-
Notifications
You must be signed in to change notification settings - Fork 7
/
jwsjs.gs
831 lines (757 loc) · 29 KB
/
jwsjs.gs
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
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
/** @preserve
* jwsjs.js - JSON Web Signature JSON Serialization (JWSJS) Class
*
* version: 2.0.0 (2013 Jul 20)
*
* Copyright (c) 2010-2013 Kenji Urushima (kenji.urushima@gmail.com)
*
* This software is licensed under the terms of the MIT License.
* http://kjur.github.com/jsjws/license/
*
* The above copyright and license notice shall be
* included in all copies or substantial portions of the Software.
*/
/**
* @fileOverview
* @name jwsjs-2.0.js
* @author Kenji Urushima kenji.urushima@gmail.com
* @version 2.0.0 (2013 Jul 20)
* @since jsjws 1.2
* @license <a href="http://kjur.github.io/jsjws/license/">MIT License</a>
*/
if (typeof KJUR == "undefined" || !KJUR) KJUR = {};
if (typeof KJUR.jws == "undefined" || !KJUR.jws) KJUR.jws = {};
/**
* JSON Web Signature JSON Serialization (JWSJS) class.<br/>
* @class JSON Web Signature JSON Serialization (JWSJS) class
* @name KJUR.jws.JWSJS
* @property {array of String} aHeader array of Encoded JWS Headers
* @property {String} sPayload Encoded JWS payload
* @property {array of String} aSignature array of Encoded JWS signature value
* @author Kenji Urushima
* @version 1.0 (18 May 2012)
* @requires base64x.js, json-sans-eval.js, jws.js and jsrsasign library
* @see <a href="http://kjur.github.com/jsjws/">'jwjws'(JWS JavaScript Library) home page http://kjur.github.com/jsjws/</a>
* @see <a href="http://kjur.github.com/jsrsasigns/">'jwrsasign'(RSA Sign JavaScript Library) home page http://kjur.github.com/jsrsasign/</a>
* @see <a href="http://tools.ietf.org/html/draft-jones-json-web-signature-json-serialization-01">IETF I-D JSON Web Signature JSON Serialization (JWS-JS) specification</a>
*/
KJUR.jws.JWSJS = function() {
this.aHeader = [];
this.sPayload = "";
this.aSignature = [];
// == initialize ===================================================================
/**
* (re-)initialize this object.<br/>
* @name init
* @memberOf KJUR.jws.JWSJS
* @function
*/
this.init = function() {
this.aHeader = [];
this.sPayload = "";
this.aSignature = [];
};
/**
* (re-)initialize and set first signature with JWS.<br/>
* @name initWithJWS
* @memberOf KJUR.jws.JWSJS
* @param {String} sJWS JWS signature to set
* @function
*/
this.initWithJWS = function(sJWS) {
this.init();
var jws = new KJUR.jws.JWS();
jws.parseJWS(sJWS);
this.aHeader.push(jws.parsedJWS.headB64U);
this.sPayload = jws.parsedJWS.payloadB64U;
this.aSignature.push(jws.parsedJWS.sigvalB64U);
};
// == add signature ===================================================================
/**
* add a signature to existing JWS-JS by Header and PKCS1 private key.<br/>
* @name addSignatureByHeaderKey
* @memberOf KJUR.jws.JWSJS
* @function
* @param {String} sHead JSON string of JWS Header for adding signature.
* @param {String} sPemPrvKey string of PKCS1 private key
*/
this.addSignatureByHeaderKey = function(sHead, sPemPrvKey) {
var sPayload = b64utoutf8(this.sPayload);
var jws = new KJUR.jws.JWS();
var sJWS = jws.generateJWSByP1PrvKey(sHead, sPayload, sPemPrvKey);
this.aHeader.push(jws.parsedJWS.headB64U);
this.aSignature.push(jws.parsedJWS.sigvalB64U);
};
/**
* add a signature to existing JWS-JS by Header, Payload and PKCS1 private key.<br/>
* This is to add first signature to JWS-JS object.
* @name addSignatureByHeaderPayloadKey
* @memberOf KJUR.jws.JWSJS
* @function
* @param {String} sHead JSON string of JWS Header for adding signature.
* @param {String} sPayload string of JWS Payload for adding signature.
* @param {String} sPemPrvKey string of PKCS1 private key
*/
this.addSignatureByHeaderPayloadKey = function(sHead, sPayload, sPemPrvKey) {
var jws = new KJUR.jws.JWS();
var sJWS = jws.generateJWSByP1PrvKey(sHead, sPayload, sPemPrvKey);
this.aHeader.push(jws.parsedJWS.headB64U);
this.sPayload = jws.parsedJWS.payloadB64U;
this.aSignature.push(jws.parsedJWS.sigvalB64U);
};
// == verify signature ===================================================================
/**
* verify JWS-JS object with array of certificate string.<br/>
* @name verifyWithCerts
* @memberOf KJUR.jws.JWSJS
* @function
* @param {array of String} aCert array of string for X.509 PEM certificate.
* @return 1 if signature is valid.
* @throw if JWS-JS signature is invalid.
*/
this.verifyWithCerts = function(aCert) {
if (this.aHeader.length != aCert.length)
throw "num headers does not match with num certs";
if (this.aSignature.length != aCert.length)
throw "num signatures does not match with num certs";
var payload = this.sPayload;
var errMsg = "";
for (var i = 0; i < aCert.length; i++) {
var cert = aCert[i];
var header = this.aHeader[i];
var sig = this.aSignature[i];
var sJWS = header + "." + payload + "." + sig;
var jws = new KJUR.jws.JWS();
try {
var result = jws.verifyJWSByPemX509Cert(sJWS, cert);
if (result != 1) {
errMsg += (i + 1) + "th signature unmatch. ";
}
} catch (ex) {
errMsg += (i + 1) + "th signature fail(" + ex + "). ";
}
}
if (errMsg == "") {
return 1;
} else {
throw errMsg;
}
};
/**
* read JWS-JS string.<br/>
* @name raedJWSJS
* @memberOf KJUR.jws.JWSJS
* @function
* @param {String} string of JWS-JS to load.
* @throw if sJWSJS is malformed or not JSON string.
*/
this.readJWSJS = function(sJWSJS) {
var jws = new KJUR.jws.JWS();
var oJWSJS = jws.readSafeJSONString(sJWSJS);
if (oJWSJS == null) throw "argument is not JSON string: " + sJWSJS;
this.aHeader = oJWSJS.headers;
this.sPayload = oJWSJS.payload;
this.aSignature = oJWSJS.signatures;
};
// == utility ===================================================================
/**
* get JSON object for this JWS-JS object.<br/>
* @name getJSON
* @memberOf KJUR.jws.JWSJS
* @function
*/
this.getJSON = function() {
return { "headers": this.aHeader,
"payload": this.sPayload,
"signatures": this.aSignature };
};
/**
* check if this JWS-JS object is empty.<br/>
* @name isEmpty
* @memberOf KJUR.jws.JWSJS
* @function
* @return 1 if there is no signatures in this object, otherwise 0.
*/
this.isEmpty = function() {
if (this.aHeader.length == 0) return 1;
return 0;
};
};
/*! jws-2.0.3 (c) 2012 Kenji Urushima | kjur.github.com/jsjws/license
*/
/*
* jws.js - JSON Web Signature Class
*
* version: 2.0.3 (2013 Jul 30)
*
* Copyright (c) 2010-2013 Kenji Urushima (kenji.urushima@gmail.com)
*
* This software is licensed under the terms of the MIT License.
* http://kjur.github.com/jsjws/license/
*
* The above copyright and license notice shall be
* included in all copies or substantial portions of the Software.
*/
/**
* @fileOverview
* @name jws-2.0.js
* @author Kenji Urushima kenji.urushima@gmail.com
* @version 2.0.3 (2013-Jul-30)
* @since jsjws 1.0
* @license <a href="http://kjur.github.io/jsjws/license/">MIT License</a>
*/
if (typeof KJUR == "undefined" || !KJUR) KJUR = {};
if (typeof KJUR.jws == "undefined" || !KJUR.jws) KJUR.jws = {};
/**
* JSON Web Signature(JWS) class.<br/>
* @class JSON Web Signature(JWS) class
* @property {Dictionary} parsedJWS This property is set after JWS signature verification. <br/>
* Following "parsedJWS_*" properties can be accessed as "parsedJWS.*" because of
* JsDoc restriction.
* @property {String} parsedJWS_headB64U string of Encrypted JWS Header
* @property {String} parsedJWS_payloadB64U string of Encrypted JWS Payload
* @property {String} parsedJWS_sigvalB64U string of Encrypted JWS signature value
* @property {String} parsedJWS_si string of Signature Input
* @property {String} parsedJWS_sigvalH hexadecimal string of JWS signature value
* @property {String} parsedJWS_sigvalBI BigInteger(defined in jsbn.js) object of JWS signature value
* @property {String} parsedJWS_headS string of decoded JWS Header
* @property {String} parsedJWS_headS string of decoded JWS Payload
* @author Kenji Urushima
* @version 1.1 (07 May 2012)
* @requires base64x.js, json-sans-eval.js and jsrsasign library
* @see <a href="http://kjur.github.com/jsjws/">'jwjws'(JWS JavaScript Library) home page http://kjur.github.com/jsjws/</a>
* @see <a href="http://kjur.github.com/jsrsasigns/">'jwrsasign'(RSA Sign JavaScript Library) home page http://kjur.github.com/jsrsasign/</a>
*/
KJUR.jws.JWS = function() {
// === utility =============================================================
/**
* check whether a String "s" is a safe JSON string or not.<br/>
* If a String "s" is a malformed JSON string or an other object type
* this returns 0, otherwise this returns 1.
* @name isSafeJSONString
* @memberOf KJUR.jws.JWS
* @function
* @param {String} s JSON string
* @return {Number} 1 or 0
*/
this.isSafeJSONString = function(s, h, p) {
var o = null;
try {
o = jsonParse(s);
if (typeof o != "object") return 0;
if (o.constructor === Array) return 0;
if (h) h[p] = o;
return 1;
} catch (ex) {
return 0;
}
};
/**
* read a String "s" as JSON object if it is safe.<br/>
* If a String "s" is a malformed JSON string or not JSON string,
* this returns null, otherwise returns JSON object.
* @name readSafeJSONString
* @memberOf KJUR.jws.JWS
* @function
* @param {String} s JSON string
* @return {Object} JSON object or null
* @since 1.1.1
*/
this.readSafeJSONString = function(s) {
var o = null;
try {
o = jsonParse(s);
if (typeof o != "object") return null;
if (o.constructor === Array) return null;
return o;
} catch (ex) {
return null;
}
};
/**
* get Encoed Signature Value from JWS string.<br/>
* @name getEncodedSignatureValueFromJWS
* @memberOf KJUR.jws.JWS
* @function
* @param {String} sJWS JWS signature string to be verified
* @return {String} string of Encoded Signature Value
* @throws if sJWS is not comma separated string such like "Header.Payload.Signature".
*/
this.getEncodedSignatureValueFromJWS = function(sJWS) {
if (sJWS.match(/^[^.]+\.[^.]+\.([^.]+)$/) == null) {
throw "JWS signature is not a form of 'Head.Payload.SigValue'.";
}
return RegExp.$1;
};
/**
* parse JWS string and set public property 'parsedJWS' dictionary.<br/>
* @name parseJWS
* @memberOf KJUR.jws.JWS
* @function
* @param {String} sJWS JWS signature string to be parsed.
* @throws if sJWS is not comma separated string such like "Header.Payload.Signature".
* @throws if JWS Header is a malformed JSON string.
* @since 1.1
*/
this.parseJWS = function(sJWS, sigValNotNeeded) {
if ((this.parsedJWS !== undefined) &&
(sigValNotNeeded || (this.parsedJWS.sigvalH !== undefined))) {
return;
}
if (sJWS.match(/^([^.]+)\.([^.]+)\.([^.]+)$/) == null) {
throw "JWS signature is not a form of 'Head.Payload.SigValue'.";
}
var b6Head = RegExp.$1;
var b6Payload = RegExp.$2;
var b6SigVal = RegExp.$3;
var sSI = b6Head + "." + b6Payload;
this.parsedJWS = {};
this.parsedJWS.headB64U = b6Head;
this.parsedJWS.payloadB64U = b6Payload;
this.parsedJWS.sigvalB64U = b6SigVal;
this.parsedJWS.si = sSI;
if (!sigValNotNeeded) {
var hSigVal = b64utohex(b6SigVal);
var biSigVal = parseBigInt(hSigVal, 16);
this.parsedJWS.sigvalH = hSigVal;
this.parsedJWS.sigvalBI = biSigVal;
}
var sHead = b64utoutf8(b6Head);
var sPayload = b64utoutf8(b6Payload);
this.parsedJWS.headS = sHead;
this.parsedJWS.payloadS = sPayload;
if (! this.isSafeJSONString(sHead, this.parsedJWS, 'headP'))
throw "malformed JSON string for JWS Head: " + sHead;
};
// ==== JWS Validation =========================================================
function _getSignatureInputByString(sHead, sPayload) {
return utf8tob64u(sHead) + "." + utf8tob64u(sPayload);
};
function _getHashBySignatureInput(sSignatureInput, sHashAlg) {
var hashfunc = function(s) { return KJUR.crypto.Util.hashString(s, sHashAlg); };
if (hashfunc == null) throw "hash function not defined in jsrsasign: " + sHashAlg;
return hashfunc(sSignatureInput);
};
function _jws_verifySignature(sHead, sPayload, hSig, hN, hE) {
var sSignatureInput = _getSignatureInputByString(sHead, sPayload);
var biSig = parseBigInt(hSig, 16);
return _rsasign_verifySignatureWithArgs(sSignatureInput, biSig, hN, hE);
};
/**
* verify JWS signature with naked RSA public key.<br/>
* This only supports "RS256" and "RS512" algorithm.
* @name verifyJWSByNE
* @memberOf KJUR.jws.JWS
* @function
* @param {String} sJWS JWS signature string to be verified
* @param {String} hN hexadecimal string for modulus of RSA public key
* @param {String} hE hexadecimal string for public exponent of RSA public key
* @return {String} returns 1 when JWS signature is valid, otherwise returns 0
* @throws if sJWS is not comma separated string such like "Header.Payload.Signature".
* @throws if JWS Header is a malformed JSON string.
*/
this.verifyJWSByNE = function(sJWS, hN, hE) {
this.parseJWS(sJWS);
return _rsasign_verifySignatureWithArgs(this.parsedJWS.si, this.parsedJWS.sigvalBI, hN, hE);
};
/**
* verify JWS signature with RSA public key.<br/>
* This only supports "RS256", "RS512", "PS256" and "PS512" algorithms.
* @name verifyJWSByKey
* @memberOf KJUR.jws.JWS
* @function
* @param {String} sJWS JWS signature string to be verified
* @param {RSAKey} key RSA public key
* @return {Boolean} returns true when JWS signature is valid, otherwise returns false
* @throws if sJWS is not comma separated string such like "Header.Payload.Signature".
* @throws if JWS Header is a malformed JSON string.
*/
this.verifyJWSByKey = function(sJWS, key) {
this.parseJWS(sJWS);
var hashAlg = _jws_getHashAlgFromParsedHead(this.parsedJWS.headP);
var isPSS = this.parsedJWS.headP['alg'].substr(0, 2) == "PS";
if (key.hashAndVerify) {
return key.hashAndVerify(hashAlg,
new Buffer(this.parsedJWS.si, 'utf8').toString('base64'),
b64utob64(this.parsedJWS.sigvalB64U),
'base64',
isPSS);
} else if (isPSS) {
return key.verifyStringPSS(this.parsedJWS.si,
this.parsedJWS.sigvalH, hashAlg);
} else {
return key.verifyString(this.parsedJWS.si,
this.parsedJWS.sigvalH);
}
};
/**
* verify JWS signature by PEM formatted X.509 certificate.<br/>
* This only supports "RS256" and "RS512" algorithm.
* @name verifyJWSByPemX509Cert
* @memberOf KJUR.jws.JWS
* @function
* @param {String} sJWS JWS signature string to be verified
* @param {String} sPemX509Cert string of PEM formatted X.509 certificate
* @return {String} returns 1 when JWS signature is valid, otherwise returns 0
* @throws if sJWS is not comma separated string such like "Header.Payload.Signature".
* @throws if JWS Header is a malformed JSON string.
* @since 1.1
*/
this.verifyJWSByPemX509Cert = function(sJWS, sPemX509Cert) {
this.parseJWS(sJWS);
var x509 = new X509();
x509.readCertPEM(sPemX509Cert);
return x509.subjectPublicKeyRSA.verifyString(this.parsedJWS.si, this.parsedJWS.sigvalH);
};
// ==== JWS Generation =========================================================
function _jws_getHashAlgFromParsedHead(head) {
var sigAlg = head["alg"];
var hashAlg = "";
if (sigAlg != "RS256" && sigAlg != "RS512" &&
sigAlg != "PS256" && sigAlg != "PS512")
throw "JWS signature algorithm not supported: " + sigAlg;
if (sigAlg.substr(2) == "256") hashAlg = "sha256";
if (sigAlg.substr(2) == "512") hashAlg = "sha512";
return hashAlg;
};
function _jws_getHashAlgFromHead(sHead) {
return _jws_getHashAlgFromParsedHead(jsonParse(sHead));
};
function _jws_generateSignatureValueBySI_NED(sHead, sPayload, sSI, hN, hE, hD) {
var rsa = new RSAKey();
rsa.setPrivate(hN, hE, hD);
var hashAlg = _jws_getHashAlgFromHead(sHead);
var sigValue = rsa.signString(sSI, hashAlg);
return sigValue;
};
function _jws_generateSignatureValueBySI_Key(sHead, sPayload, sSI, key, head) {
var hashAlg = null;
if (typeof head == "undefined") {
hashAlg = _jws_getHashAlgFromHead(sHead);
} else {
hashAlg = _jws_getHashAlgFromParsedHead(head);
}
var isPSS = head['alg'].substr(0, 2) == "PS";
if (key.hashAndSign) {
return b64tob64u(key.hashAndSign(hashAlg, sSI, 'binary', 'base64', isPSS));
} else if (isPSS) {
return hextob64u(key.signStringPSS(sSI, hashAlg));
} else {
return hextob64u(key.signString(sSI, hashAlg));
}
};
function _jws_generateSignatureValueByNED(sHead, sPayload, hN, hE, hD) {
var sSI = _getSignatureInputByString(sHead, sPayload);
return _jws_generateSignatureValueBySI_NED(sHead, sPayload, sSI, hN, hE, hD);
};
/**
* generate JWS signature by Header, Payload and a naked RSA private key.<br/>
* This only supports "RS256" and "RS512" algorithm.
* @name generateJWSByNED
* @memberOf KJUR.jws.JWS
* @function
* @param {String} sHead string of JWS Header
* @param {String} sPayload string of JWS Payload
* @param {String} hN hexadecimal string for modulus of RSA public key
* @param {String} hE hexadecimal string for public exponent of RSA public key
* @param {String} hD hexadecimal string for private exponent of RSA private key
* @return {String} JWS signature string
* @throws if sHead is a malformed JSON string.
* @throws if supported signature algorithm was not specified in JSON Header.
*/
this.generateJWSByNED = function(sHead, sPayload, hN, hE, hD) {
if (! this.isSafeJSONString(sHead)) throw "JWS Head is not safe JSON string: " + sHead;
var sSI = _getSignatureInputByString(sHead, sPayload);
var hSigValue = _jws_generateSignatureValueBySI_NED(sHead, sPayload, sSI, hN, hE, hD);
var b64SigValue = hextob64u(hSigValue);
this.parsedJWS = {};
this.parsedJWS.headB64U = sSI.split(".")[0];
this.parsedJWS.payloadB64U = sSI.split(".")[1];
this.parsedJWS.sigvalB64U = b64SigValue;
return sSI + "." + b64SigValue;
};
/**
* generate JWS signature by Header, Payload and a RSA private key.<br/>
* This only supports "RS256", "RS512", "PS256" and "PS512" algorithms.
* @name generateJWSByKey
* @memberOf KJUR.jws.JWS
* @function
* @param {String} sHead string of JWS Header
* @param {String} sPayload string of JWS Payload
* @param {RSAKey} RSA private key
* @return {String} JWS signature string
* @throws if sHead is a malformed JSON string.
* @throws if supported signature algorithm was not specified in JSON Header.
*/
this.generateJWSByKey = function(sHead, sPayload, key) {
var obj = {};
if (!this.isSafeJSONString(sHead, obj, 'headP'))
throw "JWS Head is not safe JSON string: " + sHead;
var sSI = _getSignatureInputByString(sHead, sPayload);
var b64SigValue = _jws_generateSignatureValueBySI_Key(sHead, sPayload, sSI, key, obj.headP);
this.parsedJWS = {};
this.parsedJWS.headB64U = sSI.split(".")[0];
this.parsedJWS.payloadB64U = sSI.split(".")[1];
this.parsedJWS.sigvalB64U = b64SigValue;
return sSI + "." + b64SigValue;
};
// === sign with PKCS#1 RSA private key =====================================================
function _jws_generateSignatureValueBySI_PemPrvKey(sHead, sPayload, sSI, sPemPrvKey) {
var rsa = new RSAKey();
rsa.readPrivateKeyFromPEMString(sPemPrvKey);
var hashAlg = _jws_getHashAlgFromHead(sHead);
var sigValue = rsa.signString(sSI, hashAlg);
return sigValue;
};
/**
* generate JWS signature by Header, Payload and a PEM formatted PKCS#1 RSA private key.<br/>
* This only supports "RS256" and "RS512" algorithm.
* @name generateJWSByP1PrvKey
* @memberOf KJUR.jws.JWS
* @function
* @param {String} sHead string of JWS Header
* @param {String} sPayload string of JWS Payload
* @param {String} string for sPemPrvKey PEM formatted PKCS#1 RSA private key<br/>
* Heading and trailing space characters in PEM key will be ignored.
* @return {String} JWS signature string
* @throws if sHead is a malformed JSON string.
* @throws if supported signature algorithm was not specified in JSON Header.
* @since 1.1
*/
this.generateJWSByP1PrvKey = function(sHead, sPayload, sPemPrvKey) {
if (! this.isSafeJSONString(sHead)) throw "JWS Head is not safe JSON string: " + sHead;
var sSI = _getSignatureInputByString(sHead, sPayload);
var hSigValue = _jws_generateSignatureValueBySI_PemPrvKey(sHead, sPayload, sSI, sPemPrvKey);
var b64SigValue = hextob64u(hSigValue);
this.parsedJWS = {};
this.parsedJWS.headB64U = sSI.split(".")[0];
this.parsedJWS.payloadB64U = sSI.split(".")[1];
this.parsedJWS.sigvalB64U = b64SigValue;
return sSI + "." + b64SigValue;
};
};
/*! Mike Samuel (c) 2009 | code.google.com/p/json-sans-eval
*/
// This source code is free for use in the public domain.
// NO WARRANTY EXPRESSED OR IMPLIED. USE AT YOUR OWN RISK.
// http://code.google.com/p/json-sans-eval/
/**
* Parses a string of well-formed JSON text.
*
* If the input is not well-formed, then behavior is undefined, but it is
* deterministic and is guaranteed not to modify any object other than its
* return value.
*
* This does not use `eval` so is less likely to have obscure security bugs than
* json2.js.
* It is optimized for speed, so is much faster than json_parse.js.
*
* This library should be used whenever security is a concern (when JSON may
* come from an untrusted source), speed is a concern, and erroring on malformed
* JSON is *not* a concern.
*
* Pros Cons
* +-----------------------+-----------------------+
* json_sans_eval.js | Fast, secure | Not validating |
* +-----------------------+-----------------------+
* json_parse.js | Validating, secure | Slow |
* +-----------------------+-----------------------+
* json2.js | Fast, some validation | Potentially insecure |
* +-----------------------+-----------------------+
*
* json2.js is very fast, but potentially insecure since it calls `eval` to
* parse JSON data, so an attacker might be able to supply strange JS that
* looks like JSON, but that executes arbitrary javascript.
* If you do have to use json2.js with untrusted data, make sure you keep
* your version of json2.js up to date so that you get patches as they're
* released.
*
* @param {string} json per RFC 4627
* @param {function (this:Object, string, *):*} opt_reviver optional function
* that reworks JSON objects post-parse per Chapter 15.12 of EcmaScript3.1.
* If supplied, the function is called with a string key, and a value.
* The value is the property of 'this'. The reviver should return
* the value to use in its place. So if dates were serialized as
* {@code { "type": "Date", "time": 1234 }}, then a reviver might look like
* {@code
* function (key, value) {
* if (value && typeof value === 'object' && 'Date' === value.type) {
* return new Date(value.time);
* } else {
* return value;
* }
* }}.
* If the reviver returns {@code undefined} then the property named by key
* will be deleted from its container.
* {@code this} is bound to the object containing the specified property.
* @return {Object|Array}
* @author Mike Samuel <mikesamuel@gmail.com>
*/
var jsonParse = (function () {
var number
= '(?:-?\\b(?:0|[1-9][0-9]*)(?:\\.[0-9]+)?(?:[eE][+-]?[0-9]+)?\\b)';
var oneChar = '(?:[^\\0-\\x08\\x0a-\\x1f\"\\\\]'
+ '|\\\\(?:[\"/\\\\bfnrt]|u[0-9A-Fa-f]{4}))';
var string = '(?:\"' + oneChar + '*\")';
// Will match a value in a well-formed JSON file.
// If the input is not well-formed, may match strangely, but not in an unsafe
// way.
// Since this only matches value tokens, it does not match whitespace, colons,
// or commas.
var jsonToken = new RegExp(
'(?:false|true|null|[\\{\\}\\[\\]]'
+ '|' + number
+ '|' + string
+ ')', 'g');
// Matches escape sequences in a string literal
var escapeSequence = new RegExp('\\\\(?:([^u])|u(.{4}))', 'g');
// Decodes escape sequences in object literals
var escapes = {
'"': '"',
'/': '/',
'\\': '\\',
'b': '\b',
'f': '\f',
'n': '\n',
'r': '\r',
't': '\t'
};
function unescapeOne(_, ch, hex) {
return ch ? escapes[ch] : String.fromCharCode(parseInt(hex, 16));
}
// A non-falsy value that coerces to the empty string when used as a key.
var EMPTY_STRING = new String('');
var SLASH = '\\';
// Constructor to use based on an open token.
var firstTokenCtors = { '{': Object, '[': Array };
var hop = Object.hasOwnProperty;
return function (json, opt_reviver) {
// Split into tokens
var toks = json.match(jsonToken);
// Construct the object to return
var result;
var tok = toks[0];
var topLevelPrimitive = false;
if ('{' === tok) {
result = {};
} else if ('[' === tok) {
result = [];
} else {
// The RFC only allows arrays or objects at the top level, but the JSON.parse
// defined by the EcmaScript 5 draft does allow strings, booleans, numbers, and null
// at the top level.
result = [];
topLevelPrimitive = true;
}
// If undefined, the key in an object key/value record to use for the next
// value parsed.
var key;
// Loop over remaining tokens maintaining a stack of uncompleted objects and
// arrays.
var stack = [result];
for (var i = 1 - topLevelPrimitive, n = toks.length; i < n; ++i) {
tok = toks[i];
var cont;
switch (tok.charCodeAt(0)) {
default: // sign or digit
cont = stack[0];
cont[key || cont.length] = +(tok);
key = void 0;
break;
case 0x22: // '"'
tok = tok.substring(1, tok.length - 1);
if (tok.indexOf(SLASH) !== -1) {
tok = tok.replace(escapeSequence, unescapeOne);
}
cont = stack[0];
if (!key) {
if (cont instanceof Array) {
key = cont.length;
} else {
key = tok || EMPTY_STRING; // Use as key for next value seen.
break;
}
}
cont[key] = tok;
key = void 0;
break;
case 0x5b: // '['
cont = stack[0];
stack.unshift(cont[key || cont.length] = []);
key = void 0;
break;
case 0x5d: // ']'
stack.shift();
break;
case 0x66: // 'f'
cont = stack[0];
cont[key || cont.length] = false;
key = void 0;
break;
case 0x6e: // 'n'
cont = stack[0];
cont[key || cont.length] = null;
key = void 0;
break;
case 0x74: // 't'
cont = stack[0];
cont[key || cont.length] = true;
key = void 0;
break;
case 0x7b: // '{'
cont = stack[0];
stack.unshift(cont[key || cont.length] = {});
key = void 0;
break;
case 0x7d: // '}'
stack.shift();
break;
}
}
// Fail if we've got an uncompleted object.
if (topLevelPrimitive) {
if (stack.length !== 1) { throw new Error(); }
result = result[0];
} else {
if (stack.length) { throw new Error(); }
}
if (opt_reviver) {
// Based on walk as implemented in http://www.json.org/json2.js
var walk = function (holder, key) {
var value = holder[key];
if (value && typeof value === 'object') {
var toDelete = null;
for (var k in value) {
if (hop.call(value, k) && value !== holder) {
// Recurse to properties first. This has the effect of causing
// the reviver to be called on the object graph depth-first.
// Since 'this' is bound to the holder of the property, the
// reviver can access sibling properties of k including ones
// that have not yet been revived.
// The value returned by the reviver is used in place of the
// current value of property k.
// If it returns undefined then the property is deleted.
var v = walk(value, k);
if (v !== void 0) {
value[k] = v;
} else {
// Deleting properties inside the loop has vaguely defined
// semantics in ES3 and ES3.1.
if (!toDelete) { toDelete = []; }
toDelete.push(k);
}
}
}
if (toDelete) {
for (var i = toDelete.length; --i >= 0;) {
delete value[toDelete[i]];
}
}
}
return opt_reviver.call(holder, key, value);
};
result = walk({ '': result }, '');
}
return result;
};
})();