gss_wrap_size_limit()--Determine Largest Message that can be Wrapped

Syntax

 #include <gssapi.h>

 OM_uint32 gss_wrap_size_limit (
     OM_uint32 *    minor_status,
     gss_ctx_id_t     context_handle,  
     int      conf_req,
     gss_qop_t      qop_req,
     OM_uint32      size_req,
     OM_uint32 *    max_size);

  Service Program Name: QSYS/QKRBGSS

  Default public authority: *USE

  Threadsafe: Yes

The gss_wrap_size_limit() function determines the largest message that can be processed by the gss_wrap() routine without exceeding the specified output token size.

Parameters

minor_status (Output)

A status code from the security mechanism.

context_handle (Input)

The security context that will be associated with the messages.

conf_req (Input)

Whether confidentiality services will be requested for the messages as follows:

TRUE

Both confidentiality and integrity and authentication services will be requested.

FALSE

Only integrity and authentication services will be requested.

qop_req (Input)

The quality of protection that will be used with the messages. Specify GSS_C_QOP_DEFAULT to use the default quality of protection as defined by the selected security mechanism.

The Kerberos security mechanism supports three quality of protection levels as follows (in decreasing order or speed):

GSS_KRB5_INTEG_C_QOP_MD5

Truncated MD5

GSS_KRB5_INTEG_C_QOP_DES_MD5

DES_MAC of an MD5 hash (default)

GSS_KRB5_INTEG_C_QOP_DES_MAC

Normal DES_MAC algorithm

size_req (Input)

The maximum output token size.

max_size (Output)

The maximum message size that can be processed without exceeding the specified maximum token size.

Return Value

The return value is one of the following status codes:

GSS_S_BAD_QOP: The quality of protection requested is not valid.
GSS_S_COMPLETE: The routine completed successfully.
GSS_S_CONTEXT_EXPIRED: The context identifier provided by the caller has expired.
GSS_S_FAILURE: The routine failed for reasons that are not defined at the GSS level. The minor_status return parameter contains a mechanism-dependent error code describing the reason for the failure.
GSS_S_NO_CONTEXT: The context identifier provided by the caller does not refer to a valid security context.

Authorities

Object Referred to

Data Authority Required

Each directory in the path name preceding the configuration file

Configuration file

Error Messages

Message ID

Error Message Text

CPE3418 E

Possible APAR condition or hardware failure.

API introduced: V5R1

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