aboutsummaryrefslogtreecommitdiff
path: root/includes/js/dojox/_sql
diff options
context:
space:
mode:
Diffstat (limited to 'includes/js/dojox/_sql')
-rw-r--r--includes/js/dojox/_sql/LICENSE9
-rw-r--r--includes/js/dojox/_sql/_crypto.js443
-rw-r--r--includes/js/dojox/_sql/common.js538
-rw-r--r--includes/js/dojox/_sql/demos/customers/customers.html292
4 files changed, 1282 insertions, 0 deletions
diff --git a/includes/js/dojox/_sql/LICENSE b/includes/js/dojox/_sql/LICENSE
new file mode 100644
index 0000000..5c277ec
--- /dev/null
+++ b/includes/js/dojox/_sql/LICENSE
@@ -0,0 +1,9 @@
+License Disclaimer:
+
+All contents of this directory are Copyright (c) the Dojo Foundation, with the
+following exceptions:
+-------------------------------------------------------------------------------
+
+_crypto.js - internally uses AES algorithm
+ * AES algorithm copyright Chris Veness (CLA signed and permission given to use code under BSD license)
+ Taken from http://www.movable-type.co.uk/scripts/aes.html
diff --git a/includes/js/dojox/_sql/_crypto.js b/includes/js/dojox/_sql/_crypto.js
new file mode 100644
index 0000000..e8a9214
--- /dev/null
+++ b/includes/js/dojox/_sql/_crypto.js
@@ -0,0 +1,443 @@
+if(!dojo._hasResource["dojox._sql._crypto"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
+dojo._hasResource["dojox._sql._crypto"] = true;
+// Taken from http://www.movable-type.co.uk/scripts/aes.html by
+// Chris Veness (CLA signed); adapted for Dojo and Google Gears Worker Pool
+// by Brad Neuberg, bkn3@columbia.edu
+
+dojo.provide("dojox._sql._crypto");
+
+dojo.mixin(dojox._sql._crypto,{
+ // _POOL_SIZE:
+ // Size of worker pool to create to help with crypto
+ _POOL_SIZE: 100,
+
+ encrypt: function(plaintext, password, callback){
+ // summary:
+ // Use Corrected Block TEA to encrypt plaintext using password
+ // (note plaintext & password must be strings not string objects).
+ // Results will be returned to the 'callback' asychronously.
+ this._initWorkerPool();
+
+ var msg ={plaintext: plaintext, password: password};
+ msg = dojo.toJson(msg);
+ msg = "encr:" + String(msg);
+
+ this._assignWork(msg, callback);
+ },
+
+ decrypt: function(ciphertext, password, callback){
+ // summary:
+ // Use Corrected Block TEA to decrypt ciphertext using password
+ // (note ciphertext & password must be strings not string objects).
+ // Results will be returned to the 'callback' asychronously.
+ this._initWorkerPool();
+
+ var msg ={ciphertext: ciphertext, password: password};
+ msg = dojo.toJson(msg);
+ msg = "decr:" + String(msg);
+
+ this._assignWork(msg, callback);
+ },
+
+ _initWorkerPool: function(){
+ // bugs in Google Gears prevents us from dynamically creating
+ // and destroying workers as we need them -- the worker
+ // pool functionality stops working after a number of crypto
+ // cycles (probably related to a memory leak in Google Gears).
+ // this is too bad, since it results in much simpler code.
+
+ // instead, we have to create a pool of workers and reuse them. we
+ // keep a stack of 'unemployed' Worker IDs that are currently not working.
+ // if a work request comes in, we pop off the 'unemployed' stack
+ // and put them to work, storing them in an 'employed' hashtable,
+ // keyed by their Worker ID with the value being the callback function
+ // that wants the result. when an employed worker is done, we get
+ // a message in our 'manager' which adds this worker back to the
+ // unemployed stack and routes the result to the callback that
+ // wanted it. if all the workers were employed in the past but
+ // more work needed to be done (i.e. it's a tight labor pool ;)
+ // then the work messages are pushed onto
+ // a 'handleMessage' queue as an object tuple{msg: msg, callback: callback}
+
+ if(!this._manager){
+ try{
+ this._manager = google.gears.factory.create("beta.workerpool", "1.0");
+ this._unemployed = [];
+ this._employed ={};
+ this._handleMessage = [];
+
+ var self = this;
+ this._manager.onmessage = function(msg, sender){
+ // get the callback necessary to serve this result
+ var callback = self._employed["_" + sender];
+
+ // make this worker unemployed
+ self._employed["_" + sender] = undefined;
+ self._unemployed.push("_" + sender);
+
+ // see if we need to assign new work
+ // that was queued up needing to be done
+ if(self._handleMessage.length){
+ var handleMe = self._handleMessage.shift();
+ self._assignWork(handleMe.msg, handleMe.callback);
+ }
+
+ // return results
+ callback(msg);
+ }
+
+ var workerInit = "function _workerInit(){"
+ + "gearsWorkerPool.onmessage = "
+ + String(this._workerHandler)
+ + ";"
+ + "}";
+
+ var code = workerInit + " _workerInit();";
+
+ // create our worker pool
+ for(var i = 0; i < this._POOL_SIZE; i++){
+ this._unemployed.push("_" + this._manager.createWorker(code));
+ }
+ }catch(exp){
+ throw exp.message||exp;
+ }
+ }
+ },
+
+ _assignWork: function(msg, callback){
+ // can we immediately assign this work?
+ if(!this._handleMessage.length && this._unemployed.length){
+ // get an unemployed worker
+ var workerID = this._unemployed.shift().substring(1); // remove _
+
+ // list this worker as employed
+ this._employed["_" + workerID] = callback;
+
+ // do the worke
+ this._manager.sendMessage(msg, workerID);
+ }else{
+ // we have to queue it up
+ this._handleMessage ={msg: msg, callback: callback};
+ }
+ },
+
+ _workerHandler: function(msg, sender){
+
+ /* Begin AES Implementation */
+
+ /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
+
+ // Sbox is pre-computed multiplicative inverse in GF(2^8) used in SubBytes and KeyExpansion [§5.1.1]
+ var Sbox = [0x63,0x7c,0x77,0x7b,0xf2,0x6b,0x6f,0xc5,0x30,0x01,0x67,0x2b,0xfe,0xd7,0xab,0x76,
+ 0xca,0x82,0xc9,0x7d,0xfa,0x59,0x47,0xf0,0xad,0xd4,0xa2,0xaf,0x9c,0xa4,0x72,0xc0,
+ 0xb7,0xfd,0x93,0x26,0x36,0x3f,0xf7,0xcc,0x34,0xa5,0xe5,0xf1,0x71,0xd8,0x31,0x15,
+ 0x04,0xc7,0x23,0xc3,0x18,0x96,0x05,0x9a,0x07,0x12,0x80,0xe2,0xeb,0x27,0xb2,0x75,
+ 0x09,0x83,0x2c,0x1a,0x1b,0x6e,0x5a,0xa0,0x52,0x3b,0xd6,0xb3,0x29,0xe3,0x2f,0x84,
+ 0x53,0xd1,0x00,0xed,0x20,0xfc,0xb1,0x5b,0x6a,0xcb,0xbe,0x39,0x4a,0x4c,0x58,0xcf,
+ 0xd0,0xef,0xaa,0xfb,0x43,0x4d,0x33,0x85,0x45,0xf9,0x02,0x7f,0x50,0x3c,0x9f,0xa8,
+ 0x51,0xa3,0x40,0x8f,0x92,0x9d,0x38,0xf5,0xbc,0xb6,0xda,0x21,0x10,0xff,0xf3,0xd2,
+ 0xcd,0x0c,0x13,0xec,0x5f,0x97,0x44,0x17,0xc4,0xa7,0x7e,0x3d,0x64,0x5d,0x19,0x73,
+ 0x60,0x81,0x4f,0xdc,0x22,0x2a,0x90,0x88,0x46,0xee,0xb8,0x14,0xde,0x5e,0x0b,0xdb,
+ 0xe0,0x32,0x3a,0x0a,0x49,0x06,0x24,0x5c,0xc2,0xd3,0xac,0x62,0x91,0x95,0xe4,0x79,
+ 0xe7,0xc8,0x37,0x6d,0x8d,0xd5,0x4e,0xa9,0x6c,0x56,0xf4,0xea,0x65,0x7a,0xae,0x08,
+ 0xba,0x78,0x25,0x2e,0x1c,0xa6,0xb4,0xc6,0xe8,0xdd,0x74,0x1f,0x4b,0xbd,0x8b,0x8a,
+ 0x70,0x3e,0xb5,0x66,0x48,0x03,0xf6,0x0e,0x61,0x35,0x57,0xb9,0x86,0xc1,0x1d,0x9e,
+ 0xe1,0xf8,0x98,0x11,0x69,0xd9,0x8e,0x94,0x9b,0x1e,0x87,0xe9,0xce,0x55,0x28,0xdf,
+ 0x8c,0xa1,0x89,0x0d,0xbf,0xe6,0x42,0x68,0x41,0x99,0x2d,0x0f,0xb0,0x54,0xbb,0x16];
+
+ // Rcon is Round Constant used for the Key Expansion [1st col is 2^(r-1) in GF(2^8)] [§5.2]
+ var Rcon = [ [0x00, 0x00, 0x00, 0x00],
+ [0x01, 0x00, 0x00, 0x00],
+ [0x02, 0x00, 0x00, 0x00],
+ [0x04, 0x00, 0x00, 0x00],
+ [0x08, 0x00, 0x00, 0x00],
+ [0x10, 0x00, 0x00, 0x00],
+ [0x20, 0x00, 0x00, 0x00],
+ [0x40, 0x00, 0x00, 0x00],
+ [0x80, 0x00, 0x00, 0x00],
+ [0x1b, 0x00, 0x00, 0x00],
+ [0x36, 0x00, 0x00, 0x00] ];
+
+ /*
+ * AES Cipher function: encrypt 'input' with Rijndael algorithm
+ *
+ * takes byte-array 'input' (16 bytes)
+ * 2D byte-array key schedule 'w' (Nr+1 x Nb bytes)
+ *
+ * applies Nr rounds (10/12/14) using key schedule w for 'add round key' stage
+ *
+ * returns byte-array encrypted value (16 bytes)
+ */
+ function Cipher(input, w) { // main Cipher function [§5.1]
+ var Nb = 4; // block size (in words): no of columns in state (fixed at 4 for AES)
+ var Nr = w.length/Nb - 1; // no of rounds: 10/12/14 for 128/192/256-bit keys
+
+ var state = [[],[],[],[]]; // initialise 4xNb byte-array 'state' with input [§3.4]
+ for (var i=0; i<4*Nb; i++) state[i%4][Math.floor(i/4)] = input[i];
+
+ state = AddRoundKey(state, w, 0, Nb);
+
+ for (var round=1; round<Nr; round++) {
+ state = SubBytes(state, Nb);
+ state = ShiftRows(state, Nb);
+ state = MixColumns(state, Nb);
+ state = AddRoundKey(state, w, round, Nb);
+ }
+
+ state = SubBytes(state, Nb);
+ state = ShiftRows(state, Nb);
+ state = AddRoundKey(state, w, Nr, Nb);
+
+ var output = new Array(4*Nb); // convert state to 1-d array before returning [§3.4]
+ for (var i=0; i<4*Nb; i++) output[i] = state[i%4][Math.floor(i/4)];
+ return output;
+ }
+
+
+ function SubBytes(s, Nb) { // apply SBox to state S [§5.1.1]
+ for (var r=0; r<4; r++) {
+ for (var c=0; c<Nb; c++) s[r][c] = Sbox[s[r][c]];
+ }
+ return s;
+ }
+
+
+ function ShiftRows(s, Nb) { // shift row r of state S left by r bytes [§5.1.2]
+ var t = new Array(4);
+ for (var r=1; r<4; r++) {
+ for (var c=0; c<4; c++) t[c] = s[r][(c+r)%Nb]; // shift into temp copy
+ for (var c=0; c<4; c++) s[r][c] = t[c]; // and copy back
+ } // note that this will work for Nb=4,5,6, but not 7,8 (always 4 for AES):
+ return s; // see fp.gladman.plus.com/cryptography_technology/rijndael/aes.spec.311.pdf
+ }
+
+
+ function MixColumns(s, Nb) { // combine bytes of each col of state S [§5.1.3]
+ for (var c=0; c<4; c++) {
+ var a = new Array(4); // 'a' is a copy of the current column from 's'
+ var b = new Array(4); // 'b' is a•{02} in GF(2^8)
+ for (var i=0; i<4; i++) {
+ a[i] = s[i][c];
+ b[i] = s[i][c]&0x80 ? s[i][c]<<1 ^ 0x011b : s[i][c]<<1;
+ }
+ // a[n] ^ b[n] is a•{03} in GF(2^8)
+ s[0][c] = b[0] ^ a[1] ^ b[1] ^ a[2] ^ a[3]; // 2*a0 + 3*a1 + a2 + a3
+ s[1][c] = a[0] ^ b[1] ^ a[2] ^ b[2] ^ a[3]; // a0 * 2*a1 + 3*a2 + a3
+ s[2][c] = a[0] ^ a[1] ^ b[2] ^ a[3] ^ b[3]; // a0 + a1 + 2*a2 + 3*a3
+ s[3][c] = a[0] ^ b[0] ^ a[1] ^ a[2] ^ b[3]; // 3*a0 + a1 + a2 + 2*a3
+ }
+ return s;
+ }
+
+
+ function AddRoundKey(state, w, rnd, Nb) { // xor Round Key into state S [§5.1.4]
+ for (var r=0; r<4; r++) {
+ for (var c=0; c<Nb; c++) state[r][c] ^= w[rnd*4+c][r];
+ }
+ return state;
+ }
+
+
+ function KeyExpansion(key) { // generate Key Schedule (byte-array Nr+1 x Nb) from Key [§5.2]
+ var Nb = 4; // block size (in words): no of columns in state (fixed at 4 for AES)
+ var Nk = key.length/4 // key length (in words): 4/6/8 for 128/192/256-bit keys
+ var Nr = Nk + 6; // no of rounds: 10/12/14 for 128/192/256-bit keys
+
+ var w = new Array(Nb*(Nr+1));
+ var temp = new Array(4);
+
+ for (var i=0; i<Nk; i++) {
+ var r = [key[4*i], key[4*i+1], key[4*i+2], key[4*i+3]];
+ w[i] = r;
+ }
+
+ for (var i=Nk; i<(Nb*(Nr+1)); i++) {
+ w[i] = new Array(4);
+ for (var t=0; t<4; t++) temp[t] = w[i-1][t];
+ if (i % Nk == 0) {
+ temp = SubWord(RotWord(temp));
+ for (var t=0; t<4; t++) temp[t] ^= Rcon[i/Nk][t];
+ } else if (Nk > 6 && i%Nk == 4) {
+ temp = SubWord(temp);
+ }
+ for (var t=0; t<4; t++) w[i][t] = w[i-Nk][t] ^ temp[t];
+ }
+
+ return w;
+ }
+
+ function SubWord(w) { // apply SBox to 4-byte word w
+ for (var i=0; i<4; i++) w[i] = Sbox[w[i]];
+ return w;
+ }
+
+ function RotWord(w) { // rotate 4-byte word w left by one byte
+ w[4] = w[0];
+ for (var i=0; i<4; i++) w[i] = w[i+1];
+ return w;
+ }
+
+ /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
+
+ /*
+ * Use AES to encrypt 'plaintext' with 'password' using 'nBits' key, in 'Counter' mode of operation
+ * - see http://csrc.nist.gov/publications/nistpubs/800-38a/sp800-38a.pdf
+ * for each block
+ * - outputblock = cipher(counter, key)
+ * - cipherblock = plaintext xor outputblock
+ */
+ function AESEncryptCtr(plaintext, password, nBits) {
+ if (!(nBits==128 || nBits==192 || nBits==256)) return ''; // standard allows 128/192/256 bit keys
+
+ // for this example script, generate the key by applying Cipher to 1st 16/24/32 chars of password;
+ // for real-world applications, a more secure approach would be to hash the password e.g. with SHA-1
+ var nBytes = nBits/8; // no bytes in key
+ var pwBytes = new Array(nBytes);
+ for (var i=0; i<nBytes; i++) pwBytes[i] = password.charCodeAt(i) & 0xff;
+
+ var key = Cipher(pwBytes, KeyExpansion(pwBytes));
+
+ key = key.concat(key.slice(0, nBytes-16)); // key is now 16/24/32 bytes long
+
+ // initialise counter block (NIST SP800-38A §B.2): millisecond time-stamp for nonce in 1st 8 bytes,
+ // block counter in 2nd 8 bytes
+ var blockSize = 16; // block size fixed at 16 bytes / 128 bits (Nb=4) for AES
+ var counterBlock = new Array(blockSize); // block size fixed at 16 bytes / 128 bits (Nb=4) for AES
+ var nonce = (new Date()).getTime(); // milliseconds since 1-Jan-1970
+
+ // encode nonce in two stages to cater for JavaScript 32-bit limit on bitwise ops
+ for (var i=0; i<4; i++) counterBlock[i] = (nonce >>> i*8) & 0xff;
+ for (var i=0; i<4; i++) counterBlock[i+4] = (nonce/0x100000000 >>> i*8) & 0xff;
+
+ // generate key schedule - an expansion of the key into distinct Key Rounds for each round
+ var keySchedule = KeyExpansion(key);
+
+ var blockCount = Math.ceil(plaintext.length/blockSize);
+ var ciphertext = new Array(blockCount); // ciphertext as array of strings
+
+ for (var b=0; b<blockCount; b++) {
+ // set counter (block #) in last 8 bytes of counter block (leaving nonce in 1st 8 bytes)
+ // again done in two stages for 32-bit ops
+ for (var c=0; c<4; c++) counterBlock[15-c] = (b >>> c*8) & 0xff;
+ for (var c=0; c<4; c++) counterBlock[15-c-4] = (b/0x100000000 >>> c*8)
+
+ var cipherCntr = Cipher(counterBlock, keySchedule); // -- encrypt counter block --
+
+ // calculate length of final block:
+ var blockLength = b<blockCount-1 ? blockSize : (plaintext.length-1)%blockSize+1;
+
+ var ct = '';
+ for (var i=0; i<blockLength; i++) { // -- xor plaintext with ciphered counter byte-by-byte --
+ var plaintextByte = plaintext.charCodeAt(b*blockSize+i);
+ var cipherByte = plaintextByte ^ cipherCntr[i];
+ ct += String.fromCharCode(cipherByte);
+ }
+ // ct is now ciphertext for this block
+
+ ciphertext[b] = escCtrlChars(ct); // escape troublesome characters in ciphertext
+ }
+
+ // convert the nonce to a string to go on the front of the ciphertext
+ var ctrTxt = '';
+ for (var i=0; i<8; i++) ctrTxt += String.fromCharCode(counterBlock[i]);
+ ctrTxt = escCtrlChars(ctrTxt);
+
+ // use '-' to separate blocks, use Array.join to concatenate arrays of strings for efficiency
+ return ctrTxt + '-' + ciphertext.join('-');
+ }
+
+
+ /*
+ * Use AES to decrypt 'ciphertext' with 'password' using 'nBits' key, in Counter mode of operation
+ *
+ * for each block
+ * - outputblock = cipher(counter, key)
+ * - cipherblock = plaintext xor outputblock
+ */
+ function AESDecryptCtr(ciphertext, password, nBits) {
+ if (!(nBits==128 || nBits==192 || nBits==256)) return ''; // standard allows 128/192/256 bit keys
+
+ var nBytes = nBits/8; // no bytes in key
+ var pwBytes = new Array(nBytes);
+ for (var i=0; i<nBytes; i++) pwBytes[i] = password.charCodeAt(i) & 0xff;
+ var pwKeySchedule = KeyExpansion(pwBytes);
+ var key = Cipher(pwBytes, pwKeySchedule);
+ key = key.concat(key.slice(0, nBytes-16)); // key is now 16/24/32 bytes long
+
+ var keySchedule = KeyExpansion(key);
+
+ ciphertext = ciphertext.split('-'); // split ciphertext into array of block-length strings
+
+ // recover nonce from 1st element of ciphertext
+ var blockSize = 16; // block size fixed at 16 bytes / 128 bits (Nb=4) for AES
+ var counterBlock = new Array(blockSize);
+ var ctrTxt = unescCtrlChars(ciphertext[0]);
+ for (var i=0; i<8; i++) counterBlock[i] = ctrTxt.charCodeAt(i);
+
+ var plaintext = new Array(ciphertext.length-1);
+
+ for (var b=1; b<ciphertext.length; b++) {
+ // set counter (block #) in last 8 bytes of counter block (leaving nonce in 1st 8 bytes)
+ for (var c=0; c<4; c++) counterBlock[15-c] = ((b-1) >>> c*8) & 0xff;
+ for (var c=0; c<4; c++) counterBlock[15-c-4] = ((b/0x100000000-1) >>> c*8) & 0xff;
+
+ var cipherCntr = Cipher(counterBlock, keySchedule); // encrypt counter block
+
+ ciphertext[b] = unescCtrlChars(ciphertext[b]);
+
+ var pt = '';
+ for (var i=0; i<ciphertext[b].length; i++) {
+ // -- xor plaintext with ciphered counter byte-by-byte --
+ var ciphertextByte = ciphertext[b].charCodeAt(i);
+ var plaintextByte = ciphertextByte ^ cipherCntr[i];
+ pt += String.fromCharCode(plaintextByte);
+ }
+ // pt is now plaintext for this block
+
+ plaintext[b-1] = pt; // b-1 'cos no initial nonce block in plaintext
+ }
+
+ return plaintext.join('');
+ }
+
+ /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
+
+ function escCtrlChars(str) { // escape control chars which might cause problems handling ciphertext
+ return str.replace(/[\0\t\n\v\f\r\xa0!-]/g, function(c) { return '!' + c.charCodeAt(0) + '!'; });
+ } // \xa0 to cater for bug in Firefox; include '-' to leave it free for use as a block marker
+
+ function unescCtrlChars(str) { // unescape potentially problematic control characters
+ return str.replace(/!\d\d?\d?!/g, function(c) { return String.fromCharCode(c.slice(1,-1)); });
+ }
+
+ /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
+
+ function encrypt(plaintext, password){
+ return AESEncryptCtr(plaintext, password, 256);
+ }
+
+ function decrypt(ciphertext, password){
+ return AESDecryptCtr(ciphertext, password, 256);
+ }
+
+ /* End AES Implementation */
+
+ var cmd = msg.substr(0,4);
+ var arg = msg.substr(5);
+ if(cmd == "encr"){
+ arg = eval("(" + arg + ")");
+ var plaintext = arg.plaintext;
+ var password = arg.password;
+ var results = encrypt(plaintext, password);
+ gearsWorkerPool.sendMessage(String(results), sender);
+ }else if(cmd == "decr"){
+ arg = eval("(" + arg + ")");
+ var ciphertext = arg.ciphertext;
+ var password = arg.password;
+ var results = decrypt(ciphertext, password);
+ gearsWorkerPool.sendMessage(String(results), sender);
+ }
+ }
+});
+
+}
diff --git a/includes/js/dojox/_sql/common.js b/includes/js/dojox/_sql/common.js
new file mode 100644
index 0000000..00f4893
--- /dev/null
+++ b/includes/js/dojox/_sql/common.js
@@ -0,0 +1,538 @@
+if(!dojo._hasResource["dojox._sql.common"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
+dojo._hasResource["dojox._sql.common"] = true;
+dojo.provide("dojox._sql.common");
+
+dojo.require("dojox._sql._crypto");
+
+// summary:
+// Executes a SQL expression.
+// description:
+// There are four ways to call this:
+// 1) Straight SQL: dojox.sql("SELECT * FROM FOOBAR");
+// 2) SQL with parameters: dojox.sql("INSERT INTO FOOBAR VALUES (?)", someParam)
+// 3) Encrypting particular values:
+// dojox.sql("INSERT INTO FOOBAR VALUES (ENCRYPT(?))", someParam, "somePassword", callback)
+// 4) Decrypting particular values:
+// dojox.sql("SELECT DECRYPT(SOMECOL1), DECRYPT(SOMECOL2) FROM
+// FOOBAR WHERE SOMECOL3 = ?", someParam,
+// "somePassword", callback)
+//
+// For encryption and decryption the last two values should be the the password for
+// encryption/decryption, and the callback function that gets the result set.
+//
+// Note: We only support ENCRYPT(?) statements, and
+// and DECRYPT(*) statements for now -- you can not have a literal string
+// inside of these, such as ENCRYPT('foobar')
+//
+// Note: If you have multiple columns to encrypt and decrypt, you can use the following
+// convenience form to not have to type ENCRYPT(?)/DECRYPT(*) many times:
+//
+// dojox.sql("INSERT INTO FOOBAR VALUES (ENCRYPT(?, ?, ?))",
+// someParam1, someParam2, someParam3,
+// "somePassword", callback)
+//
+// dojox.sql("SELECT DECRYPT(SOMECOL1, SOMECOL2) FROM
+// FOOBAR WHERE SOMECOL3 = ?", someParam,
+// "somePassword", callback)
+dojox.sql = new Function("return dojox.sql._exec(arguments);");
+
+dojo.mixin(dojox.sql, {
+ dbName: null,
+
+ // summary:
+ // If true, then we print out any SQL that is executed
+ // to the debug window
+ debug: (dojo.exists("dojox.sql.debug")?dojox.sql.debug:false),
+
+ open: function(dbName){
+ if(this._dbOpen && (!dbName || dbName == this.dbName)){
+ return;
+ }
+
+ if(!this.dbName){
+ this.dbName = "dot_store_"
+ + window.location.href.replace(/[^0-9A-Za-z_]/g, "_");
+ // database names in Gears are limited to 64 characters long
+ if(this.dbName.length > 63){
+ this.dbName = this.dbName.substring(0, 63);
+ }
+ }
+
+ if(!dbName){
+ dbName = this.dbName;
+ }
+
+ try{
+ this._initDb();
+ this.db.open(dbName);
+ this._dbOpen = true;
+ }catch(exp){
+ throw exp.message||exp;
+ }
+ },
+
+ close: function(dbName){
+ // on Internet Explorer, Google Gears throws an exception
+ // "Object not a collection", when we try to close the
+ // database -- just don't close it on this platform
+ // since we are running into a Gears bug; the Gears team
+ // said it's ok to not close a database connection
+ if(dojo.isIE){ return; }
+
+ if(!this._dbOpen && (!dbName || dbName == this.dbName)){
+ return;
+ }
+
+ if(!dbName){
+ dbName = this.dbName;
+ }
+
+ try{
+ this.db.close(dbName);
+ this._dbOpen = false;
+ }catch(exp){
+ throw exp.message||exp;
+ }
+ },
+
+ _exec: function(params){
+ try{
+ // get the Gears Database object
+ this._initDb();
+
+ // see if we need to open the db; if programmer
+ // manually called dojox.sql.open() let them handle
+ // it; otherwise we open and close automatically on
+ // each SQL execution
+ if(!this._dbOpen){
+ this.open();
+ this._autoClose = true;
+ }
+
+ // determine our parameters
+ var sql = null;
+ var callback = null;
+ var password = null;
+
+ var args = dojo._toArray(params);
+
+ sql = args.splice(0, 1)[0];
+
+ // does this SQL statement use the ENCRYPT or DECRYPT
+ // keywords? if so, extract our callback and crypto
+ // password
+ if(this._needsEncrypt(sql) || this._needsDecrypt(sql)){
+ callback = args.splice(args.length - 1, 1)[0];
+ password = args.splice(args.length - 1, 1)[0];
+ }
+
+ // 'args' now just has the SQL parameters
+
+ // print out debug SQL output if the developer wants that
+ if(this.debug){
+ this._printDebugSQL(sql, args);
+ }
+
+ // handle SQL that needs encryption/decryption differently
+ // do we have an ENCRYPT SQL statement? if so, handle that first
+ if(this._needsEncrypt(sql)){
+ var crypto = new dojox.sql._SQLCrypto("encrypt", sql,
+ password, args,
+ callback);
+ return; // encrypted results will arrive asynchronously
+ }else if(this._needsDecrypt(sql)){ // otherwise we have a DECRYPT statement
+ var crypto = new dojox.sql._SQLCrypto("decrypt", sql,
+ password, args,
+ callback);
+ return; // decrypted results will arrive asynchronously
+ }
+
+ // execute the SQL and get the results
+ var rs = this.db.execute(sql, args);
+
+ // Gears ResultSet object's are ugly -- normalize
+ // these into something JavaScript programmers know
+ // how to work with, basically an array of
+ // JavaScript objects where each property name is
+ // simply the field name for a column of data
+ rs = this._normalizeResults(rs);
+
+ if(this._autoClose){
+ this.close();
+ }
+
+ return rs;
+ }catch(exp){
+ exp = exp.message||exp;
+
+ console.debug("SQL Exception: " + exp);
+
+ if(this._autoClose){
+ try{
+ this.close();
+ }catch(e){
+ console.debug("Error closing database: "
+ + e.message||e);
+ }
+ }
+
+ throw exp;
+ }
+ },
+
+ _initDb: function(){
+ if(!this.db){
+ try{
+ this.db = google.gears.factory.create('beta.database', '1.0');
+ }catch(exp){
+ dojo.setObject("google.gears.denied", true);
+ dojox.off.onFrameworkEvent("coreOperationFailed");
+ throw "Google Gears must be allowed to run";
+ }
+ }
+ },
+
+ _printDebugSQL: function(sql, args){
+ var msg = "dojox.sql(\"" + sql + "\"";
+ for(var i = 0; i < args.length; i++){
+ if(typeof args[i] == "string"){
+ msg += ", \"" + args[i] + "\"";
+ }else{
+ msg += ", " + args[i];
+ }
+ }
+ msg += ")";
+
+ console.debug(msg);
+ },
+
+ _normalizeResults: function(rs){
+ var results = [];
+ if(!rs){ return []; }
+
+ while(rs.isValidRow()){
+ var row = {};
+
+ for(var i = 0; i < rs.fieldCount(); i++){
+ var fieldName = rs.fieldName(i);
+ var fieldValue = rs.field(i);
+ row[fieldName] = fieldValue;
+ }
+
+ results.push(row);
+
+ rs.next();
+ }
+
+ rs.close();
+
+ return results;
+ },
+
+ _needsEncrypt: function(sql){
+ return /encrypt\([^\)]*\)/i.test(sql);
+ },
+
+ _needsDecrypt: function(sql){
+ return /decrypt\([^\)]*\)/i.test(sql);
+ }
+});
+
+// summary:
+// A private class encapsulating any cryptography that must be done
+// on a SQL statement. We instantiate this class and have it hold
+// it's state so that we can potentially have several encryption
+// operations happening at the same time by different SQL statements.
+dojo.declare("dojox.sql._SQLCrypto", null, {
+ constructor: function(action, sql, password, args, callback){
+ if(action == "encrypt"){
+ this._execEncryptSQL(sql, password, args, callback);
+ }else{
+ this._execDecryptSQL(sql, password, args, callback);
+ }
+ },
+
+ _execEncryptSQL: function(sql, password, args, callback){
+ // strip the ENCRYPT/DECRYPT keywords from the SQL
+ var strippedSQL = this._stripCryptoSQL(sql);
+
+ // determine what arguments need encryption
+ var encryptColumns = this._flagEncryptedArgs(sql, args);
+
+ // asynchronously encrypt each argument that needs it
+ var self = this;
+ this._encrypt(strippedSQL, password, args, encryptColumns, function(finalArgs){
+ // execute the SQL
+ var error = false;
+ var resultSet = [];
+ var exp = null;
+ try{
+ resultSet = dojox.sql.db.execute(strippedSQL, finalArgs);
+ }catch(execError){
+ error = true;
+ exp = execError.message||execError;
+ }
+
+ // was there an error during SQL execution?
+ if(exp != null){
+ if(dojox.sql._autoClose){
+ try{ dojox.sql.close(); }catch(e){}
+ }
+
+ callback(null, true, exp.toString());
+ return;
+ }
+
+ // normalize SQL results into a JavaScript object
+ // we can work with
+ resultSet = dojox.sql._normalizeResults(resultSet);
+
+ if(dojox.sql._autoClose){
+ dojox.sql.close();
+ }
+
+ // are any decryptions necessary on the result set?
+ if(dojox.sql._needsDecrypt(sql)){
+ // determine which of the result set columns needs decryption
+ var needsDecrypt = self._determineDecryptedColumns(sql);
+
+ // now decrypt columns asynchronously
+ // decrypt columns that need it
+ self._decrypt(resultSet, needsDecrypt, password, function(finalResultSet){
+ callback(finalResultSet, false, null);
+ });
+ }else{
+ callback(resultSet, false, null);
+ }
+ });
+ },
+
+ _execDecryptSQL: function(sql, password, args, callback){
+ // strip the ENCRYPT/DECRYPT keywords from the SQL
+ var strippedSQL = this._stripCryptoSQL(sql);
+
+ // determine which columns needs decryption; this either
+ // returns the value *, which means all result set columns will
+ // be decrypted, or it will return the column names that need
+ // decryption set on a hashtable so we can quickly test a given
+ // column name; the key is the column name that needs
+ // decryption and the value is 'true' (i.e. needsDecrypt["someColumn"]
+ // would return 'true' if it needs decryption, and would be 'undefined'
+ // or false otherwise)
+ var needsDecrypt = this._determineDecryptedColumns(sql);
+
+ // execute the SQL
+ var error = false;
+ var resultSet = [];
+ var exp = null;
+ try{
+ resultSet = dojox.sql.db.execute(strippedSQL, args);
+ }catch(execError){
+ error = true;
+ exp = execError.message||execError;
+ }
+
+ // was there an error during SQL execution?
+ if(exp != null){
+ if(dojox.sql._autoClose){
+ try{ dojox.sql.close(); }catch(e){}
+ }
+
+ callback(resultSet, true, exp.toString());
+ return;
+ }
+
+ // normalize SQL results into a JavaScript object
+ // we can work with
+ resultSet = dojox.sql._normalizeResults(resultSet);
+
+ if(dojox.sql._autoClose){
+ dojox.sql.close();
+ }
+
+ // decrypt columns that need it
+ this._decrypt(resultSet, needsDecrypt, password, function(finalResultSet){
+ callback(finalResultSet, false, null);
+ });
+ },
+
+ _encrypt: function(sql, password, args, encryptColumns, callback){
+ //console.debug("_encrypt, sql="+sql+", password="+password+", encryptColumns="+encryptColumns+", args="+args);
+
+ this._totalCrypto = 0;
+ this._finishedCrypto = 0;
+ this._finishedSpawningCrypto = false;
+ this._finalArgs = args;
+
+ for(var i = 0; i < args.length; i++){
+ if(encryptColumns[i]){
+ // we have an encrypt() keyword -- get just the value inside
+ // the encrypt() parantheses -- for now this must be a ?
+ var sqlParam = args[i];
+ var paramIndex = i;
+
+ // update the total number of encryptions we know must be done asynchronously
+ this._totalCrypto++;
+
+ // FIXME: This currently uses DES as a proof-of-concept since the
+ // DES code used is quite fast and was easy to work with. Modify dojox.sql
+ // to be able to specify a different encryption provider through a
+ // a SQL-like syntax, such as dojox.sql("SET ENCRYPTION BLOWFISH"),
+ // and modify the dojox.crypto.Blowfish code to be able to work using
+ // a Google Gears Worker Pool
+
+ // do the actual encryption now, asychronously on a Gears worker thread
+ dojox._sql._crypto.encrypt(sqlParam, password, dojo.hitch(this, function(results){
+ // set the new encrypted value
+ this._finalArgs[paramIndex] = results;
+ this._finishedCrypto++;
+ // are we done with all encryption?
+ if(this._finishedCrypto >= this._totalCrypto
+ && this._finishedSpawningCrypto){
+ callback(this._finalArgs);
+ }
+ }));
+ }
+ }
+
+ this._finishedSpawningCrypto = true;
+ },
+
+ _decrypt: function(resultSet, needsDecrypt, password, callback){
+ //console.debug("decrypt, resultSet="+resultSet+", needsDecrypt="+needsDecrypt+", password="+password);
+
+ this._totalCrypto = 0;
+ this._finishedCrypto = 0;
+ this._finishedSpawningCrypto = false;
+ this._finalResultSet = resultSet;
+
+ for(var i = 0; i < resultSet.length; i++){
+ var row = resultSet[i];
+
+ // go through each of the column names in row,
+ // seeing if they need decryption
+ for(var columnName in row){
+ if(needsDecrypt == "*" || needsDecrypt[columnName]){
+ this._totalCrypto++;
+ var columnValue = row[columnName];
+
+ // forming a closure here can cause issues, with values not cleanly
+ // saved on Firefox/Mac OS X for some of the values above that
+ // are needed in the callback below; call a subroutine that will form
+ // a closure inside of itself instead
+ this._decryptSingleColumn(columnName, columnValue, password, i,
+ function(finalResultSet){
+ callback(finalResultSet);
+ });
+ }
+ }
+ }
+
+ this._finishedSpawningCrypto = true;
+ },
+
+ _stripCryptoSQL: function(sql){
+ // replace all DECRYPT(*) occurrences with a *
+ sql = sql.replace(/DECRYPT\(\*\)/ig, "*");
+
+ // match any ENCRYPT(?, ?, ?, etc) occurrences,
+ // then replace with just the question marks in the
+ // middle
+ var matches = sql.match(/ENCRYPT\([^\)]*\)/ig);
+ if(matches != null){
+ for(var i = 0; i < matches.length; i++){
+ var encryptStatement = matches[i];
+ var encryptValue = encryptStatement.match(/ENCRYPT\(([^\)]*)\)/i)[1];
+ sql = sql.replace(encryptStatement, encryptValue);
+ }
+ }
+
+ // match any DECRYPT(COL1, COL2, etc) occurrences,
+ // then replace with just the column names
+ // in the middle
+ matches = sql.match(/DECRYPT\([^\)]*\)/ig);
+ if(matches != null){
+ for(var i = 0; i < matches.length; i++){
+ var decryptStatement = matches[i];
+ var decryptValue = decryptStatement.match(/DECRYPT\(([^\)]*)\)/i)[1];
+ sql = sql.replace(decryptStatement, decryptValue);
+ }
+ }
+
+ return sql;
+ },
+
+ _flagEncryptedArgs: function(sql, args){
+ // capture literal strings that have question marks in them,
+ // and also capture question marks that stand alone
+ var tester = new RegExp(/([\"][^\"]*\?[^\"]*[\"])|([\'][^\']*\?[^\']*[\'])|(\?)/ig);
+ var matches;
+ var currentParam = 0;
+ var results = [];
+ while((matches = tester.exec(sql)) != null){
+ var currentMatch = RegExp.lastMatch+"";
+
+ // are we a literal string? then ignore it
+ if(/^[\"\']/.test(currentMatch)){
+ continue;
+ }
+
+ // do we have an encrypt keyword to our left?
+ var needsEncrypt = false;
+ if(/ENCRYPT\([^\)]*$/i.test(RegExp.leftContext)){
+ needsEncrypt = true;
+ }
+
+ // set the encrypted flag
+ results[currentParam] = needsEncrypt;
+
+ currentParam++;
+ }
+
+ return results;
+ },
+
+ _determineDecryptedColumns: function(sql){
+ var results = {};
+
+ if(/DECRYPT\(\*\)/i.test(sql)){
+ results = "*";
+ }else{
+ var tester = /DECRYPT\((?:\s*\w*\s*\,?)*\)/ig;
+ var matches;
+ while(matches = tester.exec(sql)){
+ var lastMatch = new String(RegExp.lastMatch);
+ var columnNames = lastMatch.replace(/DECRYPT\(/i, "");
+ columnNames = columnNames.replace(/\)/, "");
+ columnNames = columnNames.split(/\s*,\s*/);
+ dojo.forEach(columnNames, function(column){
+ if(/\s*\w* AS (\w*)/i.test(column)){
+ column = column.match(/\s*\w* AS (\w*)/i)[1];
+ }
+ results[column] = true;
+ });
+ }
+ }
+
+ return results;
+ },
+
+ _decryptSingleColumn: function(columnName, columnValue, password, currentRowIndex,
+ callback){
+ //console.debug("decryptSingleColumn, columnName="+columnName+", columnValue="+columnValue+", currentRowIndex="+currentRowIndex)
+ dojox._sql._crypto.decrypt(columnValue, password, dojo.hitch(this, function(results){
+ // set the new decrypted value
+ this._finalResultSet[currentRowIndex][columnName] = results;
+ this._finishedCrypto++;
+
+ // are we done with all encryption?
+ if(this._finishedCrypto >= this._totalCrypto
+ && this._finishedSpawningCrypto){
+ //console.debug("done with all decrypts");
+ callback(this._finalResultSet);
+ }
+ }));
+ }
+});
+
+}
diff --git a/includes/js/dojox/_sql/demos/customers/customers.html b/includes/js/dojox/_sql/demos/customers/customers.html
new file mode 100644
index 0000000..a4c0c03
--- /dev/null
+++ b/includes/js/dojox/_sql/demos/customers/customers.html
@@ -0,0 +1,292 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
+
+<html>
+ <head>
+ <script type="text/javascript"
+ src="../../../../dojo/dojo.js" djConfig="isDebug: false"></script>
+ <script type="text/javascript" src="../../../../dojox/off/offline.js"></script>
+
+ <style type="text/css">
+ body{
+ padding: 2em;
+ }
+
+ #dataTable{
+ margin-top: 2em;
+ }
+
+ button{
+ margin-left: 1em;
+ }
+
+ th, tr, td{
+ text-align: left;
+ }
+
+ table{
+ text-align: center;
+ clear: both;
+ }
+
+ #cryptoContainer{
+ float: left;
+ width: 60%;
+ }
+
+ #numRowsContainer{
+ float: right;
+ width: 40%;
+ }
+
+ #numRowsContainer input{
+ margin-left: 1.5em;
+ width: 5em;
+ }
+
+ .table-columns{
+ font-weight: bold;
+ }
+ </style>
+
+ <script>
+ dojo.require("dojox.sql");
+
+ dojo.connect(window, "onload", function(){
+ // draw our customer table on the screen
+ createTable();
+
+ // create our customer table in the database
+ dojox.sql("DROP TABLE IF EXISTS CUSTOMERS");
+ dojox.sql("CREATE TABLE CUSTOMERS ("
+ + "last_name TEXT, "
+ + "first_name TEXT, "
+ + "social_security TEXT"
+ + ")"
+ );
+ });
+
+ function createTable(){
+ // get number of rows to create
+ var NUM_ROWS = document.getElementById("numRows").value;
+ if(!NUM_ROWS){
+ alert("Please enter the number of "
+ + "customer rows the table should have");
+ return;
+ }
+
+ var table = document.getElementById("dataTable");
+ if(table){
+ table.parentNode.removeChild(table);
+ }
+
+ table = document.createElement("table");
+ table.setAttribute("id", "dataTable");
+ table.setAttribute("border", 1);
+
+ // if we don't use IE's craptacular proprietary table methods
+ // we get strange display glitches
+ var tr = (dojo.isIE) ? table.insertRow() : document.createElement("tr");
+ tr.className = "table-columns";
+ var th = (dojo.isIE) ? tr.insertCell() : document.createElement("th");
+ th.appendChild(document.createTextNode("Last Name"));
+ if(!dojo.isIE){
+ tr.appendChild(th);
+ }
+ th = (dojo.isIE) ? tr.insertCell() : document.createElement("th");
+ th.appendChild(document.createTextNode("First Name"));
+ if(!dojo.isIE){
+ tr.appendChild(th);
+ }
+ th = (dojo.isIE) ? tr.insertCell() : document.createElement("th");
+ th.appendChild(document.createTextNode("Social Security"));
+ if(!dojo.isIE){
+ tr.appendChild(th);
+
+ table.appendChild(tr);
+ }
+
+ for(var i = 1; i <= NUM_ROWS; i++){
+ tr = (dojo.isIE) ? table.insertRow() : document.createElement("tr");
+ tr.className = "data-item";
+
+ var elem = (dojo.isIE) ? tr.insertCell() : document.createElement("td");
+ elem.className = "last-name";
+ var lastName = "Doe" + i;
+ elem.appendChild(document.createTextNode(lastName));
+ if(!dojo.isIE){
+ tr.appendChild(elem);
+ }
+
+ elem = (dojo.isIE) ? tr.insertCell() : document.createElement("td");
+ elem.className = "first-name";
+ var firstName = "John" + i;
+ elem.appendChild(document.createTextNode(firstName));
+ if(!dojo.isIE){
+ tr.appendChild(elem);
+ }
+
+ elem = elem = (dojo.isIE) ? tr.insertCell() : document.createElement("td");
+ elem.className = "social-security";
+ var ss = 513121500 + i;
+ ss = new String(ss);
+ ss = ss.slice(0, 3) + "-" + ss.slice(3, 5) + "-" + ss.slice(5);
+ elem.appendChild(document.createTextNode(ss));
+ if(!dojo.isIE){
+ tr.appendChild(elem);
+
+ table.appendChild(tr);
+ }
+ }
+
+ document.body.appendChild(table);
+
+ // reset button state
+ dojo.byId("encrypt").disabled = false;
+ dojo.byId("decrypt").disabled = true;
+ }
+
+ function readTable(){
+ var data = [];
+ var rows = dojo.query(".data-item");
+ dojo.forEach(rows, function(row){
+ var td = row.getElementsByTagName("td");
+
+ var lastName = td[0].childNodes[0].nodeValue;
+ var firstName = td[1].childNodes[0].nodeValue;
+ var ssNumber = td[2].childNodes[0].nodeValue;
+
+ data.push({lastName: lastName, firstName: firstName, ssNumber: ssNumber,
+ toString: function(){
+ return "{lastName: " + lastName
+ + ", firstName: " + firstName
+ + ", ssNumber: " + ssNumber
+ + "}";
+ }});
+ });
+
+ return data;
+ }
+
+ function setData(data){
+ var rows = document.getElementsByTagName("tr");
+ for(var i = 1; i < rows.length; i++){
+ var customer = data[i - 1];
+ var td = rows[i].getElementsByTagName("td");
+ td[2].childNodes[0].nodeValue = customer.social_security;
+ }
+ }
+
+ function encrypt(){
+ // disable our buttons
+ dojo.byId("encrypt").disabled = true;
+ dojo.byId("decrypt").disabled = true;
+
+ var data = readTable();
+
+ var password = document.getElementById("password").value;
+
+ // delete any old data
+ dojox.sql("DELETE FROM CUSTOMERS");
+
+ // insert new data
+ insertCustomers(data, 0, password);
+ }
+
+ function insertCustomers(data, i, password){
+ var nextIndex = i + 1;
+
+ if(i >= data.length){
+ var savedRows = dojox.sql("SELECT * FROM CUSTOMERS");
+ setData(savedRows);
+ return;
+ }
+ dojox.sql("INSERT INTO CUSTOMERS VALUES (?, ?, ENCRYPT(?))",
+ data[i].lastName, data[i].firstName,
+ data[i].ssNumber,
+ password,
+ function(results, error, errorMsg){
+ // enable our buttons
+ dojo.byId("encrypt").disabled = true;
+ dojo.byId("decrypt").disabled = false;
+
+ if(error == true){
+ alert(errorMsg);
+ return;
+ }
+
+ insertCustomers(data, nextIndex, password);
+ }
+ );
+ }
+
+ function decrypt(){
+ // disable our buttons
+ dojo.byId("encrypt").disabled = true;
+ dojo.byId("decrypt").disabled = true;
+
+ var password = document.getElementById("password").value;
+
+ dojox.sql("SELECT last_name, first_name, DECRYPT(social_security) FROM CUSTOMERS",
+ password,
+ function(results, error, errorMsg){
+ // enable our buttons
+ dojo.byId("encrypt").disabled = false;
+ dojo.byId("decrypt").disabled = true;
+
+ if(error == true){
+ alert(errorMsg);
+ return;
+ }
+
+ setData(results);
+ }
+ );
+ }
+ </script>
+ </head>
+
+ <body>
+ <h1>Dojo SQL Cryptography</h1>
+
+ <h2>Instructions</h2>
+
+ <p>This demo shows Dojo Offline's SQL encryption technologies. In the table below, we have a
+ sample SQL table that has three columns of data: a last name, a first name, and
+ a social security number. We don't want to store the social security numbers
+ in the clear, just in case they are downloaded for offline use to a laptop and the
+ laptop is stolen.</p>
+
+ <p>To use this demo, enter a password and press the ENCRYPT button to see the Social Security column encrypt. Enter
+ the same password and press DECRYPT to see it decrypt. If you enter an incorrect password and
+ press DECRYPT, the Social Security column will remain encrypted and only show gibberish.</p>
+
+ <p>Under the covers we use 256-bit AES encryption and your password to derive the crypto key; we use
+ a facility in Google Gears to do the cryptography in such a way that the browser does not lock up
+ during processing. Dojo Offline ties this cryptography into Dojo SQL, providing convenient ENCRYPT()
+ and DECRYPT() SQL keywords you can use to easily have this functionality in your
+ own offline applications. To learn how you can use this feature
+ <a href="http://docs.google.com/View?docid=dhkhksk4_8gdp9gr#crypto" target="_blank">see here</a>.</p>
+
+ <div id="cryptoContainer">
+ <label for="password">
+ Password:
+ </label>
+
+ <input type="input" name="password" id="password" value="sample_password">
+
+ <button id="encrypt" onclick="window.setTimeout(encrypt, 1)">Encrypt</button>
+
+ <button id="decrypt" onclick="window.setTimeout(decrypt, 1)" disabled="true">Decrypt</button>
+ </div>
+
+ <div id="numRowsContainer">
+ <label for="numRows">
+ Number of Customer Rows in Table:
+ </label>
+
+ <input id="numRows" type="input" value="30">
+
+ <button onclick="createTable()">Update</button>
+ </div>
+ </body>
+</html> \ No newline at end of file