5 openssl-sess_id - SSL/TLS session handling utility
11 [B<-inform> B<DER>|B<PEM>]
12 [B<-outform> B<DER>|B<PEM>|B<NSS>]
22 This command processes the encoded version of the SSL session
23 structure and optionally prints out SSL session details (for example
24 the SSL session master key) in human readable format. Since this is a
25 diagnostic tool that needs some knowledge of the SSL protocol to use
26 properly, most users will not need to use it.
28 The precise format of the data can vary across OpenSSL versions and
37 Print out a usage message.
39 =item B<-inform> B<DER>|B<PEM>, B<-outform> B<DER>|B<PEM>|B<NSS>
41 The input and output formats; the default is PEM.
42 See L<openssl(1)/Format Options> for details.
44 For B<NSS> output, the session ID and master key are reported in NSS "keylog"
47 =item B<-in> I<filename>
49 This specifies the input filename to read session information from or standard
52 =item B<-out> I<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.
71 =item B<-context> I<ID>
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 won't 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 TLSv1.3, 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
126 The timeout in seconds.
128 =item B<Verify return code>
130 This is the return code when an SSL client certificate is verified.
136 Since the SSL session output contains the master key it is
137 possible to read the contents of an encrypted session using this
138 information. Therefore appropriate security precautions should be taken if
139 the information is being output by a "real" application. This is however
140 strongly discouraged and should only be used for debugging purposes.
144 The cipher and start time should be printed out in human readable form.
149 L<openssl-ciphers(1)>,
150 L<openssl-s_server(1)>
154 Copyright 2000-2019 The OpenSSL Project Authors. All Rights Reserved.
156 Licensed under the Apache License 2.0 (the "License"). You may not use
157 this file except in compliance with the License. You can obtain a copy
158 in the file LICENSE in the source distribution or at
159 L<https://www.openssl.org/source/license.html>.