1KCAPI_PBKDF_ITERATIO(3)      Programming Interface     KCAPI_PBKDF_ITERATIO(3)
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NAME

6       kcapi_pbkdf_iteration_count - Calculate numbers of iterations for a
7       PBKDF
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SYNOPSIS

10       uint32_t kcapi_pbkdf_iteration_count(const char * hashname,
11                                            uint64_t timeshresh);
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ARGUMENTS

14       hashname
15           [in] kernel crypto API name of a keyed hash (e.g. hmac(sha1))
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17       timeshresh
18           [in] Time duration in nanoseconds that the PBKDF operation shall at
19           least require. If that value is 0, a default of (1<<27) nanoseconds
20           is used.
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DESCRIPTION

23       The function measures the time the PBKDF operation takes for different
24       round counts for the given keyed message digest type.
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26       The result should be taken as the iteration count for a PBKDF
27       operation.
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29       If an error occurs with the PBKDF calculation, a value of 1<<18 is
30       returned.
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32       return number of iterations a PBKDF should take on this computer.
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AUTHOR

35       Stephan Mueller <smueller@chronox.de>
36           Author.
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39libkcapi Manual 1.3.1              July 2021           KCAPI_PBKDF_ITERATIO(3)
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