My ASN.1 Notes - Revision history

Paul: added sections

2020-09-04T18:11:49Z

added sections

@@ Line 40: / Line 40: @@
 == My Notes ==
-Source: [https://www.etsi.org/standards ETSI TS 101 671 V3.15.1 (2018-06)]
+=== Source: [https://www.etsi.org/standards ETSI TS 101 671 V3.15.1 (2018-06)] ===
 <pre>
@@ Line 91: / Line 91: @@
+	}
 }</pre>
 [https://www.oss.com/asn1/resources/asn1-made-simple/types.html List of common ASN.1 Types] which includes UTCTime and GeneralizedTime in TimeStamp example above.
 <center>[[Computing|Back to Computing]]</center>

2020-08-25T22:45:16Z

My Notes

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 Source: [https://www.etsi.org/standards ETSI TS 101 671 V3.15.1 (2018-06)]
-<pre>TimeStamp ::= CHOICE
+<pre>
+{
 	localTime [0] LocalTimeStamp,

2020-08-21T20:48:09Z

Resources

← Older revision		Revision as of 15:48, 21 August 2020
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	== Resources ==		== Resources ==
	[http://www.oss.com/~~index.html~~ OSS Nokalva]		[http://www.oss.com/ OSS Nokalva] Note: I have used OSS Nokalva's ASN.1 Studio and really enjoyed it (UI could use a little love).

	[https://www.obj-sys.com/ Objective Sytems]		[https://www.obj-sys.com/ Objective Sytems]

2020-08-21T20:45:54Z

My Notes

← Older revision		Revision as of 15:45, 21 August 2020
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	== My Notes ==		== My Notes ==

			Source: [https://www.etsi.org/standards ETSI TS 101 671 V3.15.1 (2018-06)]

	[[Computing\|Back to Computing]]		<pre>TimeStamp ::= CHOICE
			{
			localTime [0] LocalTimeStamp,
			utcTime [1] UTCTime
			}

			LocalTimeStamp ::= SEQUENCE
			{
			generalizedTime [0] GeneralizedTime,
			winterSummerIndication [1] ENUMERATED
			{
			notProvided(0),
			winterTime(1),
			summerTime(2),
			...
			}
			}</pre>

			[https://www.oss.com/asn1/resources/asn1-made-simple/types.html List of common ASN.1 Types] which includes UTCTime and GeneralizedTime in TimeStamp example above.

			<center>[[Computing\|Back to Computing]]</center>

2019-03-29T20:27:16Z

Resources

← Older revision		Revision as of 15:27, 29 March 2019
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	ETSI [https://portal.etsi.org/PNNS/GenericAllocation/ASN1ObjectIdentifiers.aspx ASN.1 Object Identifiers Tree]		ETSI [https://portal.etsi.org/PNNS/GenericAllocation/ASN1ObjectIdentifiers.aspx ASN.1 Object Identifiers Tree]

			[https://cs.fit.edu/code/projects/cse2410spring2014_team4/repository/revisions/master/entry/asn1/gsm_map/MAP-CommonDataTypes.asn Mobile Application Part (MAP)] CommonDataTypes.asn

	=== Python ASN.1 Resources ===		=== Python ASN.1 Resources ===

2019-03-29T20:05:28Z

Resources

← Older revision		Revision as of 15:05, 29 March 2019
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	[http://powerasn.ncottin.net/ Power ASN]		[http://powerasn.ncottin.net/ Power ASN]

			ETSI [https://portal.etsi.org/PNNS/GenericAllocation/ASN1ObjectIdentifiers.aspx ASN.1 Object Identifiers Tree]

	=== Python ASN.1 Resources ===		=== Python ASN.1 Resources ===

2019-03-28T22:20:01Z

Python ASN.1 Resources

← Older revision		Revision as of 17:20, 28 March 2019
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	=== Python ASN.1 Resources ===		=== Python ASN.1 Resources ===

			[https://github.com/P1sec/pycrate Pycrate] is a french word for qualifying bad wine. The present software library has nothing to do with bad wine, it is simply a Python library for manipulating various digital formats in an easy way. It is the glorious successor of libmich, which was started 8 years ago and served well.

			It provides basically a runtime for encoding and decoding data structures, including CSN.1 and ASN.1. Additionally, it features a 3G and LTE mobile core network.

	[https://github.com/etingof/pyasn1 pyasn1] is a free and open source implementation of ASN.1 types and codecs as a Python package. It has been first written to support particular protocol (SNMP) but then generalized to be suitable for a wide range of protocols based on ASN.1 specification.		[https://github.com/etingof/pyasn1 pyasn1] is a free and open source implementation of ASN.1 types and codecs as a Python package. It has been first written to support particular protocol (SNMP) but then generalized to be suitable for a wide range of protocols based on ASN.1 specification.

2019-03-28T22:10:02Z

added asn.1 section

← Older revision		Revision as of 17:10, 28 March 2019
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	[http://powerasn.ncottin.net/ Power ASN]		[http://powerasn.ncottin.net/ Power ASN]

			=== Python ASN.1 Resources ===

			[https://github.com/etingof/pyasn1 pyasn1] is a free and open source implementation of ASN.1 types and codecs as a Python package. It has been first written to support particular protocol (SNMP) but then generalized to be suitable for a wide range of protocols based on ASN.1 specification.

			[https://github.com/kimgr/asn1ate asn1ate] is a Python library for translating ASN.1 into other forms. It is intended for code generation from formal ASN.1 definitions, and a code generator for pyasn1 is included.

			[https://python-asn1.readthedocs.io/en/latest/readme.html Python-ASN1] is a simple ASN.1 encoder and decoder for Python 2.6+ and 3.3+.

			[https://blog.getreu.net/projects/asn1-tiny-decoder/#_the_asn_1_decoder asn1tinydecoder.py] is a simple and fast ASN.1 decoder without external libraries designed to parse large files.

	== Nice examples ==		== Nice examples ==

2018-07-23T18:24:13Z

TBCD

← Older revision		Revision as of 13:24, 23 July 2018
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	[https://stackoverflow.com/questions/3296761/i-need-an-example-to-understand-implicit-tagging-in-asn-1/30608283#30608283 Example to understand IMPLICIT tagging]		[https://stackoverflow.com/questions/3296761/i-need-an-example-to-understand-implicit-tagging-in-asn-1/30608283#30608283 Example to understand IMPLICIT tagging]

			== TBCD ==

			[https://www.obj-sys.com/docs/asn2txt/v23x/HTML/ch03s03.html Telephony Binary-Coded Decimal] strings are not part of the ASN.1 standard, but their use is prevalent in many telephony-related ASN.1 specifications.

			Conversion of these types into standard numeric text strings is supported by Objective Systems software.

			In general, BCD strings pack two numeric digits into a single byte value by using a four-bit nibble to hold each digit. By convention, the digits are reversed in TBCD strings, but there are no official standards for this encoding.

	== My Notes ==		== My Notes ==

2018-05-16T21:55:07Z

Nice examples

← Older revision		Revision as of 16:55, 16 May 2018
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	== Nice examples ==		== Nice examples ==

			[https://stackoverflow.com/questions/24166556/untagged-choice-in-asn-1 Example explaining CHOICE tagging]

	[https://stackoverflow.com/questions/3296761/i-need-an-example-to-understand-implicit-tagging-in-asn-1/30608283#30608283 Example to understand IMPLICIT tagging]		[https://stackoverflow.com/questions/3296761/i-need-an-example-to-understand-implicit-tagging-in-asn-1/30608283#30608283 Example to understand IMPLICIT tagging]