X-Git-Url: http://git.ithinksw.org/ITFoundation.git/blobdiff_plain/6262c31ef1f3b4c4cec3e909f0ecc189eb242ab2..744612b5d258474e367710b870a5caaed7d11ab9:/ITCategory-NSData.m

diff --git a/ITCategory-NSData.m b/ITCategory-NSData.m
new file mode 100644
index 0000000..0f45f68
--- /dev/null
+++ b/ITCategory-NSData.m
@@ -0,0 +1,36 @@
+#import "ITCategory-NSData.h"
+#import <openssl/md5.h>
+#import <openssl/sha.h>
+
+@implementation NSData (ITFoundationCategory)
+
+- (NSString *)hexadecimalRepresentation {
+	int dataLength = [self length];
+	int stringLength = dataLength * 2;
+	
+	char *dataBytes = [self bytes];
+	char hexString[stringLength];
+	
+	int i;
+	for (i=0; i < dataLength; i++) {
+		sprintf(hexString + (i * 2), "%02x", dataBytes[i]);
+	}
+	
+	return [NSString stringWithCString:hexString length:stringLength];
+}
+
+- (NSData *)MD5 {
+	int length = 16;
+	unsigned char digest[length];
+	MD5([self bytes], [self length], digest);
+	return [NSData dataWithBytes:&digest length:length];
+}
+
+- (NSData *)SHA1 {
+	int length = 20;
+	unsigned char digest[length];
+	SHA1([self bytes], [self length], digest);
+	return [NSData dataWithBytes:&digest length:length];
+}
+
+@end