This signature file may be used to cryptographically verify file integrity, like this:: $ gpg --keyserver hkp://keyserver.ubuntu.com --recv-keys 0xA16EB94D $ gpg --list-keys 0xA16EB94D pub 2048R/A16EB94D 2008-08-15 [expires: 2023-08-12] uid Turnkey Linux Release Key $ gpg --verify turnkey-appengine-go-12.1-squeeze-i386-openstack.tar.gz.sig gpg: Signature made Tue Jun 4 19:50:48 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 35ef25defc5889759259235eaf542e52217c8d99 * md5sum c5dc8f4d069c12e32116eb0b22098425 You can calculate these on your end and compare to check for errors, but cryptographic verification is recommended for security reasons. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (GNU/Linux) iQEcBAABAgAGBQJRrkUOAAoJEIXCXpWhbrlNATUH/3FY0XYezayLBVd5G3jCxata zJF0mfoIUKr2PDBI31XJWqPZ2EgxV5zn3drtEKkGvdFp452LCLlKrnot1LgaUEmo yLmN4H9khpBgId5mBodMND8/+mRXr9j2byoErDZeANETnv1oBj0jjpw3JKmQAwyT dEFvgLSgXSuRMPWdvpLdILLKHhzbYmB3GkBnqlms7VImLT5c54dXQ0+OYty+uGGb qAyokG0Ke91T4AcoYcmr4PjHR/G24nKoELGk6dGxg0T7RTFgt5jLOeV0Zxqklasb SFY/2IJQtqux4NpAe1a+hbo8L2lg4xL2Uy4BoJ+mB8x23XyQeBshm//GcFw9IEc= =SiW9 -----END PGP SIGNATURE-----