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Add useful information about single precision math and document options for enabling additional curves/key sizes.

pull/7098/head
David Garske 2023-12-27 10:25:46 -08:00
parent 65ba8bd6ba
commit be8000d5f7
1 changed files with 18 additions and 8 deletions
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26
IDE/STM32Cube/default_conf.ftl
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@ -213,14 +213,17 @@ extern ${variable.value} ${variable.name};
/* ------------------------------------------------------------------------- */
/* Math Configuration */
/* ------------------------------------------------------------------------- */
/* 1=Fast (stack)
* 2=Normal (heap)
* 3=Single Precision C (only common curves/key sizes)
* 4=Single Precision ASM Cortex-M3+
* 5=Single Precision ASM Cortex-M0 (Generic Thumb)
* 6=Single Precision C all small
* 7=Single Precision C all big
/* 1=Fast (stack) (tfm.c)
* 2=Normal (heap) (integer.c)
* 3-5=Single Precision: only common curves/key sizes:
* (ECC 256/384/521 and RSA/DH 2048/3072/4096)
* 3=Single Precision C (sp_c32.c)
* 4=Single Precision ASM Cortex-M3+ (sp_cortexm.c)
* 5=Single Precision ASM Cortex-M0 (sp_armthumb.c)
* 6=Wolf multi-precision C small (sp_int.c)
* 7=Wolf multi-precision C big (sp_int.c)
*/
#if defined(WOLF_CONF_MATH) && WOLF_CONF_MATH == 1
/* fast (stack) math - tfm.c */
#define USE_FAST_MATH
@ -246,19 +249,26 @@ extern ${variable.value} ${variable.name};
#endif
#if defined(WOLF_CONF_RSA) && WOLF_CONF_RSA == 1
#define WOLFSSL_HAVE_SP_RSA
//#define WOLFSSL_SP_NO_2048
//#define WOLFSSL_SP_NO_3072
//#define WOLFSSL_SP_4096
#endif
#if defined(WOLF_CONF_DH) && WOLF_CONF_DH == 1
#define WOLFSSL_HAVE_SP_DH
#endif
#if defined(WOLF_CONF_ECC) && WOLF_CONF_ECC == 1
#define WOLFSSL_HAVE_SP_ECC
//#define WOLFSSL_SP_NO_256
//#define WOLFSSL_SP_384
//#define WOLFSSL_SP_521
#endif
#if WOLF_CONF_MATH == 6 || WOLF_CONF_MATH == 7
#define WOLFSSL_SP_MATH_ALL /* use sp_int.c multi precision math */
//#define WOLFSSL_SP_ARM_THUMB /* enable ARM Thumb ASM speedups */
#else
#define WOLFSSL_SP_MATH /* disable non-standard curves / key sizes */
#endif
#define SP_WORD_SIZE 32
#define SP_WORD_SIZE 32 /* force 32-bit mode */
/* Enable to put all math on stack (no heap) */
//#define WOLFSSL_SP_NO_MALLOC