Critical Description
Downloads need to be checked against the KEYS obtained from the Avro project.
Importing the current KEYS file gives:
$ gpg --import KEYS gpg: key 0xDBAF69BEA7239D59: public key "Doug Cutting (Lucene guy) <cutting@apache.org>" imported gpg: key 0xB5E0D06745472392: public key "Jeff Hammerbacher (CODE SIGNING KEY) <hammer@apache.org>" imported gpg: key 0x4FB955854318F669: 3 signatures not checked due to missing keys gpg: key 0x4FB955854318F669: public key "Tom White (CODE SIGNING KEY) <tomwhite@apache.org>" imported gpg: key 0x99CCC523E1BE8DBE: public key "Tom White (APACHE CODE SIGNING KEY) <tomwhite@apache.org>" imported gpg: key 0xFCB3CBD9D3924CCD: public key "Ryan Blue (CODE SIGNING KEY) <blue@apache.org>" imported gpg: key 0x807934FCCCC7C3A8: public key "Suraj Acharya <suraj.spa@gmail.com>" imported gpg: Total number processed: 6 gpg: imported: 6 gpg: no ultimately trusted keys found
But the 1.9.1 release artifacts were not signed with any of the PGP keys in that file, for example:
$ for asc in *.asc; do gpg --verify $asc echo done gpg: assuming signed data in 'Avro-1.9.1.tar.gz' gpg: Signature made Wed Aug 28 05:38:13 2019 EDT gpg: using RSA key CEF487F848109B4C8B8AC18DE4AE0EB72D112483 gpg: Can't check signature: No public key gpg: assuming signed data in 'avro-cpp-1.9.1.tar.gz' gpg: Signature made Wed Aug 28 05:38:23 2019 EDT gpg: using RSA key CEF487F848109B4C8B8AC18DE4AE0EB72D112483 gpg: Can't check signature: No public key gpg: assuming signed data in 'avro-doc-1.9.1.tar.gz' gpg: Signature made Wed Aug 28 05:38:23 2019 EDT gpg: using RSA key CEF487F848109B4C8B8AC18DE4AE0EB72D112483 gpg: Can't check signature: No public key gpg: assuming signed data in 'avro-js-1.9.1.tgz' gpg: Signature made Wed Aug 28 05:38:13 2019 EDT gpg: using RSA key CEF487F848109B4C8B8AC18DE4AE0EB72D112483 gpg: Can't check signature: No public key gpg: assuming signed data in 'avro-python3-1.9.1.tar.gz' gpg: Signature made Wed Aug 28 05:38:13 2019 EDT gpg: using RSA key CEF487F848109B4C8B8AC18DE4AE0EB72D112483 gpg: Can't check signature: No public key gpg: assuming signed data in 'avro-src-1.9.1.tar.gz' gpg: Signature made Wed Aug 28 05:38:23 2019 EDT gpg: using RSA key CEF487F848109B4C8B8AC18DE4AE0EB72D112483 gpg: Can't check signature: No public key