1 /*
2 * Copyright (C) 2022 - This file is part of libecc project
3 *
4 * Authors:
5 * Ryad BENADJILA <ryadbenadjila@gmail.com>
6 * Arnaud EBALARD <arnaud.ebalard@ssi.gouv.fr>
7 *
8 * This software is licensed under a dual BSD and GPL v2 license.
9 * See LICENSE file at the root folder of the project.
10 */
11 #include <libecc/lib_ecc_config.h>
12 #ifdef WITH_HASH_BASH384
13
14 #include <libecc/hash/bash384.h>
15
16 /* Init hash function. Returns 0 on success, -1 on error. */
bash384_init(bash384_context * ctx)17 int bash384_init(bash384_context *ctx)
18 {
19 int ret;
20
21 ret = _bash_init(ctx, BASH384_DIGEST_SIZE); EG(ret, err);
22
23 /* Tell that we are initialized */
24 ctx->magic = BASH384_HASH_MAGIC;
25
26 err:
27 return ret;
28 }
29
30 /* Update hash function. Returns 0 on success, -1 on error. */
bash384_update(bash384_context * ctx,const u8 * input,u32 ilen)31 int bash384_update(bash384_context *ctx, const u8 *input, u32 ilen)
32 {
33 int ret;
34
35 BASH384_HASH_CHECK_INITIALIZED(ctx, ret, err);
36
37 ret = _bash_update((bash_context *)ctx, input, ilen);
38
39 err:
40 return ret;
41 }
42
43 /* Finalize hash function. Returns 0 on success, -1 on error. */
bash384_final(bash384_context * ctx,u8 output[BASH384_DIGEST_SIZE])44 int bash384_final(bash384_context *ctx, u8 output[BASH384_DIGEST_SIZE])
45 {
46 int ret;
47
48 BASH384_HASH_CHECK_INITIALIZED(ctx, ret, err);
49
50 ret = _bash_finalize((bash_context *)ctx, output); EG(ret, err);
51
52 /* Tell that we are uninitialized */
53 ctx->magic = WORD(0);
54 ret = 0;
55
56 err:
57 return ret;
58 }
59
60 /*
61 * Scattered version performing init/update/finalize on a vector of buffers
62 * 'inputs' with the length of each buffer passed via 'ilens'. The function
63 * loops on pointers in 'inputs' until it finds a NULL pointer. The function
64 * returns 0 on success, -1 on error.
65 */
bash384_scattered(const u8 ** inputs,const u32 * ilens,u8 output[BASH384_DIGEST_SIZE])66 int bash384_scattered(const u8 **inputs, const u32 *ilens,
67 u8 output[BASH384_DIGEST_SIZE])
68 {
69 bash384_context ctx;
70 int ret, pos = 0;
71
72 MUST_HAVE((inputs != NULL) && (ilens != NULL) && (output != NULL), ret, err);
73
74 ret = bash384_init(&ctx); EG(ret, err);
75
76 while (inputs[pos] != NULL) {
77 const u8 *buf = inputs[pos];
78 u32 buflen = ilens[pos];
79
80 ret = bash384_update(&ctx, buf, buflen); EG(ret, err);
81
82 pos += 1;
83 }
84
85 ret = bash384_final(&ctx, output);
86
87 err:
88 return ret;
89 }
90
91 /*
92 * Single call version performing init/update/final on given input.
93 * Returns 0 on success, -1 on error.
94 */
bash384(const u8 * input,u32 ilen,u8 output[BASH384_DIGEST_SIZE])95 int bash384(const u8 *input, u32 ilen, u8 output[BASH384_DIGEST_SIZE])
96 {
97 bash384_context ctx;
98 int ret;
99
100 ret = bash384_init(&ctx); EG(ret, err);
101 ret = bash384_update(&ctx, input, ilen); EG(ret, err);
102 ret = bash384_final(&ctx, output);
103
104 err:
105 return ret;
106 }
107
108 #else /* WITH_HASH_BASH384 */
109
110 /*
111 * Dummy definition to avoid the empty translation unit ISO C warning
112 */
113 typedef int dummy;
114 #endif /* WITH_HASH_BASH384 */
115