Support Wipe data/factory reset and SD card data

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http://androidforums.com – Hi, I have done the "wipe data/factory reset" on my samsung galaxy s3. After that, I found that all my files (including photos, videos, and pdf files) in external SD card are not opened by any software. It seems the "wipe data" affect to the files in external SD card. I transferred the files into my computer but still same. Anyone could help how can I restore or fix this? I suspect that one possible problem is SD card encryption.... Just to give you a bit more details: The phone and the SD card were encrypted. and I can still see the folders and files in the SD c (General)