1 files changed, 4 insertions, 21 deletions
diff --git a/board/cr50/tpm2/platform.c b/board/cr50/tpm2/platform.c
index afe5c86c74..20b5854625 100644
--- a/board/cr50/tpm2/platform.c
+++ b/board/cr50/tpm2/platform.c
@@ -8,26 +8,9 @@
 
 #include "trng.h"
 
-UINT16 _cpri__GenerateRandom(INT32 randomSize,
-			     BYTE *buffer)
+uint16_t _cpri__GenerateRandom(size_t random_size,
+			uint8_t *buffer)
 {
-	int random_togo = 0;
-	int buffer_index = 0;
-	uint32_t random_value;
-
-	/*
-	 * Retrieve random numbers in 4 byte quantities and pack as many bytes
-	 * as needed into 'buffer'. If randomSize is not divisible by 4, the
-	 * remaining random bytes get dropped.
-	 */
-	while (buffer_index < randomSize) {
-		if (!random_togo) {
-			random_value = rand();
-			random_togo = sizeof(random_value);
-		}
-		buffer[buffer_index++] = random_value >>
-			((random_togo-- - 1) * 8);
-	}
-
-	return randomSize;
+	rand_bytes(buffer, random_size);
+	return random_size;
 }