How does one access a class object in memory?

[Mike Pliam]

I dont think I am asking this question properly, but I really dont know how to ask it.

I need to access a section of memory directly, byte by byte. If this block of data were in a binary file, no problem. But how to access the block if it's in memory somewhere.

Actually, I didnt think this question through very well before I asked it. In fact, I plan to write a section of data to memory, encrypt it byte by byte, then save it to disk.

Has anyone dealt with this kind of problem before. Any and all ideas greatly appreciated.

Thanks

Mike