Too secure to be practical!

[Anne Wilson]

I don't recall doing it, much less why, but I have an 8GB SD card containing 
data, but it is LUKS encrypted.  I can read it here, on Fedora, but it's not 
terribly useful, since I can't read it on, for instance, my daughter's Windows 
system.  There must be some way of removing the encryption?  Any hints?

Anne