1 | /* Copyright (c) (2017-2019,2022) Apple Inc. All rights reserved. |
2 | * |
3 | * corecrypto is licensed under Apple Inc.’s Internal Use License Agreement (which |
4 | * is contained in the License.txt file distributed with corecrypto) and only to |
5 | * people who accept that license. IMPORTANT: Any license rights granted to you by |
6 | * Apple Inc. (if any) are limited to internal use within your organization only on |
7 | * devices and computers you own or control, for the sole purpose of verifying the |
8 | * security characteristics and correct functioning of the Apple Software. You may |
9 | * not, directly or indirectly, redistribute the Apple Software or any portions thereof. |
10 | */ |
11 | |
12 | #ifndef _CORECRYPTO_CCDRBG_INTERNAL_H_ |
13 | #define _CORECRYPTO_CCDRBG_INTERNAL_H_ |
14 | |
15 | #include <corecrypto/cc.h> |
16 | #include <corecrypto/ccdrbg_impl.h> |
17 | #include <corecrypto/ccdrbg.h> |
18 | #include <corecrypto/ccaes.h> |
19 | |
20 | #define DRBG_CTR_KEYLEN(drbg) ((drbg)->custom.keylen) |
21 | #define DRBG_CTR_CTRLEN (8) |
22 | #define DRBG_CTR_BLOCKLEN(drbg) (CCAES_BLOCK_SIZE) |
23 | #define DRBG_CTR_SEEDLEN(drbg) (DRBG_CTR_KEYLEN(drbg) + DRBG_CTR_BLOCKLEN(drbg)) |
24 | |
25 | #define DRBG_CTR_MAX_KEYLEN (CCAES_KEY_SIZE_256) |
26 | #define DRBG_CTR_MAX_BLOCKLEN (CCAES_BLOCK_SIZE) |
27 | #define DRBG_CTR_MAX_SEEDLEN (DRBG_CTR_MAX_KEYLEN + DRBG_CTR_MAX_BLOCKLEN) |
28 | |
29 | struct ccdrbg_nistctr_state { |
30 | uint8_t Key[DRBG_CTR_MAX_KEYLEN]; |
31 | uint8_t V[DRBG_CTR_MAX_BLOCKLEN]; |
32 | uint64_t reseed_counter; // Fits max NIST requirement of 2^48. |
33 | struct ccdrbg_nistctr_custom custom; |
34 | }; |
35 | |
36 | /* |
37 | * NIST SP 800-90 TRNG DRBG |
38 | * |
39 | * Call into the SEP DRBG and perform a SP 800-90 test operation. |
40 | */ |
41 | void ccdrbg_factory_trng(struct ccdrbg_info *info); |
42 | |
43 | /* Required length of the various TRNG entropy and personalization inputs. */ |
44 | #define CCDRBG_TRNG_VECTOR_LEN 48 |
45 | |
46 | #endif /* _CORECRYPTO_CCDRBG_INTERNAL_H_ */ |
47 | |