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How to use CipherTransform method in wpt

Best JavaScript code snippet using wpt

parser.js

Source:parser.js

1/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */2/* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */3/* Copyright 2012 Mozilla Foundation4 *5 * Licensed under the Apache License, Version 2.0 (the "License");6 * you may not use this file except in compliance with the License.7 * You may obtain a copy of the License at8 *9 *     http://www.apache.org/licenses/LICENSE-2.010 *11 * Unless required by applicable law or agreed to in writing, software12 * distributed under the License is distributed on an "AS IS" BASIS,13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.14 * See the License for the specific language governing permissions and15 * limitations under the License.16 */17/* globals Ascii85Stream, AsciiHexStream, CCITTFaxStream, Cmd, Dict, error,18           FlateStream, isArray, isCmd, isDict, isInt, isName, isNum, isRef,19           isString, Jbig2Stream, JpegStream, JpxStream, LZWStream, Name,20           NullStream, PredictorStream, Ref, RunLengthStream, warn */21'use strict';22var EOF = {};23function isEOF(v) {24  return v == EOF;25}26var Parser = (function ParserClosure() {27  function Parser(lexer, allowStreams, xref) {28    this.lexer = lexer;29    this.allowStreams = allowStreams;30    this.xref = xref;31    this.refill();32  }33  Parser.prototype = {34    refill: function Parser_refill() {35      this.buf1 = this.lexer.getObj();36      this.buf2 = this.lexer.getObj();37    },38    shift: function Parser_shift() {39      if (isCmd(this.buf2, 'ID')) {40        this.buf1 = this.buf2;41        this.buf2 = null;42        // skip byte after ID43        this.lexer.skip();44      } else {45        this.buf1 = this.buf2;46        this.buf2 = this.lexer.getObj();47      }48    },49    getObj: function Parser_getObj(cipherTransform) {50      if (isCmd(this.buf1, 'BI')) { // inline image51        this.shift();52        return this.makeInlineImage(cipherTransform);53      }54      if (isCmd(this.buf1, '[')) { // array55        this.shift();56        var array = [];57        while (!isCmd(this.buf1, ']') && !isEOF(this.buf1))58          array.push(this.getObj());59        if (isEOF(this.buf1))60          error('End of file inside array');61        this.shift();62        return array;63      }64      if (isCmd(this.buf1, '<<')) { // dictionary or stream65        this.shift();66        var dict = new Dict(this.xref);67        while (!isCmd(this.buf1, '>>') && !isEOF(this.buf1)) {68          if (!isName(this.buf1))69            error('Dictionary key must be a name object');70          var key = this.buf1.name;71          this.shift();72          if (isEOF(this.buf1))73            break;74          dict.set(key, this.getObj(cipherTransform));75        }76        if (isEOF(this.buf1))77          error('End of file inside dictionary');78        // stream objects are not allowed inside content streams or79        // object streams80        if (isCmd(this.buf2, 'stream')) {81          return this.allowStreams ?82            this.makeStream(dict, cipherTransform) : dict;83        }84        this.shift();85        return dict;86      }87      if (isInt(this.buf1)) { // indirect reference or integer88        var num = this.buf1;89        this.shift();90        if (isInt(this.buf1) && isCmd(this.buf2, 'R')) {91          var ref = new Ref(num, this.buf1);92          this.shift();93          this.shift();94          return ref;95        }96        return num;97      }98      if (isString(this.buf1)) { // string99        var str = this.buf1;100        this.shift();101        if (cipherTransform)102          str = cipherTransform.decryptString(str);103        return str;104      }105      // simple object106      var obj = this.buf1;107      this.shift();108      return obj;109    },110    makeInlineImage: function Parser_makeInlineImage(cipherTransform) {111      var lexer = this.lexer;112      var stream = lexer.stream;113      // parse dictionary114      var dict = new Dict();115      while (!isCmd(this.buf1, 'ID') && !isEOF(this.buf1)) {116        if (!isName(this.buf1))117          error('Dictionary key must be a name object');118        var key = this.buf1.name;119        this.shift();120        if (isEOF(this.buf1))121          break;122        dict.set(key, this.getObj(cipherTransform));123      }124      // parse image stream125      var startPos = stream.pos;126      // searching for the /EI\s/127      var state = 0, ch;128      while (state != 4 &&129             (ch = stream.getByte()) !== null && ch !== undefined) {130        switch (ch) {131          case 0x20:132          case 0x0D:133          case 0x0A:134            state = state === 3 ? 4 : 0;135            break;136          case 0x45:137            state = 2;138            break;139          case 0x49:140            state = state === 2 ? 3 : 0;141            break;142          default:143            state = 0;144            break;145        }146      }147      var length = (stream.pos - 4) - startPos;148      var imageStream = stream.makeSubStream(startPos, length, dict);149      if (cipherTransform)150        imageStream = cipherTransform.createStream(imageStream);151      imageStream = this.filter(imageStream, dict, length);152      imageStream.parameters = dict;153      this.buf2 = Cmd.get('EI');154      this.shift();155      return imageStream;156    },157    fetchIfRef: function Parser_fetchIfRef(obj) {158      // not relying on the xref.fetchIfRef -- xref might not be set159      return isRef(obj) ? this.xref.fetch(obj) : obj;160    },161    makeStream: function Parser_makeStream(dict, cipherTransform) {162      var lexer = this.lexer;163      var stream = lexer.stream;164      // get stream start position165      lexer.skipToNextLine();166      var pos = stream.pos;167      // get length168      var length = this.fetchIfRef(dict.get('Length'));169      if (!isInt(length))170        error('Bad ' + length + ' attribute in stream');171      // skip over the stream data172      stream.pos = pos + length;173      this.shift(); // '>>'174      this.shift(); // 'stream'175      if (!isCmd(this.buf1, 'endstream'))176        error('Missing endstream');177      this.shift();178      stream = stream.makeSubStream(pos, length, dict);179      if (cipherTransform)180        stream = cipherTransform.createStream(stream);181      stream = this.filter(stream, dict, length);182      stream.parameters = dict;183      return stream;184    },185    filter: function Parser_filter(stream, dict, length) {186      var filter = this.fetchIfRef(dict.get('Filter', 'F'));187      var params = this.fetchIfRef(dict.get('DecodeParms', 'DP'));188      if (isName(filter))189        return this.makeFilter(stream, filter.name, length, params);190      if (isArray(filter)) {191        var filterArray = filter;192        var paramsArray = params;193        for (var i = 0, ii = filterArray.length; i < ii; ++i) {194          filter = filterArray[i];195          if (!isName(filter))196            error('Bad filter name: ' + filter);197          params = null;198          if (isArray(paramsArray) && (i in paramsArray))199            params = paramsArray[i];200          stream = this.makeFilter(stream, filter.name, length, params);201          // after the first stream the length variable is invalid202          length = null;203        }204      }205      return stream;206    },207    makeFilter: function Parser_makeFilter(stream, name, length, params) {208      if (stream.dict.get('Length') === 0) {209        return new NullStream(stream);210      }211      if (name == 'FlateDecode' || name == 'Fl') {212        if (params) {213          return new PredictorStream(new FlateStream(stream), params);214        }215        return new FlateStream(stream);216      }217      if (name == 'LZWDecode' || name == 'LZW') {218        var earlyChange = 1;219        if (params) {220          if (params.has('EarlyChange'))221            earlyChange = params.get('EarlyChange');222          return new PredictorStream(223            new LZWStream(stream, earlyChange), params);224        }225        return new LZWStream(stream, earlyChange);226      }227      if (name == 'DCTDecode' || name == 'DCT') {228        var bytes = stream.getBytes(length);229        return new JpegStream(bytes, stream.dict, this.xref);230      }231      if (name == 'JPXDecode' || name == 'JPX') {232        var bytes = stream.getBytes(length);233        return new JpxStream(bytes, stream.dict);234      }235      if (name == 'ASCII85Decode' || name == 'A85') {236        return new Ascii85Stream(stream);237      }238      if (name == 'ASCIIHexDecode' || name == 'AHx') {239        return new AsciiHexStream(stream);240      }241      if (name == 'CCITTFaxDecode' || name == 'CCF') {242        return new CCITTFaxStream(stream, params);243      }244      if (name == 'RunLengthDecode' || name == 'RL') {245        return new RunLengthStream(stream);246      }247      if (name == 'JBIG2Decode') {248        var bytes = stream.getBytes(length);249        return new Jbig2Stream(bytes, stream.dict);250      }251      warn('filter "' + name + '" not supported yet');252      return stream;253    }254  };255  return Parser;256})();257var Lexer = (function LexerClosure() {258  function Lexer(stream, knownCommands) {259    this.stream = stream;260    // The PDFs might have "glued" commands with other commands, operands or261    // literals, e.g. "q1". The knownCommands is a dictionary of the valid262    // commands and their prefixes. The prefixes are built the following way:263    // if there a command that is a prefix of the other valid command or264    // literal (e.g. 'f' and 'false') the following prefixes must be included,265    // 'fa', 'fal', 'fals'. The prefixes are not needed, if the command has no266    // other commands or literals as a prefix. The knowCommands is optional.267    this.knownCommands = knownCommands;268  }269  Lexer.isSpace = function Lexer_isSpace(ch) {270    return ch == ' ' || ch == '\t' || ch == '\x0d' || ch == '\x0a';271  };272  // A '1' in this array means the character is white space.  A '1' or273  // '2' means the character ends a name or command.274  var specialChars = [275    1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 1, 1, 0, 0,   // 0x276    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,   // 1x277    1, 0, 0, 0, 0, 2, 0, 0, 2, 2, 0, 0, 0, 0, 0, 2,   // 2x278    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 2, 0,   // 3x279    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,   // 4x280    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 2, 0, 0,   // 5x281    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,   // 6x282    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 2, 0, 0,   // 7x283    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,   // 8x284    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,   // 9x285    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,   // ax286    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,   // bx287    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,   // cx288    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,   // dx289    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,   // ex290    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0    // fx291  ];292  function toHexDigit(ch) {293    if (ch >= '0' && ch <= '9')294      return ch.charCodeAt(0) - 48;295    ch = ch.toUpperCase();296    if (ch >= 'A' && ch <= 'F')297      return ch.charCodeAt(0) - 55;298    return -1;299  }300  Lexer.prototype = {301    getNumber: function Lexer_getNumber(ch) {302      var floating = false;303      var str = ch;304      var stream = this.stream;305      while ((ch = stream.lookChar())) {306        if (ch == '.' && !floating) {307          str += ch;308          floating = true;309        } else if (ch == '-') {310          // ignore minus signs in the middle of numbers to match311          // Adobe's behavior312          warn('Badly formated number');313        } else if (ch >= '0' && ch <= '9') {314          str += ch;315        } else if (ch == 'e' || ch == 'E') {316          floating = true;317        } else {318          // the last character doesn't belong to us319          break;320        }321        stream.skip();322      }323      var value = parseFloat(str);324      if (isNaN(value))325        error('Invalid floating point number: ' + value);326      return value;327    },328    getString: function Lexer_getString() {329      var numParen = 1;330      var done = false;331      var str = '';332      var stream = this.stream;333      var ch;334      do {335        ch = stream.getChar();336        switch (ch) {337          case undefined:338            warn('Unterminated string');339            done = true;340            break;341          case '(':342            ++numParen;343            str += ch;344            break;345          case ')':346            if (--numParen === 0) {347              done = true;348            } else {349              str += ch;350            }351            break;352          case '\\':353            ch = stream.getChar();354            switch (ch) {355              case undefined:356                warn('Unterminated string');357                done = true;358                break;359              case 'n':360                str += '\n';361                break;362              case 'r':363                str += '\r';364                break;365              case 't':366                str += '\t';367                break;368              case 'b':369                str += '\b';370                break;371              case 'f':372                str += '\f';373                break;374              case '\\':375              case '(':376              case ')':377                str += ch;378                break;379              case '0': case '1': case '2': case '3':380              case '4': case '5': case '6': case '7':381                var x = ch - '0';382                ch = stream.lookChar();383                if (ch >= '0' && ch <= '7') {384                  stream.skip();385                  x = (x << 3) + (ch - '0');386                  ch = stream.lookChar();387                  if (ch >= '0' && ch <= '7') {388                    stream.skip();389                    x = (x << 3) + (ch - '0');390                  }391                }392                str += String.fromCharCode(x);393                break;394              case '\r':395                ch = stream.lookChar();396                if (ch == '\n')397                  stream.skip();398                break;399              case '\n':400                break;401              default:402                str += ch;403            }404            break;405          default:406            str += ch;407        }408      } while (!done);409      return str;410    },411    getName: function Lexer_getName(ch) {412      var str = '';413      var stream = this.stream;414      while (!!(ch = stream.lookChar()) && !specialChars[ch.charCodeAt(0)]) {415        stream.skip();416        if (ch == '#') {417          ch = stream.lookChar();418          var x = toHexDigit(ch);419          if (x != -1) {420            stream.skip();421            var x2 = toHexDigit(stream.getChar());422            if (x2 == -1)423              error('Illegal digit in hex char in name: ' + x2);424            str += String.fromCharCode((x << 4) | x2);425          } else {426            str += '#';427            str += ch;428          }429        } else {430          str += ch;431        }432      }433      if (str.length > 128)434        error('Warning: name token is longer than allowed by the spec: ' +435              str.length);436      return new Name(str);437    },438    getHexString: function Lexer_getHexString(ch) {439      var str = '';440      var stream = this.stream;441      var isFirstHex = true;442      var firstDigit;443      var secondDigit;444      while (true) {445        ch = stream.getChar();446        if (!ch) {447          warn('Unterminated hex string');448          break;449        } else if (ch === '>') {450          break;451        } else if (specialChars[ch.charCodeAt(0)] === 1) {452          continue;453        } else {454          if (isFirstHex) {455            firstDigit = toHexDigit(ch);456            if (firstDigit === -1) {457              warn('Ignoring invalid character "' + ch + '" in hex string');458              continue;459            }460          } else {461            secondDigit = toHexDigit(ch);462            if (secondDigit === -1) {463              warn('Ignoring invalid character "' + ch + '" in hex string');464              continue;465            }466            str += String.fromCharCode((firstDigit << 4) | secondDigit);467          }468          isFirstHex = !isFirstHex;469        }470      }471      return str;472    },473    getObj: function Lexer_getObj() {474      // skip whitespace and comments475      var comment = false;476      var stream = this.stream;477      var ch;478      while (true) {479        if (!(ch = stream.getChar()))480          return EOF;481        if (comment) {482          if (ch == '\r' || ch == '\n')483            comment = false;484        } else if (ch == '%') {485          comment = true;486        } else if (specialChars[ch.charCodeAt(0)] != 1) {487          break;488        }489      }490      // start reading token491      switch (ch) {492        case '0': case '1': case '2': case '3': case '4':493        case '5': case '6': case '7': case '8': case '9':494        case '+': case '-': case '.':495          return this.getNumber(ch);496        case '(':497          return this.getString();498        case '/':499          return this.getName(ch);500        // array punctuation501        case '[':502        case ']':503          return Cmd.get(ch);504        // hex string or dict punctuation505        case '<':506          ch = stream.lookChar();507          if (ch == '<') {508            // dict punctuation509            stream.skip();510            return Cmd.get('<<');511          }512          return this.getHexString(ch);513        // dict punctuation514        case '>':515          ch = stream.lookChar();516          if (ch == '>') {517            stream.skip();518            return Cmd.get('>>');519          }520          return Cmd.get(ch);521        case '{':522        case '}':523          return Cmd.get(ch);524        // fall through525        case ')':526          error('Illegal character: ' + ch);527      }528      // command529      var str = ch;530      var knownCommands = this.knownCommands;531      var knownCommandFound = knownCommands && (str in knownCommands);532      while (!!(ch = stream.lookChar()) && !specialChars[ch.charCodeAt(0)]) {533        // stop if known command is found and next character does not make534        // the str a command535        if (knownCommandFound && !((str + ch) in knownCommands))536          break;537        stream.skip();538        if (str.length == 128)539          error('Command token too long: ' + str.length);540        str += ch;541        knownCommandFound = knownCommands && (str in knownCommands);542      }543      if (str == 'true')544        return true;545      if (str == 'false')546        return false;547      if (str == 'null')548        return null;549      return Cmd.get(str);550    },551    skipToNextLine: function Lexer_skipToNextLine() {552      var stream = this.stream;553      while (true) {554        var ch = stream.getChar();555        if (!ch || ch == '\n')556          return;557        if (ch == '\r') {558          if ((ch = stream.lookChar()) == '\n')559            stream.skip();560          return;561        }562      }563    },564    skip: function Lexer_skip() {565      this.stream.skip();566    }567  };568  return Lexer;569})();570var Linearization = (function LinearizationClosure() {571  function Linearization(stream) {572    this.parser = new Parser(new Lexer(stream), false, null);573    var obj1 = this.parser.getObj();574    var obj2 = this.parser.getObj();575    var obj3 = this.parser.getObj();576    this.linDict = this.parser.getObj();577    if (isInt(obj1) && isInt(obj2) && isCmd(obj3, 'obj') &&578        isDict(this.linDict)) {579      var obj = this.linDict.get('Linearized');580      if (!(isNum(obj) && obj > 0))581        this.linDict = null;582    }583  }584  Linearization.prototype = {585    getInt: function Linearization_getInt(name) {586      var linDict = this.linDict;587      var obj;588      if (isDict(linDict) &&589          isInt(obj = linDict.get(name)) &&590          obj > 0) {591        return obj;592      }593      error('"' + name + '" field in linearization table is invalid');594    },595    getHint: function Linearization_getHint(index) {596      var linDict = this.linDict;597      var obj1, obj2;598      if (isDict(linDict) &&599          isArray(obj1 = linDict.get('H')) &&600          obj1.length >= 2 &&601          isInt(obj2 = obj1[index]) &&602          obj2 > 0) {603        return obj2;604      }605      error('Hints table in linearization table is invalid: ' + index);606    },607    get length() {608      if (!isDict(this.linDict))609        return 0;610      return this.getInt('L');611    },612    get hintsOffset() {613      return this.getHint(0);614    },615    get hintsLength() {616      return this.getHint(1);617    },618    get hintsOffset2() {619      return this.getHint(2);620    },621    get hintsLenth2() {622      return this.getHint(3);623    },624    get objectNumberFirst() {625      return this.getInt('O');626    },627    get endFirst() {628      return this.getInt('E');629    },630    get numPages() {631      return this.getInt('N');632    },633    get mainXRefEntriesOffset() {634      return this.getInt('T');635    },636    get pageFirst() {637      return this.getInt('P');638    }639  };640  return Linearization;...

Using AI Code Generation

1var crypto = require('crypto');2var fs = require('fs');3var wpt = require('wpt');4var cipher = crypto.createCipher('aes192', 'a password');5var input = fs.createReadStream('test.txt');6var output = fs.createWriteStream('test.txt.enc');7input.pipe(cipher).pipe(output);8var crypto = require('crypto');9var fs = require('fs');10var wpt = require('wpt');11var decipher = crypto.createDecipher('aes192', 'a password');12var input = fs.createReadStream('test.txt.enc');13var output = fs.createWriteStream('test.txt.dec');14input.pipe(decipher).pipe(output);15var crypto = require('crypto');16var fs = require('fs');17var wpt = require('wpt');18var cipher = crypto.createCipher('aes192', 'a password');19var input = fs.createReadStream('test.txt');20var output = fs.createWriteStream('test.txt.enc');21input.pipe(cipher).pipe(output);22var crypto = require('crypto');23var fs = require('fs');24var wpt = require('wpt');25var decipher = crypto.createDecipher('aes192', 'a password');26var input = fs.createReadStream('test.txt.enc');27var output = fs.createWriteStream('test.txt.dec');28input.pipe(decipher).pipe(output);29var crypto = require('crypto');30var fs = require('fs');31var wpt = require('wpt');32var cipher = crypto.createCipher('aes192', 'a password');33var input = fs.createReadStream('test.txt');34var output = fs.createWriteStream('test.txt.enc');35input.pipe(cipher).pipe(output);36var crypto = require('crypto');37var fs = require('fs');38var wpt = require('wpt');39var decipher = crypto.createDecipher('aes192', 'a password');40var input = fs.createReadStream('test.txt.enc');41var output = fs.createWriteStream('test.txt.dec');42input.pipe(decipher).pipe(output);

Using AI Code Generation

1function runTest() {2    var cipher = new CipherTransform();3    var key = cipher.generateKey();4    var iv = cipher.generateIV();5    var encrypted = cipher.encrypt("Hello World", key, iv);6    var decrypted = cipher.decrypt(encrypted, key, iv);7    postMessage(decrypted);8}9Running test.js on the same machine as the server (localhost) works fine:10Running test.js on a remote machine (

Using AI Code Generation

1var test = require('tape');2var wpt = require('webpage');3var page = wpt.create();4page.open(url, function(status){5    test('status is success', function(t){6        t.equal(status, 'success');7        t.end();8    });9    test('page title is google', function(t){10        var title = page.evaluate(function(){11            return document.title;12        });13        t.equal(title, 'Google');14        t.end();15    });16    test('page title is google', function(t){17        var title = page.evaluate(function(){18            return document.title;19        });20        t.equal(title, 'Google');21        t.end();22    });23    test('page title is google', function(t){24        var title = page.evaluate(function(){25            return document.title;26        });27        t.equal(title, 'Google');28        t.end();29    });30    test('page title is google', function(t){31        var title = page.evaluate(function(){32            return document.title;33        });34        t.equal(title, 'Google');35        t.end();36    });37    test('page title is google', function(t){38        var title = page.evaluate(function(){39            return document.title;40        });41        t.equal(title, 'Google');42        t.end();43    });44    test('page title is google', function(t){45        var title = page.evaluate(function(){46            return document.title;47        });48        t.equal(title, 'Google');49        t.end();50    });51    test('page title is google', function(t){52        var title = page.evaluate(function(){53            return document.title;54        });55        t.equal(title, 'Google');56        t.end();57    });58    test('page title is google', function(t){59        var title = page.evaluate(function(){60            return document.title;61        });62        t.equal(title, 'Google');63        t.end();64    });65    test('page title is google', function(t){66        var title = page.evaluate(function(){67            return document.title;68        });69        t.equal(title, 'Google');70        t.end();71    });72    test('page title is google', function(t){73        var title = page.evaluate(function(){74            return document.title;75        });76        t.equal(title, 'Google');77        t.end();78    });79    test('page title is google', function(t){80        var title = page.evaluate(function(){81            return document.title;82        });83        t.equal(title, 'Google');

Using AI Code Generation

1var testString = "This is a test";2var passphrase = "password";3var encryptedString = CipherTransform(testString, passphrase, true);4var decryptedString = CipherTransform(encryptedString, passphrase, false);5WScript.Echo("Original string: " + testString);6WScript.Echo("Encrypted string: " + encryptedString);7WScript.Echo("Decrypted string: " + decryptedString);

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