Fall2020.Day11.Encryption/frequency.html at master · CS3550/Fall2020.Day11.Encryption · GitHub

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<!doctype html>
<html>

<head>
  <title>Encryption</title>
  <style>

  </style>
  <link href='https://fonts.googleapis.com/css?family=Roboto:300,400,500,700|Material+Icons' rel="stylesheet">
  <link href="https://cdn.jsdelivr.net/npm/vuetify/dist/vuetify.min.css" rel="stylesheet">
  <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no, minimal-ui">
</head>

<body>

  <div id="app">
    <template>
      <v-app id="inspire">


        <v-content>
          <v-container fluid fill-height>
            <v-layout justify-center>
              <v-flex xs12 md8 lg6 class="text-xs-center">
                <div class="display-3 my-5"> Frequency Analysis</div>

                <div class="white pa-5 title font-weight-light">
                  <div class="display-1 font-weight-thin">Insert plain text or <v-btn class="" id="convertButton"
                      @click="longPlainText()">Long Plain Text</v-btn>
                  </div>

                  <div>
                    <v-textarea outline single-line class="pa-2" type="text" id="plainText" v-model="startText" @keyup="update()"></v-textarea>
                  </div>

                  <div class="headline font-weight-thin pa-3">Plain text letter frequency</div>
                  <div class="px-5 pl-2">
                    <svg height="100" width="100%" id="plain">
                      <g transform="translate(0, 0)">
                        <rect :x="startingX(index)" y="0" width="3.8%" :height="f * 100" style="fill:blue;stroke:pink;stroke-width:1;"
                          v-for="(f, index) in frequencyPlain()" />
                      </g>
                    </svg>
                  </div>

                  <div class="display-1 font-weight-thin">Insert key or <v-btn class="" id="convertButton" @click="oneTimePad()">One
                      Time Pad</v-btn>
                  </div>
                  <div class="pa-3">
                    <v-text-field outline single-line class="px-5" type="text" id="keyString" v-model="uncleanKeyString"
                      @keyup="update()"></v-text-field>
                  </div>


                  <div class="headline font-weight-thin pa-2">Cipher text</div>
                  <div>
                    <p id="encryptedCharacters" class="headline text-truncate">{{encryptedCharacters}}</p>
                  </div>
                  <div class="headline font-weight-thin pa-2">Cipher text letter frequency</div>
                  <div class="px-5 pl-2">
                    <svg height="100" width="100%">
                      <g transform="translate(0, 0)">
                        <rect :x="startingX(index)" y="0" width="3.8%" :height="f * 100" style="fill:blue;stroke:pink;stroke-width:1;"
                          v-for="(f, index) in frequencyCipher()" />
                      </g>
                    </svg>
                  </div>

                  <div class="display-1 font-weight-thin">Key length guess </div>
                  <div class="pa-3">
                    <v-slider min=1 thumb-label="always" v-model="lengthGuess"></v-text-field>
                  </div>

                  <div class="headline font-weight-thin pa-2">Cipher text frequency at that length</div>
                  <div class="px-5 pl-2">
                    <svg height="100" width="100%">
                      <g transform="translate(0, 0)">
                        <rect :x="startingX(index)" y="0" width="3.8%" :height="f * 100" style="fill:blue;stroke:pink;stroke-width:1;"
                          v-for="(f, index) in frequencyGuess()" />
                      </g>
                    </svg>
                  </div>


                </div>
              </v-flex>
            </v-layout>
          </v-container>
        </v-content>
        <v-footer color="indigo" app>
          <span class="white--text">&copy; 2018</span>
        </v-footer>
      </v-app>
    </template>
  </div>

  <script src="https://code.jquery.com/jquery-3.3.1.min.js"></script>
  <script src='https://unpkg.com/vue'></script>
  <script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.4/lodash.min.js'></script>
  <script src="https://cdn.jsdelivr.net/npm/vuetify/dist/vuetify.js"></script>

  <script>


    var base = "a".charCodeAt(0);

    var app = new Vue({
      el: '#app',
      vuetify: new Vuetify(),
      data: {
        drawer: null,
        source: "",
        rows: [],
        startText: "Starting Off Text",
        endText: "",
        uncleanKeyString: "d",
        keyString: "",
        keyArray: [],
        numeric: [],
        encryptedNumbers: [],
        encryptedCharacters: "",
        cleanText: "",
        lengthGuess: 1,
      },
      computed: {

      },
      methods: {
        startingX(c) {
          let baseWidth = ($("#plain").width()) / 26;
          return baseWidth * c;
        },
        frequencyPlain() {
          let array = _.groupBy(this.numeric);

          for (let i = 0; i < 26; i++) {
            if (!array[i]) {
              array[i] = [];
            }
          }
          let lengths = _.map(array, i => i.length);
          let m = Math.max.apply(null, lengths);
          let toReturn = [];
          for (let i = 0; i < 26; i++) {
            toReturn.push(lengths[i] / m);
          }
          return toReturn;
        },
        frequencyCipher() {
          let array = _.groupBy(this.encryptedNumbers);

          for (let i = 0; i < 26; i++) {
            if (!array[i]) {
              array[i] = [];
            }
          }
          let lengths = _.map(array, i => i.length);
          let m = Math.max.apply(null, lengths);
          let toReturn = [];
          for (let i = 0; i < 26; i++) {
            toReturn.push(lengths[i] / m);
          }

          return toReturn;
        },
        frequencyGuess() {
          let guessArray = [];
          for(let i = 0; i < this.encryptedNumbers.length; i+= app.lengthGuess)
          {
            guessArray.push(this.encryptedNumbers[i]);
          }
          let array = _.groupBy(guessArray);

          for (let i = 0; i < 26; i++) {
            if (!array[i]) {
              array[i] = [];
            }
          }
          let lengths = _.map(array, i => i.length);
          let m = Math.max.apply(null, lengths);
          let toReturn = [];
          for (let i = 0; i < 26; i++) {
            toReturn.push(lengths[i] / m);
          }

          return toReturn;
        },
        update : _.debounce(()=> {
          app.cleanText = "";
          app.keyString = "";
          app.numeric = [];
          app.keyArray = [];
          app.encryptedNumbers = [];
          app.encryptedCharacters = [];

          for (c of app.startText) {
            var char = c.toLowerCase();
            if (/[a-z]/.test(char)) {
              app.cleanText += char;
            }
          }

          for (c of app.uncleanKeyString) {
            var char = c.toLowerCase();
            if (/[a-z]/.test(char)) {
              app.keyString += char;
            }
          }


          for (c of app.cleanText) {
            var code = c.charCodeAt(0) - base;
            app.numeric.push(code);
          }

          for (c of app.keyString) {
            var code = c.charCodeAt(0) - base;
            app.keyArray.push(code);
          }


          for (var i = 0, j = 0; i < app.numeric.length; i++) {
            app.encryptedNumbers.push((app.numeric[i] + app.keyArray[j]) % 26)

            j++;
            j %= app.keyArray.length;
          }


          app.encryptedNumbers.forEach(i => app.encryptedCharacters += String.fromCharCode(i + base));

        }, 100),
        oneTimePad() {
          app.uncleanKeyString = "";
          for (let i = 0; i < 2000; i++) {
            app.uncleanKeyString += String.fromCharCode(base + Math.random() * 26);
          }
          app.update();
        },
        longPlainText() {
          app.startText =
            "The unanimous Declaration of the thirteen united States of America, When in the Course of human events, it becomes necessary for one people to dissolve the political bands which have connected them with another, and to assume among the powers of the earth, the separate and equal station to which the Laws of Nature and of Nature's God entitle them, a decent respect to the opinions of mankind requires that they should declare the causes which impel them to the separation." +
            "We hold these truths to be self-evident, that all men are created equal, that they are endowed by their Creator with certain unalienable Rights, that among these are Life, Liberty and the pursuit of Happiness.--That to secure these rights, Governments are instituted among Men, deriving their just powers from the consent of the governed, --That whenever any Form of Government becomes destructive of these ends, it is the Right of the People to alter or to abolish it, and to institute new Government, laying its foundation on such principles and organizing its powers in such form, as to them shall seem most likely to effect their Safety and Happiness. Prudence, indeed, will dictate that Governments long established should not be changed for light and transient causes; and accordingly all experience hath shewn, that mankind are more disposed to suffer, while evils are sufferable, than to right themselves by abolishing the forms to which they are accustomed. But when a long train of abuses and usurpations, pursuing invariably the same Object evinces a design to reduce them under absolute Despotism, it is their right, it is their duty, to throw off such Government, and to provide new Guards for their future security.--Such has been the patient sufferance of these Colonies; and such is now the necessity which constrains them to alter their former Systems of Government. The history of the present King of Great Britain is a history of repeated injuries and usurpations, all having in direct object the establishment of an absolute Tyranny over these States. To prove this, let Facts be submitted to a candid world.";
          app.update();
        },

      },
    });

  </script>

  <script>

    app.update();
  </script>
</body>

</html>