/*

     File: QCCMD5Digest.m

 Abstract: Calculates the MD5 digest of some data.

  Version: 1.0

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#import "QCCMD5Digest.h"

#include <CommonCrypto/CommonCrypto.h>

@interface QCCMD5Digest ()

// read/write versions of public properties

@property (atomic, copy,   readwrite) NSData *      outputDigest;

@end

@implementation QCCMD5Digest

- (id)initWithInputData:(NSData *)inputData

{

    NSParameterAssert(inputData != nil);

    self = [super init];

    if (self != nil) {

        self->_inputData = [inputData copy];

    }

    return self;

}

- (void)main

{

    uint8_t     digest[CC_MD5_DIGEST_LENGTH];

    // You can ignore the result CC_MD5 because it never fails.

    (void) CC_MD5([self.inputData bytes], (CC_LONG) [self.inputData length], digest);

    self.outputDigest = [[NSData alloc] initWithBytes:digest length:sizeof(digest)];

}

@end