6 sess_id - SSL/TLS session handling utility
21 The B<sess_id> process the encoded version of the SSL session structure
22 and optionally prints out SSL session details (for example the SSL session
23 master key) in human readable format. Since this is a diagnostic tool that
24 needs some knowledge of the SSL protocol to use properly, most users will
29 =item B<-inform DER|PEM>
31 This specifies the input format. The B<DER> option uses an ASN1 DER encoded
32 format containing session details. The precise format can vary from one version
33 to the next. The B<PEM> form is the default format: it consists of the B<DER>
34 format base64 encoded with additional header and footer lines.
36 =item B<-outform DER|PEM>
38 This specifies the output format, the options have the same meaning as the
43 This specifies the input filename to read session information from or standard
46 =item B<-out filename>
48 This specifies the output filename to write session information to or standard
49 output if this option is not specified.
53 prints out the various public or private key components in
54 plain text in addition to the encoded version.
58 if a certificate is present in the session it will be output using this option,
59 if the B<-text> option is also present then it will be printed out in text form.
63 this option prevents output of the encoded version of the session.
67 this option can set the session id so the output session information uses the
68 supplied ID. The ID can be any string of characters. This option wont normally
80 Session-ID: 871E62626C554CE95488823752CBD5F3673A3EF3DCE9C67BD916C809914B40ED
81 Session-ID-ctx: 01000000
82 Master-Key: A7CEFC571974BE02CAC305269DC59F76EA9F0B180CB6642697A68251F2D2BB57E51DBBB4C7885573192AE9AEE220FACD
86 Verify return code 0 (ok)
88 Theses are described below in more detail.
94 this is the protocol in use TLSv1, SSLv3 or SSLv2.
98 the cipher used this is the actual raw SSL or TLS cipher code, see the SSL
99 or TLS specifications for more information.
103 the SSL session ID in hex format.
105 =item B<Session-ID-ctx>
107 the session ID context in hex format.
111 this is the SSL session master key.
115 the key argument, this is only used in SSL v2.
119 this is the session start time represented as an integer in standard Unix format.
123 the timeout in seconds.
125 =item B<Verify return code>
127 this is the return code when an SSL client certificate is verified.
133 The PEM encoded session format uses the header and footer lines:
135 -----BEGIN SSL SESSION PARAMETERS-----
136 -----END SSL SESSION PARAMETERS-----
138 Since the SSL session output contains the master key it is possible to read the contents
139 of an encrypted session using this information. Therefore appropriate security precautions
140 should be taken if the information is being output by a "real" application. This is
141 however strongly discouraged and should only be used for debugging purposes.
145 The cipher and start time should be printed out in human readable form.
149 L<ciphers(1)|ciphers(1)>, L<s_server(1)|s_server(1)>