libwebsockets
Lightweight C library for HTML5 websockets
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lws-genhash.h
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1/*
2 * libwebsockets - small server side websockets and web server implementation
3 *
4 * Copyright (C) 2010 - 2019 Andy Green <andy@warmcat.com>
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to
8 * deal in the Software without restriction, including without limitation the
9 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
10 * sell copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
22 * IN THE SOFTWARE.
23 */
24
35
36#if defined(LWS_WITH_AWSLC) || defined(LWS_WITH_BORINGSSL)
37#include <openssl/hmac.h>
38#endif
39
40
49
56
57#define LWS_GENHASH_LARGEST 64
58
59#if defined(LWS_WITH_TLS) && defined(LWS_WITH_GENCRYPTO)
60
61struct lws_genhash_ctx {
62 uint8_t type;
63#if defined(LWS_WITH_MBEDTLS)
64 union {
65 mbedtls_md5_context md5;
66 mbedtls_sha1_context sha1;
67 mbedtls_sha256_context sha256;
68 mbedtls_sha512_context sha512; /* 384 also uses this */
69 const mbedtls_md_info_t *hmac;
70 } u;
71#else
72 const EVP_MD *evp_type;
73 EVP_MD_CTX *mdctx;
74#endif
75};
76
77struct lws_genhmac_ctx {
78 uint8_t type;
79#if defined(LWS_WITH_MBEDTLS)
80 const mbedtls_md_info_t *hmac;
81 mbedtls_md_context_t ctx;
82#else
83 const EVP_MD *evp_type;
84
85#if !defined(LWS_WITH_BORINGSSL) &&\
86 defined(LWS_HAVE_EVP_PKEY_new_raw_private_key)
87 EVP_MD_CTX *ctx;
88 EVP_PKEY *key;
89#else
90#if defined(LWS_HAVE_HMAC_CTX_new)
91 HMAC_CTX *ctx;
92#else
93 HMAC_CTX ctx;
94#endif
95#endif
96
97#endif
98};
99
108lws_genhash_size(enum lws_genhash_types type);
109
118lws_genhmac_size(enum lws_genhmac_types type);
119
128lws_genhash_init(struct lws_genhash_ctx *ctx, enum lws_genhash_types type);
129
139lws_genhash_update(struct lws_genhash_ctx *ctx, const void *in, size_t len);
140
153lws_genhash_destroy(struct lws_genhash_ctx *ctx, void *result);
154
168lws_genhmac_init(struct lws_genhmac_ctx *ctx, enum lws_genhmac_types type,
169 const uint8_t *key, size_t key_len);
170
182lws_genhmac_update(struct lws_genhmac_ctx *ctx, const void *in, size_t len);
183
196lws_genhmac_destroy(struct lws_genhmac_ctx *ctx, void *result);
197
198#endif
lws_genhash_types
Definition lws-genhash.h:41
lws_genhmac_types
Definition lws-genhash.h:50
@ LWS_GENHASH_TYPE_SHA384
Definition lws-genhash.h:46
@ LWS_GENHASH_TYPE_UNKNOWN
Definition lws-genhash.h:42
@ LWS_GENHASH_TYPE_MD5
Definition lws-genhash.h:43
@ LWS_GENHASH_TYPE_SHA1
Definition lws-genhash.h:44
@ LWS_GENHASH_TYPE_SHA512
Definition lws-genhash.h:47
@ LWS_GENHASH_TYPE_SHA256
Definition lws-genhash.h:45
@ LWS_GENHMAC_TYPE_SHA384
Definition lws-genhash.h:53
@ LWS_GENHMAC_TYPE_SHA512
Definition lws-genhash.h:54
@ LWS_GENHMAC_TYPE_UNKNOWN
Definition lws-genhash.h:51
@ LWS_GENHMAC_TYPE_SHA256
Definition lws-genhash.h:52
#define LWS_EXTERN
unsigned char uint8_t
#define LWS_WARN_UNUSED_RESULT
#define LWS_VISIBLE