1 /*
2 * Copyright (C) 2017 - 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 * Jean-Pierre FLORI <jean-pierre.flori@ssi.gouv.fr>
8 *
9 * Contributors:
10 * Nicolas VIVET <nicolas.vivet@ssi.gouv.fr>
11 * Karim KHALFALLAH <karim.khalfallah@ssi.gouv.fr>
12 *
13 * This software is licensed under a dual BSD and GPL v2 license.
14 * See LICENSE file at the root folder of the project.
15 */
16 #include <libecc/lib_ecc_config.h>
17 #ifdef WITH_HASH_SHA3_224
18
19 #include <libecc/hash/sha3-224.h>
20
21 /* Init hash function. Returns 0 on success, -1 on error. */
sha3_224_init(sha3_224_context * ctx)22 int sha3_224_init(sha3_224_context *ctx)
23 {
24 int ret;
25
26 ret = _sha3_init(ctx, SHA3_224_DIGEST_SIZE); EG(ret, err);
27
28 /* Tell that we are initialized */
29 ctx->magic = SHA3_224_HASH_MAGIC;
30
31 err:
32 return ret;
33 }
34
35 /* Update hash function. Returns 0 on success, -1 on error. */
sha3_224_update(sha3_224_context * ctx,const u8 * input,u32 ilen)36 int sha3_224_update(sha3_224_context *ctx, const u8 *input, u32 ilen)
37 {
38 int ret;
39
40 SHA3_224_HASH_CHECK_INITIALIZED(ctx, ret, err);
41
42 ret = _sha3_update((sha3_context *)ctx, input, ilen);
43
44 err:
45 return ret;
46 }
47
48 /* Finalize hash function. Returns 0 on success, -1 on error. */
sha3_224_final(sha3_224_context * ctx,u8 output[SHA3_224_DIGEST_SIZE])49 int sha3_224_final(sha3_224_context *ctx, u8 output[SHA3_224_DIGEST_SIZE])
50 {
51 int ret;
52
53 SHA3_224_HASH_CHECK_INITIALIZED(ctx, ret, err);
54
55 ret = _sha3_finalize((sha3_context *)ctx, output); EG(ret, err);
56
57 /* Tell that we are uninitialized */
58 ctx->magic = WORD(0);
59 ret = 0;
60
61 err:
62 return ret;
63 }
64
65 /*
66 * Scattered version performing init/update/finalize on a vector of buffers
67 * 'inputs' with the length of each buffer passed via 'ilens'. The function
68 * loops on pointers in 'inputs' until it finds a NULL pointer. The function
69 * returns 0 on success, -1 on error.
70 */
sha3_224_scattered(const u8 ** inputs,const u32 * ilens,u8 output[SHA3_224_DIGEST_SIZE])71 int sha3_224_scattered(const u8 **inputs, const u32 *ilens,
72 u8 output[SHA3_224_DIGEST_SIZE])
73 {
74 sha3_224_context ctx;
75 int ret, pos = 0;
76
77 MUST_HAVE((inputs != NULL) && (ilens != NULL) && (output != NULL), ret, err);
78
79 ret = sha3_224_init(&ctx); EG(ret, err);
80
81 while (inputs[pos] != NULL) {
82 ret = sha3_224_update(&ctx, inputs[pos], ilens[pos]); EG(ret, err);
83 pos += 1;
84 }
85
86 ret = sha3_224_final(&ctx, output);
87
88 err:
89 return ret;
90 }
91
92 /*
93 * Single call version performing init/update/final on given input.
94 * Returns 0 on success, -1 on error.
95 */
sha3_224(const u8 * input,u32 ilen,u8 output[SHA3_224_DIGEST_SIZE])96 int sha3_224(const u8 *input, u32 ilen, u8 output[SHA3_224_DIGEST_SIZE])
97 {
98 sha3_224_context ctx;
99 int ret;
100
101 ret = sha3_224_init(&ctx); EG(ret, err);
102 ret = sha3_224_update(&ctx, input, ilen); EG(ret, err);
103 ret = sha3_224_final(&ctx, output);
104
105 err:
106 return ret;
107 }
108
109 #else /* WITH_HASH_SHA3_224 */
110
111 /*
112 * Dummy definition to avoid the empty translation unit ISO C warning
113 */
114 typedef int dummy;
115 #endif /* WITH_HASH_SHA3_224 */
116