2 {- OpenSSL::safe::output_do_not_edit_headers(); -}
6 openssl-sess_id - SSL/TLS session handling command
12 [B<-inform> B<DER>|B<PEM>]
13 [B<-outform> B<DER>|B<PEM>|B<NSS>]
23 This command processes the encoded version of the SSL session
24 structure and optionally prints out SSL session details (for example
25 the SSL session master key) in human readable format. Since this is a
26 diagnostic tool that needs some knowledge of the SSL protocol to use
27 properly, most users will not need to use it.
29 The precise format of the data can vary across OpenSSL versions and
38 Print out a usage message.
40 =item B<-inform> B<DER>|B<PEM>, B<-outform> B<DER>|B<PEM>|B<NSS>
42 The input and output formats; the default is PEM.
43 See L<openssl(1)/Format Options> for details.
45 For B<NSS> output, the session ID and master key are reported in NSS "keylog"
48 =item B<-in> I<filename>
50 This specifies the input filename to read session information from or standard
53 =item B<-out> I<filename>
55 This specifies the output filename to write session information to or standard
56 output if this option is not specified.
60 Prints out the various public or private key components in
61 plain text in addition to the encoded version.
65 If a certificate is present in the session it will be output using this option,
66 if the B<-text> option is also present then it will be printed out in text form.
70 This option prevents output of the encoded version of the session.
72 =item B<-context> I<ID>
74 This option can set the session id so the output session information uses the
75 supplied ID. The ID can be any string of characters. This option won't normally
87 Session-ID: 871E62626C554CE95488823752CBD5F3673A3EF3DCE9C67BD916C809914B40ED
88 Session-ID-ctx: 01000000
89 Master-Key: A7CEFC571974BE02CAC305269DC59F76EA9F0B180CB6642697A68251F2D2BB57E51DBBB4C7885573192AE9AEE220FACD
93 Verify return code 0 (ok)
95 These are described below in more detail.
101 This is the protocol in use TLSv1.3, TLSv1.2, TLSv1.1, TLSv1 or SSLv3.
105 The cipher used this is the actual raw SSL or TLS cipher code, see the SSL
106 or TLS specifications for more information.
110 The SSL session ID in hex format.
112 =item B<Session-ID-ctx>
114 The session ID context in hex format.
118 This is the SSL session master key.
122 This is the session start time represented as an integer in standard
127 The timeout in seconds.
129 =item B<Verify return code>
131 This is the return code when an SSL client certificate is verified.
137 Since the SSL session output contains the master key it is
138 possible to read the contents of an encrypted session using this
139 information. Therefore appropriate security precautions should be taken if
140 the information is being output by a "real" application. This is however
141 strongly discouraged and should only be used for debugging purposes.
145 The cipher and start time should be printed out in human readable form.
150 L<openssl-ciphers(1)>,
151 L<openssl-s_server(1)>
155 Copyright 2000-2020 The OpenSSL Project Authors. All Rights Reserved.
157 Licensed under the Apache License 2.0 (the "License"). You may not use
158 this file except in compliance with the License. You can obtain a copy
159 in the file LICENSE in the source distribution or at
160 L<https://www.openssl.org/source/license.html>.