mcuboot/boot/zephyr/keys.c

89 lines
2.9 KiB
C

/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
#include <bootutil/sign_key.h>
/*
* Even though this is in principle a Zephyr-specific file, the
* simulator builds it and uses it as well. Because of that, we can't
* use Kconfig symbols for key types, and have to rely on the MCUBoot
* symbols (which Zephyr provides via this header, and the simulator
* provides via the compiler command line).
*/
#include <mcuboot_config/mcuboot_config.h>
#if !defined(MCUBOOT_HW_KEY)
#if defined(MCUBOOT_SIGN_RSA) || defined(MCUBOOT_SIGN_EC256) || defined(MCUBOOT_SIGN_ED25519)
#define HAVE_KEYS
#if defined(MCUBOOT_SIGN_RSA)
extern const unsigned char rsa_pub_key[];
extern unsigned int rsa_pub_key_len;
#elif defined(MCUBOOT_SIGN_EC256)
extern const unsigned char ecdsa_pub_key[];
extern unsigned int ecdsa_pub_key_len;
#elif defined(MCUBOOT_SIGN_ED25519)
extern const unsigned char ed25519_pub_key[];
extern unsigned int ed25519_pub_key_len;
#endif
#endif
/*
* NOTE: *_pub_key and *_pub_key_len are autogenerated based on the provided
* key file. If no key file was configured, the array and length must be
* provided and added to the build manually.
*/
#if defined(HAVE_KEYS)
const struct bootutil_key bootutil_keys[] = {
{
#if defined(MCUBOOT_SIGN_RSA)
.key = rsa_pub_key,
.len = &rsa_pub_key_len,
#elif defined(MCUBOOT_SIGN_EC256)
.key = ecdsa_pub_key,
.len = &ecdsa_pub_key_len,
#elif defined(MCUBOOT_SIGN_ED25519)
.key = ed25519_pub_key,
.len = &ed25519_pub_key_len,
#endif
},
};
const int bootutil_key_cnt = 1;
#endif /* HAVE_KEYS */
#else
unsigned int pub_key_len;
struct bootutil_key bootutil_keys[1] = {
{
.key = 0,
.len = &pub_key_len,
}
};
const int bootutil_key_cnt = 1;
#endif /* !MCUBOOT_HW_KEY */
#if defined(MCUBOOT_ENCRYPT_RSA) || defined(MCUBOOT_ENCRYPT_X25519) || defined(MCUBOOT_ENCRYPT_EC256)
extern const unsigned char enc_priv_key[];
extern unsigned int enc_priv_key_len;
const struct bootutil_key bootutil_enc_key = {
.key = enc_priv_key,
.len = &enc_priv_key_len,
};
#elif defined(MCUBOOT_ENCRYPT_KW)
#error "Encrypted images with AES-KW is not implemented yet."
#endif