Security-57740.1.18.tar.gz

[apple/security.git] / KeychainCircle / NSData+SecRandom.m

diff --git a/KeychainCircle/NSData+SecRandom.m b/KeychainCircle/NSData+SecRandom.m
new file mode 100644 (file)
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+++ b/KeychainCircle/NSData+SecRandom.m
@@ -0,0 +1,26 @@
+//
+//  NSData+SecRandom.m
+//  Security
+//
+//  Created by Mitch Adler on 4/15/16.
+//
+//
+
+#import <Foundation/Foundation.h>
+#import <NSData+SecRandom.h>
+
+#include <Security/SecRandom.h>
+
+@implementation NSMutableData (SecRandom)
+
++ (instancetype) dataWithRandomBytes: (int) length {
+
+    NSMutableData* result = [NSMutableData dataWithLength: length];
+
+    if (0 != SecRandomCopyBytes(kSecRandomDefault, result.length, result.mutableBytes))
+        return nil;
+
+    return result;
+}
+
+@end