openssl_sess_id(1) - NetBSD Manual Pages

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SESS_ID(1)                   OpenSSL                   SESS_ID(1)



NAME

       sess_id - SSL/TLS session handling utility


LIBRARY

       libcrypto, -lcrypto


SYNOPSIS

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


DESCRIPTION

       The sess_id process the encoded version of the SSL session
       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 version to the
           next.  The PEM form is the default format: 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.





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SESS_ID(1)                   OpenSSL                   SESS_ID(1)


       -context ID
           this option can set the session id so the output ses-
           sion information uses the supplied ID. The ID can be
           any string of characters. This option wont normally 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 inte-
           ger in standard Unix format.

       Timeout
           the timeout in seconds.

       Verify return code
           this is the return code when an SSL client certificate
           is verified.





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SESS_ID(1)                   OpenSSL                   SESS_ID(1)



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

       openssl_ciphers(1), openssl_s_server(1)




































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