1 files changed, 28 insertions, 0 deletions
diff --git a/xcode/OLMKit/OLMUtility.m b/xcode/OLMKit/OLMUtility.m
new file mode 100644
index 0000000..0148932
--- /dev/null
+++ b/xcode/OLMKit/OLMUtility.m
@@ -0,0 +1,28 @@
+//
+//  OLMUtility.m
+//  olm
+//
+//  Created by Chris Ballinger on 4/8/16.
+//
+//
+
+#import "OLMUtility.h"
+
+@implementation OLMUtility
+
++ (NSData*) randomBytesOfLength:(NSUInteger)length {
+    uint8_t *randomBytes = malloc(length * sizeof(uint8_t));
+    NSParameterAssert(randomBytes != NULL);
+    if (!randomBytes) {
+        return nil;
+    }
+    int result = SecRandomCopyBytes(kSecRandomDefault, length, randomBytes);
+    if (result != 0) {
+        free(randomBytes);
+        return nil;
+    }
+    NSData *data = [NSData dataWithBytesNoCopy:randomBytes length:length freeWhenDone:YES];
+    return data;
+}
+
+@end