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gss_sign (3)

>> gss_sign (3) ( FreeBSD man: Библиотечные вызовы )

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NAME

gss_get_mic

 
gss_sign

 - Calculate a cryptographic message integrity code (MIC) for a

message; integrity service

SYNOPSIS

#include <gssapi/gssapi.h>
OM_uint32 Fo gss_get_mic Fa OM_uint32 *minor_status Fa const gss_ctx_id_t context_handle Fa gss_qop_t qop_req Fa const gss_buffer_t message_buffer Fa gss_buffer_t msg_token Fc Ft OM_uint32 Fo gss_sign Fa OM_uint32 *minor_status Fa const gss_ctx_id_t context_handle Fa gss_qop_t qop_req Fa gss_buffer_t message_buffer Fa gss_buffer_t msg_token Fc

DESCRIPTION

Generates a cryptographic MIC for the supplied message, and places the MIC in a token for transfer to the peer application. The Fa qop_req parameter allows a choice between several cryptographic algorithms, if supported by the chosen mechanism.

Since some application-level protocols may wish to use tokens emitted by gss_wrap ();
to provide "secure framing", implementations must support derivation of MICs from zero-length messages.

The gss_sign ();
routine is an obsolete variant of gss_get_mic (.);
It is provided for backwards compatibility with applications using the GSS-API V1 interface. A distinct entrypoint (as opposed to #define) is provided, both to allow GSS-API V1 applications to link and to retain the slight parameter type differences between the obsolete versions of this routine and its current form.

PARAMETERS

minor_status: Mechanism specific status code.
context_handle: Identifies the context on which the message will be sent.
qop_req: Specifies requested quality of protection. Callers are encouraged, on portability grounds, to accept the default quality of protection offered by the chosen mechanism, which may be requested by specifying GSS_C_QOP_DEFAULT for this parameter. If an unsupported protection strength is requested, gss_get_mic ();
will return a Fa major_status of GSS_S_BAD_QOP
message_buffer: Message to be protected.
msg_token: Buffer to receive token. The application must free storage associated with this buffer after use with a call to gss_release_buffer (.);

RETURN VALUES

GSS_S_COMPLETE: Successful completion
GSS_S_CONTEXT_EXPIRED: The context has already expired
GSS_S_NO_CONTEXT: The context_handle parameter did not identify a valid context
GSS_S_BAD_QOP: The specified QOP is not supported by the mechanism

STANDARDS

RFC 2743: Generic Security Service Application Program Interface Version 2, Update 1
RFC 2744: Generic Security Service API Version 2 : C-bindings

HISTORY

The manual page example first appeared in Fx 7.0 .

AUTHORS

John Wray, Iris Associates

COPYRIGHT

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The limited permissions granted above are perpetual and will not be revoked by the Internet Society or its successors or assigns.

This document and the information contained herein is provided on an "AS IS" basis and THE INTERNET SOCIETY AND THE INTERNET ENGINEERING TASK FORCE DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.

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