/* Copyright (c) (2017-2019,2022) Apple Inc. All rights reserved.
*
* corecrypto is licensed under Apple Inc.’s Internal Use License Agreement (which
* is contained in the License.txt file distributed with corecrypto) and only to
* people who accept that license. IMPORTANT: Any license rights granted to you by
* Apple Inc. (if any) are limited to internal use within your organization only on
* devices and computers you own or control, for the sole purpose of verifying the
* security characteristics and correct functioning of the Apple Software. You may
* not, directly or indirectly, redistribute the Apple Software or any portions thereof.
*/
#ifndef _CORECRYPTO_CCDRBG_INTERNAL_H_
#define _CORECRYPTO_CCDRBG_INTERNAL_H_
#include <corecrypto/cc.h>
#include <corecrypto/ccdrbg_impl.h>
#include <corecrypto/ccdrbg.h>
#include <corecrypto/ccaes.h>
#define DRBG_CTR_KEYLEN(drbg) ((drbg)->custom.keylen)
#define DRBG_CTR_CTRLEN (8)
#define DRBG_CTR_BLOCKLEN(drbg) (CCAES_BLOCK_SIZE)
#define DRBG_CTR_SEEDLEN(drbg) (DRBG_CTR_KEYLEN(drbg) + DRBG_CTR_BLOCKLEN(drbg))
#define DRBG_CTR_MAX_KEYLEN (CCAES_KEY_SIZE_256)
#define DRBG_CTR_MAX_BLOCKLEN (CCAES_BLOCK_SIZE)
#define DRBG_CTR_MAX_SEEDLEN (DRBG_CTR_MAX_KEYLEN + DRBG_CTR_MAX_BLOCKLEN)
struct ccdrbg_nistctr_state {
uint8_t Key[DRBG_CTR_MAX_KEYLEN];
uint8_t V[DRBG_CTR_MAX_BLOCKLEN];
uint64_t reseed_counter; // Fits max NIST requirement of 2^48.
struct ccdrbg_nistctr_custom custom;
};
/*
* NIST SP 800-90 TRNG DRBG
*
* Call into the SEP DRBG and perform a SP 800-90 test operation.
*/
void ccdrbg_factory_trng(struct ccdrbg_info *info);
/* Required length of the various TRNG entropy and personalization inputs. */
#define CCDRBG_TRNG_VECTOR_LEN 48
#endif /* _CORECRYPTO_CCDRBG_INTERNAL_H_ */