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#include <gssapi/gssapi.h>
Since some application-level protocols may wish to use tokens emitted by gss_wrap(3) to provide "secure framing", implementations must support the wrapping and unwrapping of zero-length messages.
The gss_unseal() routine is an obsolete variant of gss_unwrap(). 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.
| minor_status | Mechanism specific status code. |
| context_handle | Identifies the context on which the message arrived. |
| input_message_buffer | Protected message. |
| output_message_buffer | |
| Buffer to receive unwrapped message. Storage associated with this buffer must be freed by the application after use with a call to gss_release_buffer(3). | |
| conf_state | |
| Non-zero | |
| Confidentiality and integrity protection were used. | |
| Zero | Integrity service only was used. |
Specify NULL if not required.
| qop_state | |
| Quality of protection provided. Specify NULL if not required. | |
| 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. |
| RFC 2743 | |
| Generic Security Service Application Program Interface Version 2, Update 1 | |
| RFC 2744 | |
| Generic Security Service API Version 2 : C-bindings | |
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| GSS_UNWRAP (3) | January 26, 2010 |
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