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gss_unwrap(3gss) [opensolaris man page]

gss_unwrap(3GSS)				  Generic Security Services API Library Functions				  gss_unwrap(3GSS)

NAME
gss_unwrap - verify a message with attached cryptographic message SYNOPSIS
cc [ flag... ] file... -lgss [ library... ] #include <gssapi/gssapi.h> OM_uint32 gss_unwrap(OM_uint32 *minor_status, const gss_ctx_id_t context_handle, const gss_buffer_t input_message_buffer, gss_buffer_t output_message_buffer, int *conf_state, gss_qop_t *qop_state); DESCRIPTION
The gss_unwrap() function converts a message previously protected by gss_wrap(3GSS) back to a usable form, verifying the embedded MIC. The conf_state parameter indicates whether the message was encrypted; the qop_state parameter indicates the strength of protection that was used to provide the confidentiality and integrity services. Since some application-level protocols may wish to use tokens emitted by gss_wrap(3GSS) to provide secure framing, the GSS-API supports the wrapping and unwrapping of zero-length messages. PARAMETERS
The parameter descriptions for gss_unwrap() follow: minor_status The status code returned by the underlying mechanism. context_handle Identifies the context on which the message arrived. input_message_buffer The message to be protected. output_message_buffer The buffer to receive the unwrapped message. Storage associated with this buffer must be freed by the application after use with a call to gss_release_buffer(3GSS). conf_state If the value of conf_state is non-zero, then confidentiality and integrity protection were used. If the value is zero, only integrity service was used. Specify NULL if this parameter is not required. qop_state Specifies the quality of protection provided. Specify NULL if this parameter is not required. ERRORS
gss_unwrap() may return the following status codes: 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 ear- lier 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. GSS_S_FAILURE The underlying mechanism detected an error for which no specific GSS status code is defined. The mechanism-spe- cific status code reported by means of the minor_status parameter details the error condition. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWgss (32-bit) | +-----------------------------+-----------------------------+ | |SUNWgssx (64-bit) | +-----------------------------+-----------------------------+ |MT-Level |Safe | +-----------------------------+-----------------------------+ SEE ALSO
gss_release_buffer(3GSS), gss_wrap(3GSS), attributes(5) Solaris Security for Developers Guide SunOS 5.11 15 Jan 2003 gss_unwrap(3GSS)

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gss_get_mic(3GSS)				  Generic Security Services API Library Functions				 gss_get_mic(3GSS)

NAME
gss_get_mic - calculate a cryptographic message SYNOPSIS
cc -flag ... file ...-lgss [library ...] #include <gssapi/gssapi.h> OM_uint32 gss_get_mic(OM_uint32 *minor_status, const gss_ctx_id_t context_handle, gss_qop_t qop_req, const gss_buffer_t message_buffer, gss_buffer_t msg_token); DESCRIPTION
The gss_get_mic() function generates a cryptographic MIC for the supplied message, and places the MIC in a token for transfer to the peer application. The 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(3GSS) to provide secure framing, the GSS-API allows MICs to be derived from zero-length messages. PARAMETERS
The parameter descriptions for gss_get_mic() follow: minor_status The status code returned by the underlying mechanism. context_handle Identifies the context on which the message will be sent. qop_req Specifies the 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 major_status of GSS_S_BAD_QOP. message_buffer The message to be protected. msg_token The buffer to receive the token. Storage associated with this message must be freed by the application after use with a call to gss_release_buffer(3GSS). ERRORS
gss_get_mic() may return the following status codes: 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. GSS_S_FAILURE The underlying mechanism detected an error for which no specific GSS status code is defined. The mecha- nism-specific status code reported by means of the minor_status parameter details the error condition. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWgss (32-bit) | +-----------------------------+-----------------------------+ | |SUNWgssx (64-bit) | +-----------------------------+-----------------------------+ |MT-Level |Safe | +-----------------------------+-----------------------------+ SEE ALSO
gss_release_buffer(3GSS), gss_wrap(3GSS), attributes(5) Solaris Security for Developers Guide SunOS 5.10 14 Jan 2003 gss_get_mic(3GSS)
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