gss_wrap_size_limit(3) | gss | gss_wrap_size_limit(3) |
gss_wrap_size_limit - API function
#include <gss.h>
OM_uint32 gss_wrap_size_limit(OM_uint32 * minor_status, const gss_ctx_id_t context_handle, int conf_req_flag, gss_qop_t qop_req, OM_uint32 req_output_size, OM_uint32 * max_input_size);
Allows an application to determine the maximum message size that, if presented to gss_wrap with the same conf_req_flag and qop_req parameters, will result in an output token containing no more than req_output_size bytes.
This call is intended for use by applications that communicate over protocols that impose a maximum message size. It enables the application to fragment messages prior to applying protection.
GSS-API implementations are recommended but not required to detect invalid QOP values when gss_wrap_size_limit() is called. This routine guarantees only a maximum message size, not the availability of specific QOP values for message protection.
Successful completion of this call does not guarantee that gss_wrap will be able to protect a message of length max_input_size bytes, since this ability may depend on the availability of system resources at the time that gss_wrap is called. However, if the implementation itself imposes an upper limit on the length of messages that may be processed by gss_wrap, the implementation should not return a value via max_input_bytes that is greater than this length.
`GSS_S_COMPLETE`: Successful completion.
`GSS_S_NO_CONTEXT`: The referenced context could not be accessed.
`GSS_S_CONTEXT_EXPIRED`: The context has expired.
`GSS_S_BAD_QOP`: The specified QOP is not supported by the mechanism.
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 © 2003-2022 Simon Josefsson.
Copying and distribution of this file, with or without modification, are
permitted in any medium without royalty provided the copyright notice and
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1.0.4 | gss |