2 * Copyright 2018-2020 The OpenSSL Project Authors. All Rights Reserved.
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
11 #include <openssl/core_dispatch.h>
12 #include <openssl/core_names.h>
13 #include <openssl/params.h>
14 #include <openssl/evp.h>
15 #include <openssl/err.h>
17 #include "crypto/siphash.h"
19 * TODO(3.0) when siphash has moved entirely to our providers, this
20 * header should be moved to the provider include directory. For the
21 * moment, crypto/siphash/siphash_ameth.c has us stuck.
23 #include "../../../crypto/siphash/siphash_local.h"
25 #include "prov/providercommonerr.h"
26 #include "prov/implementations.h"
29 * Forward declaration of everything implemented here. This is not strictly
30 * necessary for the compiler, but provides an assurance that the signatures
31 * of the functions in the dispatch table are correct.
33 static OSSL_FUNC_mac_newctx_fn siphash_new
;
34 static OSSL_FUNC_mac_dupctx_fn siphash_dup
;
35 static OSSL_FUNC_mac_freectx_fn siphash_free
;
36 static OSSL_FUNC_mac_gettable_ctx_params_fn siphash_gettable_ctx_params
;
37 static OSSL_FUNC_mac_get_ctx_params_fn siphash_get_ctx_params
;
38 static OSSL_FUNC_mac_settable_ctx_params_fn siphash_settable_params
;
39 static OSSL_FUNC_mac_set_ctx_params_fn siphash_set_params
;
40 static OSSL_FUNC_mac_size_fn siphash_size
;
41 static OSSL_FUNC_mac_init_fn siphash_init
;
42 static OSSL_FUNC_mac_update_fn siphash_update
;
43 static OSSL_FUNC_mac_final_fn siphash_final
;
45 struct siphash_data_st
{
47 SIPHASH siphash
; /* Siphash data */
50 static void *siphash_new(void *provctx
)
52 struct siphash_data_st
*ctx
= OPENSSL_zalloc(sizeof(*ctx
));
55 ctx
->provctx
= provctx
;
59 static void siphash_free(void *vmacctx
)
61 OPENSSL_free(vmacctx
);
64 static void *siphash_dup(void *vsrc
)
66 struct siphash_data_st
*ssrc
= vsrc
;
67 struct siphash_data_st
*sdst
= siphash_new(ssrc
->provctx
);
72 sdst
->siphash
= ssrc
->siphash
;
76 static size_t siphash_size(void *vmacctx
)
78 struct siphash_data_st
*ctx
= vmacctx
;
80 return SipHash_hash_size(&ctx
->siphash
);
83 static int siphash_init(void *vmacctx
)
85 /* Not much to do here, actual initialization happens through controls */
89 static int siphash_update(void *vmacctx
, const unsigned char *data
,
92 struct siphash_data_st
*ctx
= vmacctx
;
97 SipHash_Update(&ctx
->siphash
, data
, datalen
);
101 static int siphash_final(void *vmacctx
, unsigned char *out
, size_t *outl
,
104 struct siphash_data_st
*ctx
= vmacctx
;
105 size_t hlen
= siphash_size(ctx
);
111 return SipHash_Final(&ctx
->siphash
, out
, hlen
);
114 static const OSSL_PARAM known_gettable_ctx_params
[] = {
115 OSSL_PARAM_size_t(OSSL_MAC_PARAM_SIZE
, NULL
),
118 static const OSSL_PARAM
*siphash_gettable_ctx_params(ossl_unused
void *provctx
)
120 return known_gettable_ctx_params
;
123 static int siphash_get_ctx_params(void *vmacctx
, OSSL_PARAM params
[])
127 if ((p
= OSSL_PARAM_locate(params
, OSSL_MAC_PARAM_SIZE
)) != NULL
)
128 return OSSL_PARAM_set_size_t(p
, siphash_size(vmacctx
));
133 static const OSSL_PARAM known_settable_ctx_params
[] = {
134 OSSL_PARAM_size_t(OSSL_MAC_PARAM_SIZE
, NULL
),
135 OSSL_PARAM_octet_string(OSSL_MAC_PARAM_KEY
, NULL
, 0),
138 static const OSSL_PARAM
*siphash_settable_params(void *provctx
)
140 return known_settable_ctx_params
;
143 static int siphash_set_params(void *vmacctx
, const OSSL_PARAM
*params
)
145 struct siphash_data_st
*ctx
= vmacctx
;
146 const OSSL_PARAM
*p
= NULL
;
148 if ((p
= OSSL_PARAM_locate_const(params
, OSSL_MAC_PARAM_SIZE
)) != NULL
) {
151 if (!OSSL_PARAM_get_size_t(p
, &size
)
152 || !SipHash_set_hash_size(&ctx
->siphash
, size
))
155 if ((p
= OSSL_PARAM_locate_const(params
, OSSL_MAC_PARAM_KEY
)) != NULL
)
156 if (p
->data_type
!= OSSL_PARAM_OCTET_STRING
157 || p
->data_size
!= SIPHASH_KEY_SIZE
158 || !SipHash_Init(&ctx
->siphash
, p
->data
, 0, 0))
163 const OSSL_DISPATCH siphash_functions
[] = {
164 { OSSL_FUNC_MAC_NEWCTX
, (void (*)(void))siphash_new
},
165 { OSSL_FUNC_MAC_DUPCTX
, (void (*)(void))siphash_dup
},
166 { OSSL_FUNC_MAC_FREECTX
, (void (*)(void))siphash_free
},
167 { OSSL_FUNC_MAC_INIT
, (void (*)(void))siphash_init
},
168 { OSSL_FUNC_MAC_UPDATE
, (void (*)(void))siphash_update
},
169 { OSSL_FUNC_MAC_FINAL
, (void (*)(void))siphash_final
},
170 { OSSL_FUNC_MAC_GETTABLE_CTX_PARAMS
,
171 (void (*)(void))siphash_gettable_ctx_params
},
172 { OSSL_FUNC_MAC_GET_CTX_PARAMS
, (void (*)(void))siphash_get_ctx_params
},
173 { OSSL_FUNC_MAC_SETTABLE_CTX_PARAMS
,
174 (void (*)(void))siphash_settable_params
},
175 { OSSL_FUNC_MAC_SET_CTX_PARAMS
, (void (*)(void))siphash_set_params
},