/* Copyright 2019 Google LLC. All rights reserved. This file and proprietary */
/* source code may only be used and distributed under the Widevine Master */
/* License Agreement. */

#ifndef WIDEVINE_ODK_SRC_ODK_UTIL_H_
#define WIDEVINE_ODK_SRC_ODK_UTIL_H_

#include <stddef.h>
#include <stdint.h>

#include "odk_structs.h"

#ifdef __cplusplus
extern "C" {
#endif

/* crypto_memcmp returns zero iff the |len| bytes at |a| and |b| are equal. It
 * takes an amount of time dependent on |len|, but independent of the contents
 * of |a| and |b|. Unlike memcmp, it cannot be used to order elements as the
 * return value when a != b is undefined, other than being non-zero.  */
int crypto_memcmp(const void* a, const void* b, size_t len);

bool ODK_NonceValuesEqual(const ODK_NonceValues* a, const ODK_NonceValues* b);

#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /* WIDEVINE_ODK_SRC_ODK_UTIL_H_ */