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Paul: /* My regex notes for checking an ASN.1 GeneralizedTime type */

2023-11-06T07:04:45Z

My regex notes for checking an ASN.1 GeneralizedTime type

← Older revision		Revision as of 02:04, 6 November 2023
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	Take examples, like 20190822005901.9Z, 20190801230059.09Z, 20190822005901.991Z, and play around in [https://regex101.com/ Regex101] online tool		Take examples, like 20190822005901.9Z, 20190801230059.09Z, 20190822005901.991Z, and play around in [https://regex101.com/ Regex101] online tool

			=== ISO 8601 Date and Time format ===

			Date and time with UTC

			<code>^2(\d\d\d)([0][1-9]\|[1][0-2])([0][1-9]\|[1-2][\d]\|[3][0-1])T(([0-1][\d]\|[2][0-3])([0-5][\d])([0-5][\d])\|240000)Z?$</code>

			This matches:
			* 20231106T240000Z

	== Miscellaneous Stuff ==		== Miscellaneous Stuff ==

Paul: /* IPv4 with slash and network mask */

2020-09-30T21:23:09Z

IPv4 with slash and network mask

← Older revision		Revision as of 16:23, 30 September 2020
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	256.255.255.255 < - no match</pre>		256.255.255.255 < - no match</pre>

	==== IPv4 with slash ~~and~~ network mask ====		==== IPv4 with slash & network mask ====
	<pre>		<pre>
	^(([1-9]\|[1-9]\d\|1\d\d\|2[0-4]\d\|25[0-5])\.)((\d\|[1-9]\d\|1\d\d\|2[0-4]\d\|25[0-5])\.){2}(\d{1,2}\|1\d\d\|2[0-4]\d\|25[0-5])\/([1-9]\|[1-2]\d\|3[0-2])$</pre>		^(([1-9]\|[1-9]\d\|1\d\d\|2[0-4]\d\|25[0-5])\.)((\d\|[1-9]\d\|1\d\d\|2[0-4]\d\|25[0-5])\.){2}(\d{1,2}\|1\d\d\|2[0-4]\d\|25[0-5])\/([1-9]\|[1-2]\d\|3[0-2])$</pre>

Paul: /* IPv6 with slash & subnet mask */

2020-09-30T21:22:50Z

IPv6 with slash & subnet mask

← Older revision		Revision as of 16:22, 30 September 2020
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	0fff:ffff:ffff:ffff:FFFF:FFFF:FFFF:FFFF (invalid due to leading 0 in first hextet group)</pre>		0fff:ffff:ffff:ffff:FFFF:FFFF:FFFF:FFFF (invalid due to leading 0 in first hextet group)</pre>

	==== IPv6 with slash & ~~subnet~~ mask ====		==== IPv6 with slash & network mask ====

	<pre>(^(([0-9a-fA-F]{4}:){7}[0-9a-fA-F]{4})\|(^([0-9a-fA-F]{1,4}:){7}[0-9a-fA-F]{1,4}))\/([1-9]\|[1-9]\d\|1[0-1]\d\|12[0-8])$</pre>		<pre>(^(([0-9a-fA-F]{4}:){7}[0-9a-fA-F]{4})\|(^([0-9a-fA-F]{1,4}:){7}[0-9a-fA-F]{1,4}))\/([1-9]\|[1-9]\d\|1[0-1]\d\|12[0-8])$</pre>

Paul: added IPv6 subnet ranges

2020-09-30T21:22:28Z

added IPv6 subnet ranges

← Older revision		Revision as of 16:22, 30 September 2020
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	0fff:ffff:ffff:ffff:FFFF:FFFF:FFFF:FFFF (invalid due to leading 0 in first hextet group)</pre>		0fff:ffff:ffff:ffff:FFFF:FFFF:FFFF:FFFF (invalid due to leading 0 in first hextet group)</pre>

			==== IPv6 with slash & subnet mask ====

			<pre>(^(([0-9a-fA-F]{4}:){7}[0-9a-fA-F]{4})\|(^([0-9a-fA-F]{1,4}:){7}[0-9a-fA-F]{1,4}))\/([1-9]\|[1-9]\d\|1[0-1]\d\|12[0-8])$</pre>

			Some test formats:
			<pre>0:0:0:0:0:0:0:0/69 < - matches
			0:0:0:0:0:0:0:0/1 < - matches
			7:6:5:4:3:2:1:0/10 < - matches
			7:6:5:4:3:2:1:0/99 < - matches
			7:6:5:4:3:2:1:0/128 < - matches
			7:6:5:4:3:2:1:0/129 < - no match
			7:6:5:4:3:2:1:0/0 < - no match
			ffff:ffff:ffff:ffff:FFFF:FFFF:FFFF:FFFF/55 < - matches
			fff:ffff:ffff:ffff:FFFF:FFFF:FFFF:FFFF/119 < - matches
			2001:0db8:0000:0000:0000:ff00:0042:8329/0 < - no match
			2001:0db8:0000:0000:0000:ff00:0042:8329/20 < - matches
			2001:db8:0:0:0:ff00:42:8329/9 < - matches</pre>

	=== IPv4 & IPv6 combined regex ===		=== IPv4 & IPv6 combined regex ===

Paul: /* IPv4 and IPv6 network and masks */

2020-09-30T21:07:14Z

IPv4 and IPv6 network and masks

← Older revision		Revision as of 16:07, 30 September 2020
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	==== IPv4 and IPv6 network and masks ====		==== IPv4 and IPv6 network and masks ====

			<pre>(^(([0-9a-fA-F]{1,4}:){4,7}[0-9a-fA-F]{1,4})\/([1-9]\|[1-9]\d\|1[0-1]\d\|12[0-8])$)\|(^([0-9a-fA-F]{4}:){7}[0-9a-fA-F]{4}\/([1-9]\|[1-9]\d\|1[0-1]\d\|12[0-8])$)\|(^(([1-9]\|[1-9]\d\|1\d\d\|2[0-4]\d\|25[0-5])\.)((\d\|[1-9]\d\|1\d\d\|2[0-4]\d\|25[0-5])\.){2}(\d{1,2}\|1\d\d\|2[0-4]\d\|25[0-5])\/([1-9]\|[1-9]\d\|1[0-1]\d\|12[0-8])$)</pre>

			Some examples

			<pre>0:0:0:0:0:0:0:0/1 < - matches
			0:0:0:0:0:0:0:0/1 < - matches
			7:6:5:4:3:2:1:0/10 < - matches
			7:6:5:4:3:2:1:0/99 < - matches
			7:6:5:4:3:2:1:0/128 < - matches
			7:6:5:4:3:2:1:0/129 < - no match
			7:6:5:4:3:2:1:0/0 < - no match
			ffff:ffff:ffff:ffff:FFFF:FFFF:FFFF:FFFF/69 < - matches
			fff:ffff:ffff:ffff:FFFF:FFFF:FFFF:FFFF/119 < - matches
			2001:0db8:0000:0000:0000:ff00:0042:8329/0 < - no match
			2001:db8:0:0:0:ff00:42:8329/9 < - matches
			1.0.0.0/1 < - matches
			1.0.0.255/30 < - matches
			1.255.255.255/24 < - matches
			255.255.255.255/10 < - matches
			1.0.0.0/100 < - matches
			1.0.0.255/0 < - no match</pre>

	=== Ethernet MAC address examples ===		=== Ethernet MAC address examples ===

Paul: /* IPv4 with slash and network mask */

2020-09-30T21:03:55Z

IPv4 with slash and network mask

← Older revision		Revision as of 16:03, 30 September 2020
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	1.255.255.255/24 < - matches		1.255.255.255/24 < - matches
	255.255.255.255/10 < - matches		255.255.255.255/10 < - matches
	1.0.0.0/100 < - ~~no match~~		1.0.0.0/100 < - matches
	1.0.0.255/0 < - no match</pre>		1.0.0.255/0 < - no match</pre>

Paul: /* IPv4 & IPv6 combined regex */

2020-09-30T21:02:55Z

IPv4 & IPv6 combined regex

← Older revision		Revision as of 16:02, 30 September 2020
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	<pre>(^(([0-9a-fA-F]{1,4}:){4,7}[0-9a-fA-F]{1,4})$)\|(^([0-9a-fA-F]{4}:){7}[0-9a-fA-F]{4}$)\|(^(([1-9]\|[1-9]\d\|1\d\d\|2[0-4]\d\|25[0-5])\.)((\d\|[1-9]\d\|1\d\d\|2[0-4]\d\|25[0-5])\.){2}(\d{1,2}\|1\d\d\|2[0-4]\d\|25[0-5])$)</pre>		<pre>(^(([0-9a-fA-F]{1,4}:){4,7}[0-9a-fA-F]{1,4})$)\|(^([0-9a-fA-F]{4}:){7}[0-9a-fA-F]{4}$)\|(^(([1-9]\|[1-9]\d\|1\d\d\|2[0-4]\d\|25[0-5])\.)((\d\|[1-9]\d\|1\d\d\|2[0-4]\d\|25[0-5])\.){2}(\d{1,2}\|1\d\d\|2[0-4]\d\|25[0-5])$)</pre>

			==== IPv4 and IPv6 network and masks ====

	=== Ethernet MAC address examples ===		=== Ethernet MAC address examples ===

Paul: /* IPv4 with slash and network mask */

2020-09-30T20:49:41Z

IPv4 with slash and network mask

← Older revision		Revision as of 15:49, 30 September 2020
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	==== IPv4 with slash and network mask ====		==== IPv4 with slash and network mask ====
	<pre>		<pre>
	^(([1-9]\|[1-9]\d\|1\d\d\|2[0-4]\d\|25[0-5])\.)((\d\|[1-9]\d\|1\d\d\|2[0-4]\d\|25[0-5])\.){2}(\d{1,2}\|1\d\d\|2[0-4]\d\|25[0-5])\/([1-9]\|[1-2]\d\|3[0-2])$		^(([1-9]\|[1-9]\d\|1\d\d\|2[0-4]\d\|25[0-5])\.)((\d\|[1-9]\d\|1\d\d\|2[0-4]\d\|25[0-5])\.){2}(\d{1,2}\|1\d\d\|2[0-4]\d\|25[0-5])\/([1-9]\|[1-2]\d\|3[0-2])$</pre>

	1.0.0.0/1 < - matches		Some examples to test:
			<pre>1.0.0.0/1 < - matches
	1.0.0.255/30 < - matches		1.0.0.255/30 < - matches
	1.255.255.255/24 < - matches		1.255.255.255/24 < - matches

Paul: added IPv4 ranges

2020-09-30T20:48:47Z

added IPv4 ranges

← Older revision		Revision as of 15:48, 30 September 2020
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	256.255.255.255 < - no match</pre>		256.255.255.255 < - no match</pre>

			==== IPv4 with slash and network mask ====
			<pre>
			^(([1-9]\|[1-9]\d\|1\d\d\|2[0-4]\d\|25[0-5])\.)((\d\|[1-9]\d\|1\d\d\|2[0-4]\d\|25[0-5])\.){2}(\d{1,2}\|1\d\d\|2[0-4]\d\|25[0-5])\/([1-9]\|[1-2]\d\|3[0-2])$

			1.0.0.0/1 < - matches
			1.0.0.255/30 < - matches
			1.255.255.255/24 < - matches
			255.255.255.255/10 < - matches
			1.0.0.0/100 < - no match
			1.0.0.255/0 < - no match</pre>

	=== IPv6 address examples (hexadecimal formats only) ===		=== IPv6 address examples (hexadecimal formats only) ===

Paul: added MAC regex examples

2020-09-30T20:27:01Z

added MAC regex examples

← Older revision		Revision as of 15:27, 30 September 2020
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	=== Ethernet MAC address examples ===		=== Ethernet MAC address examples ===

			The following MAC address regex examples match lower or upper case hexadecimal values.

			MAC address format using hyphen between each octet (default output for PowerShell)

			<pre>^([0-9a-fA-F]{2}-){5}[0-9a-fA-F]{2}$

			98-E7-43-D1-74-D4 < - matches</pre>

			MAC address format using colon (default for Linux)

			<pre>^([0-9a-fA-F]{2}:){5}[0-9a-fA-F]{2}$

			98:E7:43:-D1:74:D4 < - matches</pre>

			MAC address format without any delimiters

			<pre>^[0-9a-fA-F]{12}$

			98E743D174D4 < - matches</pre>

			Combine all three above regex to match any of three

			<pre>(^([0-9a-fA-F]{2}-){5}[0-9a-fA-F]{2}$)\|(^([0-9a-fA-F]{2}:){5}[0-9a-fA-F]{2}$)\|(^[0-9a-fA-F]{12}$)

			98-E7-43-D1-74-D4 < - matches
			98:E7:43:D1:74:D4 < - matches
			98E743D174D4 < - matches</pre>

			''Note that you must assert start and end characters within the groups above.''

			If you use <code>^(([0-9a-fA-F]{2}-){5}[0-9a-fA-F]{2})\|(([0-9a-fA-F]{2}:){5}[0-9a-fA-F]{2})\|([0-9a-fA-F]{12})$</code> (assertions are outside groups) then invalid values would be matched:

			<pre>98-E7-43-D1-74-D4
			98-E7-43-D1-74-D40 < - invalid MAC, but matched regex

			98:E7:43:D1:74:D4
			98:E7:43:D1:74:D40 < - invalid MAC, but matched regex

			98E743D174D4
			98E743D174D40 < - invalid MAC, but matched regex</pre>

	=== My regex notes for checking an ASN.1 GeneralizedTime type ===		=== My regex notes for checking an ASN.1 GeneralizedTime type ===