f4401cd869
alter des.h to be friendly with openssl/des.h (you can include both in the same file) make libkrb to depend on libdes. bump major. massage various portioin of heimdal to be friendly with openssl 0.9.7b.
256 lines
8.3 KiB
Groff
256 lines
8.3 KiB
Groff
.\" $NetBSD: openssl_asn1parse.1,v 1.10 2003/07/24 14:16:50 itojun Exp $
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.\" Thu Jul 24 13:07:41 2003
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.\" ======================================================================
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.\"
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.IX Title "ASN1PARSE 1"
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.TH ASN1PARSE 1 "0.9.7b" "2000-01-21" "OpenSSL"
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.UC
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.SH "NAME"
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asn1parse \- \s-1ASN\s0.1 parsing tool
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.SH "LIBRARY"
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libcrypto, -lcrypto
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.SH "SYNOPSIS"
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.IX Header "SYNOPSIS"
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\&\fBopenssl\fR \fBasn1parse\fR
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[\fB\-inform PEM|DER\fR]
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[\fB\-in filename\fR]
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[\fB\-out filename\fR]
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[\fB\-noout\fR]
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[\fB\-offset number\fR]
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[\fB\-length number\fR]
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[\fB\-i\fR]
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[\fB\-oid filename\fR]
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[\fB\-strparse offset\fR]
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.SH "DESCRIPTION"
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.IX Header "DESCRIPTION"
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The \fBasn1parse\fR command is a diagnostic utility that can parse \s-1ASN\s0.1
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structures. It can also be used to extract data from \s-1ASN\s0.1 formatted data.
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.SH "OPTIONS"
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.IX Header "OPTIONS"
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.Ip "\fB\-inform\fR \fBDER|PEM\fR" 4
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.IX Item "-inform DER|PEM"
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the input format. \fB\s-1DER\s0\fR is binary format and \fB\s-1PEM\s0\fR (the default) is base64
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encoded.
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.Ip "\fB\-in filename\fR" 4
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.IX Item "-in filename"
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the input file, default is standard input
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.Ip "\fB\-out filename\fR" 4
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.IX Item "-out filename"
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output file to place the \s-1DER\s0 encoded data into. If this
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option is not present then no data will be output. This is most useful when
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combined with the \fB\-strparse\fR option.
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.Ip "\fB\-noout\fR" 4
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.IX Item "-noout"
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don't output the parsed version of the input file.
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.Ip "\fB\-offset number\fR" 4
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.IX Item "-offset number"
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starting offset to begin parsing, default is start of file.
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.Ip "\fB\-length number\fR" 4
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.IX Item "-length number"
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number of bytes to parse, default is until end of file.
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.Ip "\fB\-i\fR" 4
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.IX Item "-i"
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indents the output according to the \*(L"depth\*(R" of the structures.
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.Ip "\fB\-oid filename\fR" 4
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.IX Item "-oid filename"
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a file containing additional \s-1OBJECT\s0 IDENTIFIERs (OIDs). The format of this
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file is described in the \s-1NOTES\s0 section below.
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.Ip "\fB\-strparse offset\fR" 4
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.IX Item "-strparse offset"
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parse the contents octets of the \s-1ASN\s0.1 object starting at \fBoffset\fR. This
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option can be used multiple times to \*(L"drill down\*(R" into a nested structure.
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.Sh "\s-1OUTPUT\s0"
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.IX Subsection "OUTPUT"
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The output will typically contain lines like this:
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.PP
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.Vb 1
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\& 0:d=0 hl=4 l= 681 cons: SEQUENCE
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.Ve
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\&.....
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.PP
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.Vb 10
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\& 229:d=3 hl=3 l= 141 prim: BIT STRING
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\& 373:d=2 hl=3 l= 162 cons: cont [ 3 ]
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\& 376:d=3 hl=3 l= 159 cons: SEQUENCE
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\& 379:d=4 hl=2 l= 29 cons: SEQUENCE
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\& 381:d=5 hl=2 l= 3 prim: OBJECT :X509v3 Subject Key Identifier
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\& 386:d=5 hl=2 l= 22 prim: OCTET STRING
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\& 410:d=4 hl=2 l= 112 cons: SEQUENCE
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\& 412:d=5 hl=2 l= 3 prim: OBJECT :X509v3 Authority Key Identifier
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\& 417:d=5 hl=2 l= 105 prim: OCTET STRING
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\& 524:d=4 hl=2 l= 12 cons: SEQUENCE
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.Ve
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\&.....
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.PP
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This example is part of a self signed certificate. Each line starts with the
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offset in decimal. \fBd=XX\fR specifies the current depth. The depth is increased
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within the scope of any \s-1SET\s0 or \s-1SEQUENCE\s0. \fBhl=XX\fR gives the header length
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(tag and length octets) of the current type. \fBl=XX\fR gives the length of
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the contents octets.
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.PP
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The \fB\-i\fR option can be used to make the output more readable.
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.PP
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Some knowledge of the \s-1ASN\s0.1 structure is needed to interpret the output.
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.PP
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In this example the \s-1BIT\s0 \s-1STRING\s0 at offset 229 is the certificate public key.
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The contents octets of this will contain the public key information. This can
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be examined using the option \fB\-strparse 229\fR to yield:
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.PP
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.Vb 3
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\& 0:d=0 hl=3 l= 137 cons: SEQUENCE
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\& 3:d=1 hl=3 l= 129 prim: INTEGER :E5D21E1F5C8D208EA7A2166C7FAF9F6BDF2059669C60876DDB70840F1A5AAFA59699FE471F379F1DD6A487E7D5409AB6A88D4A9746E24B91D8CF55DB3521015460C8EDE44EE8A4189F7A7BE77D6CD3A9AF2696F486855CF58BF0EDF2B4068058C7A947F52548DDF7E15E96B385F86422BEA9064A3EE9E1158A56E4A6F47E5897
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\& 135:d=1 hl=2 l= 3 prim: INTEGER :010001
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.Ve
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.SH "NOTES"
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.IX Header "NOTES"
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If an \s-1OID\s0 is not part of OpenSSL's internal table it will be represented in
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numerical form (for example 1.2.3.4). The file passed to the \fB\-oid\fR option
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allows additional OIDs to be included. Each line consists of three columns,
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the first column is the \s-1OID\s0 in numerical format and should be followed by white
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space. The second column is the \*(L"short name\*(R" which is a single word followed
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by white space. The final column is the rest of the line and is the
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\&\*(L"long name\*(R". \fBasn1parse\fR displays the long name. Example:
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.PP
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\&\f(CW\*(C`1.2.3.4 shortName A long name\*(C'\fR
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.SH "BUGS"
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.IX Header "BUGS"
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There should be options to change the format of input lines. The output of some
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\&\s-1ASN\s0.1 types is not well handled (if at all).
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