| David Brown | e7c6663 | 2017-01-10 09:51:39 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * Minimal configuration for using TLS in the bootloader |
| 3 | * |
| 4 | * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved |
| 5 | * Copyright (C) 2016, Linaro Ltd |
| 6 | * SPDX-License-Identifier: Apache-2.0 |
| 7 | * |
| 8 | * Licensed under the Apache License, Version 2.0 (the "License"); you may |
| 9 | * not use this file except in compliance with the License. |
| 10 | * You may obtain a copy of the License at |
| 11 | * |
| 12 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 13 | * |
| 14 | * Unless required by applicable law or agreed to in writing, software |
| 15 | * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| 16 | * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 17 | * See the License for the specific language governing permissions and |
| 18 | * limitations under the License. |
| 19 | * |
| 20 | * This file is part of mbed TLS (https://tls.mbed.org) |
| 21 | */ |
| 22 | |
| 23 | /* |
| 24 | * Minimal configuration for using TLS in the bootloader |
| 25 | * |
| 26 | * - RSA or ECDSA signature verification |
| 27 | */ |
| 28 | |
| 29 | #ifndef MBEDTLS_CONFIG_H |
| 30 | #define MBEDTLS_CONFIG_H |
| 31 | |
| 32 | /* TODO: Configure this between app and target. Really, we want the |
| 33 | * config to come from the app. */ |
| 34 | #define CONFIG_BOOT_VERIFY_RSA_SIGNATURE |
| 35 | |
| 36 | /* System support */ |
| 37 | #define MBEDTLS_PLATFORM_C |
| 38 | #define MBEDTLS_PLATFORM_MEMORY |
| 39 | #define MBEDTLS_MEMORY_BUFFER_ALLOC_C |
| 40 | #define MBEDTLS_PLATFORM_NO_STD_FUNCTIONS |
| 41 | #define MBEDTLS_PLATFORM_EXIT_ALT |
| 42 | #define MBEDTLS_NO_PLATFORM_ENTROPY |
| 43 | #define MBEDTLS_NO_DEFAULT_ENTROPY_SOURCES |
| 44 | #define MBEDTLS_PLATFORM_PRINTF_ALT |
| 45 | |
| 46 | #if !defined(CONFIG_ARM) |
| 47 | #define MBEDTLS_HAVE_ASM |
| 48 | #endif |
| 49 | |
| 50 | #if defined(CONFIG_MBEDTLS_TEST) |
| 51 | #define MBEDTLS_SELF_TEST |
| 52 | #define MBEDTLS_DEBUG_C |
| 53 | #else |
| 54 | #define MBEDTLS_ENTROPY_C |
| 55 | #define MBEDTLS_TEST_NULL_ENTROPY |
| 56 | #endif |
| 57 | |
| 58 | /* mbed TLS feature support */ |
| 59 | #ifdef CONFIG_BOOT_VERIFY_ECDSA_SIGNATURE |
| 60 | #define MBEDTLS_ECP_DP_SECP256R1_ENABLED |
| 61 | #define MBEDTLS_ECP_DP_SECP224R1_ENABLED |
| 62 | #define MBEDTLS_ECP_NIST_OPTIM |
| 63 | #define MBEDTLS_ECDSA_C |
| 64 | #define MBEDTLS_ECDH_C |
| 65 | #define MBEDTLS_ECP_C |
| 66 | #endif |
| 67 | |
| 68 | #ifdef CONFIG_BOOT_VERIFY_RSA_SIGNATURE |
| 69 | #define MBEDTLS_RSA_C |
| 70 | #define MBEDTLS_PKCS1_V15 |
| 71 | #endif |
| 72 | |
| 73 | /* mbed TLS modules */ |
| 74 | #define MBEDTLS_ASN1_PARSE_C |
| 75 | #define MBEDTLS_ASN1_WRITE_C |
| 76 | #define MBEDTLS_BIGNUM_C |
| 77 | #define MBEDTLS_MD_C |
| 78 | #define MBEDTLS_OID_C |
| 79 | #define MBEDTLS_SHA256_C |
| 80 | |
| 81 | /* Save RAM by adjusting to our exact needs */ |
| 82 | #ifdef CONFIG_BOOT_VERIFY_RSA_SIGNATURE |
| 83 | #define MBEDTLS_ECP_MAX_BITS 2048 |
| 84 | #define MBEDTLS_MPI_MAX_SIZE 256 |
| 85 | #else |
| 86 | #define MBEDTLS_ECP_MAX_BITS 256 |
| 87 | #define MBEDTLS_MPI_MAX_SIZE 32 // 256 bits is 32 bytes |
| 88 | #endif |
| 89 | |
| 90 | #define MBEDTLS_SSL_MAX_CONTENT_LEN 1024 |
| 91 | |
| 92 | /* Save ROM and a few bytes of RAM by specifying our own ciphersuite list */ |
| 93 | #define MBEDTLS_SSL_CIPHERSUITES MBEDTLS_TLS_ECJPAKE_WITH_AES_128_CCM_8 |
| 94 | |
| 95 | #include "mbedtls/check_config.h" |
| 96 | |
| 97 | #endif /* MBEDTLS_CONFIG_H */ |