/usr/share/igtf-policy/classic/SDG.info is in igtf-policy-classic 1.59-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 | alias = SDG
crl_url = http://ca.sdg.grid.cn/crl/cacrl.pem
email = sdgca@cnic.cn
status = accredited:classic
url = http://ca.sdg.grid.cn/en/
version = 1.59
sha1fp.0 = 56:C2:85:51:67:78:6D:7D:F3:33:23:9E:89:12:21:5F:27:D5:33:47
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