SESS_ID(1)                  OpenSSL                  SESS_ID(1)





NAME
       sess_id - SSL/TLS session handling utility

SYNOPSIS
       openssl sess_id [-inform PEM|DER] [-outform PEM|DER]
       [-in filename] [-out filename] [-text] [-noout] [-con-
       text ID]

DESCRIPTION
       The sess_id process the encoded version of the SSL ses-
       sion structure and optionally prints out SSL session
       details (for example the SSL session master key) in
       human readable format. Since this is a diagnostic tool
       that needs some knowledge of the SSL protocol to use
       properly, most users will not need to use it.

       -inform DER|PEM
           This specifies the input format. The DER option uses
           an ASN1 DER encoded format containing session
           details. The precise format can vary from one ver-
           sion to the next.  The PEM form is the default for-
           mat: it consists of the DER format base64 encoded
           with additional header and footer lines.

       -outform DER|PEM
           This specifies the output format, the options have
           the same meaning as the -inform option.

       -in filename
           This specifies the input filename to read session
           information from or standard input by default.

       -out filename
           This specifies the output filename to write session
           information to or standard output if this option is
           not specified.

       -text
           prints out the various public or private key compo-
           nents in plain text in addition to the encoded ver-
           sion.

       -cert
           if a certificate is present in the session it will
           be output using this option, if the -text option is
           also present then it will be printed out in text
           form.

       -noout
           this option prevents output of the encoded version
           of the session.

       -context ID
           this option can set the session id so the output
           session information uses the supplied ID. The ID can
           be any string of characters. This option wont nor-
           mally be used.

OUTPUT
       Typical output:




        SSL-Session:
            Protocol  : TLSv1
            Cipher    : 0016
            Session-ID: 871E62626C554CE95488823752CBD5F3673A3EF3DCE9C67BD916C809914B40ED
            Session-ID-ctx: 01000000
            Master-Key: A7CEFC571974BE02CAC305269DC59F76EA9F0B180CB6642697A68251F2D2BB57E51DBBB4C7885573192AE9AEE220FACD
            Key-Arg   : None
            Start Time: 948459261
            Timeout   : 300 (sec)
            Verify return code 0 (ok)

       Theses are described below in more detail.

       Protocol
           this is the protocol in use TLSv1, SSLv3 or SSLv2.

       Cipher
           the cipher used this is the actual raw SSL or TLS
           cipher code, see the SSL or TLS specifications for
           more information.

       Session-ID
           the SSL session ID in hex format.

       Session-ID-ctx
           the session ID context in hex format.

       Master-Key
           this is the SSL session master key.

       Key-Arg
           the key argument, this is only used in SSL v2.

       Start Time
           this is the session start time represented as an
           integer in standard Unix format.

       Timeout
           the timeout in seconds.

       Verify return code
           this is the return code when an SSL client certifi-
           cate is verified.

NOTES
       The PEM encoded session format uses the header and
       footer lines:

        -----BEGIN SSL SESSION PARAMETERS-----
        -----END SSL SESSION PARAMETERS-----

       Since the SSL session output contains the master key it
       is possible to read the contents of an encrypted session
       using this information. Therefore appropriate security
       precautions should be taken if the information is being
       output by a "real" application. This is however strongly
       discouraged and should only be used for debugging pur-
       poses.

BUGS
       The cipher and start time should be printed out in human
       readable form.

SEE ALSO
       ciphers(1), s_server(1)



0.9.7c                     2000-02-03                SESS_ID(1)
