6 sess_id - SSL/TLS session handling utility
13 [B<-outform PEM|DER|NSS>]
22 The B<sess_id> process the encoded version of the SSL session structure
23 and optionally prints out SSL session details (for example the SSL session
24 master key) in human readable format. Since this is a diagnostic tool that
25 needs some knowledge of the SSL protocol to use properly, most users will
32 Print out a usage message.
34 =item B<-inform DER|PEM>
36 This specifies the input format. The B<DER> option uses an ASN1 DER encoded
37 format containing session details. The precise format can vary from one version
38 to the next. The B<PEM> form is the default format: it consists of the B<DER>
39 format base64 encoded with additional header and footer lines.
41 =item B<-outform DER|PEM|NSS>
43 This specifies the output format. The B<PEM> and B<DER> options have the same meaning
44 as the B<-inform> option. The B<NSS> option outputs the session id and the master key
49 This specifies the input filename to read session information from or standard
52 =item B<-out filename>
54 This specifies the output filename to write session information to or standard
55 output if this option is not specified.
59 prints out the various public or private key components in
60 plain text in addition to the encoded version.
64 if a certificate is present in the session it will be output using this option,
65 if the B<-text> option is also present then it will be printed out in text form.
69 this option prevents output of the encoded version of the session.
73 this option can set the session id so the output session information uses the
74 supplied ID. The ID can be any string of characters. This option wont normally
86 Session-ID: 871E62626C554CE95488823752CBD5F3673A3EF3DCE9C67BD916C809914B40ED
87 Session-ID-ctx: 01000000
88 Master-Key: A7CEFC571974BE02CAC305269DC59F76EA9F0B180CB6642697A68251F2D2BB57E51DBBB4C7885573192AE9AEE220FACD
92 Verify return code 0 (ok)
94 Theses are described below in more detail.
100 this is the protocol in use TLSv1.2, TLSv1.1, TLSv1 or SSLv3.
104 the cipher used this is the actual raw SSL or TLS cipher code, see the SSL
105 or TLS specifications for more information.
109 the SSL session ID in hex format.
111 =item B<Session-ID-ctx>
113 the session ID context in hex format.
117 this is the SSL session master key.
121 this is the session start time represented as an integer in standard Unix format.
125 the timeout in seconds.
127 =item B<Verify return code>
129 this is the return code when an SSL client certificate is verified.
135 The PEM encoded session format uses the header and footer lines:
137 -----BEGIN SSL SESSION PARAMETERS-----
138 -----END SSL SESSION PARAMETERS-----
140 Since the SSL session output contains the master key it is possible to read the contents
141 of an encrypted session using this information. Therefore appropriate security precautions
142 should be taken if the information is being output by a "real" application. This is
143 however strongly discouraged and should only be used for debugging purposes.
147 The cipher and start time should be printed out in human readable form.
151 L<ciphers(1)>, L<s_server(1)>