-----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 turnkey-processmaker-14.1-jessie-i386.iso.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 turnkey-processmaker-14.1-jessie-i386.iso 2eba6a0e5a56b0b76dc614f4d51e0e99 $ sha1sum turnkey-processmaker-14.1-jessie-i386.iso 9bd66dabfaee7db5264cbdefc384b5ec213aa6e2 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXCkPzAAoJEIXCXpWhbrlNp0UH/Ag5/i7JLbHDF2bM2zvkaRGt a7V3mZOBG8xkl+SfkvDJmHa70R1no8ced1wpNkmQwwLfp0HrJFo2/+ZT0jcdOOJI 8mL3aZSarJUTCRKbdgGLeRgwoC4HikrmXPVgY2+Lpy0g9xtu9CGX1EpGl4FEWciL 4y4t+CWXj6XfqO+ojN4FhbitJ6LUXpFbZOSKVFjbuzKCZL88gKQhlnYeaC4ljrQg iQgA4W71lI2TZuKFUja+PgmZaLKKmvhSgNCAkl4hjSLyHCpmDdCnz6N6wDMEa3dZ 9Uh9/RDHkSChc8GZCtfU5ImgArDaCtadL65+RtO17S8rJdB2IU5HAbT0zgXt+2Q= =jLfg -----END PGP SIGNATURE-----