dumpasn1 - ASN.1 object dump/syntax check program
dumpasn1 [-acdefghilmoprstuvwxz] <file>
An ASN.1 object dump program which will dump data encoded using any of the ASN.1 encoding rules in a variety of user-specified formats.
DumpASN1 - ASN.1 object dump/syntax check program. Copyright Peter Gutmann 1997 - 2016. Last updated 28 September 2020.
- Input options:
- - = Take input from stdin (some options may not work properly) -<number> = Start <number> bytes into the file -- = End of arg list -c<file> = Read Object Identifier info from alternate config file
- (values will override equivalents in global config file)
- Output options:
-f<file> = Dump object at offset -<number> to file (allows data to be
- extracted from encapsulating objects)
-w<number> = Set width of output, default = 80 columns
- Display options:
-a = Print all data in long data blocks, not just the first 128 bytes
-d = Print dots to show column alignment
-g = Display ASN.1 structure outline only (no primitive objects)
-h = Hex dump object header (tag+length) before the decoded output
-hh = Same as -h but display more of the object as hex data
-i = Use shallow indenting, for deeply-nested objects
-l = Long format, display extra info about Object Identifiers
- = Maximum nesting level for which to display content
-p = Pure ASN.1 output without encoding information
-t = Display text values next to hex dump of data
-v = Verbose mode, equivalent to -ahlt
- Format options:
-e = Don't print encapsulated data inside OCTET/BIT STRINGs
-r = Print bits in BIT STRING as encoded in reverse order
-u = Don't format UTCTime/GeneralizedTime string data
-x = Display size and offset in hex not decimal
- Checking options:
-o = Don't check validity of character strings hidden in octet strings
-s = Syntax check only, don't dump ASN.1 structures
-z = Allow zero-length items
Warnings generated by deprecated OIDs require the use of '-l' to be displayed. Program return code is the number of errors found or EXIT_SUCCESS.
This manual page was written by Mathieu Malaterre <email@example.com> for the Debian GNU/Linux system, but may be used by others.
This is the configuration file, it will be searched in this order. It contains OIDs commonly used.
quote from Peter Gutmann:
ASN.1 object dumping code, copyright Peter Gutmann <firstname.lastname@example.org>, based on ASN.1 dump program by David Kemp <email@example.com>, with contributions from various people including Matthew Hamrick <firstname.lastname@example.org>, Bruno Couillard <email@example.com>, Hallvard Furuseth <firstname.lastname@example.org>, Geoff Thorpe <email@example.com>, David Boyce <firstname.lastname@example.org>, John Hughes <email@example.com>, Life is hard, and then you die <firstname.lastname@example.org>, Hans-Olof Hermansson <email@example.com>, Tor Rustad <Tor.Rustad@bbs.no>, Kjetil Barvik <firstname.lastname@example.org>, James Sweeny <email@example.com>, and several other people whose names I've misplaced.
dumpasn1 is available at https://www.cs.auckland.ac.nz/~pgut001/
Copyright Peter Gutmann 1997 - 2016. Last updated 22 October 2019.
|May 2021||dumpasn1 20200928|