-
Notifications
You must be signed in to change notification settings - Fork 1
/
Copy pathdemo.html
358 lines (277 loc) · 12.9 KB
/
demo.html
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
<head>
<style>
a { display: block }
button { display: block }
.drop_zone {
background-color: lightgrey;
padding: 20px;
width: 200px;
}
</style>
</head>
<body onload="demo()">
<input type="file" onchange="file_handler(event)" >
<div class="drop_zone" ondrop="drop_handler(event);" ondragover="dragover_handler(event);">
<p>Drag one or more files to this Drop Zone ...</p>
</div>
Directories
<input type="file" webkitdirectory mozdirectory onchange="directory_handler(event)" >
<div id="$foo">
Go to https://example.com
</div>
<a id="$download">download test</a>
<a id="$download_zip">download zip test</a>
<script>
var _test_blob;
async function demo(){
var { Rand_Util } = WebUtil;
console.log( Rand_Util.random_hex_string() );
const { URL_Util } = WebUtil;
let query = "a=b&c=d";
console.log(URL_Util.decode_url_options(query));
const { linkify, linkify_text } = WebUtil.HTML_Util;
linkify($foo);
document.body.appendChild( linkify_text("Go to https://bing.com") )
const { Date_Util } = WebUtil;
var date = new Date();
date.setDate(date.getDate() - 1)
console.log( Date_Util.time_ago( date, new Date() ) ) // 1 day ago
console.log( Date_Util.short_date( date, new Date() ) ) // Apr 8
console.log( Date_Util.time_remaining_until( new Date(), date ) ) // 1 day
console.log( Date_Util.date_str_to_epoch( "2021/04/11" ) ) // 1618124400
console.log( Date_Util.date_to_epoch( date ) ) // 1617934205
const { Net_Util } = WebUtil;
var url = "https://code.jquery.com/jquery-3.6.0.slim.min.js";
var bytes = await Net_Util.fetch_as_byte_array( url, {
integrity: 'sha256-u7e5khyithlIdTpu22PHhENmPcRdFiHRjhAuHcs05RI='
});
console.log(`Downloaded ${bytes.length} bytes`);
const { hmac_sign, hmac_verify, get_hmac_key } = WebUtil.Crypt_Util;
var raw = Rand_Util.random_bytes(32);
var key = await get_hmac_key(raw);
console.log(await WebUtil.Crypt_Util.get_jwk(key));
var sig = await hmac_sign(key, "hello world")
if (hmac_verify(key, sig, "hello world")){
console.log("verified");
}
const { base64url_encode_byte_array, base64_encode_byte_array } = WebUtil.Data_Util;
const { generate_dh_keypair, derive_dh_shared_secret, get_dh_key, get_jwk } = WebUtil.Crypt_Util;
// Alice does
var alice_keypair = await generate_dh_keypair();
var alice_pubkey_jwk = await get_jwk(alice_keypair.publicKey);
// Send Alice's pub key to Bob
// Bob does
var bob_keypair = await generate_dh_keypair();
var bob_pubkey_jwk = await get_jwk(bob_keypair.publicKey);
var alice_pubkey = await get_dh_key(alice_pubkey_jwk);
var shared_secret_raw = await derive_dh_shared_secret(bob_keypair.privateKey, alice_pubkey)
var shared_secret = base64url_encode_byte_array(shared_secret_raw);
// Send Bob's pub key to Alice
// Alice does
var bob_pubkey = await get_dh_key(bob_pubkey_jwk);
var shared_secret_raw2 = await derive_dh_shared_secret(alice_keypair.privateKey, bob_pubkey)
var shared_secret2 = base64url_encode_byte_array(shared_secret_raw2);
// both should be equal
console.log(shared_secret);
console.log(shared_secret2);
// Compression of DH public key
const { base64url_decode_to_byte_array } = WebUtil.Data_Util;
var x = alice_pubkey_jwk.x;
var y = alice_pubkey_jwk.y;
console.log("original x: ", x);
console.log("original y: ", y);
x = base64url_decode_to_byte_array(x);
y = base64url_decode_to_byte_array(y);
const { compress_ecc_coord, decompress_ecc_p256_coord } = WebUtil.Crypt_Util;
var compressed = compress_ecc_coord(x,y);
console.log(compressed);
var [x,y] = decompress_ecc_p256_coord(compressed);
x = base64url_encode_byte_array(x);
y = base64url_encode_byte_array(y);
console.log("decompressed x:", x);
console.log("decompressed y:", y);
// AES-256 GCM
const { symmetric_encrypt, symmetric_decrypt, generate_symmetric_key,
get_symmetric_key_from_byte_array,
get_symmetric_key_from_string } = WebUtil.Crypt_Util;
const { base64_decode_to_byte_array } = WebUtil.Data_Util;
// the Base64-URL encoded ECDH established shared_secret from above should work as an AES key
var key = await get_symmetric_key_from_string(shared_secret);
//OR: var key = await generate_symmetric_key();
//OR: var key = await get_symmetric_key_from_byte_array( Rand_Util.random_bytes(32) );
var nonce = await Rand_Util.random_bytes(12);
var ciphertext = await symmetric_encrypt(key, nonce, "hello world")
// send nonce and ciphertext over the network
var plaintext = await symmetric_decrypt(key, nonce, ciphertext);
if (plaintext == "hello world"){
console.log("valid");
}
// Key-encryption-Key (KEK)
const { wrap_symmetric_key, unwrap_symmetric_key } = WebUtil.Crypt_Util;
var kek = await generate_symmetric_key();
var wrapping_nonce = await Rand_Util.random_bytes(12);
var key_ciphertext = await wrap_symmetric_key(kek, wrapping_nonce, key);
console.log(key_ciphertext.length); // 48 bytes
// Store key_ciphertext and wrapping_nonce in a public location.
// They are byte arrays, so you may want to base64 encode them.
var key2 = await unwrap_symmetric_key(kek, wrapping_nonce, key_ciphertext);
var plaintext = await symmetric_decrypt(key2, nonce, ciphertext);
if (plaintext == "hello world"){
console.log("valid");
}
// derive key from arbitrary password
const { get_symmetric_key_from_password } = WebUtil.Crypt_Util;
var key = await get_symmetric_key_from_password("foo");
console.log("pbkdf2 key: ", await get_jwk(key));
// pack and unpack binary data
const {
encode_byte_arrays_in_dict,
decode_byte_arrays_in_dict } = WebUtil.Data_Util;
var package = encode_byte_arrays_in_dict({ 'foo': 'bar', nonce, key_ciphertext });
console.log(package);
package = decode_byte_arrays_in_dict(package);
console.log(package);
// Html Util -- download
const { prepare_download_link } = WebUtil.HTML_Util;
const { create_blob_from_dict,
create_blob_from_byte_array } = WebUtil.Data_Util;
var data = {'a':1,'b':2};
var blob = create_blob_from_dict(data);
prepare_download_link(blob, 'foo.txt', $download)
// big numbers
// NIST P-256 (secp256r1) 2^256 - 2^224 + 2^192 + 2^96 - 1
const prime = 2n**256n - 2n**224n + 2n**192n + 2n**96n - 1n;
console.log("prime: ", prime);
const { bigint_to_byte_array, byte_array_to_bigint,
byte_array_to_hex, hex_to_byte_array } = WebUtil.Data_Util;
console.log(bigint_to_byte_array('123456789012345678901234567890'));
console.log(bigint_to_byte_array(prime));
console.log("prime: ", byte_array_to_bigint(bigint_to_byte_array(prime)));
console.log(byte_array_to_hex(bigint_to_byte_array(prime)));
console.log(hex_to_byte_array(byte_array_to_hex(bigint_to_byte_array(prime))));
const { base58_encode_byte_array, base58_decode_to_byte_array } = WebUtil.Data_Util;
var data = Rand_Util.random_bytes(32);
console.log("original data: ", data);
var btc_encoded = base58_encode_byte_array(data);
console.log("bitcoin encoded data: ", btc_encoded);
console.log("decoded from base58: ", base58_decode_to_byte_array(btc_encoded));
//sha256
const { sha256_byte_array } = WebUtil.Crypt_Util;
const { string_to_byte_array } = WebUtil.Data_Util;
var hash_byte_array = await sha256_byte_array( string_to_byte_array("hello world") );
var expected_hex = "b94d27b9934d3e08a52e52d7da7dabfac484efe37a5380ee9088f7ace2efcde9";
var hash_hex = byte_array_to_hex(hash_byte_array);
if ( hash_hex == expected_hex) {
console.log("sha256 is valid");
}
// pack and unpack byte arrays
const { concatenate_byte_arrays, unpack_byte_array, byte_array_to_string } = WebUtil.Data_Util;
var part0 = string_to_byte_array("ab");
var part1 = string_to_byte_array("cde");
var part2 = string_to_byte_array("xyzw");
var packed = concatenate_byte_arrays(part0, part1, part2);
var parts = unpack_byte_array( packed, 2, 3, 4 ).map(x => byte_array_to_string(x))
console.log("parts:", parts);
var parts = unpack_byte_array( packed, 2, 3 ).map(x => byte_array_to_string(x))
console.log("parts:", parts);
var [part0, part1, part2] = unpack_byte_array( packed, 2, 3 ).map(x => byte_array_to_string(x))
console.log("parts:", part0, part1, part2);
// pack files
const { auto_pack_byte_arrays, auto_unpack_byte_arrays } = WebUtil.Data_Util;
packed = auto_pack_byte_arrays([
string_to_byte_array( "hello" ),
string_to_byte_array( "world!" )
])
console.log("auto packed:", packed);
var list = auto_unpack_byte_arrays( packed ).map( x => byte_array_to_string(x))
console.log("auto unpack result:", list);
const { pack_named_byte_arrays, unpack_named_byte_arrays } = WebUtil.Data_Util;
packed = pack_named_byte_arrays([
["hello", string_to_byte_array( "kuku" )],
["world!", string_to_byte_array( "reku!" )]
])
var list = unpack_named_byte_arrays( packed );
console.log("unpacked list", list);
const { Memory_Zip } = WebUtil.Data_Util;
var zipper = new Memory_Zip();
zipper.add( "foo/bar.txt", string_to_byte_array("hello") )
zipper.add( "foo/baz.txt", string_to_byte_array("world") )
var zipped = zipper.get_zipped();
var blob = create_blob_from_byte_array(zipped);
prepare_download_link(blob, 'foo.zip', $download_zip)
}
async function directory_handler(event) {
var [folders, individual_files] = WebUtil.HTML_Util.group_files_by_folder(event.target.files);
for (file in individual_files){
encrypt_file(file);
}
for (var folder in folders){
encrypt_folder(folder, folders[folder])
}
}
async function file_handler(event) {
var file = event.target.files[0];
encrypt_file(file);
}
async function drop_handler(ev) {
console.log('File(s) dropped');
var files = [];
window.tmp2 = event.dataTransfer;
// Prevent default behavior (Prevent file from being opened)
ev.preventDefault();
const { get_dropped_files } = WebUtil.HTML_Util;
//var files = get_dropped_files(ev);
var files = await get_dropped_files(ev);
console.log("Got files:", files);
var file = files[0];
//encrypt_file(file);
}
async function encrypt_file(file) {
const { read_file_as_byte_array } = WebUtil.Data_Util;
const { create_blob_from_byte_array } = WebUtil.Data_Util;
var byte_array = await read_file_as_byte_array( file );
var blob = await create_blob_from_byte_array( byte_array );
//TODO: encrypt blob here
const { prepare_download_link } = WebUtil.HTML_Util;
var link = document.createElement('a');
link.innerText = 'download ' + file.name;
document.body.appendChild(link);
prepare_download_link(blob, file.name, link)
}
async function encrypt_folder(name, list){
console.log("encrypt_folder:", name, list);
const { read_file_as_byte_array, string_to_byte_array, Memory_Zip } = WebUtil.Data_Util;
const { create_blob_from_byte_array, pack_named_byte_arrays } = WebUtil.Data_Util;
var items = [];
var zipper = new Memory_Zip();
for (var file of list){
var path = file.webkitRelativePath;
console.log("path: ", path, file);
var byte_array = await read_file_as_byte_array( file );
zipper.add( path, byte_array, file.lastModified )
}
var packed = zipper.get_zipped();
console.log("packed: ", packed);
// TODO: encrypt packed byte array here
var blob = await create_blob_from_byte_array( packed );
const { prepare_download_link } = WebUtil.HTML_Util;
var link = document.createElement('a');
link.innerText = `download ${name}.zip`
document.body.appendChild(link);
prepare_download_link(blob, name+".zip", link)
}
function dragover_handler(ev) {
console.log('File(s) in drop zone');
// Prevent default behavior (Prevent file from being opened)
ev.preventDefault();
}
</script>
<script src="./rand_util.js"></script>
<script src="./url_util.js"></script>
<script src="./html_util.js"></script>
<script src="./date_util.js"></script>
<script src="./data_util.js"></script>
<script src="./net_util.js"></script>
<script src="./crypt_util.js"></script>
<script src="./data_util.js"></script>
</body>