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
10 #include <openssl/core_dispatch.h>
11 #include <openssl/core_names.h>
12 #include <openssl/params.h>
13 #include <openssl/evp.h>
14 #include <openssl/err.h>
16 #include "crypto/poly1305.h"
18 #include "prov/providercommonerr.h"
19 #include "prov/implementations.h"
20 #include "prov/providercommon.h"
23 * Forward declaration of everything implemented here. This is not strictly
24 * necessary for the compiler, but provides an assurance that the signatures
25 * of the functions in the dispatch table are correct.
27 static OSSL_FUNC_mac_newctx_fn poly1305_new;
28 static OSSL_FUNC_mac_dupctx_fn poly1305_dup;
29 static OSSL_FUNC_mac_freectx_fn poly1305_free;
30 static OSSL_FUNC_mac_gettable_params_fn poly1305_gettable_params;
31 static OSSL_FUNC_mac_get_params_fn poly1305_get_params;
32 static OSSL_FUNC_mac_settable_ctx_params_fn poly1305_settable_ctx_params;
33 static OSSL_FUNC_mac_set_ctx_params_fn poly1305_set_ctx_params;
34 static OSSL_FUNC_mac_init_fn poly1305_init;
35 static OSSL_FUNC_mac_update_fn poly1305_update;
36 static OSSL_FUNC_mac_final_fn poly1305_final;
38 struct poly1305_data_st {
40 POLY1305 poly1305; /* Poly1305 data */
43 static size_t poly1305_size(void);
45 static void *poly1305_new(void *provctx)
47 struct poly1305_data_st *ctx;
49 if (!ossl_prov_is_running())
51 ctx = OPENSSL_zalloc(sizeof(*ctx));
53 ctx->provctx = provctx;
57 static void poly1305_free(void *vmacctx)
59 OPENSSL_free(vmacctx);
62 static void *poly1305_dup(void *vsrc)
64 struct poly1305_data_st *src = vsrc;
65 struct poly1305_data_st *dst;
67 if (!ossl_prov_is_running())
69 dst = poly1305_new(src->provctx);
73 dst->poly1305 = src->poly1305;
77 static size_t poly1305_size(void)
79 return POLY1305_DIGEST_SIZE;
82 static int poly1305_init(void *vmacctx)
84 /* initialize the context in MAC_ctrl function */
85 return ossl_prov_is_running();
88 static int poly1305_update(void *vmacctx, const unsigned char *data,
91 struct poly1305_data_st *ctx = vmacctx;
96 /* poly1305 has nothing to return in its update function */
97 Poly1305_Update(&ctx->poly1305, data, datalen);
101 static int poly1305_final(void *vmacctx, unsigned char *out, size_t *outl,
104 struct poly1305_data_st *ctx = vmacctx;
106 if (!ossl_prov_is_running())
108 Poly1305_Final(&ctx->poly1305, out);
109 *outl = poly1305_size();
113 static const OSSL_PARAM known_gettable_params[] = {
114 OSSL_PARAM_size_t(OSSL_MAC_PARAM_SIZE, NULL),
117 static const OSSL_PARAM *poly1305_gettable_params(void *provctx)
119 return known_gettable_params;
122 static int poly1305_get_params(OSSL_PARAM params[])
126 if ((p = OSSL_PARAM_locate(params, OSSL_MAC_PARAM_SIZE)) != NULL)
127 return OSSL_PARAM_set_size_t(p, poly1305_size());
132 static const OSSL_PARAM known_settable_ctx_params[] = {
133 OSSL_PARAM_octet_string(OSSL_MAC_PARAM_KEY, NULL, 0),
136 static const OSSL_PARAM *poly1305_settable_ctx_params(ossl_unused void *provctx)
138 return known_settable_ctx_params;
141 static int poly1305_set_ctx_params(void *vmacctx, const OSSL_PARAM *params)
143 struct poly1305_data_st *ctx = vmacctx;
144 const OSSL_PARAM *p = NULL;
146 if ((p = OSSL_PARAM_locate_const(params, OSSL_MAC_PARAM_KEY)) != NULL) {
147 if (p->data_type != OSSL_PARAM_OCTET_STRING
148 || p->data_size != POLY1305_KEY_SIZE) {
149 ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_KEY_LENGTH);
152 Poly1305_Init(&ctx->poly1305, p->data);
157 const OSSL_DISPATCH poly1305_functions[] = {
158 { OSSL_FUNC_MAC_NEWCTX, (void (*)(void))poly1305_new },
159 { OSSL_FUNC_MAC_DUPCTX, (void (*)(void))poly1305_dup },
160 { OSSL_FUNC_MAC_FREECTX, (void (*)(void))poly1305_free },
161 { OSSL_FUNC_MAC_INIT, (void (*)(void))poly1305_init },
162 { OSSL_FUNC_MAC_UPDATE, (void (*)(void))poly1305_update },
163 { OSSL_FUNC_MAC_FINAL, (void (*)(void))poly1305_final },
164 { OSSL_FUNC_MAC_GETTABLE_PARAMS, (void (*)(void))poly1305_gettable_params },
165 { OSSL_FUNC_MAC_GET_PARAMS, (void (*)(void))poly1305_get_params },
166 { OSSL_FUNC_MAC_SETTABLE_CTX_PARAMS,
167 (void (*)(void))poly1305_settable_ctx_params },
168 { OSSL_FUNC_MAC_SET_CTX_PARAMS, (void (*)(void))poly1305_set_ctx_params },