NAME

gss_verify_mic - API function

SYNOPSIS

#include <gss.h>

OM_uint32 gss_verify_mic(OM_uint32 * minor_status, const gss_ctx_id_t context_handle, const gss_buffer_t message_buffer, const gss_buffer_t token_buffer, gss_qop_t * qop_state);

ARGUMENTS

OM_uint32 * minor_status: (Integer, modify) Mechanism specific status code.
const gss_ctx_id_t context_handle: (gss_ctx_id_t, read) Identifies the context on which the message arrived.
const gss_buffer_t message_buffer: (buffer, opaque, read) Message to be verified.
const gss_buffer_t token_buffer: (buffer, opaque, read) Token associated with message.
gss_qop_t * qop_state: (gss_qop_t, modify, optional) Quality of protection gained from MIC Specify NULL if not required.

DESCRIPTION

Verifies that a cryptographic MIC, contained in the token parameter, fits the supplied message. The qop_state parameter allows a message recipient to determine the strength of protection that was applied to the message.

Since some application-level protocols may wish to use tokens emitted by gss_wrap() to provide "secure framing", implementations must support the calculation and verification of MICs over zero-length messages.

RETURN VALUE

`GSS_S_COMPLETE`: Successful completion.

`GSS_S_DEFECTIVE_TOKEN`: The token failed consistency checks.

`GSS_S_BAD_SIG`: The MIC was incorrect.

`GSS_S_DUPLICATE_TOKEN`: The token was valid, and contained a correct MIC for the message, but it had already been processed.

`GSS_S_OLD_TOKEN`: The token was valid, and contained a correct MIC for the message, but it is too old to check for duplication.

`GSS_S_UNSEQ_TOKEN`: The token was valid, and contained a correct MIC for the message, but has been verified out of sequence; a later token has already been received.

`GSS_S_GAP_TOKEN`: The token was valid, and contained a correct MIC for the message, but has been verified out of sequence; an earlier expected token has not yet been received.

`GSS_S_CONTEXT_EXPIRED`: The context has already expired.

`GSS_S_NO_CONTEXT`: The context_handle parameter did not identify a valid context.

REPORTING BUGS

Report bugs to <bug-gss@gnu.org>. GNU Generic Security Service home page: http://www.gnu.org/software/gss/ General help using GNU software: http://www.gnu.org/gethelp/

COPYRIGHT

Copyright © 2003-2013 Simon Josefsson.
Copying and distribution of this file, with or without modification, are permitted in any medium without royalty provided the copyright notice and this notice are preserved.