Unable to Verify 64 bit Installer on Windows

[Greg Williamson]

Hello,

While attempting to verify the installer found here:
https://cygwin.com/install.html

GPG verification for "setup-x86_64.exe" failed with "BAD signature from
"Cygwin <cygwin@cygwin.com>". I also created a SHA512 hash of the installer
and it did not match the one posted here:
https://cygwin.com/sha512.sum

As a sanity check I attempted to verify the 32bit version "setup-x86.exe".
The SHA512 matched and the GPG signature verification succeeded.

I thought I'd report here in case there was a security issue. Thank you in
advance for your assistance!

~Greg