libkeccak_hmac_duplicate3
Allocate a duplicate an hmac-hashing state
Usage
#include <libkeccak.h> struct libkeccak_hmac_state *libkeccak_hmac_duplicate(const struct libkeccak_hmac_state *src);
Link with -lkeccak.
Overview
The libkeccak_hmac_duplicate() function allocates a new hash state and initialises it to be identical to *src. This includes all members of the struct libkeccak_hmac_state structure, including the state of the sponge and the message chunk buffer.
Return values
The libkeccak_hmac_duplicate() function returns a newly allocated libkeccak_hmac_t* (of one initialised element) upon successful completion. On error, NULL is returned and errno is set to describe the error.
Errors
The libkeccak_hmac_duplicate() function may fail for any specified for the function malloc(3).