libkeccak_hmac_free3
Destroys and deallocates an hmac-hashing state with erasure
Usage
#include <libkeccak.h> void libkeccak_hmac_free(struct libkeccak_hmac_state *state);
Link with -lkeccak.
Overview
The libkeccak_hmac_free() function releases the allocations stored in *state, and also release the allocation of state.
The libkeccak_hmac_free() function securely erases sensitive data.
Return values
The libkeccak_hmac_free() function does not return any value.
Errors
The libkeccak_hmac_free() function cannot fail.
Notes
A double call to libkeccak_hmac_free() will either result in a double free, which is must likely to crash the process, or free an allocation (that was created between the calls) that was not intended to be freed, resulting in undefined behaviour.