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I have lost some Axcrypt files on my hard drive, as I have changed the extension. Is there a way to detect those files (via header, size, etc.)

If not, are there some tools to detect discordance between a file's header and filetype?

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The encrypted files have a common header. The first 4 bytes of AXX files are C0 B9 07 2E. The static header is actually longer than this, but 4 bytes should be enough to rule out false positives.

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Do you know a tool who scan for files with this header ? – si2w May 22 '12 at 19:21
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use the command "find" with: test "$(head -c 4 $file)" = "$(echo -e '\xc0\xb9\x07\x2e')" – Diego May 23 '12 at 22:23

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