How to verify a file using an asc signature file?
- Download the key file:
wget https://ossec.github.io/files/OSSEC-ARCHIVE-KEY.asc
- Inspect the key file to confirm it has
EE1B0E6B2D8387B7as its keyid.
gpg --keyid-format long --list-options show-keyring OSSEC-ARCHIVE-KEY.asc
- If correct, then import the key:
gpg --import OSSEC-ARCHIVE-KEY.asc
- Download the software package
wget https://github.com/ossec/ossec-hids/archive/2.9.3.tar.gz
- Download the signature file
https://github.com/ossec/ossec-hids/releases/download/2.9.3/ossec-hids-2.9.3.tar.gz.asc
- Verify it
gpg --verify ossec-hids-2.9.3.tar.gz.asc 2.9.3.tar.gz
Output
gpg: Signature made Sat Dec 23 16:13:01 2017 UTC
gpg: using RSA key EE1B0E6B2D8387B7
gpg: Good signature from "Scott R. Shinn <[email protected]>" [unknown]
gpg: WARNING: This key is not certified with a trusted signature!
gpg: There is no indication that the signature belongs to the owner.
Primary key fingerprint: B50F B194 7A0A E311 45D0 5FAD EE1B 0E6B 2D83 87B7