2 * Copyright 2018 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/opensslconf.h>
11 #ifndef OPENSSL_NO_POLY1305
13 # include <openssl/core_numbers.h>
14 # include <openssl/core_names.h>
15 # include <openssl/params.h>
16 # include <openssl/evp.h>
17 # include <openssl/err.h>
19 # include "internal/poly1305.h"
21 * TODO(3.0) when poly1305 has moved entirely to our providers, this
22 * header should be moved to the provider include directory. For the
23 * moment, crypto/poly1305/poly1305_ameth.c has us stuck.
25 # include "../../../crypto/poly1305/poly1305_local.h"
27 # include "internal/providercommonerr.h"
28 # include "internal/provider_algs.h"
31 * Forward declaration of everything implemented here. This is not strictly
32 * necessary for the compiler, but provides an assurance that the signatures
33 * of the functions in the dispatch table are correct.
35 static OSSL_OP_mac_newctx_fn poly1305_new;
36 static OSSL_OP_mac_dupctx_fn poly1305_dup;
37 static OSSL_OP_mac_freectx_fn poly1305_free;
38 static OSSL_OP_mac_gettable_params_fn poly1305_gettable_params;
39 static OSSL_OP_mac_get_params_fn poly1305_get_params;
40 static OSSL_OP_mac_settable_ctx_params_fn poly1305_settable_ctx_params;
41 static OSSL_OP_mac_set_ctx_params_fn poly1305_set_ctx_params;
42 static OSSL_OP_mac_init_fn poly1305_init;
43 static OSSL_OP_mac_update_fn poly1305_update;
44 static OSSL_OP_mac_final_fn poly1305_final;
46 struct poly1305_data_st {
48 POLY1305 poly1305; /* Poly1305 data */
51 static size_t poly1305_size(void);
53 static void *poly1305_new(void *provctx)
55 struct poly1305_data_st *ctx = OPENSSL_zalloc(sizeof(*ctx));
57 ctx->provctx = provctx;
61 static void poly1305_free(void *vmacctx)
63 OPENSSL_free(vmacctx);
66 static void *poly1305_dup(void *vsrc)
68 struct poly1305_data_st *src = vsrc;
69 struct poly1305_data_st *dst = poly1305_new(src->provctx);
74 dst->poly1305 = src->poly1305;
78 static size_t poly1305_size(void)
80 return POLY1305_DIGEST_SIZE;
83 static int poly1305_init(void *vmacctx)
85 /* initialize the context in MAC_ctrl function */
89 static int poly1305_update(void *vmacctx, const unsigned char *data,
92 struct poly1305_data_st *ctx = vmacctx;
94 /* poly1305 has nothing to return in its update function */
95 Poly1305_Update(&ctx->poly1305, data, datalen);
99 static int poly1305_final(void *vmacctx, unsigned char *out, size_t *outl,
102 struct poly1305_data_st *ctx = vmacctx;
104 Poly1305_Final(&ctx->poly1305, out);
108 static const OSSL_PARAM known_gettable_params[] = {
109 OSSL_PARAM_size_t(OSSL_MAC_PARAM_SIZE, NULL),
112 static const OSSL_PARAM *poly1305_gettable_params(void)
114 return known_gettable_params;
117 static int poly1305_get_params(OSSL_PARAM params[])
121 if ((p = OSSL_PARAM_locate(params, OSSL_MAC_PARAM_SIZE)) != NULL)
122 return OSSL_PARAM_set_size_t(p, poly1305_size());
127 static const OSSL_PARAM known_settable_ctx_params[] = {
128 OSSL_PARAM_octet_string(OSSL_MAC_PARAM_KEY, NULL, 0),
131 static const OSSL_PARAM *poly1305_settable_ctx_params(void)
133 return known_settable_ctx_params;
136 static int poly1305_set_ctx_params(void *vmacctx, const OSSL_PARAM *params)
138 struct poly1305_data_st *ctx = vmacctx;
139 const OSSL_PARAM *p = NULL;
141 if ((p = OSSL_PARAM_locate_const(params, OSSL_MAC_PARAM_KEY)) != NULL) {
142 if (p->data_type != OSSL_PARAM_OCTET_STRING
143 || p->data_size != POLY1305_KEY_SIZE) {
144 ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_KEY_LENGTH);
147 Poly1305_Init(&ctx->poly1305, p->data);
152 const OSSL_DISPATCH poly1305_functions[] = {
153 { OSSL_FUNC_MAC_NEWCTX, (void (*)(void))poly1305_new },
154 { OSSL_FUNC_MAC_DUPCTX, (void (*)(void))poly1305_dup },
155 { OSSL_FUNC_MAC_FREECTX, (void (*)(void))poly1305_free },
156 { OSSL_FUNC_MAC_INIT, (void (*)(void))poly1305_init },
157 { OSSL_FUNC_MAC_UPDATE, (void (*)(void))poly1305_update },
158 { OSSL_FUNC_MAC_FINAL, (void (*)(void))poly1305_final },
159 { OSSL_FUNC_MAC_GETTABLE_PARAMS, (void (*)(void))poly1305_gettable_params },
160 { OSSL_FUNC_MAC_GET_PARAMS, (void (*)(void))poly1305_get_params },
161 { OSSL_FUNC_MAC_SETTABLE_CTX_PARAMS,
162 (void (*)(void))poly1305_settable_ctx_params },
163 { OSSL_FUNC_MAC_SET_CTX_PARAMS, (void (*)(void))poly1305_set_ctx_params },