/* user_settings.h
 *
 * Copyright (C) 2006-2022 wolfSSL Inc.
 *
 * This file is part of wolfSSL.
 *
 * wolfSSL is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * wolfSSL is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
 */

/* Template for the Infineon AURIX Development Studio and TC3XX
 * Example wolfSSL user settings with #if 0/1 gates to enable/disable algorithms and features.
 * This file is included with wolfssl/wolfcrypt/settings.h when WOLFSSL_USER_SETTINGS is defined.

 */

#ifndef WOLFSSL_USER_SETTINGS_H
#define WOLFSSL_USER_SETTINGS_H

#ifdef __cplusplus
extern "C" {
#endif

/* ------------------------------------------------------------------------- */
/* Platform */
/* ------------------------------------------------------------------------- */
/* Alignment and sizeof 64-bit */
#define WOLFSSL_GENERAL_ALIGNMENT 4
#define SIZEOF_LONG_LONG 8

/* disable threading - mutex locking */
#define SINGLE_THREADED

/* ignore file include warnings */
#define WOLFSSL_IGNORE_FILE_WARN

/* disable the built-in socket support and use the IO callbacks.
 * Set with wolfSSL_CTX_SetIORecv/wolfSSL_CTX_SetIOSend
 */
#define WOLFSSL_USER_IO

/* Disable file system */
#define NO_FILESYSTEM


/* ------------------------------------------------------------------------- */
/* Port */
/* ------------------------------------------------------------------------- */

/* Override Current Time */
/* Allows custom "custom_time()" function to be used for benchmark */
#define WOLFSSL_USER_CURRTIME
#define WOLFSSL_GMTIME
#define USER_TICKS
extern unsigned long my_time(unsigned long* timer);
#define XTIME my_time

/* Use built-in P-RNG (SHA256 based) with HW RNG */
#undef  HAVE_HASHDRBG
#define HAVE_HASHDRBG

/* Custom Seed Source */
#define CUSTOM_RAND_TYPE      unsigned int
extern unsigned int my_rng_seed_gen(void);
#undef  CUSTOM_RAND_GENERATE
#define CUSTOM_RAND_GENERATE  my_rng_seed_gen

/* Standard Lib - C89 */
#define XSTRCASECMP(s1,s2) strcmp((s1),(s2))


/* ------------------------------------------------------------------------- */
/* Math Configuration */
/* ------------------------------------------------------------------------- */
#undef USE_FAST_MATH
#undef WOLFSSL_SP
#if 1
    /* Wolf Single Precision Math */
    #define WOLFSSL_HAVE_SP_RSA
    //#define WOLFSSL_HAVE_SP_DH
    #define WOLFSSL_HAVE_SP_ECC
    #define WOLFSSL_SP_4096 /* Enable RSA/RH 4096-bit support */
    #define WOLFSSL_SP_384 /* Enable ECC 384-bit SECP384R1 support */

    #define WOLFSSL_SP_MATH     /* only SP math - disables integer.c/tfm.c */
    //#define WOLFSSL_SP_MATH_ALL /* use SP math for all key sizes and curves */

    #define WOLFSSL_SP_NO_MALLOC
    //#define WOLFSSL_SP_DIV_32 /* do not use 64-bit divides */
    //#define WOLFSSL_SP_CACHE_RESISTANT

    /* use smaller version of code */
    #define WOLFSSL_SP_SMALL

    /* SP Assembly Speedups - specific to chip type */
    //#define WOLFSSL_SP_ASM
    //#define WOLFSSL_SP_ARM32_ASM
    //#define WOLFSSL_SP_ARM64_ASM
    //#define WOLFSSL_SP_ARM_THUMB_ASM
    //#define WOLFSSL_SP_ARM_CORTEX_M_ASM
#endif

#ifndef WOLFSSL_SP_MATH
    #if 0
        /* fast math (tfmc.) (stack based and timing resistant) */
        #define USE_FAST_MATH
        #define TFM_TIMING_RESISTANT
    #else
        /* normal heap based integer.c (not timing resistant) */
        #define USE_INTEGER_HEAP_MATH
    #endif
#endif

/* ------------------------------------------------------------------------- */
/* Crypto */
/* ------------------------------------------------------------------------- */
/* RSA */
#undef NO_RSA
#if 1
    #ifdef USE_FAST_MATH
        /* Maximum math bits (Max RSA key bits * 2) */
        #define FP_MAX_BITS 4096
    #endif

    /* half as much memory but twice as slow */
    //#define RSA_LOW_MEM

    /* Enables blinding mode, to prevent timing attacks */
    #define WC_RSA_BLINDING

    /* RSA PSS Support */
    #define WC_RSA_PSS
#else
    #define NO_RSA
#endif

/* DH */
#undef  NO_DH
#if 0
    /* Use table for DH instead of -lm (math) lib dependency */
    #if 1
        #define WOLFSSL_DH_CONST
        #define HAVE_FFDHE_2048
        //#define HAVE_FFDHE_4096
        //#define HAVE_FFDHE_6144
        //#define HAVE_FFDHE_8192
    #endif
#else
    #define NO_DH
#endif

/* ECC */
#undef HAVE_ECC
#if 1
    #define HAVE_ECC

    /* Manually define enabled curves */
    #define ECC_USER_CURVES

    #ifdef ECC_USER_CURVES
        /* Manual Curve Selection */
        //#define HAVE_ECC192
        //#define HAVE_ECC224
        #undef NO_ECC256
        #define HAVE_ECC384
        //#define HAVE_ECC521
    #endif

    /* Fixed point cache (speeds repeated operations against same private key) */
    //#define FP_ECC
    #ifdef FP_ECC
        /* Bits / Entries */
        #define FP_ENTRIES  2
        #define FP_LUT      4
    #endif

    /* Optional ECC calculation method */
    /* Note: doubles heap usage, but slightly faster */
    #define ECC_SHAMIR

    /* Reduces heap usage, but slower */
    #define ECC_TIMING_RESISTANT

    /* Compressed ECC Key Support */
    //#define HAVE_COMP_KEY

    /* Use alternate ECC size for ECC math */
    #ifdef USE_FAST_MATH
        /* MAX ECC BITS = ROUND8(MAX ECC) * 2 */
        #if defined(NO_RSA) && defined(NO_DH)
            /* Custom fastmath size if not using RSA/DH */
            #define FP_MAX_BITS     (256 * 2)
        #else
            /* use heap allocation for ECC points */
            #define ALT_ECC_SIZE

            /* wolfSSL will compute the FP_MAX_BITS_ECC, but it can be overriden */
            //#define FP_MAX_BITS_ECC (256 * 2)
        #endif

        /* Speedups specific to curve */
        #ifndef NO_ECC256
            #define TFM_ECC256
        #endif
    #endif
#endif


/* AES */
#undef NO_AES
#if 1
    #define HAVE_AES_CBC

    /* GCM Method: GCM_TABLE_4BIT, GCM_SMALL, GCM_WORD32 or GCM_TABLE */
    #define HAVE_AESGCM
    #define GCM_SMALL

    #define WOLFSSL_AES_DIRECT
    #define HAVE_AES_ECB
#else
    #define NO_AES
#endif


/* DES3 */
#undef NO_DES3
#if 0
#else
    #define NO_DES3
#endif

/* ChaCha20 / Poly1305 */
#undef HAVE_CHACHA
#undef HAVE_POLY1305
#if 1
    #define HAVE_CHACHA
    #define HAVE_POLY1305

    /* Needed for Poly1305 */
    #define HAVE_ONE_TIME_AUTH
#endif

/* Ed25519 / Curve25519 */
#undef HAVE_CURVE25519
#undef HAVE_ED25519
#if 0
    #define HAVE_CURVE25519
    #define HAVE_ED25519 /* ED25519 Requires SHA512 */

    /* Optionally use small math (less flash usage, but much slower) */
    #if 1
        #define CURVED25519_SMALL
    #endif
#endif


/* ------------------------------------------------------------------------- */
/* Hashing */
/* ------------------------------------------------------------------------- */
/* Sha */
#undef NO_SHA
#if 1
    /* on by default */
    /* 1k smaller, but 25% slower */
    //#define USE_SLOW_SHA
#else
    #define NO_SHA
#endif

/* Sha256 */
#undef NO_SHA256
#if 1
    /* not unrolled - ~2k smaller and ~25% slower */
    //#define USE_SLOW_SHA256

    /* Sha224 */
    #if 0
        #define WOLFSSL_SHA224
    #endif
#else
    #define NO_SHA256
#endif

/* Sha512 */
#undef WOLFSSL_SHA512
#if 0
    #define WOLFSSL_SHA512

    /* Sha384 */
    #undef  WOLFSSL_SHA384
    #if 0
        #define WOLFSSL_SHA384
    #endif

    /* over twice as small, but 50% slower */
    //#define USE_SLOW_SHA512
#endif

/* Sha3 */
#undef WOLFSSL_SHA3
#if 0
    #define WOLFSSL_SHA3
#endif

/* MD5 */
#undef NO_MD5
#if 0
    /* on by default */
#else
    #define NO_MD5
#endif

/* HKDF */
#undef HAVE_HKDF
#if 1
    #define HAVE_HKDF
#endif

/* CMAC */
#undef WOLFSSL_CMAC
#if 1
    #define WOLFSSL_CMAC
    /* Note: requires WOLFSSL_AES_DIRECT */
#endif

/* HMAC - on by default */
#undef NO_HMAC
#if 1
    /* on by default */
#else
    #define NO_HMAC
#endif


/* ------------------------------------------------------------------------- */
/* ASN */
/* ------------------------------------------------------------------------- */
#if 0
    /* Use the newer ASN template code */
    #define WOLFSSL_ASN_TEMPLATE
    //#define WOLFSSL_CUSTOM_OID
    //#define HAVE_OID_ENCODING
    //#define HAVE_OID_DECODING
#else
    /* Use the original custom ASN code */
#endif
/* Optionally disable time checking for ASN */
//#define NO_ASN_TIME


/* ------------------------------------------------------------------------- */
/* Benchmark / Test */
/* ------------------------------------------------------------------------- */
/* Use reduced benchmark / test sizes */
#define BENCH_EMBEDDED

/* Use test buffers from array (not filesystem) */
#ifndef NO_FILESYSTEM
#define USE_CERT_BUFFERS_256
#define USE_CERT_BUFFERS_2048
#endif


/* ------------------------------------------------------------------------- */
/* Debugging */
/* ------------------------------------------------------------------------- */

#undef DEBUG_WOLFSSL
#undef NO_ERROR_STRINGS
#if 0
    #define DEBUG_WOLFSSL
    #define WOLFSSL_LOG_PRINTF
#else
    #if 0
        #define NO_ERROR_STRINGS
    #endif
#endif


/* ------------------------------------------------------------------------- */
/* Memory */
/* ------------------------------------------------------------------------- */
#if 0
    /* Static memory requires fast math or SP math with no malloc */
    #define WOLFSSL_STATIC_MEMORY

    /* Disable fallback malloc/free */
    #define WOLFSSL_NO_MALLOC
    #if 1
        #define WOLFSSL_MALLOC_CHECK /* trap malloc failure */
    #endif
#endif


/* ------------------------------------------------------------------------- */
/* Enable Features */
/* ------------------------------------------------------------------------- */

#define WOLFSSL_TLS13
#define WOLFSSL_OLD_PRIME_CHECK /* Use faster DH prime checking */
#define HAVE_TLS_EXTENSIONS
#define HAVE_SUPPORTED_CURVES
#define WOLFSSL_BASE64_ENCODE

//#define WOLFSSL_KEY_GEN /* For RSA Key gen only */
//#define KEEP_PEER_CERT
//#define HAVE_COMP_KEY

/* TLS Session Cache */
#if 0
    #define SMALL_SESSION_CACHE
#else
    #define NO_SESSION_CACHE
#endif


/* ------------------------------------------------------------------------- */
/* Disable Features */
/* ------------------------------------------------------------------------- */
//#define NO_WOLFSSL_SERVER
//#define NO_WOLFSSL_CLIENT
//#define NO_CRYPT_TEST
//#define NO_CRYPT_BENCHMARK
//#define WOLFCRYPT_ONLY

/* In-lining of misc.c functions */
/* If defined, must include wolfcrypt/src/misc.c in build */
/* Slower, but about 1k smaller */
//#define NO_INLINE

#define NO_WRITEV
#define NO_MAIN_DRIVER
//#define NO_DEV_RANDOM

#define NO_OLD_TLS
#define NO_PSK

#define NO_DSA
#define NO_RC4
#define NO_MD4
#define NO_PWDBASED
//#define NO_CODING
//#define NO_CERTS
//#define NO_SIG_WRAPPER

#ifdef __cplusplus
}
#endif

#endif /* WOLFSSL_USER_SETTINGS_H */
