-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Two steps are required to cryptographically verify image integrity. 1. By verifying the integrity of this signature file, you can be sure that the checksums included in this file are valid. $ gpg --keyserver hkp://pool.sks-keyservers.net --recv-keys 0xA16EB94D $ gpg --list-keys 0xA16EB94D pub 2048R/A16EB94D 2008-08-15 [expires: 2023-08-12] uid Turnkey Linux Release Key $ gpg --verify debian-8-turnkey-typo3_14.1-1_amd64.tar.gz.sig gpg: Good signature from "Turnkey Linux Release Key" 2. By calculating the image checksum and validating the hashed value is the same as listed below, you can be sure the image was not corrupted in transit or tampered with. $ md5sum debian-8-turnkey-typo3_14.1-1_amd64.tar.gz 9cab5eb4838a432827d37f068059a15b $ sha1sum debian-8-turnkey-typo3_14.1-1_amd64.tar.gz d338b5dae4d12f85a7ff88881c9d17bb47f386a4 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXDJnvAAoJEIXCXpWhbrlN1ucH/2d7h1HL51VthZsL7mIcwkSu iGU/Jm7Ij5mgb2SWkD7c3ph1iaFkuw85wC47cBX2lgn2Q+RvjMllnhEZoXk9CsWm uSaR+pVHCID86IoHRSHC3/UmC87gVIJjOMwXFd+MJXxKPeaazTiW+P8HvccqlGpC TL5iZjtvy9utZ7NseRvYNKQdwWhL6Mi3KeK3ySeyACEbV78CI8B7WJuAtmBxQXhK kp2Btw8TUvY48CgZwO1UxgFO1REzbLaw9ocTwoDZ0qIJ095v8v85KyObSbjUUhSG EERym3X6QGbju7QQGPAKQzYC2HtBm2vlxK/iO0RjkwUyAUtCj8X/O495ZtbNNzo= =P1Y4 -----END PGP SIGNATURE-----