From 1804d1f00895661869bdc0bb7a0a7f593368e801 Mon Sep 17 00:00:00 2001
From: Giovanni Di Sirio <gdisirio@gmail.com>
Date: Sat, 8 Sep 2018 08:22:05 +0000
Subject: TRNG API now takes a new "size" parameter, the API can now generate
 random numbers of variable size.

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@12249 110e8d01-0319-4d1e-a829-52ad28d1bb01
---
 os/hal/src/hal_crypto.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

(limited to 'os/hal/src/hal_crypto.c')

diff --git a/os/hal/src/hal_crypto.c b/os/hal/src/hal_crypto.c
index f49987878..7d9461d38 100644
--- a/os/hal/src/hal_crypto.c
+++ b/os/hal/src/hal_crypto.c
@@ -1700,7 +1700,8 @@ cryerror_t cryHMACSHA512Final(CRYDriver *cryp,
  * @brief   True random numbers generator.
  *
  * @param[in] cryp              pointer to the @p CRYDriver object
- * @param[out] out              128 bits output buffer
+ * @param[in] size              size of output buffer
+ * @param[out] out              output buffer
  * @return                      The operation status.
  * @retval CRY_NOERROR          if the operation succeeded.
  * @retval CRY_ERR_INV_ALGO     if the operation is unsupported on this
@@ -1710,18 +1711,19 @@ cryerror_t cryHMACSHA512Final(CRYDriver *cryp,
  *
  * @api
  */
-cryerror_t cryTRNG(CRYDriver *cryp, uint8_t *out) {
+cryerror_t cryTRNG(CRYDriver *cryp, size_t size, uint8_t *out) {
 
   osalDbgCheck((cryp != NULL) && (out != NULL));
 
   osalDbgAssert(cryp->state == CRY_READY, "not ready");
 
 #if CRY_LLD_SUPPORTS_TRNG == TRUE
-  return cry_lld_TRNG(cryp, out);
+  return cry_lld_TRNG(cryp, size, out);
 #elif HAL_CRY_USE_FALLBACK == TRUE
-  return cry_fallback_TRNG(cryp, out);
+  return cry_fallback_TRNG(cryp, size, out);
 #else
   (void)cryp;
+  (void)size;
   (void)out;
 
   return CRY_ERR_INV_ALGO;
-- 
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