Is there an efficient wrapper class for reading binary data in cocoa/iPhone

Hi,
I need to read a data from a binary file in my iPhone application. What is the best way to do it? Is there an efficient cocoa wrapper class for this purpose?
Thanks,
Nava

A char is a 16-bit unsigned value - depending on what you want, it may help.
I don't understand your reluctance to mask off the upper 16 bits of an integer; all it requires is a single bitwise 'and' statement. I challenge you to measure the impact of such a statement on your program.

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we are running on 7.0 and we have an encoding problem while reading binary data from MQ-series. Because we are getting flat strings from queue we use module "Plain2ML" (MessageTransformBean) for wrapping xml-elements around the incoming data.
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    at com.sap.aii.af.modules.trans.MessageTransformBean.process(MessageTransformBean.java:364)
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Caused by: sun.io.MalformedInputException
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    at sun.nio.cs.StreamDecoder$ConverterSD.convertInto(StreamDecoder.java:287)
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Kind regards, Stefan

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Is there an efficient wrapper class for reading binary data in cocoa/iPhone

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