MD5 algorithm in Objective C?

Md5 is available on the iPhone and can be added as an extension for ie NSString and NSData like below MyExtensions. H interface NSString (MyExtensions) - (NSString *) md5; @end @interface NSData (MyExtensions) - (NSString*)md5; @end MyExtensions. M import "MyExtensions.

H" #import // Need to import for CC_MD5 access @implementation NSString (MyExtensions) - (NSString *) md5 { const char *cStr = self UTF8String; unsigned char result16; CC_MD5( cStr, strlen(cStr), result ); // This is the md5 call return NSString stringWithFormat: @"%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x", result0, result1, result2, result3, result4, result5, result6, result7, result8, result9, result10, result11, result12, result13, result14, result15 ; } @end @implementation NSData (MyExtensions) - (NSString*)md5 { unsigned char result16; CC_MD5( self. Bytes, self. Length, result ); // This is the md5 call return NSString stringWithFormat: @"%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x", result0, result1, result2, result3, result4, result5, result6, result7, result8, result9, result10, result11, result12, result13, result14, result15 ; } @end EDIT Added NSData md5 because I needed it myself and thought this is a good place to save this little snippet.

Md5 is available on the iPhone and can be added as an extension for ie NSString and NSData like below. MyExtensions. H @interface NSString (MyExtensions) - (NSString *) md5; @end @interface NSData (MyExtensions) - (NSString*)md5; @end MyExtensions.

M #import "MyExtensions. H" #import // Need to import for CC_MD5 access @implementation NSString (MyExtensions) - (NSString *) md5 { const char *cStr = self UTF8String; unsigned char result16; CC_MD5( cStr, strlen(cStr), result ); // This is the md5 call return NSString stringWithFormat: @"%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x", result0, result1, result2, result3, result4, result5, result6, result7, result8, result9, result10, result11, result12, result13, result14, result15 ; } @end @implementation NSData (MyExtensions) - (NSString*)md5 { unsigned char result16; CC_MD5( self. Bytes, self.

Length, result ); // This is the md5 call return NSString stringWithFormat: @"%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x", result0, result1, result2, result3, result4, result5, result6, result7, result8, result9, result10, result11, result12, result13, result14, result15 ; } @end EDIT Added NSData md5 because I needed it myself and thought this is a good place to save this little snippet...

4 Great little snippet - thanks (+1). – jkp Jun 9 '10 at 10:08.

This has been asked before here on stackoverflow: stackoverflow.com/questions/652300/using....

If anyone was looking for a solution to this for a REST API implementation, like I was for hours. You can check out my blog for the solution. I was able to produce a correctly formatted utf-8 MD5 hash all in lower case using a class method that I produced.

See it here saobart.com/md5-has-in-objective-c.

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