mirror of
https://github.com/wolfSSL/wolfssl.git
synced 2026-07-05 23:20:49 +02:00
JacobBarthelmeh
232 lines
6.2 KiB
C
232 lines
6.2 KiB
C
/* user_settings_baremetal.h
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*
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* Copyright (C) 2006-2026 wolfSSL Inc.
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*
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* This file is part of wolfSSL.
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*
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* wolfSSL is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* wolfSSL is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
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*/
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/* Bare metal configuration for systems without an OS.
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* No filesystem, no malloc, static memory, minimal footprint.
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* Suitable for deeply embedded systems and bootloaders.
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*
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* Build and test:
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* cp ./examples/configs/user_settings_baremetal.h user_settings.h
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* ./configure --enable-usersettings --disable-examples
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* make
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* ./wolfcrypt/test/testwolfcrypt
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*/
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#ifndef WOLFSSL_USER_SETTINGS_H
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#define WOLFSSL_USER_SETTINGS_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* ------------------------------------------------- */
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/* Platform - Bare Metal */
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/* ------------------------------------------------- */
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#define SINGLE_THREADED
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#define NO_FILESYSTEM
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#define NO_WRITEV
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#define WOLFSSL_NO_SOCK
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#define WOLFSSL_IGNORE_FILE_WARN
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#define WOLFSSL_GENERAL_ALIGNMENT 4
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#define SIZEOF_LONG_LONG 8
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/* TLS transport requires setting IO callbacks */
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#define WOLFSSL_USER_IO
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/* ------------------------------------------------- */
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/* Memory */
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/* ------------------------------------------------- */
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#if 1 /* stack memory */
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#elif 1 /* small stack */
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/* Small stack - allocate large variables from static pool */
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#define WOLFSSL_SMALL_STACK
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#else /* static memory */
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#define WOLFSSL_STATIC_MEMORY
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#define WOLFSSL_NO_MALLOC
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#define WOLFSSL_SP_NO_MALLOC
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#define WOLFSSL_MALLOC_CHECK
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#define NO_WOLFSSL_MEMORY
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#endif
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/* ------------------------------------------------- */
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/* Math - Single Precision (smallest) */
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/* ------------------------------------------------- */
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#define WOLFSSL_SP_MATH
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#define WOLFSSL_SP_SMALL
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#define TFM_TIMING_RESISTANT
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/* ------------------------------------------------- */
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/* TLS (optional - disable for crypto-only) */
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/* ------------------------------------------------- */
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#if 0 /* TLS support */
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#define WOLFSSL_TLS13
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#define WOLFSSL_NO_TLS12
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#define NO_OLD_TLS
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#define HAVE_TLS_EXTENSIONS
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#define HAVE_SUPPORTED_CURVES
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#define HAVE_HKDF
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#else
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#define WOLFCRYPT_ONLY
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#endif
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/* ------------------------------------------------- */
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/* ECC (smallest asymmetric option) */
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/* ------------------------------------------------- */
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#if 1 /* ECC support */
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#define HAVE_ECC
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#define WOLFSSL_HAVE_SP_ECC
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#define ECC_USER_CURVES /* P-256 only */
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#undef NO_ECC256
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#define ECC_TIMING_RESISTANT
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/* Disable for smaller size */
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#if 0 /* ECC Shamir (faster, more code) */
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#define ECC_SHAMIR
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#endif
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#endif
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/* ECC Feature Reduction */
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#if 0 /* Verify only (no signing/keygen) */
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#define NO_ECC_SIGN
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#define NO_ECC_DHE
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#define NO_ECC_KEY_EXPORT
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#endif
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/* ------------------------------------------------- */
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/* RSA (disable for smallest size) */
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/* ------------------------------------------------- */
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#if 0 /* RSA support */
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#undef NO_RSA
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#define WOLFSSL_HAVE_SP_RSA
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#define WC_RSA_BLINDING
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#define RSA_LOW_MEM
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#if 0 /* Verify only */
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#define WOLFSSL_RSA_PUBLIC_ONLY
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#define WOLFSSL_RSA_VERIFY_INLINE
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#define NO_CHECK_PRIVATE_KEY
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#endif
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#else
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#define NO_RSA
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#endif
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/* ------------------------------------------------- */
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/* Symmetric Ciphers */
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/* ------------------------------------------------- */
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#if 1 /* AES */
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#define HAVE_AESGCM
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#define GCM_SMALL
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#define WOLFSSL_AES_SMALL_TABLES
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#define WOLFSSL_AES_NO_UNROLL
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#define NO_AES_192
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#define NO_AES_256
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#if 0 /* AES-CBC */
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#undef NO_AES_CBC
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#else
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#define NO_AES_CBC
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#endif
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#else
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#define NO_AES
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#endif
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#if 0 /* ChaCha20-Poly1305 */
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#define HAVE_CHACHA
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#define HAVE_POLY1305
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#endif
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/* ------------------------------------------------- */
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/* Hashing */
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/* ------------------------------------------------- */
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/* SHA-256 only (required) */
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#define USE_SLOW_SHA256
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#if 0 /* SHA-1 (legacy) */
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#undef NO_SHA
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#else
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#define NO_SHA
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#endif
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/* ------------------------------------------------- */
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/* RNG */
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/* ------------------------------------------------- */
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#if 1 /* Hash-based DRBG */
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#define HAVE_HASHDRBG
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#else
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/* Use hardware RNG directly */
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#define WC_NO_HASHDRBG
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extern int my_rng_gen_block(unsigned char* output, unsigned int sz);
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#define CUSTOM_RAND_GENERATE_BLOCK my_rng_gen_block
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#endif
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/* ------------------------------------------------- */
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/* ASN / Certificates */
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/* ------------------------------------------------- */
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#define WOLFSSL_ASN_TEMPLATE
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#if 0 /* Disable certificates for smallest size */
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#define NO_ASN
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#define NO_CERTS
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#define NO_CODING
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#endif
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/* ------------------------------------------------- */
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/* Disabled Algorithms */
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/* ------------------------------------------------- */
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#define NO_DH
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#define NO_DSA
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#define NO_RC4
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#define NO_MD4
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#define NO_MD5
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#define NO_DES3
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#define NO_DES3_TLS_SUITES
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#define NO_PSK
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#define NO_PWDBASED
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#define NO_PKCS8
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#define NO_PKCS12
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/* ------------------------------------------------- */
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/* Disabled Features */
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/* ------------------------------------------------- */
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#define NO_SIG_WRAPPER
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#define NO_SESSION_CACHE
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#define NO_ERROR_STRINGS
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#define NO_OLD_RNGNAME
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#define NO_WOLFSSL_DIR
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#define BENCH_EMBEDDED
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/* ------------------------------------------------- */
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/* Custom Time (bare metal has no RTC typically) */
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/* ------------------------------------------------- */
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#if 1 /* Custom time function */
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#define NO_ASN_TIME
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/* Or provide custom time:
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* #define USER_TIME
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* extern unsigned long my_time(unsigned long* timer);
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* #define XTIME my_time
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*/
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif /* WOLFSSL_USER_SETTINGS_H */
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