libkeccak_hmac_copy3
Copies an hmac-hashing state
Usage
#include <libkeccak.h> int libkeccak_hmac_copy(struct libkeccak_hmac_state *dest, const struct libkeccak_hmac_state *src);
Link with -lkeccak.
Overview
The libkeccak_hmac_copy() function initialises *dest 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_copy() function returns 0 upon successful completion. On error, -1 is returned and errno is set to describe the error.
Errors
The libkeccak_hmac_copy() function may fail for any specified for the function malloc(3).