From 6d88c555019f32509f303e23dcfbba824fecd2ee Mon Sep 17 00:00:00 2001
From: Chris Hiszpanski <chris@hiszpanski.name>
Date: Thu, 18 Apr 2019 00:55:30 -0700
Subject: Initial public commit.

mDNS and SDP are functional. Otherwise, library is still very much
a work in progress. All tests pass.
---
 src/prng.c | 47 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 47 insertions(+)
 create mode 100644 src/prng.c

(limited to 'src/prng.c')

diff --git a/src/prng.c b/src/prng.c
new file mode 100644
index 0000000..147304b
--- /dev/null
+++ b/src/prng.c
@@ -0,0 +1,47 @@
+/**
+ * liburtc
+ * Copyright 2020 Chris Hiszpanski
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#include <stdint.h>
+#include <stdlib.h>
+#include <time.h>
+
+#include "prng.h"
+
+/**
+ * Initialize pseudo-random number generator
+ */
+void prng_init() {
+	srand(time(NULL));
+}
+
+/**
+ * Fill specified memory with pseudo-random data
+ *
+ * \param dst Destination memory
+ * \param sz Size (in bytes) of destination memory
+ */
+void prng(void *dst, size_t sz) {
+	for (; sz; sz--) {
+		*(uint8_t *)dst++ = rand() & 0xFF;
+	}
+}
-- 
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