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d5e5e2ff | 1 | /* |
a28d06f3 | 2 | * Copyright 2019-2021 The OpenSSL Project Authors. All Rights Reserved. |
d5e5e2ff SL |
3 | * |
4 | * Licensed under the Apache License 2.0 (the "License"). You may not use | |
5 | * this file except in compliance with the License. You can obtain a copy | |
6 | * in the file LICENSE in the source distribution or at | |
7 | * https://www.openssl.org/source/license.html | |
8 | */ | |
9 | ||
10 | /* TODO(3.0) Move this header into provider when dependencies are removed */ | |
ae4186b0 DMSP |
11 | #ifndef OSSL_INTERNAL_SHA3_H |
12 | # define OSSL_INTERNAL_SHA3_H | |
3a111aad | 13 | # pragma once |
d5e5e2ff SL |
14 | |
15 | # include <openssl/e_os2.h> | |
16 | # include <stddef.h> | |
17 | ||
18 | # define KECCAK1600_WIDTH 1600 | |
19 | # define SHA3_MDSIZE(bitlen) (bitlen / 8) | |
20 | # define KMAC_MDSIZE(bitlen) 2 * (bitlen / 8) | |
21 | # define SHA3_BLOCKSIZE(bitlen) (KECCAK1600_WIDTH - bitlen * 2) / 8 | |
22 | ||
23 | typedef struct keccak_st KECCAK1600_CTX; | |
24 | ||
25 | typedef size_t (sha3_absorb_fn)(void *vctx, const void *inp, size_t len); | |
26 | typedef int (sha3_final_fn)(unsigned char *md, void *vctx); | |
27 | ||
28 | typedef struct prov_sha3_meth_st | |
29 | { | |
30 | sha3_absorb_fn *absorb; | |
31 | sha3_final_fn *final; | |
32 | } PROV_SHA3_METHOD; | |
33 | ||
34 | struct keccak_st { | |
35 | uint64_t A[5][5]; | |
36 | size_t block_size; /* cached ctx->digest->block_size */ | |
37 | size_t md_size; /* output length, variable in XOF */ | |
38 | size_t bufsz; /* used bytes in below buffer */ | |
39 | unsigned char buf[KECCAK1600_WIDTH / 8 - 32]; | |
40 | unsigned char pad; | |
41 | PROV_SHA3_METHOD meth; | |
42 | }; | |
43 | ||
b68a947f P |
44 | void ossl_sha3_reset(KECCAK1600_CTX *ctx); |
45 | int ossl_sha3_init(KECCAK1600_CTX *ctx, unsigned char pad, size_t bitlen); | |
46 | int ossl_keccak_kmac_init(KECCAK1600_CTX *ctx, unsigned char pad, | |
47 | size_t bitlen); | |
48 | int ossl_sha3_update(KECCAK1600_CTX *ctx, const void *_inp, size_t len); | |
49 | int ossl_sha3_final(unsigned char *md, KECCAK1600_CTX *ctx); | |
d5e5e2ff SL |
50 | |
51 | size_t SHA3_absorb(uint64_t A[5][5], const unsigned char *inp, size_t len, | |
52 | size_t r); | |
53 | ||
ae4186b0 | 54 | #endif /* OSSL_INTERNAL_SHA3_H */ |