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Diffstat (limited to 'upstream/debian-bookworm/man1/openssl-asn1parse.1ssl')
| -rw-r--r-- | upstream/debian-bookworm/man1/openssl-asn1parse.1ssl | 344 |
1 files changed, 344 insertions, 0 deletions
diff --git a/upstream/debian-bookworm/man1/openssl-asn1parse.1ssl b/upstream/debian-bookworm/man1/openssl-asn1parse.1ssl new file mode 100644 index 00000000..43e291ce --- /dev/null +++ b/upstream/debian-bookworm/man1/openssl-asn1parse.1ssl @@ -0,0 +1,344 @@ +.\" Automatically generated by Pod::Man 4.14 (Pod::Simple 3.43) +.\" +.\" Standard preamble: +.\" ======================================================================== +.de Sp \" Vertical space (when we can't use .PP) +.if t .sp .5v +.if n .sp +.. +.de Vb \" Begin verbatim text +.ft CW +.nf +.ne \\$1 +.. +.de Ve \" End verbatim text +.ft R +.fi +.. +.\" Set up some character translations and predefined strings. \*(-- will +.\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left +.\" double quote, and \*(R" will give a right double quote. \*(C+ will +.\" give a nicer C++. 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Always turn off hyphenation; it makes +.\" way too many mistakes in technical documents. +.if n .ad l +.nh +.SH "NAME" +openssl\-asn1parse \- ASN.1 parsing command +.SH "SYNOPSIS" +.IX Header "SYNOPSIS" +\&\fBopenssl\fR \fBasn1parse\fR +[\fB\-help\fR] +[\fB\-inform\fR \fB\s-1DER\s0\fR|\fB\s-1PEM\s0\fR] +[\fB\-in\fR \fIfilename\fR] +[\fB\-out\fR \fIfilename\fR] +[\fB\-noout\fR] +[\fB\-offset\fR \fInumber\fR] +[\fB\-length\fR \fInumber\fR] +[\fB\-i\fR] +[\fB\-oid\fR \fIfilename\fR] +[\fB\-dump\fR] +[\fB\-dlimit\fR \fInum\fR] +[\fB\-strparse\fR \fIoffset\fR] +[\fB\-genstr\fR \fIstring\fR] +[\fB\-genconf\fR \fIfile\fR] +[\fB\-strictpem\fR] +[\fB\-item\fR \fIname\fR] +.SH "DESCRIPTION" +.IX Header "DESCRIPTION" +This command is a diagnostic utility that can parse \s-1ASN.1\s0 structures. +It can also be used to extract data from \s-1ASN.1\s0 formatted data. +.SH "OPTIONS" +.IX Header "OPTIONS" +.IP "\fB\-help\fR" 4 +.IX Item "-help" +Print out a usage message. +.IP "\fB\-inform\fR \fB\s-1DER\s0\fR|\fB\s-1PEM\s0\fR" 4 +.IX Item "-inform DER|PEM" +The input format; the default is \fB\s-1PEM\s0\fR. +See \fBopenssl\-format\-options\fR\|(1) for details. +.IP "\fB\-in\fR \fIfilename\fR" 4 +.IX Item "-in filename" +The input file, default is standard input. +.IP "\fB\-out\fR \fIfilename\fR" 4 +.IX Item "-out filename" +Output file to place the \s-1DER\s0 encoded data into. If this +option is not present then no data will be output. This is most useful when +combined with the \fB\-strparse\fR option. +.IP "\fB\-noout\fR" 4 +.IX Item "-noout" +Don't output the parsed version of the input file. +.IP "\fB\-offset\fR \fInumber\fR" 4 +.IX Item "-offset number" +Starting offset to begin parsing, default is start of file. +.IP "\fB\-length\fR \fInumber\fR" 4 +.IX Item "-length number" +Number of bytes to parse, default is until end of file. +.IP "\fB\-i\fR" 4 +.IX Item "-i" +Indents the output according to the \*(L"depth\*(R" of the structures. +.IP "\fB\-oid\fR \fIfilename\fR" 4 +.IX Item "-oid filename" +A file containing additional \s-1OBJECT\s0 IDENTIFIERs (OIDs). The format of this +file is described in the \s-1NOTES\s0 section below. +.IP "\fB\-dump\fR" 4 +.IX Item "-dump" +Dump unknown data in hex format. +.IP "\fB\-dlimit\fR \fInum\fR" 4 +.IX Item "-dlimit num" +Like \fB\-dump\fR, but only the first \fBnum\fR bytes are output. +.IP "\fB\-strparse\fR \fIoffset\fR" 4 +.IX Item "-strparse offset" +Parse the contents octets of the \s-1ASN.1\s0 object starting at \fBoffset\fR. This +option can be used multiple times to \*(L"drill down\*(R" into a nested structure. +.IP "\fB\-genstr\fR \fIstring\fR, \fB\-genconf\fR \fIfile\fR" 4 +.IX Item "-genstr string, -genconf file" +Generate encoded data based on \fIstring\fR, \fIfile\fR or both using +\&\fBASN1_generate_nconf\fR\|(3) format. If \fIfile\fR only is +present then the string is obtained from the default section using the name +\&\fBasn1\fR. The encoded data is passed through the \s-1ASN1\s0 parser and printed out as +though it came from a file, the contents can thus be examined and written to a +file using the \fB\-out\fR option. +.IP "\fB\-strictpem\fR" 4 +.IX Item "-strictpem" +If this option is used then \fB\-inform\fR will be ignored. Without this option any +data in a \s-1PEM\s0 format input file will be treated as being base64 encoded and +processed whether it has the normal \s-1PEM BEGIN\s0 and \s-1END\s0 markers or not. This +option will ignore any data prior to the start of the \s-1BEGIN\s0 marker, or after an +\&\s-1END\s0 marker in a \s-1PEM\s0 file. +.IP "\fB\-item\fR \fIname\fR" 4 +.IX Item "-item name" +Attempt to decode and print the data as an \fB\s-1ASN1_ITEM\s0\fR \fIname\fR. This can be +used to print out the fields of any supported \s-1ASN.1\s0 structure if the type is +known. +.SS "Output" +.IX Subsection "Output" +The output will typically contain lines like this: +.PP +.Vb 1 +\& 0:d=0 hl=4 l= 681 cons: SEQUENCE +.Ve +.PP +\&..... +.PP +.Vb 10 +\& 229:d=3 hl=3 l= 141 prim: BIT STRING +\& 373:d=2 hl=3 l= 162 cons: cont [ 3 ] +\& 376:d=3 hl=3 l= 159 cons: SEQUENCE +\& 379:d=4 hl=2 l= 29 cons: SEQUENCE +\& 381:d=5 hl=2 l= 3 prim: OBJECT :X509v3 Subject Key Identifier +\& 386:d=5 hl=2 l= 22 prim: OCTET STRING +\& 410:d=4 hl=2 l= 112 cons: SEQUENCE +\& 412:d=5 hl=2 l= 3 prim: OBJECT :X509v3 Authority Key Identifier +\& 417:d=5 hl=2 l= 105 prim: OCTET STRING +\& 524:d=4 hl=2 l= 12 cons: SEQUENCE +.Ve +.PP +\&..... +.PP +This example is part of a self-signed certificate. Each line starts with the +offset in decimal. \f(CW\*(C`d=XX\*(C'\fR specifies the current depth. The depth is increased +within the scope of any \s-1SET\s0 or \s-1SEQUENCE.\s0 \f(CW\*(C`hl=XX\*(C'\fR gives the header length +(tag and length octets) of the current type. \f(CW\*(C`l=XX\*(C'\fR gives the length of +the contents octets. +.PP +The \fB\-i\fR option can be used to make the output more readable. +.PP +Some knowledge of the \s-1ASN.1\s0 structure is needed to interpret the output. +.PP +In this example the \s-1BIT STRING\s0 at offset 229 is the certificate public key. +The contents octets of this will contain the public key information. This can +be examined using the option \f(CW\*(C`\-strparse 229\*(C'\fR to yield: +.PP +.Vb 3 +\& 0:d=0 hl=3 l= 137 cons: SEQUENCE +\& 3:d=1 hl=3 l= 129 prim: INTEGER :E5D21E1F5C8D208EA7A2166C7FAF9F6BDF2059669C60876DDB70840F1A5AAFA59699FE471F379F1DD6A487E7D5409AB6A88D4A9746E24B91D8CF55DB3521015460C8EDE44EE8A4189F7A7BE77D6CD3A9AF2696F486855CF58BF0EDF2B4068058C7A947F52548DDF7E15E96B385F86422BEA9064A3EE9E1158A56E4A6F47E5897 +\& 135:d=1 hl=2 l= 3 prim: INTEGER :010001 +.Ve +.SH "NOTES" +.IX Header "NOTES" +If an \s-1OID\s0 is not part of OpenSSL's internal table it will be represented in +numerical form (for example 1.2.3.4). The file passed to the \fB\-oid\fR option +allows additional OIDs to be included. Each line consists of three columns, +the first column is the \s-1OID\s0 in numerical format and should be followed by white +space. The second column is the \*(L"short name\*(R" which is a single word followed +by whitespace. The final column is the rest of the line and is the +\&\*(L"long name\*(R". Example: +.PP +\&\f(CW\*(C`1.2.3.4 shortName A long name\*(C'\fR +.PP +For any \s-1OID\s0 with an associated short and long name, this command will display +the long name. +.SH "EXAMPLES" +.IX Header "EXAMPLES" +Parse a file: +.PP +.Vb 1 +\& openssl asn1parse \-in file.pem +.Ve +.PP +Parse a \s-1DER\s0 file: +.PP +.Vb 1 +\& openssl asn1parse \-inform DER \-in file.der +.Ve +.PP +Generate a simple UTF8String: +.PP +.Vb 1 +\& openssl asn1parse \-genstr \*(AqUTF8:Hello World\*(Aq +.Ve +.PP +Generate and write out a UTF8String, don't print parsed output: +.PP +.Vb 1 +\& openssl asn1parse \-genstr \*(AqUTF8:Hello World\*(Aq \-noout \-out utf8.der +.Ve +.PP +Generate using a config file: +.PP +.Vb 1 +\& openssl asn1parse \-genconf asn1.cnf \-noout \-out asn1.der +.Ve +.PP +Example config file: +.PP +.Vb 1 +\& asn1=SEQUENCE:seq_sect +\& +\& [seq_sect] +\& +\& field1=BOOL:TRUE +\& field2=EXP:0, UTF8:some random string +.Ve +.SH "BUGS" +.IX Header "BUGS" +There should be options to change the format of output lines. The output of some +\&\s-1ASN.1\s0 types is not well handled (if at all). +.SH "SEE ALSO" +.IX Header "SEE ALSO" +\&\fBopenssl\fR\|(1), +\&\fBASN1_generate_nconf\fR\|(3) +.SH "COPYRIGHT" +.IX Header "COPYRIGHT" +Copyright 2000\-2020 The OpenSSL Project Authors. All Rights Reserved. +.PP +Licensed under the Apache License 2.0 (the \*(L"License\*(R"). You may not use +this file except in compliance with the License. You can obtain a copy +in the file \s-1LICENSE\s0 in the source distribution or at +<https://www.openssl.org/source/license.html>. |