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101 lines
2.4 KiB
101 lines
2.4 KiB
3 years ago
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# ASN1.js
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ASN.1 DER Encoder/Decoder and DSL.
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## Example
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Define model:
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```javascript
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var asn = require('asn1.js');
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var Human = asn.define('Human', function() {
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this.seq().obj(
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this.key('firstName').octstr(),
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this.key('lastName').octstr(),
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this.key('age').int(),
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this.key('gender').enum({ 0: 'male', 1: 'female' }),
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this.key('bio').seqof(Bio)
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);
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});
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var Bio = asn.define('Bio', function() {
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this.seq().obj(
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this.key('time').gentime(),
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this.key('description').octstr()
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);
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});
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```
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Encode data:
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```javascript
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var output = Human.encode({
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firstName: 'Thomas',
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lastName: 'Anderson',
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age: 28,
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gender: 'male',
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bio: [
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{
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time: +new Date('31 March 1999'),
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description: 'freedom of mind'
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}
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]
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}, 'der');
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```
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Decode data:
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```javascript
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var human = Human.decode(output, 'der');
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console.log(human);
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/*
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{ firstName: <Buffer 54 68 6f 6d 61 73>,
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lastName: <Buffer 41 6e 64 65 72 73 6f 6e>,
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age: 28,
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gender: 'male',
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bio:
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[ { time: 922820400000,
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description: <Buffer 66 72 65 65 64 6f 6d 20 6f 66 20 6d 69 6e 64> } ] }
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*/
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```
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### Partial decode
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Its possible to parse data without stopping on first error. In order to do it,
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you should call:
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```javascript
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var human = Human.decode(output, 'der', { partial: true });
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console.log(human);
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/*
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{ result: { ... },
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errors: [ ... ] }
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*/
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```
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#### LICENSE
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This software is licensed under the MIT License.
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Copyright Fedor Indutny, 2017.
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Permission is hereby granted, free of charge, to any person obtaining a
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copy of this software and associated documentation files (the
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"Software"), to deal in the Software without restriction, including
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without limitation the rights to use, copy, modify, merge, publish,
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distribute, sublicense, and/or sell copies of the Software, and to permit
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persons to whom the Software is furnished to do so, subject to the
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following conditions:
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The above copyright notice and this permission notice shall be included
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in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
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NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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USE OR OTHER DEALINGS IN THE SOFTWARE.
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