Updating ITFoundation to include updates spurred by Haven development.

[ITFoundation.git] / ITCategory-NSData.m

diff --git a/ITCategory-NSData.m b/ITCategory-NSData.m
new file mode 100644 (file)
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