btoa(String.fromCharCode.apply(null, key));
213 |       });
214 |     }
215 |   }
216 | };
217 | </script>
218 | 
219 | <style>
220 | #app {
221 |   font-family: Avenir, Helvetica, Arial, sans-serif;
222 |   -webkit-font-smoothing: antialiased;
223 |   -moz-osx-font-smoothing: grayscale;
224 |   text-align: justify;
225 |   color: #2c3e50;
226 |   margin-top: 40px;
227 |   margin-left: 40px;
228 |   margin-right: 40px;
229 | }
230 | 
231 | #questions {
232 |   margin-top: 20px;
233 | }
234 | 
235 | #form {
236 |   margin-top: 20px;
237 |   margin-bottom: 20px;
238 | }
239 | 
240 | #result {
241 |   margin-bottom: 20px;
242 | }
243 | </style>
244 | 
245 | 


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/scryptTool.html:
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  1 | <!DOCTYPE html>
  2 | <html>
  3 | 
  4 | <head>
  5 |   <meta charset="utf-8">
  6 |   <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
  7 |   <title>Scrypt tool</title>
  8 |   <script>
  9 | "use strict";
 10 | 
 11 | (function(root) {
 12 |     const MAX_VALUE = 0x7fffffff;
 13 | 
 14 |     // The SHA256 and PBKDF2 implementation are from scrypt-async-js:
 15 |     // See: https://github.com/dchest/scrypt-async-js
 16 |     function SHA256(m) {
 17 |         const K = new Uint32Array([
 18 |            0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b,
 19 |            0x59f111f1, 0x923f82a4, 0xab1c5ed5, 0xd807aa98, 0x12835b01,
 20 |            0x243185be, 0x550c7dc3, 0x72be5d74, 0x80deb1fe, 0x9bdc06a7,
 21 |            0xc19bf174, 0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc,
 22 |            0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da, 0x983e5152,
 23 |            0xa831c66d, 0xb00327c8, 0xbf597fc7, 0xc6e00bf3, 0xd5a79147,
 24 |            0x06ca6351, 0x14292967, 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc,
 25 |            0x53380d13, 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,
 26 |            0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3, 0xd192e819,
 27 |            0xd6990624, 0xf40e3585, 0x106aa070, 0x19a4c116, 0x1e376c08,
 28 |            0x2748774c, 0x34b0bcb5, 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f,
 29 |            0x682e6ff3, 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208,
 30 |            0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2
 31 |        ]);
 32 | 
 33 |         let h0 = 0x6a09e667, h1 = 0xbb67ae85, h2 = 0x3c6ef372, h3 = 0xa54ff53a;
 34 |         let h4 = 0x510e527f, h5 = 0x9b05688c, h6 = 0x1f83d9ab, h7 = 0x5be0cd19;
 35 |         const w = new Uint32Array(64);
 36 | 
 37 |         function blocks(p) {
 38 |             let off = 0, len = p.length;
 39 |             while (len >= 64) {
 40 |                 let a = h0, b = h1, c = h2, d = h3, e = h4, f = h5, g = h6, h = h7, u, i, j, t1, t2;
 41 | 
 42 |                 for (i = 0; i < 16; i++) {
 43 |                     j = off + i*4;
 44 |                     w[i] = ((p[j] & 0xff)<<24) | ((p[j+1] & 0xff)<<16) |
 45 |                     ((p[j+2] & 0xff)<<8) | (p[j+3] & 0xff);
 46 |                 }
 47 | 
 48 |                 for (i = 16; i < 64; i++) {
 49 |                     u = w[i-2];
 50 |                     t1 = ((u>>>17) | (u<<(32-17))) ^ ((u>>>19) | (u<<(32-19))) ^ (u>>>10);
 51 | 
 52 |                     u = w[i-15];
 53 |                     t2 = ((u>>>7) | (u<<(32-7))) ^ ((u>>>18) | (u<<(32-18))) ^ (u>>>3);
 54 | 
 55 |                     w[i] = (((t1 + w[i-7]) | 0) + ((t2 + w[i-16]) | 0)) | 0;
 56 |                 }
 57 | 
 58 |                 for (i = 0; i < 64; i++) {
 59 |                     t1 = ((((((e>>>6) | (e<<(32-6))) ^ ((e>>>11) | (e<<(32-11))) ^
 60 |                              ((e>>>25) | (e<<(32-25)))) + ((e & f) ^ (~e & g))) | 0) +
 61 |                           ((h + ((K[i] + w[i]) | 0)) | 0)) | 0;
 62 | 
 63 |                     t2 = ((((a>>>2) | (a<<(32-2))) ^ ((a>>>13) | (a<<(32-13))) ^
 64 |                            ((a>>>22) | (a<<(32-22)))) + ((a & b) ^ (a & c) ^ (b & c))) | 0;
 65 | 
 66 |                     h = g;
 67 |                     g = f;
 68 |                     f = e;
 69 |                     e = (d + t1) | 0;
 70 |                     d = c;
 71 |                     c = b;
 72 |                     b = a;
 73 |                     a = (t1 + t2) | 0;
 74 |                 }
 75 | 
 76 |                 h0 = (h0 + a) | 0;
 77 |                 h1 = (h1 + b) | 0;
 78 |                 h2 = (h2 + c) | 0;
 79 |                 h3 = (h3 + d) | 0;
 80 |                 h4 = (h4 + e) | 0;
 81 |                 h5 = (h5 + f) | 0;
 82 |                 h6 = (h6 + g) | 0;
 83 |                 h7 = (h7 + h) | 0;
 84 | 
 85 |                 off += 64;
 86 |                 len -= 64;
 87 |             }
 88 |         }
 89 | 
 90 |         blocks(m);
 91 | 
 92 |         let i, bytesLeft = m.length % 64,
 93 |         bitLenHi = (m.length / 0x20000000) | 0,
 94 |         bitLenLo = m.length << 3,
 95 |         numZeros = (bytesLeft < 56) ? 56 : 120,
 96 |         p = m.slice(m.length - bytesLeft, m.length);
 97 | 
 98 |         p.push(0x80);
 99 |         for (i = bytesLeft + 1; i < numZeros; i++) { p.push(0); }
100 |         p.push((bitLenHi >>> 24) & 0xff);
101 |         p.push((bitLenHi >>> 16) & 0xff);
102 |         p.push((bitLenHi >>> 8)  & 0xff);
103 |         p.push((bitLenHi >>> 0)  & 0xff);
104 |         p.push((bitLenLo >>> 24) & 0xff);
105 |         p.push((bitLenLo >>> 16) & 0xff);
106 |         p.push((bitLenLo >>> 8)  & 0xff);
107 |         p.push((bitLenLo >>> 0)  & 0xff);
108 | 
109 |         blocks(p);
110 | 
111 |         return [
112 |             (h0 >>> 24) & 0xff, (h0 >>> 16) & 0xff, (h0 >>> 8) & 0xff, (h0 >>> 0) & 0xff,
113 |             (h1 >>> 24) & 0xff, (h1 >>> 16) & 0xff, (h1 >>> 8) & 0xff, (h1 >>> 0) & 0xff,
114 |             (h2 >>> 24) & 0xff, (h2 >>> 16) & 0xff, (h2 >>> 8) & 0xff, (h2 >>> 0) & 0xff,
115 |             (h3 >>> 24) & 0xff, (h3 >>> 16) & 0xff, (h3 >>> 8) & 0xff, (h3 >>> 0) & 0xff,
116 |             (h4 >>> 24) & 0xff, (h4 >>> 16) & 0xff, (h4 >>> 8) & 0xff, (h4 >>> 0) & 0xff,
117 |             (h5 >>> 24) & 0xff, (h5 >>> 16) & 0xff, (h5 >>> 8) & 0xff, (h5 >>> 0) & 0xff,
118 |             (h6 >>> 24) & 0xff, (h6 >>> 16) & 0xff, (h6 >>> 8) & 0xff, (h6 >>> 0) & 0xff,
119 |             (h7 >>> 24) & 0xff, (h7 >>> 16) & 0xff, (h7 >>> 8) & 0xff, (h7 >>> 0) & 0xff
120 |         ];
121 |     }
122 | 
123 |     function PBKDF2_HMAC_SHA256_OneIter(password, salt, dkLen) {
124 |         // compress password if it's longer than hash block length
125 |         password = (password.length <= 64) ? password : SHA256(password);
126 | 
127 |         const innerLen = 64 + salt.length + 4;
128 |         const inner = new Array(innerLen);
129 |         const outerKey = new Array(64);
130 | 
131 |         let i;
132 |         let dk = [];
133 | 
134 |         // inner = (password ^ ipad) || salt || counter
135 |         for (i = 0; i < 64; i++) { inner[i] = 0x36; }
136 |         for (i = 0; i < password.length; i++) { inner[i] ^= password[i]; }
137 |         for (i = 0; i < salt.length; i++) { inner[64 + i] = salt[i]; }
138 |         for (i = innerLen - 4; i < innerLen; i++) { inner[i] = 0; }
139 | 
140 |         // outerKey = password ^ opad
141 |         for (i = 0; i < 64; i++) outerKey[i] = 0x5c;
142 |         for (i = 0; i < password.length; i++) outerKey[i] ^= password[i];
143 | 
144 |         // increments counter inside inner
145 |         function incrementCounter() {
146 |             for (let i = innerLen - 1; i >= innerLen - 4; i--) {
147 |                 inner[i]++;
148 |                 if (inner[i] <= 0xff) return;
149 |                 inner[i] = 0;
150 |             }
151 |         }
152 | 
153 |         // output blocks = SHA256(outerKey || SHA256(inner)) ...
154 |         while (dkLen >= 32) {
155 |             incrementCounter();
156 |             dk = dk.concat(SHA256(outerKey.concat(SHA256(inner))));
157 |             dkLen -= 32;
158 |         }
159 |         if (dkLen > 0) {
160 |             incrementCounter();
161 |             dk = dk.concat(SHA256(outerKey.concat(SHA256(inner))).slice(0, dkLen));
162 |         }
163 | 
164 |         return dk;
165 |     }
166 | 
167 |     // The following is an adaptation of scryptsy
168 |     // See: https://www.npmjs.com/package/scryptsy
169 |     function blockmix_salsa8(BY, Yi, r, x, _X) {
170 |         let i;
171 | 
172 |         arraycopy(BY, (2 * r - 1) * 16, _X, 0, 16);
173 |         for (i = 0; i < 2 * r; i++) {
174 |             blockxor(BY, i * 16, _X, 16);
175 |             salsa20_8(_X, x);
176 |             arraycopy(_X, 0, BY, Yi + (i * 16), 16);
177 |         }
178 | 
179 |         for (i = 0; i < r; i++) {
180 |             arraycopy(BY, Yi + (i * 2) * 16, BY, (i * 16), 16);
181 |         }
182 | 
183 |         for (i = 0; i < r; i++) {
184 |             arraycopy(BY, Yi + (i * 2 + 1) * 16, BY, (i + r) * 16, 16);
185 |         }
186 |     }
187 | 
188 |     function R(a, b) {
189 |         return (a << b) | (a >>> (32 - b));
190 |     }
191 | 
192 |     function salsa20_8(B, x) {
193 |         arraycopy(B, 0, x, 0, 16);
194 | 
195 |         for (let i = 8; i > 0; i -= 2) {
196 |             x[ 4] ^= R(x[ 0] + x[12], 7);
197 |             x[ 8] ^= R(x[ 4] + x[ 0], 9);
198 |             x[12] ^= R(x[ 8] + x[ 4], 13);
199 |             x[ 0] ^= R(x[12] + x[ 8], 18);
200 |             x[ 9] ^= R(x[ 5] + x[ 1], 7);
201 |             x[13] ^= R(x[ 9] + x[ 5], 9);
202 |             x[ 1] ^= R(x[13] + x[ 9], 13);
203 |             x[ 5] ^= R(x[ 1] + x[13], 18);
204 |             x[14] ^= R(x[10] + x[ 6], 7);
205 |             x[ 2] ^= R(x[14] + x[10], 9);
206 |             x[ 6] ^= R(x[ 2] + x[14], 13);
207 |             x[10] ^= R(x[ 6] + x[ 2], 18);
208 |             x[ 3] ^= R(x[15] + x[11], 7);
209 |             x[ 7] ^= R(x[ 3] + x[15], 9);
210 |             x[11] ^= R(x[ 7] + x[ 3], 13);
211 |             x[15] ^= R(x[11] + x[ 7], 18);
212 |             x[ 1] ^= R(x[ 0] + x[ 3], 7);
213 |             x[ 2] ^= R(x[ 1] + x[ 0], 9);
214 |             x[ 3] ^= R(x[ 2] + x[ 1], 13);
215 |             x[ 0] ^= R(x[ 3] + x[ 2], 18);
216 |             x[ 6] ^= R(x[ 5] + x[ 4], 7);
217 |             x[ 7] ^= R(x[ 6] + x[ 5], 9);
218 |             x[ 4] ^= R(x[ 7] + x[ 6], 13);
219 |             x[ 5] ^= R(x[ 4] + x[ 7], 18);
220 |             x[11] ^= R(x[10] + x[ 9], 7);
221 |             x[ 8] ^= R(x[11] + x[10], 9);
222 |             x[ 9] ^= R(x[ 8] + x[11], 13);
223 |             x[10] ^= R(x[ 9] + x[ 8], 18);
224 |             x[12] ^= R(x[15] + x[14], 7);
225 |             x[13] ^= R(x[12] + x[15], 9);
226 |             x[14] ^= R(x[13] + x[12], 13);
227 |             x[15] ^= R(x[14] + x[13], 18);
228 |         }
229 | 
230 |         for (let i = 0; i < 16; ++i) {
231 |             B[i] += x[i];
232 |         }
233 |     }
234 | 
235 |     // naive approach... going back to loop unrolling may yield additional performance
236 |     function blockxor(S, Si, D, len) {
237 |         for (let i = 0; i < len; i++) {
238 |             D[i] ^= S[Si + i]
239 |         }
240 |     }
241 | 
242 |     function arraycopy(src, srcPos, dest, destPos, length) {
243 |         while (length--) {
244 |             dest[destPos++] = src[srcPos++];
245 |         }
246 |     }
247 | 
248 |     function checkBufferish(o) {
249 |         if (!o || typeof(o.length) !== 'number') { return false; }
250 | 
251 |         for (let i = 0; i < o.length; i++) {
252 |             const v = o[i];
253 |             if (typeof(v) !== 'number' || v % 1 || v < 0 || v >= 256) {
254 |                 return false;
255 |             }
256 |         }
257 | 
258 |         return true;
259 |     }
260 | 
261 |     function ensureInteger(value, name) {
262 |         if (typeof(value) !== "number" || (value % 1)) { throw new Error('invalid ' + name); }
263 |         return value;
264 |     }
265 | 
266 |     // N = Cpu cost, r = Memory cost, p = parallelization cost
267 |     // callback(error, progress, key)
268 |     function _scrypt(password, salt, N, r, p, dkLen, callback) {
269 | 
270 |         N = ensureInteger(N, 'N');
271 |         r = ensureInteger(r, 'r');
272 |         p = ensureInteger(p, 'p');
273 | 
274 |         dkLen = ensureInteger(dkLen, 'dkLen');
275 | 
276 |         if (N === 0 || (N & (N - 1)) !== 0) { throw new Error('N must be power of 2'); }
277 | 
278 |         if (N > MAX_VALUE / 128 / r) { throw new Error('N too large'); }
279 |         if (r > MAX_VALUE / 128 / p) { throw new Error('r too large'); }
280 | 
281 |         if (!checkBufferish(password)) {
282 |             throw new Error('password must be an array or buffer');
283 |         }
284 |         password = Array.prototype.slice.call(password);
285 | 
286 |         if (!checkBufferish(salt)) {
287 |             throw new Error('salt must be an array or buffer');
288 |         }
289 |         salt = Array.prototype.slice.call(salt);
290 | 
291 |         let b = PBKDF2_HMAC_SHA256_OneIter(password, salt, p * 128 * r);
292 |         const B = new Uint32Array(p * 32 * r)
293 |         for (let i = 0; i < B.length; i++) {
294 |             const j = i * 4;
295 |             B[i] = ((b[j + 3] & 0xff) << 24) |
296 |                    ((b[j + 2] & 0xff) << 16) |
297 |                    ((b[j + 1] & 0xff) << 8) |
298 |                    ((b[j + 0] & 0xff) << 0);
299 |         }
300 | 
301 |         const XY = new Uint32Array(64 * r);
302 |         const V = new Uint32Array(32 * r * N);
303 | 
304 |         const Yi = 32 * r;
305 | 
306 |         // scratch space
307 |         const x = new Uint32Array(16);       // salsa20_8
308 |         const _X = new Uint32Array(16);      // blockmix_salsa8
309 | 
310 |         const totalOps = p * N * 2;
311 |         let currentOp = 0;
312 |         let lastPercent10 = null;
313 | 
314 |         // Set this to true to abandon the scrypt on the next step
315 |         let stop = false;
316 | 
317 |         // State information
318 |         let state = 0;
319 |         let i0 = 0, i1;
320 |         let Bi;
321 | 
322 |         // How many blockmix_salsa8 can we do per step?
323 |         const limit = callback ? parseInt(1000 / r): 0xffffffff;
324 | 
325 |         // Trick from scrypt-async; if there is a setImmediate shim in place, use it
326 |         const nextTick = (typeof(setImmediate) !== 'undefined') ? setImmediate : setTimeout;
327 | 
328 |         // This is really all I changed; making scryptsy a state machine so we occasionally
329 |         // stop and give other evnts on the evnt loop a chance to run. ~RicMoo
330 |         const incrementalSMix = function() {
331 |             if (stop) {
332 |                 return callback(new Error('cancelled'), currentOp / totalOps);
333 |             }
334 | 
335 |             let steps;
336 | 
337 |             switch (state) {
338 |                 case 0:
339 |                     // for (var i = 0; i < p; i++)...
340 |                     Bi = i0 * 32 * r;
341 | 
342 |                     arraycopy(B, Bi, XY, 0, Yi);                       // ROMix - 1
343 | 
344 |                     state = 1;                                         // Move to ROMix 2
345 |                     i1 = 0;
346 | 
347 |                     // Fall through
348 | 
349 |                 case 1:
350 | 
351 |                     // Run up to 1000 steps of the first inner smix loop
352 |                     steps = N - i1;
353 |                     if (steps > limit) { steps = limit; }
354 |                     for (let i = 0; i < steps; i++) {                  // ROMix - 2
355 |                         arraycopy(XY, 0, V, (i1 + i) * Yi, Yi)         // ROMix - 3
356 |                         blockmix_salsa8(XY, Yi, r, x, _X);             // ROMix - 4
357 |                     }
358 | 
359 |                     // for (var i = 0; i < N; i++)
360 |                     i1 += steps;
361 |                     currentOp += steps;
362 | 
363 |                     if (callback) {
364 |                         // Call the callback with the progress (optionally stopping us)
365 |                         const percent10 = parseInt(1000 * currentOp / totalOps);
366 |                         if (percent10 !== lastPercent10) {
367 |                             stop = callback(null, currentOp / totalOps);
368 |                             if (stop) { break; }
369 |                             lastPercent10 = percent10;
370 |                         }
371 |                     }
372 | 
373 |                     if (i1 < N) { break; }
374 | 
375 |                     i1 = 0;                                          // Move to ROMix 6
376 |                     state = 2;
377 | 
378 |                     // Fall through
379 | 
380 |                 case 2:
381 | 
382 |                     // Run up to 1000 steps of the second inner smix loop
383 |                     steps = N - i1;
384 |                     if (steps > limit) { steps = limit; }
385 |                     for (let i = 0; i < steps; i++) {                // ROMix - 6
386 |                         const offset = (2 * r - 1) * 16;             // ROMix - 7
387 |                         const j = XY[offset] & (N - 1);
388 |                         blockxor(V, j * Yi, XY, Yi);                 // ROMix - 8 (inner)
389 |                         blockmix_salsa8(XY, Yi, r, x, _X);           // ROMix - 9 (outer)
390 |                     }
391 | 
392 |                     // for (var i = 0; i < N; i++)...
393 |                     i1 += steps;
394 |                     currentOp += steps;
395 | 
396 |                     // Call the callback with the progress (optionally stopping us)
397 |                     if (callback) {
398 |                         const percent10 = parseInt(1000 * currentOp / totalOps);
399 |                         if (percent10 !== lastPercent10) {
400 |                             stop = callback(null, currentOp / totalOps);
401 |                             if (stop) { break; }
402 |                             lastPercent10 = percent10;
403 |                         }
404 |                     }
405 | 
406 |                     if (i1 < N) { break; }
407 | 
408 |                     arraycopy(XY, 0, B, Bi, Yi);                     // ROMix - 10
409 | 
410 |                     // for (var i = 0; i < p; i++)...
411 |                     i0++;
412 |                     if (i0 < p) {
413 |                         state = 0;
414 |                         break;
415 |                     }
416 | 
417 |                     b = [];
418 |                     for (let i = 0; i < B.length; i++) {
419 |                         b.push((B[i] >>  0) & 0xff);
420 |                         b.push((B[i] >>  8) & 0xff);
421 |                         b.push((B[i] >> 16) & 0xff);
422 |                         b.push((B[i] >> 24) & 0xff);
423 |                     }
424 | 
425 |                     const derivedKey = PBKDF2_HMAC_SHA256_OneIter(password, b, dkLen);
426 | 
427 |                     // Send the result to the callback
428 |                     if (callback) { callback(null, 1.0, derivedKey); }
429 | 
430 |                     // Done; don't break (which would reschedule)
431 |                     return derivedKey;
432 |             }
433 | 
434 |             // Schedule the next steps
435 |             if (callback) { nextTick(incrementalSMix); }
436 |         }
437 | 
438 |         // Run the smix state machine until completion
439 |         if (!callback) {
440 |             while (true) {
441 |                 const derivedKey = incrementalSMix();
442 |                 if (derivedKey != undefined) { return derivedKey; }
443 |             }
444 |         }
445 | 
446 |         // Bootstrap the async incremental smix
447 |         incrementalSMix();
448 |     }
449 | 
450 |     const lib = {
451 |         scrypt: function(password, salt, N, r, p, dkLen, progressCallback) {
452 |             return new Promise(function(resolve, reject) {
453 |                 let lastProgress = 0;
454 |                 if (progressCallback) { progressCallback(0); }
455 |                 _scrypt(password, salt, N, r, p, dkLen, function(error, progress, key) {
456 |                     if (error) {
457 |                         reject(error);
458 |                     } else if (key) {
459 |                         if (progressCallback && lastProgress !== 1) {
460 |                             progressCallback(1);
461 |                         }
462 |                         resolve(new Uint8Array(key));
463 |                     } else if (progressCallback && progress !== lastProgress) {
464 |                         lastProgress = progress;
465 |                         return progressCallback(progress);
466 |                     }
467 |                 });
468 |             });
469 |         },
470 |         syncScrypt: function(password, salt, N, r, p, dkLen) {
471 |             return new Uint8Array(_scrypt(password, salt, N, r, p, dkLen));
472 |         }
473 |     };
474 | 
475 |     // node.js
476 |     if (typeof(exports) !== 'undefined') {
477 |        module.exports = lib;
478 | 
479 |     // RequireJS/AMD
480 |     // http://www.requirejs.org/docs/api.html
481 |     // https://github.com/amdjs/amdjs-api/wiki/AMD
482 |     } else if (typeof(define) === 'function' && define.amd) {
483 |         define(lib);
484 | 
485 |     // Web Browsers
486 |     } else if (root) {
487 | 
488 |         // If there was an existing library "scrypt", make sure it is still available
489 |         if (root.scrypt) {
490 |             root._scrypt = root.scrypt;
491 |         }
492 | 
493 |         root.scrypt = lib;
494 |     }
495 | 
496 | })(this);
497 | 
498 |   </script>
499 |   <script>/*!
500 |     * Vue.js v2.6.11
501 |     * (c) 2014-2019 Evan You
502 |     * Released under the MIT License.
503 |     */
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505 | 
506 | </head>
507 | 
508 | <body>
509 |   <div id="app">
510 |     <label for="istring">Introduzca la cadena a generar la clave</label>
511 |     <input id="istring" type="text" v-model.lazy.trim="sourceString"/>
512 |     <label for="iderived">Clave derivada</label>
513 |     <input id="iderived" type="text" aria-live="assertive" v-model.lazy="derivedKey"/>
514 | 
515 |     <h1>Parámetros de ajuste para el algoritmo scrypt</h1>
516 |     <label for="salt">salt</label>
517 |     <input id="salt" type="text" v-model.lazy.trim="salt"/>
518 |     <label for="n">N</label>
519 |     <input id="n" type="text" v-model.lazy.number="n"/>
520 |     <label for="r">R</label>
521 |     <input id="r" type="text" v-model.lazy.number="r"/>
522 |     <label for="p">P</label>
523 |     <input id="p" type="text" v-model.lazy.number="p"/>
524 |     <label for="dklen">Longitud de la clave derivada</label>
525 |     <input id="dklen" type="text" v-model.lazy.number="dkLen"/>
526 |   </div>
527 | </body>
528 | </html>
529 | 
530 | <script>
531 | function stringToBinary(s) {
532 |   if (!s || s == "") return null;
533 |   let i=s.length, r = new Int8Array(i);
534 |   while(i--) r[i] = s.charCodeAt(i);
535 |   return r;
536 | }
537 | 
538 | 
539 |   var app = new Vue({
540 |     el: '#app',
541 |     data: {
542 |       sourceString: "",
543 |       derivedKey: "",
544 |       salt: 'c8m.qp+xv3*rhfUz',
545 |       n: 128,
546 |       r: 8,
547 |       p: 1,
548 |       dkLen: 64
549 |     },
550 |     watch: {
551 |       sourceString: function (val) {
552 |         if(!val) {
553 |           this.derivedKey = "";
554 |           return;
555 |         }
556 |         let s = stringToBinary(val);
557 |         let salt = stringToBinary(this.salt);
558 |         scrypt.scrypt(s, salt, this.n, this.r, this.p, this.dkLen).then(key =>{
559 |           this.derivedKey= btoa(String.fromCharCode.apply(null, key));
560 |         });
561 |       }
562 |     }
563 |   });
564 | </script>


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