NAMEgss_verify_mic, gss_verify — Check a MIC against a message; verify integrity of a received message
SYNOPSIS#include < gssapi/gssapi.h>
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);
gss_verify( OM_uint32 *minor_status, gss_ctx_id_t context_handle, gss_buffer_t message_buffer, gss_buffer_t token_buffer, gss_qop_t *qop_state);
DESCRIPTIONVerifies 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.
The gss_verify() routine is an obsolete variant of gss_verify_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.
- Mechanism specific status code.
- Identifies the context on which the message arrived.
- Message to be verified.
- Token associated with message.
- Quality of protection gained from MIC. Specify NULL if not required.
- Successful completion
- The token failed consistency checks
- The MIC was incorrect
- The token was valid, and contained a correct MIC for the message, but it had already been processed
- The token was valid, and contained a correct MIC for the message, but it is too old to check for duplication
- 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.
- 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
- The context has already expired
- The context_handle parameter did not identify a valid context
- RFC 2743
- Generic Security Service Application Program Interface Version 2, Update 1
- RFC 2744
- Generic Security Service API Version 2 : C-bindings
HISTORYThe gss_verify_mic function first appeared in FreeBSD 7.0.
AUTHORSJohn Wray, Iris Associates
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|January 26, 2010||FreeBSD|