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Add support for the Infineon/Cypress HAL TRNG.

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This commit is contained in:
David Garske
2024-03-28 13:20:20 -07:00
parent 2d7f9d1874
commit 83dc3dfac1
2 changed files with 51 additions and 3 deletions
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16
IDE/Infineon/user_settings.h
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@@ -37,6 +37,8 @@ extern "C" {
#define NO_WRITEV #define NO_WRITEV
#define NO_MAIN_DRIVER #define NO_MAIN_DRIVER
#define WOLFSSL_IGNORE_FILE_WARN /* ignore file include warnings */ #define WOLFSSL_IGNORE_FILE_WARN /* ignore file include warnings */
#define WOLFSSL_SMALL_STACK /* limit stack usage */
#define BENCH_EMBEDDED
/* TLS (allow TLS v1.3 or v1.2) */ /* TLS (allow TLS v1.3 or v1.2) */
#define WOLFSSL_TLS13 #define WOLFSSL_TLS13
@@ -132,6 +134,13 @@ extern "C" {
#define HAVE_X963_KDF #define HAVE_X963_KDF
#define WOLFSSL_BASE64_ENCODE #define WOLFSSL_BASE64_ENCODE
#if 1
#define HAVE_SESSION_TICKETS
#define SMALL_SESSION_CACHE
#else
#define NO_SESSION_CACHE
#endif
/* Disables */ /* Disables */
#define NO_PKCS8 #define NO_PKCS8
#define NO_PKCS12 #define NO_PKCS12
@@ -145,9 +154,12 @@ extern "C" {
#define WOLFSSL_NO_SHAKE128 #define WOLFSSL_NO_SHAKE128
#define WOLFSSL_NO_SHAKE256 #define WOLFSSL_NO_SHAKE256
/* Low Resource Options */ /* Logging */
#ifdef ENABLE_SECURE_SOCKETS_LOGS
#define DEBUG_WOLFSSL
#else
#define NO_ERROR_STRINGS #define NO_ERROR_STRINGS
#define NO_SESSION_CACHE #endif
#ifdef __cplusplus #ifdef __cplusplus
} }

36
wolfcrypt/src/random.c
View File

@@ -128,6 +128,8 @@ This library contains implementation for the random number generator.
#elif defined(WOLFSSL_TELIT_M2MB) #elif defined(WOLFSSL_TELIT_M2MB)
#elif defined(WOLFSSL_SCE) && !defined(WOLFSSL_SCE_NO_TRNG) #elif defined(WOLFSSL_SCE) && !defined(WOLFSSL_SCE_NO_TRNG)
#elif defined(WOLFSSL_IMXRT1170_CAAM) #elif defined(WOLFSSL_IMXRT1170_CAAM)
#elif defined(CY_USING_HAL) && defined(COMPONENT_WOLFSSL)
#include "cyhal_trng.h" /* Infineon/Cypress HAL RNG implementation */
#elif defined(WOLFSSL_GETRANDOM) #elif defined(WOLFSSL_GETRANDOM)
#include <errno.h> #include <errno.h>
#include <sys/random.h> #include <sys/random.h>
@@ -3832,6 +3834,40 @@ int wc_GenerateSeed(OS_Seed* os, byte* output, word32 sz)
return ret; return ret;
} }
#elif defined(CY_USING_HAL) && defined(COMPONENT_WOLFSSL)
/* Infineon/Cypress HAL RNG implementation */
int wc_GenerateSeed(OS_Seed* os, byte* output, word32 sz)
{
cyhal_trng_t obj;
cy_rslt_t result;
uint32_t val;
word32 i = 0;
(void)os;
result = cyhal_trng_init(&obj);
if (result == CY_RSLT_SUCCESS) {
while (i < sz) {
/* If not aligned or there is odd/remainder add single byte */
if( (i + sizeof(word32)) > sz ||
((wc_ptr_t)&output[i] % sizeof(word32)) != 0
) {
val = cyhal_trng_generate(&obj);
output[i++] = (byte)val;
}
else {
/* Use native 32 instruction */
val = cyhal_trng_generate(&obj);
*((uint32_t*)&output[i]) = val;
i += sizeof(word32);
}
}
cyhal_trng_free(&obj);
}
return 0;
}
#elif defined(WOLFSSL_SAFERTOS) || defined(WOLFSSL_LEANPSK) || \ #elif defined(WOLFSSL_SAFERTOS) || defined(WOLFSSL_LEANPSK) || \
defined(WOLFSSL_IAR_ARM) || defined(WOLFSSL_MDK_ARM) || \ defined(WOLFSSL_IAR_ARM) || defined(WOLFSSL_MDK_ARM) || \
defined(WOLFSSL_uITRON4) || defined(WOLFSSL_uTKERNEL2) || \ defined(WOLFSSL_uITRON4) || defined(WOLFSSL_uTKERNEL2) || \