···1ISC License
23-Copyright (c) 2008-2024 Lapo Luchini <lapo@lapo.it>
45Permission to use, copy, modify, and/or distribute this software for any
6purpose with or without fee is hereby granted, provided that the above
···1ISC License
23+Copyright (c) 2008-2025 Lapo Luchini <lapo@lapo.it>
45Permission to use, copy, modify, and/or distribute this software for any
6purpose with or without fee is hereby granted, provided that the above
+51-22
README.md
···34asn1js is a JavaScript generic ASN.1 parser/decoder that can decode any valid ASN.1 DER or BER structures.
56-An example page that can decode Base64-encoded (raw base64, PEM armoring and `begin-base64` are recognized) or Hex-encoded (or local files with some browsers) is included and can be used both [online on the official website](https://lapo.it/asn1js/) or [offline (ZIP file)](https://lapo.it/asn1js/asn1js.zip).
78-Usage with `npm` / `yarn`
9--------------------------
1011This package can be installed with either npm or yarn via the following commands:
1213```sh
14npm install @lapo/asn1js
15-# or with yarn
016yarn add @lapo/asn1js
17```
1819-Assuming a standard javascript bundler is setup you can import it like so:
2021```js
22-const ASN1 = require('@lapo/asn1js');
23-// or with ES modules
24-import ASN1 from '@lapo/asn1js';
25```
2627A submodule of this package can also be imported:
2829```js
30-const Hex = require('@lapo/asn1js/hex');
31-// or with ES modules
32-import Hex from '@lapo/asn1js/hex';
000000000000000000033```
3435-Usage with RequireJS
36--------------------
3738-Can be [tested on JSFiddle](https://jsfiddle.net/lapo/tmdq35ug/).
3940```html
41-<script type="text/javascript" src="https://unpkg.com/requirejs/require.js"></script>
42<script>
43-require([
44- 'https://unpkg.com/@lapo/asn1js/asn1.js',
45- 'https://unpkg.com/@lapo/asn1js/hex.js'
46-], function(ASN1, Hex) {
47- document.body.innerText = ASN1.decode(Hex.decode('06032B6570')).content();
48-});
49</script>
50```
510000000000000052ISC license
53-----------
5455-ASN.1 JavaScript decoder Copyright (c) 2008-2024 Lapo Luchini <lapo@lapo.it>
5657Permission to use, copy, modify, and/or distribute this software for any purpose with or without fee is hereby granted, provided that the above copyright notice and this permission notice appear in all copies.
58···66- extended tag support added by [Pรฉter Budai](https://www.peterbudai.eu/)
67- patches by [Gergely Nagy](https://github.com/ngg)
68- Relative OID support added by [Mistial Developer](https://github.com/mistial-dev)
69-- dark mode support added by [Oliver Burgmaier](https://github.com/olibu/)
70- patches by [Nicolai Sรธborg](https://github.com/NicolaiSoeborg)
7172links
···34asn1js is a JavaScript generic ASN.1 parser/decoder that can decode any valid ASN.1 DER or BER structures.
56+An example page that can decode Base64-encoded (raw base64, PEM armoring and `begin-base64` are recognized) or Hex-encoded (or local files with some browsers) is included and can be used both [online on the official website](https://asn1js.eu/) or [offline (ZIP file)](https://lapo.it/asn1js/asn1js.zip) by opening `index-local.html`.
78+Usage with `nodejs`
9+-------------------
1011This package can be installed with either npm or yarn via the following commands:
1213```sh
14npm install @lapo/asn1js
15+# or other tools
16+pnpm install @lapo/asn1js
17yarn add @lapo/asn1js
18```
1920+You can import the classes like this:
2122```js
23+import { ASN1 } from '@lapo/asn1js';
0024```
2526A submodule of this package can also be imported:
2728```js
29+import { Hex } from '@lapo/asn1js/hex.js';
30+```
31+32+If your code is still not using ES6 Modules (and is using CommonJS) you can `require` it normally [since NodeJS 22](https://joyeecheung.github.io/blog/2024/03/18/require-esm-in-node-js/) (with parameter `--experimental-require-module`):
33+34+```js
35+const
36+ { ASN1 } = require('@lapo/asn1js'),
37+ { Hex } = require('@lapo/asn1js/hex.js');
38+console.log(ASN1.decode(Hex.decode('06032B6570')).content());
39+```
40+41+On older NodeJS you instead need to use async `import`:
42+43+```js
44+async function main() {
45+ const
46+ { ASN1 } = await import('@lapo/asn1js'),
47+ { Hex } = await import('@lapo/asn1js/hex.js');
48+ console.log(ASN1.decode(Hex.decode('06032B6570')).content());
49+}
50+main();
51```
5253+Usage on the web
54--------------------
5556+Can be [tested on JSFiddle](https://jsfiddle.net/lapo/y6t2wo7q/).
5758```html
059<script>
60+import { ASN1 } from 'https://unpkg.com/@lapo/asn1js@2.0.0/asn1.js';
61+import { Hex } from 'https://unpkg.com/@lapo/asn1js@2.0.0/hex.js';
62+63+document.body.innerText = ASN1.decode(Hex.decode('06032B6570')).content();
0064</script>
65```
6667+Local usage
68+--------------------
69+70+Since unfortunately ESM modules are not working on `file:` protocol due to [CORS issues](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Modules#other_differences_between_modules_and_standard_scripts), there is a bundled [single-file version working locally](https://asn1js.eu/index-local.html). It doesn't work online (due to [CSP](https://developer.mozilla.org/en-US/docs/Web/HTTP/CSP) restrictions about inline content) but can be saved locally and opened in a browser.
71+72+Usage from CLI
73+--------------------
74+75+You can dump an ASN.1 structure from the command line using the following command (no need to even install it):
76+77+```sh
78+npx @lapo/asn1js ed25519.cer
79+```
80+81ISC license
82-----------
8384+ASN.1 JavaScript decoder Copyright (c) 2008-2025 Lapo Luchini <lapo@lapo.it>
8586Permission to use, copy, modify, and/or distribute this software for any purpose with or without fee is hereby granted, provided that the above copyright notice and this permission notice appear in all copies.
87···95- extended tag support added by [Pรฉter Budai](https://www.peterbudai.eu/)
96- patches by [Gergely Nagy](https://github.com/ngg)
97- Relative OID support added by [Mistial Developer](https://github.com/mistial-dev)
98+- dark mode and other UI improvements by [Oliver Burgmaier](https://github.com/olibu/)
99- patches by [Nicolai Sรธborg](https://github.com/NicolaiSoeborg)
100101links
+89-39
asn1.js
···1// ASN.1 JavaScript decoder
2-// Copyright (c) 2008-2024 Lapo Luchini <lapo@lapo.it>
34// Permission to use, copy, modify, and/or distribute this software for any
5// purpose with or without fee is hereby granted, provided that the above
6// copyright notice and this permission notice appear in all copies.
7-//
8// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
···21 reTimeS = /^(\d\d)(0[1-9]|1[0-2])(0[1-9]|[12]\d|3[01])([01]\d|2[0-3])(?:([0-5]\d)(?:([0-5]\d)(?:[.,](\d{1,3}))?)?)?(Z|(-(?:0\d|1[0-2])|[+](?:0\d|1[0-4]))([0-5]\d)?)?$/,
22 reTimeL = /^(\d\d\d\d)(0[1-9]|1[0-2])(0[1-9]|[12]\d|3[01])([01]\d|2[0-3])(?:([0-5]\d)(?:([0-5]\d)(?:[.,](\d{1,3}))?)?)?(Z|(-(?:0\d|1[0-2])|[+](?:0\d|1[0-4]))([0-5]\d)?)?$/,
23 hexDigits = '0123456789ABCDEF',
24- b64Safe = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_',
025 tableT61 = [
26 ['', ''],
27 ['AEIOUaeiou', 'รรรรรร รจรฌรฒรน'], // Grave
···38 ['', ''],
39 ['OUou', 'ลลฐลลฑ'], // Double Acute
40 ['AEIUaeiu', 'ฤฤฤฎลฒฤ ฤฤฏลณ'], // Ogonek
41- ['CDELNRSTZcdelnrstz', 'ฤฤฤฤฝลลล ลคลฝฤฤฤฤพลลลกลฅลพ'] // Caron
42 ];
4344function stringCut(str, len) {
···56 }
57}
5859-class Stream {
0060000061 constructor(enc, pos) {
62 if (enc instanceof Stream) {
63 this.enc = enc.enc;
64 this.pos = enc.pos;
65 } else {
66- // enc should be an array or a binary string
67 this.enc = enc;
68 this.pos = pos;
69 }
0000000070 }
0071 get(pos) {
72 if (pos === undefined)
73 pos = this.pos++;
74 if (pos >= this.enc.length)
75- throw 'Requesting byte offset ' + pos + ' on a stream of length ' + this.enc.length;
76- return (typeof this.enc == 'string') ? this.enc.charCodeAt(pos) : this.enc[pos];
77 }
78- hexByte(b) {
0079 return hexDigits.charAt((b >> 4) & 0xF) + hexDigits.charAt(b & 0xF);
80 }
81- hexDump(start, end, raw) {
000082 let s = '';
83 for (let i = start; i < end; ++i) {
84- s += this.hexByte(this.get(i));
85- if (raw !== true)
0086 switch (i & 0xF) {
87 case 0x7: s += ' '; break;
88 case 0xF: s += '\n'; break;
···91 }
92 return s;
93 }
94- b64Dump(start, end) {
0000095 let extra = (end - start) % 3,
96 s = '',
97 i, c;
98 for (i = start; i + 2 < end; i += 3) {
99 c = this.get(i) << 16 | this.get(i + 1) << 8 | this.get(i + 2);
100- s += b64Safe.charAt(c >> 18 & 0x3F);
101- s += b64Safe.charAt(c >> 12 & 0x3F);
102- s += b64Safe.charAt(c >> 6 & 0x3F);
103- s += b64Safe.charAt(c & 0x3F);
104 }
105 if (extra > 0) {
106 c = this.get(i) << 16;
107 if (extra > 1) c |= this.get(i + 1) << 8;
108- s += b64Safe.charAt(c >> 18 & 0x3F);
109- s += b64Safe.charAt(c >> 12 & 0x3F);
110- if (extra == 2) s += b64Safe.charAt(c >> 6 & 0x3F);
0111 }
112 return s;
113 }
···190 let s = this.parseStringISO(start, end).str,
191 m = (shortYear ? reTimeS : reTimeL).exec(s);
192 if (!m)
193- return 'Unrecognized time: ' + s;
194 if (shortYear) {
195 // to avoid querying the timer, use the fixed range [1970, 2069]
196 // it will conform with ITU X.400 [-10, +40] sliding window until 2030
···245 parseBitString(start, end, maxLength) {
246 let unusedBits = this.get(start);
247 if (unusedBits > 7)
248- throw 'Invalid BitString with unusedBits=' + unusedBits;
249 let lenBit = ((end - start - 1) << 3) - unusedBits,
250 s = '';
251 for (let i = start + 1; i < end; ++i) {
···273 end = start + maxLength;
274 s = '';
275 for (let i = start; i < end; ++i)
276- s += this.hexByte(this.get(i));
277 if (len > maxLength)
278 s += ellipsis;
279 return { size: len, str: s };
···368369export class ASN1 {
370 constructor(stream, header, length, tag, tagLen, sub) {
371- if (!(tag instanceof ASN1Tag)) throw 'Invalid tag value.';
372 this.stream = stream;
373 this.header = header;
374 this.length = length;
···485 }
486 toPrettyString(indent) {
487 if (indent === undefined) indent = '';
488- let s = indent + this.typeName() + ' @' + this.stream.pos;
000000000489 if (this.length >= 0)
490 s += '+';
491 s += this.length;
···517 posLen() {
518 return this.stream.pos + this.tagLen;
519 }
520- toHexString() {
521- return this.stream.hexDump(this.posStart(), this.posEnd(), true);
00522 }
523- toB64String() {
524- return this.stream.b64Dump(this.posStart(), this.posEnd());
000525 }
526 static decodeLength(stream) {
527 let buf = stream.get(),
···531 if (len === 0) // long form with length 0 is a special case
532 return null; // undefined length
533 if (len > 6) // no reason to use Int10, as it would be a huge buffer anyways
534- throw 'Length over 48 bits not supported at position ' + (stream.pos - 1);
535 buf = 0;
536 for (let i = 0; i < len; ++i)
537 buf = (buf * 256) + stream.get();
···539 }
540 static decode(stream, offset, type = ASN1) {
541 if (!(type == ASN1 || type.prototype instanceof ASN1))
542- throw 'Must pass a class that extends ASN1';
543 if (!(stream instanceof Stream))
544 stream = new Stream(stream, offset || 0);
545 let streamStart = new Stream(stream),
···555 // definite length
556 let end = start + len;
557 if (end > stream.enc.length)
558- throw 'Container at offset ' + start + ' has a length of ' + len + ', which is past the end of the stream';
559 while (stream.pos < end)
560 sub[sub.length] = type.decode(stream);
561 if (stream.pos != end)
562- throw 'Content size is not correct for container at offset ' + start;
563 } else {
564 // undefined length
565 try {
···571 }
572 len = start - stream.pos; // undefined lengths are represented as negative values
573 } catch (e) {
574- throw 'Exception while decoding undefined length content at offset ' + start + ': ' + e;
575 }
576 }
577 };
···583 try {
584 if (tag.tagNumber == 0x03)
585 if (stream.get() != 0)
586- throw 'BIT STRINGs with unused bits cannot encapsulate.';
587 getSub();
588- for (let i = 0; i < sub.length; ++i)
589- if (sub[i].tag.isEOC())
590- throw 'EOC is not supposed to be actual content.';
000000591 } catch (e) {
592 // but silently ignore when they don't
593 sub = null;
···596 }
597 if (sub === null) {
598 if (len === null)
599- throw "We can't skip over an invalid tag with undefined length at offset " + start;
600 stream.pos = start + Math.abs(len);
601 }
602 return new type(streamStart, header, len, tag, tagLen, sub);
···1// ASN.1 JavaScript decoder
2+// Copyright (c) 2008 Lapo Luchini <lapo@lapo.it>
34// Permission to use, copy, modify, and/or distribute this software for any
5// purpose with or without fee is hereby granted, provided that the above
6// copyright notice and this permission notice appear in all copies.
7+//
8// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
···21 reTimeS = /^(\d\d)(0[1-9]|1[0-2])(0[1-9]|[12]\d|3[01])([01]\d|2[0-3])(?:([0-5]\d)(?:([0-5]\d)(?:[.,](\d{1,3}))?)?)?(Z|(-(?:0\d|1[0-2])|[+](?:0\d|1[0-4]))([0-5]\d)?)?$/,
22 reTimeL = /^(\d\d\d\d)(0[1-9]|1[0-2])(0[1-9]|[12]\d|3[01])([01]\d|2[0-3])(?:([0-5]\d)(?:([0-5]\d)(?:[.,](\d{1,3}))?)?)?(Z|(-(?:0\d|1[0-2])|[+](?:0\d|1[0-4]))([0-5]\d)?)?$/,
23 hexDigits = '0123456789ABCDEF',
24+ b64Std = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/',
25+ b64URL = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_',
26 tableT61 = [
27 ['', ''],
28 ['AEIOUaeiou', 'รรรรรร รจรฌรฒรน'], // Grave
···39 ['', ''],
40 ['OUou', 'ลลฐลลฑ'], // Double Acute
41 ['AEIUaeiu', 'ฤฤฤฎลฒฤ ฤฤฏลณ'], // Ogonek
42+ ['CDELNRSTZcdelnrstz', 'ฤฤฤฤฝลลล ลคลฝฤฤฤฤพลลลกลฅลพ'], // Caron
43 ];
4445function stringCut(str, len) {
···57 }
58}
5960+/** Class to manage a stream of bytes, with a zero-copy approach.
61+ * It uses an existing array or binary string and advances a position index. */
62+export class Stream {
6364+ /**
65+ * @param {Stream|array|string} enc data (will not be copied)
66+ * @param {?number} pos starting position (mandatory when `end` is not a Stream)
67+ */
68 constructor(enc, pos) {
69 if (enc instanceof Stream) {
70 this.enc = enc.enc;
71 this.pos = enc.pos;
72 } else {
073 this.enc = enc;
74 this.pos = pos;
75 }
76+ if (typeof this.pos != 'number')
77+ throw new Error('"pos" must be a numeric value');
78+ if (typeof this.enc == 'string')
79+ this.getRaw = pos => this.enc.charCodeAt(pos);
80+ else if (typeof this.enc[0] == 'number')
81+ this.getRaw = pos => this.enc[pos];
82+ else
83+ throw new Error('"enc" must be a numeric array or a string');
84 }
85+ /** Get the byte at current position (and increment it) or at a specified position (and avoid moving current position).
86+ * @param {?number} pos read position if specified, else current position (and increment it) */
87 get(pos) {
88 if (pos === undefined)
89 pos = this.pos++;
90 if (pos >= this.enc.length)
91+ throw new Error('Requesting byte offset ' + pos + ' on a stream of length ' + this.enc.length);
92+ return this.getRaw(pos);
93 }
94+ /** Convert a single byte to an hexadcimal string (of length 2).
95+ * @param {number} b */
96+ static hexByte(b) {
97 return hexDigits.charAt((b >> 4) & 0xF) + hexDigits.charAt(b & 0xF);
98 }
99+ /** Hexadecimal dump of a specified region of the stream.
100+ * @param {number} start starting position (included)
101+ * @param {number} end ending position (excluded)
102+ * @param {string} type 'raw', 'byte' or 'dump' (default) */
103+ hexDump(start, end, type = 'dump') {
104 let s = '';
105 for (let i = start; i < end; ++i) {
106+ if (type == 'byte' && i > start)
107+ s += ' ';
108+ s += Stream.hexByte(this.get(i));
109+ if (type == 'dump')
110 switch (i & 0xF) {
111 case 0x7: s += ' '; break;
112 case 0xF: s += '\n'; break;
···115 }
116 return s;
117 }
118+ /** Base64url dump of a specified region of the stream (according to RFC 4648 section 5).
119+ * @param {number} start starting position (included)
120+ * @param {number} end ending position (excluded)
121+ * @param {string} type 'url' (default, section 5 without padding) or 'std' (section 4 with padding) */
122+ b64Dump(start, end, type = 'url') {
123+ const b64 = type === 'url' ? b64URL : b64Std;
124 let extra = (end - start) % 3,
125 s = '',
126 i, c;
127 for (i = start; i + 2 < end; i += 3) {
128 c = this.get(i) << 16 | this.get(i + 1) << 8 | this.get(i + 2);
129+ s += b64.charAt(c >> 18 & 0x3F);
130+ s += b64.charAt(c >> 12 & 0x3F);
131+ s += b64.charAt(c >> 6 & 0x3F);
132+ s += b64.charAt(c & 0x3F);
133 }
134 if (extra > 0) {
135 c = this.get(i) << 16;
136 if (extra > 1) c |= this.get(i + 1) << 8;
137+ s += b64.charAt(c >> 18 & 0x3F);
138+ s += b64.charAt(c >> 12 & 0x3F);
139+ if (extra == 2) s += b64.charAt(c >> 6 & 0x3F);
140+ if (b64 === b64Std) s += '==='.slice(0, 3 - extra);
141 }
142 return s;
143 }
···220 let s = this.parseStringISO(start, end).str,
221 m = (shortYear ? reTimeS : reTimeL).exec(s);
222 if (!m)
223+ throw new Error('Unrecognized time: ' + s);
224 if (shortYear) {
225 // to avoid querying the timer, use the fixed range [1970, 2069]
226 // it will conform with ITU X.400 [-10, +40] sliding window until 2030
···275 parseBitString(start, end, maxLength) {
276 let unusedBits = this.get(start);
277 if (unusedBits > 7)
278+ throw new Error('Invalid BitString with unusedBits=' + unusedBits);
279 let lenBit = ((end - start - 1) << 3) - unusedBits,
280 s = '';
281 for (let i = start + 1; i < end; ++i) {
···303 end = start + maxLength;
304 s = '';
305 for (let i = start; i < end; ++i)
306+ s += Stream.hexByte(this.get(i));
307 if (len > maxLength)
308 s += ellipsis;
309 return { size: len, str: s };
···398399export class ASN1 {
400 constructor(stream, header, length, tag, tagLen, sub) {
401+ if (!(tag instanceof ASN1Tag)) throw new Error('Invalid tag value.');
402 this.stream = stream;
403 this.header = header;
404 this.length = length;
···515 }
516 toPrettyString(indent) {
517 if (indent === undefined) indent = '';
518+ let s = indent;
519+ if (this.def) {
520+ if (this.def.id)
521+ s += this.def.id + ' ';
522+ if (this.def.name && this.def.name != this.typeName().replace(/_/g, ' '))
523+ s+= this.def.name + ' ';
524+ if (this.def.mismatch)
525+ s += '[?] ';
526+ }
527+ s += this.typeName() + ' @' + this.stream.pos;
528 if (this.length >= 0)
529 s += '+';
530 s += this.length;
···556 posLen() {
557 return this.stream.pos + this.tagLen;
558 }
559+ /** Hexadecimal dump of the node.
560+ * @param type 'raw', 'byte' or 'dump' */
561+ toHexString(type = 'raw') {
562+ return this.stream.hexDump(this.posStart(), this.posEnd(), type);
563 }
564+ /** Base64url dump of the node (according to RFC 4648 section 5).
565+ * @param {string} type 'url' (default, section 5 without padding) or 'std' (section 4 with padding)
566+ */
567+ toB64String(type = 'url') {
568+ return this.stream.b64Dump(this.posStart(), this.posEnd(), type);
569 }
570 static decodeLength(stream) {
571 let buf = stream.get(),
···575 if (len === 0) // long form with length 0 is a special case
576 return null; // undefined length
577 if (len > 6) // no reason to use Int10, as it would be a huge buffer anyways
578+ throw new Error('Length over 48 bits not supported at position ' + (stream.pos - 1));
579 buf = 0;
580 for (let i = 0; i < len; ++i)
581 buf = (buf * 256) + stream.get();
···583 }
584 static decode(stream, offset, type = ASN1) {
585 if (!(type == ASN1 || type.prototype instanceof ASN1))
586+ throw new Error('Must pass a class that extends ASN1');
587 if (!(stream instanceof Stream))
588 stream = new Stream(stream, offset || 0);
589 let streamStart = new Stream(stream),
···599 // definite length
600 let end = start + len;
601 if (end > stream.enc.length)
602+ throw new Error('Container at offset ' + start + ' has a length of ' + len + ', which is past the end of the stream');
603 while (stream.pos < end)
604 sub[sub.length] = type.decode(stream);
605 if (stream.pos != end)
606+ throw new Error('Content size is not correct for container at offset ' + start);
607 } else {
608 // undefined length
609 try {
···615 }
616 len = start - stream.pos; // undefined lengths are represented as negative values
617 } catch (e) {
618+ throw new Error('Exception while decoding undefined length content at offset ' + start + ': ' + e);
619 }
620 }
621 };
···627 try {
628 if (tag.tagNumber == 0x03)
629 if (stream.get() != 0)
630+ throw new Error('BIT STRINGs with unused bits cannot encapsulate.');
631 getSub();
632+ for (let s of sub) {
633+ if (s.tag.isEOC())
634+ throw new Error('EOC is not supposed to be actual content.');
635+ try {
636+ s.content();
637+ } catch (e) {
638+ throw new Error('Unable to parse content: ' + e);
639+ }
640+ }
641 } catch (e) {
642 // but silently ignore when they don't
643 sub = null;
···646 }
647 if (sub === null) {
648 if (len === null)
649+ throw new Error("We can't skip over an invalid tag with undefined length at offset " + start);
650 stream.pos = start + Math.abs(len);
651 }
652 return new type(streamStart, header, len, tag, tagLen, sub);
+8-7
base64.js
···1// Base64 JavaScript decoder
2-// Copyright (c) 2008-2024 Lapo Luchini <lapo@lapo.it>
34// Permission to use, copy, modify, and/or distribute this software for any
5// purpose with or without fee is hereby granted, provided that the above
6// copyright notice and this permission notice appear in all copies.
7-//
8// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
···31 decoder[b64.charCodeAt(i)] = i;
32 for (i = 0; i < ignore.length; ++i)
33 decoder[ignore.charCodeAt(i)] = -1;
34- // RFC 3548 URL & file safe encoding
35 decoder['-'.charCodeAt(0)] = decoder['+'.charCodeAt(0)];
36 decoder['_'.charCodeAt(0)] = decoder['/'.charCodeAt(0)];
37 }
···7576 static pretty(str) {
77 // fix padding
78- if (str.length % 4 > 0)
79- str = (str + '===').slice(0, str.length + str.length % 4);
80- // convert RFC 3548 to standard Base64
081 str = str.replace(/-/g, '+').replace(/_/g, '/');
82 // 80 column width
83- return str.replace(/(.{80})/g, '$1\n');
84 }
8586 static unarmor(a) {
···1// Base64 JavaScript decoder
2+// Copyright (c) 2008 Lapo Luchini <lapo@lapo.it>
34// Permission to use, copy, modify, and/or distribute this software for any
5// purpose with or without fee is hereby granted, provided that the above
6// copyright notice and this permission notice appear in all copies.
7+//
8// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
···31 decoder[b64.charCodeAt(i)] = i;
32 for (i = 0; i < ignore.length; ++i)
33 decoder[ignore.charCodeAt(i)] = -1;
34+ // also support decoding Base64url (RFC 4648 section 5)
35 decoder['-'.charCodeAt(0)] = decoder['+'.charCodeAt(0)];
36 decoder['_'.charCodeAt(0)] = decoder['/'.charCodeAt(0)];
37 }
···7576 static pretty(str) {
77 // fix padding
78+ let pad = 4 - str.length % 4;
79+ if (pad < 4)
80+ str += '==='.slice(0, pad);
81+ // convert Base64url (RFC 4648 section 5) to standard Base64 (RFC 4648 section 4)
82 str = str.replace(/-/g, '+').replace(/_/g, '/');
83 // 80 column width
84+ return str.replace(/.{80}/g, '$&\n');
85 }
8687 static unarmor(a) {
···1+This is a PKCS#7/CMS encrypted with passwod.
2+$ echo content | openssl cms -encrypt -pwri_password test -aes256 -outform pem -out examples/cms-password.p7m
3+-----BEGIN CMS-----
4+MIHYBgkqhkiG9w0BBwOggcowgccCAQMxgYOjgYACAQCgGwYJKoZIhvcNAQUMMA4E
5+CED/DSxXMtH6AgIIADAsBgsqhkiG9w0BCRADCTAdBglghkgBZQMEASoEEDIQbJMC
6+Sfb3LpwHduj/meQEMKwrwq5M4V0stztm6OUTAsFY2zKDY20SApwSEeEcAh9TM42E
7+1palnHeqHTBpC8pIpjA8BgkqhkiG9w0BBwEwHQYJYIZIAWUDBAEqBBByt+scPrdM
8+giR7WUOJyB3hgBDcD3UDMtZSep8X/3yy1/Yq
9+-----END CMS-----
+12
examples/crl-rfc5280.b64
···000000000000
···1+CRL example from RFC5280 as found here:
2+https://csrc.nist.gov/projects/pki-testing/sample-certificates-and-crls
3+4+begin-base64 644 crl-rfc5280.der
5+MIIBYDCBygIBATANBgkqhkiG9w0BAQUFADBDMRMwEQYKCZImiZPyLGQBGRYDY29tMRcwFQYKCZIm
6+iZPyLGQBGRYHZXhhbXBsZTETMBEGA1UEAxMKRXhhbXBsZSBDQRcNMDUwMjA1MTIwMDAwWhcNMDUw
7+MjA2MTIwMDAwWjAiMCACARIXDTA0MTExOTE1NTcwM1owDDAKBgNVHRUEAwoBAaAvMC0wHwYDVR0j
8+BBgwFoAUCGivhTPIOUp6+IKTjnBqSiCELDIwCgYDVR0UBAMCAQwwDQYJKoZIhvcNAQEFBQADgYEA
9+ItwYffcIzsx10NBqm60Q9HYjtIFutW2+DvsVFGzIF20f7pAXom9g5L2qjFXejoRvkvifEBInr0rU
10+L4XiNkR9qqNMJTgV/wD9Pn7uPSYS69jnK2LiK8NGgO94gtEVxtCccmrLznrtZ5mLbnCBfUNCdMGm
11+r8FVF6IzTNYGmCuk/C4=
12+====
+8
examples/ldapmessage.b64
···00000000
···1+LDAPMessage example as found on ldap.com.
2+3+Original link:
4+https://ldap.com/ldapv3-wire-protocol-reference-ldap-message/
5+6+begin-base64 644 ldapmessage.der
7+MDUCAQVKEWRjPWV4YW1wbGUsZGM9Y29toB0wGwQWMS4yLjg0MC4xMTM1NTYuMS40LjgwNQEB/w==
8+====
···1// Hex JavaScript decoder
2-// Copyright (c) 2008-2024 Lapo Luchini <lapo@lapo.it>
34// Permission to use, copy, modify, and/or distribute this software for any
5// purpose with or without fee is hereby granted, provided that the above
6// copyright notice and this permission notice appear in all copies.
7-//
8// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
···1// Hex JavaScript decoder
2+// Copyright (c) 2008 Lapo Luchini <lapo@lapo.it>
34// Permission to use, copy, modify, and/or distribute this software for any
5// purpose with or without fee is hereby granted, provided that the above
6// copyright notice and this permission notice appear in all copies.
7+//
8// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
···01import { ASN1DOM } from './dom.js';
2import { Base64 } from './base64.js';
3import { Hex } from './hex.js';
···15 area = id('area'),
16 file = id('file'),
17 examples = id('examples'),
18- selectTheme = id('theme-select'),
19 selectDefs = id('definitions'),
20 selectTag = id('tags');
21···41function show(asn1) {
42 tree.innerHTML = '';
43 dump.innerHTML = '';
44- tree.appendChild(asn1.toDOM());
00045 if (wantHex.checked) dump.appendChild(asn1.toHexDOM(undefined, trimHex.checked));
46}
47-function decode(der, offset) {
48 offset = offset || 0;
49 try {
50 const asn1 = ASN1DOM.decode(der, offset);
···103 text(tree, e);
104 }
105}
106-function decodeText(val) {
107 try {
108 let der = reHex.test(val) ? Hex.decode(val) : Base64.unarmor(val);
109 decode(der);
···112 dump.innerHTML = '';
113 }
114}
115-function decodeBinaryString(str) {
116 let der;
117 try {
118 if (reHex.test(str)) der = Hex.decode(str);
···125 }
126}
127// set up buttons
128-id('butDecode').onclick = function () {
129- decodeText(area.value);
0000000000000000000000000130};
131-id('butClear').onclick = function () {
132- area.value = '';
133- file.value = '';
134- tree.innerHTML = '';
135- dump.innerHTML = '';
136- selectDefs.innerHTML = '';
137- hash = window.location.hash = '';
138-};
139-id('butExample').onclick = function () {
140- console.log('Loading example:', examples.value);
141- let request = new XMLHttpRequest();
142- request.open('GET', 'examples/' + examples.value, true);
143- request.onreadystatechange = function () {
144- if (this.readyState !== 4) return;
145- if (this.status >= 200 && this.status < 400) {
146- area.value = this.responseText;
147- decodeText(this.responseText);
148- } else {
149- console.log('Error loading example.');
150- }
151- };
152- request.send();
153-};
154-// set dark theme depending on OS settings
155-function setTheme() {
156- let storedTheme = localStorage.getItem('theme');
157- let theme = 'os';
158- if (storedTheme)
159- theme = storedTheme;
160- selectTheme.value = theme;
161- if (theme == 'os') {
162- let prefersDarkScheme = window.matchMedia('(prefers-color-scheme: dark)');
163- theme = prefersDarkScheme.matches ? 'dark': 'light';
164- }
165- if (theme == 'dark') {
166- const css1 = id('theme-base');
167- const css2 = css1.cloneNode();
168- css2.id = 'theme-override';
169- css2.href = 'index-' + theme + '.css';
170- css1.parentElement.appendChild(css2);
171- } else {
172- const css2 = id('theme-override');
173- if (css2) css2.remove();
174- }
175}
176-setTheme();
177-selectTheme.addEventListener('change', function () {
178- localStorage.setItem('theme', selectTheme.value);
179- setTheme();
180-});
181// this is only used if window.FileReader
182function read(f) {
183 area.value = ''; // clear text area, will get b64 content
···1+import './theme.js';
2import { ASN1DOM } from './dom.js';
3import { Base64 } from './base64.js';
4import { Hex } from './hex.js';
···16 area = id('area'),
17 file = id('file'),
18 examples = id('examples'),
019 selectDefs = id('definitions'),
20 selectTag = id('tags');
21···41function show(asn1) {
42 tree.innerHTML = '';
43 dump.innerHTML = '';
44+ let ul = document.createElement('ul');
45+ ul.className = 'treecollapse';
46+ tree.appendChild(ul);
47+ ul.appendChild(asn1.toDOM());
48 if (wantHex.checked) dump.appendChild(asn1.toHexDOM(undefined, trimHex.checked));
49}
50+export function decode(der, offset) {
51 offset = offset || 0;
52 try {
53 const asn1 = ASN1DOM.decode(der, offset);
···106 text(tree, e);
107 }
108}
109+export function decodeText(val) {
110 try {
111 let der = reHex.test(val) ? Hex.decode(val) : Base64.unarmor(val);
112 decode(der);
···115 dump.innerHTML = '';
116 }
117}
118+export function decodeBinaryString(str) {
119 let der;
120 try {
121 if (reHex.test(str)) der = Hex.decode(str);
···128 }
129}
130// set up buttons
131+const butClickHandlers = {
132+ butDecode: () => {
133+ decodeText(area.value);
134+ },
135+ butClear: () => {
136+ area.value = '';
137+ file.value = '';
138+ tree.innerHTML = '';
139+ dump.innerHTML = '';
140+ selectDefs.innerHTML = '';
141+ hash = window.location.hash = '';
142+ },
143+ butExample: () => {
144+ console.log('Loading example:', examples.value);
145+ let request = new XMLHttpRequest();
146+ request.open('GET', 'examples/' + examples.value, true);
147+ request.onreadystatechange = function () {
148+ if (this.readyState !== 4) return;
149+ if (this.status >= 200 && this.status < 400) {
150+ area.value = this.responseText;
151+ decodeText(this.responseText);
152+ } else {
153+ console.log('Error loading example.');
154+ }
155+ };
156+ request.send();
157+ },
158};
159+for (const [name, onClick] of Object.entries(butClickHandlers)) {
160+ let elem = id(name);
161+ if (elem)
162+ elem.onclick = onClick;
0000000000000000000000000000000000000000163}
00000164// this is only used if window.FileReader
165function read(f) {
166 area.value = ''; // clear text area, will get b64 content
+15-9
int10.js
···1// Big integer base-10 printing library
2-// Copyright (c) 2008-2024 Lapo Luchini <lapo@lapo.it>
34// Permission to use, copy, modify, and/or distribute this software for any
5// purpose with or without fee is hereby granted, provided that the above
6// copyright notice and this permission notice appear in all copies.
7-//
8// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
···13// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
1516-let max = 10000000000000; // biggest 10^n integer that can still fit 2^53 when multiplied by 256
01718export class Int10 {
19 /**
···2627 /**
28 * Multiply value by m and add c.
29- * @param {number} m - multiplier, must be < =256
30- * @param {number} c - value to add
31 */
32 mulAdd(m, c) {
033 // assert(m <= 256)
034 let b = this.buf,
35 l = b.length,
36 i, t;
···7172 /**
73 * Convert to decimal string representation.
74- * @param {*} base - optional value, only value accepted is 10
075 */
76- toString(base) {
77- if ((base || 10) != 10)
78- throw 'only base 10 is supported';
79 let b = this.buf,
80 s = b[b.length - 1].toString();
81 for (let i = b.length - 2; i >= 0; --i)
···86 /**
87 * Convert to Number value representation.
88 * Will probably overflow 2^53 and thus become approximate.
089 */
90 valueOf() {
91 let b = this.buf,
···9798 /**
99 * Return value as a simple Number (if it is <= 10000000000000), or return this.
0100 */
101 simplify() {
102 let b = this.buf;
···1// Big integer base-10 printing library
2+// Copyright (c) 2008 Lapo Luchini <lapo@lapo.it>
34// Permission to use, copy, modify, and/or distribute this software for any
5// purpose with or without fee is hereby granted, provided that the above
6// copyright notice and this permission notice appear in all copies.
7+//
8// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
···13// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
1516+/** Biggest 10^n integer that can still fit 2^53 when multiplied by 256. */
17+const max = 10000000000000;
1819export class Int10 {
20 /**
···2728 /**
29 * Multiply value by m and add c.
30+ * @param {number} m - multiplier, must be 0<m<=256
31+ * @param {number} c - value to add, must be c>=0
32 */
33 mulAdd(m, c) {
34+ // assert(m > 0)
35 // assert(m <= 256)
36+ // assert(c >= 0)
37 let b = this.buf,
38 l = b.length,
39 i, t;
···7475 /**
76 * Convert to decimal string representation.
77+ * @param {number} [base=10] - optional value, only value accepted is 10
78+ * @returns {string} The decimal string representation.
79 */
80+ toString(base = 10) {
81+ if (base != 10)
82+ throw new Error('only base 10 is supported');
83 let b = this.buf,
84 s = b[b.length - 1].toString();
85 for (let i = b.length - 2; i >= 0; --i)
···90 /**
91 * Convert to Number value representation.
92 * Will probably overflow 2^53 and thus become approximate.
93+ * @returns {number} The numeric value.
94 */
95 valueOf() {
96 let b = this.buf,
···102103 /**
104 * Return value as a simple Number (if it is <= 10000000000000), or return this.
105+ * @returns {number | Int10} The simplified value.
106 */
107 simplify() {
108 let b = this.buf;
-1
oids.js
···2722"1.3.6.1.4.1.40869.1.1.22.3": { "d": "TWCA EV policy", "c": "TWCA Root Certification Authority" },
2723"2.16.840.1.113733.1.7.23.6": { "d": "VeriSign EV policy", "c": "VeriSign Class 3 Public Primary Certification Authority" },
2724"2.16.840.1.114171.500.9": { "d": "Wells Fargo EV policy", "c": "Wells Fargo WellsSecure Public Root Certificate Authority" },
2725-"END": ""
2726};
···2722"1.3.6.1.4.1.40869.1.1.22.3": { "d": "TWCA EV policy", "c": "TWCA Root Certification Authority" },
2723"2.16.840.1.113733.1.7.23.6": { "d": "VeriSign EV policy", "c": "VeriSign Class 3 Public Primary Certification Authority" },
2724"2.16.840.1.114171.500.9": { "d": "Wells Fargo EV policy", "c": "Wells Fargo WellsSecure Public Root Certificate Authority" },
02725};