ASN1 is a suite to parse ASN.1 syntax, build a parsing model from it and read/write ASN.1 encoded data structures.

For Pharo12, Pharo13 and Pharo-alpha install with:

Metacello new 
	repository: 'github://noha/ASN.1:master/src';
	baseline: 'ASN1';
	load: #all

Which version to use for which pharo version?

pharo version	branch
13	master
12	master
11	pharo10
10	pharo10
9	pharo9
8	pharo8
7	pharo7