-/* crypto/ec/ec_kmeth.c */
/*
- * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
- * project.
- */
-/* ====================================================================
- * Copyright (c) 2015 The OpenSSL Project. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * 3. All advertising materials mentioning features or use of this
- * software must display the following acknowledgment:
- * "This product includes software developed by the OpenSSL Project
- * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
- *
- * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
- * endorse or promote products derived from this software without
- * prior written permission. For written permission, please contact
- * licensing@OpenSSL.org.
+ * Copyright 2015-2020 The OpenSSL Project Authors. All Rights Reserved.
*
- * 5. Products derived from this software may not be called "OpenSSL"
- * nor may "OpenSSL" appear in their names without prior written
- * permission of the OpenSSL Project.
- *
- * 6. Redistributions of any form whatsoever must retain the following
- * acknowledgment:
- * "This product includes software developed by the OpenSSL Project
- * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
- *
- * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
- * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
- * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
- * OF THE POSSIBILITY OF SUCH DAMAGE.
- * ====================================================================
+ * Licensed under the Apache License 2.0 (the "License"). You may not use
+ * this file except in compliance with the License. You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+/*
+ * ECDH and ECDSA low level APIs are deprecated for public use, but still ok
+ * for internal use.
*/
+#include "internal/deprecated.h"
+#include <string.h>
#include <openssl/ec.h>
-#ifndef OPENSSL_NO_ENGINE
-# include <openssl/engine.h>
-#endif
+#include <openssl/engine.h>
#include <openssl/err.h>
-#include "ec_lcl.h"
+#include "ec_local.h"
static const EC_KEY_METHOD openssl_ec_key_method = {
ossl_ecdsa_verify_sig
};
-const EC_KEY_METHOD *default_ec_key_meth = &openssl_ec_key_method;
+static const EC_KEY_METHOD *default_ec_key_meth = &openssl_ec_key_method;
const EC_KEY_METHOD *EC_KEY_OpenSSL(void)
{
default_ec_key_meth = meth;
}
-EC_KEY *EC_KEY_new_method(ENGINE *engine)
+const EC_KEY_METHOD *EC_KEY_get_method(const EC_KEY *key)
+{
+ return key->meth;
+}
+
+int EC_KEY_set_method(EC_KEY *key, const EC_KEY_METHOD *meth)
+{
+ void (*finish)(EC_KEY *key) = key->meth->finish;
+
+ if (finish != NULL)
+ finish(key);
+
+#if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
+ ENGINE_finish(key->engine);
+ key->engine = NULL;
+#endif
+
+ key->meth = meth;
+ if (meth->init != NULL)
+ return meth->init(key);
+ return 1;
+}
+
+EC_KEY *ec_key_new_method_int(OPENSSL_CTX *libctx, const char *propq,
+ ENGINE *engine)
{
EC_KEY *ret = OPENSSL_zalloc(sizeof(*ret));
if (ret == NULL) {
- ECerr(EC_F_EC_KEY_NEW_METHOD, ERR_R_MALLOC_FAILURE);
- return (NULL);
+ ECerr(EC_F_EC_KEY_NEW_METHOD_INT, ERR_R_MALLOC_FAILURE);
+ return NULL;
}
+
+ ret->libctx = libctx;
+ if (propq != NULL) {
+ ret->propq = OPENSSL_strdup(propq);
+ if (ret->propq == NULL) {
+ ECerr(EC_F_EC_KEY_NEW_METHOD_INT, ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+ }
+
+ ret->references = 1;
+ ret->lock = CRYPTO_THREAD_lock_new();
+ if (ret->lock == NULL) {
+ ECerr(EC_F_EC_KEY_NEW_METHOD_INT, ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+
ret->meth = EC_KEY_get_default_method();
-#ifndef OPENSSL_NO_ENGINE
+#if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
if (engine != NULL) {
if (!ENGINE_init(engine)) {
- ECerr(EC_F_EC_KEY_NEW_METHOD, ERR_R_ENGINE_LIB);
- OPENSSL_free(ret);
- return NULL;
+ ECerr(EC_F_EC_KEY_NEW_METHOD_INT, ERR_R_ENGINE_LIB);
+ goto err;
}
ret->engine = engine;
} else
if (ret->engine != NULL) {
ret->meth = ENGINE_get_EC(ret->engine);
if (ret->meth == NULL) {
- ECerr(EC_F_EC_KEY_NEW_METHOD, ERR_R_ENGINE_LIB);
- ENGINE_finish(ret->engine);
- OPENSSL_free(ret);
- return NULL;
+ ECerr(EC_F_EC_KEY_NEW_METHOD_INT, ERR_R_ENGINE_LIB);
+ goto err;
}
}
#endif
ret->version = 1;
ret->conv_form = POINT_CONVERSION_UNCOMPRESSED;
- ret->references = 1;
+
+/* No ex_data inside the FIPS provider */
+#ifndef FIPS_MODULE
+ if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_EC_KEY, ret, &ret->ex_data)) {
+ goto err;
+ }
+#endif
+
if (ret->meth->init != NULL && ret->meth->init(ret) == 0) {
- EC_KEY_free(ret);
- return NULL;
+ ECerr(EC_F_EC_KEY_NEW_METHOD_INT, ERR_R_INIT_FAIL);
+ goto err;
}
return ret;
+
+ err:
+ EC_KEY_free(ret);
+ return NULL;
}
+#ifndef FIPS_MODULE
+EC_KEY *EC_KEY_new_method(ENGINE *engine)
+{
+ return ec_key_new_method_int(NULL, NULL, engine);
+}
+#endif
+
int ECDH_compute_key(void *out, size_t outlen, const EC_POINT *pub_key,
- EC_KEY *eckey,
+ const EC_KEY *eckey,
void *(*KDF) (const void *in, size_t inlen, void *out,
size_t *outlen))
{
- if (eckey->meth->compute_key != NULL)
- return eckey->meth->compute_key(out, outlen, pub_key, eckey, KDF);
- ECerr(EC_F_ECDH_COMPUTE_KEY, EC_R_OPERATION_NOT_SUPPORTED);
- return 0;
+ unsigned char *sec = NULL;
+ size_t seclen;
+ if (eckey->meth->compute_key == NULL) {
+ ECerr(EC_F_ECDH_COMPUTE_KEY, EC_R_OPERATION_NOT_SUPPORTED);
+ return 0;
+ }
+ if (outlen > INT_MAX) {
+ ECerr(EC_F_ECDH_COMPUTE_KEY, EC_R_INVALID_OUTPUT_LENGTH);
+ return 0;
+ }
+ if (!eckey->meth->compute_key(&sec, &seclen, pub_key, eckey))
+ return 0;
+ if (KDF != NULL) {
+ KDF(sec, seclen, out, &outlen);
+ } else {
+ if (outlen > seclen)
+ outlen = seclen;
+ memcpy(out, sec, outlen);
+ }
+ OPENSSL_clear_free(sec, seclen);
+ return outlen;
}
EC_KEY_METHOD *EC_KEY_METHOD_new(const EC_KEY_METHOD *meth)
{
- EC_KEY_METHOD *ret;
- ret = OPENSSL_zalloc(sizeof(*meth));
+ EC_KEY_METHOD *ret = OPENSSL_zalloc(sizeof(*meth));
+
if (ret == NULL)
return NULL;
if (meth != NULL)
}
void EC_KEY_METHOD_set_compute_key(EC_KEY_METHOD *meth,
- int (*ckey)(void *out,
- size_t outlen,
+ int (*ckey)(unsigned char **psec,
+ size_t *pseclen,
const EC_POINT *pub_key,
- EC_KEY *ecdh,
- void *(*KDF) (const void *in,
- size_t inlen,
- void *out,
- size_t *outlen)))
+ const EC_KEY *ecdh))
{
meth->compute_key = ckey;
}
meth->verify_sig = verify_sig;
}
-void EC_KEY_METHOD_get_init(EC_KEY_METHOD *meth,
+void EC_KEY_METHOD_get_init(const EC_KEY_METHOD *meth,
int (**pinit)(EC_KEY *key),
void (**pfinish)(EC_KEY *key),
int (**pcopy)(EC_KEY *dest, const EC_KEY *src),
*pset_public = meth->set_public;
}
-void EC_KEY_METHOD_get_keygen(EC_KEY_METHOD *meth,
+void EC_KEY_METHOD_get_keygen(const EC_KEY_METHOD *meth,
int (**pkeygen)(EC_KEY *key))
{
if (pkeygen != NULL)
*pkeygen = meth->keygen;
}
-void EC_KEY_METHOD_get_compute_key(EC_KEY_METHOD *meth,
- int (**pck)(void *out,
- size_t outlen,
+void EC_KEY_METHOD_get_compute_key(const EC_KEY_METHOD *meth,
+ int (**pck)(unsigned char **pout,
+ size_t *poutlen,
const EC_POINT *pub_key,
- EC_KEY *ecdh,
- void *(*KDF) (const void *in,
- size_t inlen,
- void *out,
- size_t *outlen)))
+ const EC_KEY *ecdh))
{
if (pck != NULL)
*pck = meth->compute_key;
}
-void EC_KEY_METHOD_get_sign(EC_KEY_METHOD *meth,
+void EC_KEY_METHOD_get_sign(const EC_KEY_METHOD *meth,
int (**psign)(int type, const unsigned char *dgst,
int dlen, unsigned char *sig,
unsigned int *siglen,
*psign_sig = meth->sign_sig;
}
-void EC_KEY_METHOD_get_verify(EC_KEY_METHOD *meth,
+void EC_KEY_METHOD_get_verify(const EC_KEY_METHOD *meth,
int (**pverify)(int type, const unsigned
char *dgst, int dgst_len,
const unsigned char *sigbuf,
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