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Diffstat (limited to 'crypto/openssl/doc/apps/asn1parse.pod')
| -rw-r--r-- | crypto/openssl/doc/apps/asn1parse.pod | 129 |
1 files changed, 0 insertions, 129 deletions
diff --git a/crypto/openssl/doc/apps/asn1parse.pod b/crypto/openssl/doc/apps/asn1parse.pod deleted file mode 100644 index e76e9813abaf..000000000000 --- a/crypto/openssl/doc/apps/asn1parse.pod +++ /dev/null @@ -1,129 +0,0 @@ -=pod - -=head1 NAME - -asn1parse - ASN.1 parsing tool - -=head1 SYNOPSIS - -B<openssl> B<asn1parse> -[B<-inform PEM|DER>] -[B<-in filename>] -[B<-out filename>] -[B<-noout>] -[B<-offset number>] -[B<-length number>] -[B<-i>] -[B<-oid filename>] -[B<-strparse offset>] - -=head1 DESCRIPTION - -The B<asn1parse> command is a diagnostic utility that can parse ASN.1 -structures. It can also be used to extract data from ASN.1 formatted data. - -=head1 OPTIONS - -=over 4 - -=item B<-inform> B<DER|PEM> - -the input format. B<DER> is binary format and B<PEM> (the default) is base64 -encoded. - -=item B<-in filename> - -the input file, default is standard input - -=item B<-out filename> - -output file to place the DER encoded data into. If this -option is not present then no data will be output. This is most useful when -combined with the B<-strparse> option. - -=item B<-noout> - -don't output the parsed version of the input file. - -=item B<-offset number> - -starting offset to begin parsing, default is start of file. - -=item B<-length number> - -number of bytes to parse, default is until end of file. - -=item B<-i> - -indents the output according to the "depth" of the structures. - -=item B<-oid filename> - -a file containing additional OBJECT IDENTIFIERs (OIDs). The format of this -file is described in the NOTES section below. - -=item B<-strparse offset> - -parse the contents octets of the ASN.1 object starting at B<offset>. This -option can be used multiple times to "drill down" into a nested structure. - - -=back - -=head2 OUTPUT - -The output will typically contain lines like this: - - 0:d=0 hl=4 l= 681 cons: SEQUENCE - -..... - - 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 - -..... - -This example is part of a self signed certificate. Each line starts with the -offset in decimal. B<d=XX> specifies the current depth. The depth is increased -within the scope of any SET or SEQUENCE. B<hl=XX> gives the header length -(tag and length octets) of the current type. B<l=XX> gives the length of -the contents octets. - -The B<-i> option can be used to make the output more readable. - -Some knowledge of the ASN.1 structure is needed to interpret the output. - -In this example the BIT STRING 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 B<-strparse 229> to yield: - - 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 - -=head1 NOTES - -If an OID 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 B<-oid> option -allows additional OIDs to be included. Each line consists of three columns, -the first column is the OID in numerical format and should be followed by white -space. The second column is the "short name" which is a single word followed -by white space. The final column is the rest of the line and is the -"long name". B<asn1parse> displays the long name. Example: - -C<1.2.3.4 shortName A long name> - -=head1 BUGS - -There should be options to change the format of input lines. The output of some -ASN.1 types is not well handled (if at all). - -=cut |