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| node-asn1 is a library for encoding and decoding ASN.1 datatypes in pure JS. | ||||
| Currently BER encoding is supported; at some point I'll likely have to do DER. | ||||
| 
 | ||||
| ## Usage | ||||
| 
 | ||||
| Mostly, if you're *actually* needing to read and write ASN.1, you probably don't | ||||
| need this readme to explain what and why.  If you have no idea what ASN.1 is, | ||||
| see this: ftp://ftp.rsa.com/pub/pkcs/ascii/layman.asc | ||||
| 
 | ||||
| The source is pretty much self-explanatory, and has read/write methods for the | ||||
| common types out there. | ||||
| 
 | ||||
| ### Decoding | ||||
| 
 | ||||
| The following reads an ASN.1 sequence with a boolean. | ||||
| 
 | ||||
|     var Ber = require('asn1').Ber; | ||||
| 
 | ||||
|     var reader = new Ber.Reader(Buffer.from([0x30, 0x03, 0x01, 0x01, 0xff])); | ||||
| 
 | ||||
|     reader.readSequence(); | ||||
|     console.log('Sequence len: ' + reader.length); | ||||
|     if (reader.peek() === Ber.Boolean) | ||||
|       console.log(reader.readBoolean()); | ||||
| 
 | ||||
| ### Encoding | ||||
| 
 | ||||
| The following generates the same payload as above. | ||||
| 
 | ||||
|     var Ber = require('asn1').Ber; | ||||
| 
 | ||||
|     var writer = new Ber.Writer(); | ||||
| 
 | ||||
|     writer.startSequence(); | ||||
|     writer.writeBoolean(true); | ||||
|     writer.endSequence(); | ||||
| 
 | ||||
|     console.log(writer.buffer); | ||||
| 
 | ||||
| ## Installation | ||||
| 
 | ||||
|     npm install asn1 | ||||
| 
 | ||||
| ## License | ||||
| 
 | ||||
| MIT. | ||||
| 
 | ||||
| ## Bugs | ||||
| 
 | ||||
| See <https://github.com/joyent/node-asn1/issues>. | ||||
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