2 * Copyright 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_numbers.h>
12 #include <openssl/core_names.h>
13 #include <openssl/params.h>
14 #include "openssl/param_build.h"
15 #include "crypto/ecx.h"
16 #include "prov/implementations.h"
17 #include "prov/providercommon.h"
19 static OSSL_OP_keymgmt_new_fn x25519_new_key;
20 static OSSL_OP_keymgmt_new_fn x448_new_key;
21 static OSSL_OP_keymgmt_new_fn ed25519_new_key;
22 static OSSL_OP_keymgmt_new_fn ed448_new_key;
23 static OSSL_OP_keymgmt_get_params_fn x25519_get_params;
24 static OSSL_OP_keymgmt_get_params_fn x448_get_params;
25 static OSSL_OP_keymgmt_get_params_fn ed25519_get_params;
26 static OSSL_OP_keymgmt_get_params_fn ed448_get_params;
27 static OSSL_OP_keymgmt_gettable_params_fn ecx_gettable_params;
28 static OSSL_OP_keymgmt_has_fn ecx_has;
29 static OSSL_OP_keymgmt_import_fn ecx_import;
30 static OSSL_OP_keymgmt_import_types_fn ecx_imexport_types;
31 static OSSL_OP_keymgmt_export_fn ecx_export;
32 static OSSL_OP_keymgmt_export_types_fn ecx_imexport_types;
34 #define ECX_POSSIBLE_SELECTIONS (OSSL_KEYMGMT_SELECT_KEYPAIR)
36 static void *x25519_new_key(void *provctx)
38 return ecx_key_new(ECX_KEY_TYPE_X25519, 0);
41 static void *x448_new_key(void *provctx)
43 return ecx_key_new(ECX_KEY_TYPE_X448, 0);
46 static void *ed25519_new_key(void *provctx)
48 return ecx_key_new(ECX_KEY_TYPE_ED25519, 0);
51 static void *ed448_new_key(void *provctx)
53 return ecx_key_new(ECX_KEY_TYPE_ED448, 0);
56 static int ecx_has(void *keydata, int selection)
58 ECX_KEY *key = keydata;
62 if ((selection & ECX_POSSIBLE_SELECTIONS) != 0)
65 if ((selection & OSSL_KEYMGMT_SELECT_PUBLIC_KEY) != 0)
66 ok = ok && key->haspubkey;
68 if ((selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY) != 0)
69 ok = ok && key->privkey != NULL;
74 static int ecx_import(void *keydata, int selection, const OSSL_PARAM params[])
76 ECX_KEY *key = keydata;
78 int include_private = 0;
83 if ((selection & OSSL_KEYMGMT_SELECT_PUBLIC_KEY) == 0)
86 include_private = ((selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY) != 0);
87 if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR) != 0)
88 ok = ok && ecx_key_fromdata(key, params, include_private);
93 static int key_to_params(ECX_KEY *key, OSSL_PARAM_BLD *tmpl)
98 if (!OSSL_PARAM_BLD_push_octet_string(tmpl, OSSL_PKEY_PARAM_PUB_KEY,
99 key->pubkey, key->keylen))
102 if (key->privkey != NULL
103 && !OSSL_PARAM_BLD_push_octet_string(tmpl, OSSL_PKEY_PARAM_PRIV_KEY,
104 key->privkey, key->keylen))
110 static int ecx_export(void *keydata, int selection, OSSL_CALLBACK *param_cb,
113 ECX_KEY *key = keydata;
115 OSSL_PARAM *params = NULL;
121 if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR) != 0
122 && !key_to_params(key, &tmpl))
125 OSSL_PARAM_BLD_init(&tmpl);
126 params = OSSL_PARAM_BLD_to_param(&tmpl);
127 if (params == NULL) {
128 OSSL_PARAM_BLD_free(params);
132 ret = param_cb(params, cbarg);
133 OSSL_PARAM_BLD_free(params);
137 static const OSSL_PARAM ecx_key_types[] = {
138 OSSL_PARAM_octet_string(OSSL_PKEY_PARAM_PUB_KEY, NULL, 0),
139 OSSL_PARAM_octet_string(OSSL_PKEY_PARAM_PRIV_KEY, NULL, 0),
142 static const OSSL_PARAM *ecx_imexport_types(int selection)
144 if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR) != 0)
145 return ecx_key_types;
149 static int ecx_get_params(OSSL_PARAM params[], int bits, int secbits,
154 if ((p = OSSL_PARAM_locate(params, OSSL_PKEY_PARAM_BITS)) != NULL
155 && !OSSL_PARAM_set_int(p, bits))
157 if ((p = OSSL_PARAM_locate(params, OSSL_PKEY_PARAM_SECURITY_BITS)) != NULL
158 && !OSSL_PARAM_set_int(p, secbits))
160 if ((p = OSSL_PARAM_locate(params, OSSL_PKEY_PARAM_MAX_SIZE)) != NULL
161 && !OSSL_PARAM_set_int(p, size))
166 static int x25519_get_params(void *key, OSSL_PARAM params[])
168 return ecx_get_params(params, X25519_BITS, X25519_SECURITY_BITS, X25519_KEYLEN);
171 static int x448_get_params(void *key, OSSL_PARAM params[])
173 return ecx_get_params(params, X448_BITS, X448_SECURITY_BITS, X448_KEYLEN);
176 static int ed25519_get_params(void *key, OSSL_PARAM params[])
178 return ecx_get_params(params, ED25519_BITS, ED25519_SECURITY_BITS, ED25519_KEYLEN);
181 static int ed448_get_params(void *key, OSSL_PARAM params[])
183 return ecx_get_params(params, ED448_BITS, ED448_SECURITY_BITS, ED448_KEYLEN);
186 static const OSSL_PARAM ecx_params[] = {
187 OSSL_PARAM_int(OSSL_PKEY_PARAM_BITS, NULL),
188 OSSL_PARAM_int(OSSL_PKEY_PARAM_SECURITY_BITS, NULL),
189 OSSL_PARAM_int(OSSL_PKEY_PARAM_MAX_SIZE, NULL),
193 static const OSSL_PARAM *ecx_gettable_params(void)
198 #define MAKE_KEYMGMT_FUNCTIONS(alg) \
199 const OSSL_DISPATCH alg##_keymgmt_functions[] = { \
200 { OSSL_FUNC_KEYMGMT_NEW, (void (*)(void))alg##_new_key }, \
201 { OSSL_FUNC_KEYMGMT_FREE, (void (*)(void))ecx_key_free }, \
202 { OSSL_FUNC_KEYMGMT_GET_PARAMS, (void (*) (void))alg##_get_params }, \
203 { OSSL_FUNC_KEYMGMT_GETTABLE_PARAMS, (void (*) (void))ecx_gettable_params }, \
204 { OSSL_FUNC_KEYMGMT_HAS, (void (*)(void))ecx_has }, \
205 { OSSL_FUNC_KEYMGMT_IMPORT, (void (*)(void))ecx_import }, \
206 { OSSL_FUNC_KEYMGMT_IMPORT_TYPES, (void (*)(void))ecx_imexport_types }, \
207 { OSSL_FUNC_KEYMGMT_EXPORT, (void (*)(void))ecx_export }, \
208 { OSSL_FUNC_KEYMGMT_EXPORT_TYPES, (void (*)(void))ecx_imexport_types }, \
212 MAKE_KEYMGMT_FUNCTIONS(x25519)
213 MAKE_KEYMGMT_FUNCTIONS(x448)
214 MAKE_KEYMGMT_FUNCTIONS(ed25519)
215 MAKE_KEYMGMT_FUNCTIONS(ed448)