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gss_export_sec_context(3gss)

gss...ext(3gss) Generic Security Services API Library Functionsgss...ext(3gss)

NAME
       gss_export_sec_context - transfer a security context to another process

SYNOPSIS
       cc [ flag... ] file... -lgss  [ library... ]
       #include <gssapi/gssapi.h>

       OM_uint32 gss_export_sec_context(OM_uint32 *minor_status,
            gss_ctx_id_t *context_handle,gss_buffer_t interprocess_token);


DESCRIPTION
       The  gss_export_sec_context()  function generates an interprocess token
       for  transfer  to  another  process  within  an  end  system.   gss_ex‐
       port_sec_context()  and  gss_import_sec_context() allow a security con‐
       text to be transferred between processes on a single machine.


       The gss_export_sec_context() function supports the sharing of work  be‐
       tween  multiple  processes.  This routine is typically used by the con‐
       text-acceptor, in an application where a single process receives incom‐
       ing connection requests and accepts security contexts over  them,  then
       passes  the established context to one or more other processes for mes‐
       sage exchange. gss_export_sec_context() deactivates the  security  con‐
       text  for  the calling process and creates an interprocess token which,
       when passed to gss_import_sec_context() in another process, reactivates
       the context in the second process. Only a  single  instantiation  of  a
       given  context can be active at any one time; a subsequent attempt by a
       context exporter to access the exported security context will fail.


       The interprocess token may contain security-sensitive information,  for
       example  cryptographic keys.  While mechanisms are encouraged to either
       avoid placing such sensitive information within interprocess tokens  or
       to encrypt the token before returning it to the application, in a typi‐
       cal  object-library GSS-API implementation, this might not be possible.
       Thus, the application must take care to protect the interprocess  token
       and ensure that any process to which the token is transferred is trust‐
       worthy.  If  creation of the interprocess token is successful, the GSS-
       API deallocates all process-wide resources associated with the security
       context and sets the context_handle to GSS_C_NO_CONTEXT. In  the  event
       of  an error that makes it impossible to complete the export of the se‐
       curity context, the function does not return an interprocess token  and
       leaves  the security context referenced by the context_handle parameter
       untouched.


       Sun's implementation of gss_export_sec_context() does not  encrypt  the
       interprocess  token.  The interprocess token is serialized before it is
       transferred to another process.

PARAMETERS
       The parameter descriptions for gss_export_sec_context() are as follows:

       minor_status          A mechanism-specific status code.


       context_handle        Context handle identifying the context to  trans‐
                             fer.


       interprocess_token    Token  to be transferred to target process. Stor‐
                             age associated with this token must be  freed  by
                             the  application after use with a call to gss_re‐
                             lease_buffer(3GSS).


ERRORS
       gss_export_sec_context() returns one of the following status codes:

       GSS_S_COMPLETE           Successful completion.


       GSS_S_CONTEXT_EXPIRED    The context has expired.


       GSS_S_NO_CONTEXT         The context was invalid.


       GSS_S_UNAVAILABLE        The operation is not supported.


       GSS_S_FAILURE            The underlying mechanism detected an error for
                                which no specific GSS status code is  defined.
                                The mechanism-specific status code reported by
                                means  of  the  minor_status parameter details
                                the error condition.


ATTRIBUTES
       See attributes(7) for descriptions of the following attributes:



       tab()  box;  cw(2.75i)  |cw(2.75i)  lw(2.75i)   |lw(2.75i)   ATTRIBUTE
       TYPEATTRIBUTE VALUE _ MT LevelSafe



ATTRIBUTES
       See attributes(7) for descriptions of the following attributes:

       box; cbp-1 | cbp-1 l | l .  ATTRIBUTE TYPE ATTRIBUTE VALUE = Availabil‐
       ity   security/kerberos-5 = Stability Pass-through committed

SEE ALSO
       gss_accept_sec_context(3GSS),             gss_import_sec_context(3GSS),
       gss_init_sec_context(3GSS), gss_release_buffer(3GSS), attributes(7)






NOTES
       Source code for open source software components in Oracle  Solaris  can
       be found at https://www.oracle.com/downloads/opensource/solaris-source-
       code-downloads.html.

       This software was built from source available at:
       https://github.com/oracle/solaris-userland

       The original community source was downloaded from:
       http://web.mit.edu/kerberos/dist/krb5/1.20/krb5-1.20.2.tar.gz

       Further information about this software can be found on the open source
       community website at http://web.mit.edu/kerberos/.

Solaris 11.4                      22 Aug 2011                  gss...ext(3gss)
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