-----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-mongodb-14.1-jessie-amd64-xen.tar.bz2.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-mongodb-14.1-jessie-amd64-xen.tar.bz2 a0be0d9704146f9c2dce2b2269df7f60 $ sha1sum turnkey-mongodb-14.1-jessie-amd64-xen.tar.bz2 e42baf10c9998f765e89b7c129fbddf362d021ac -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXDJn2AAoJEIXCXpWhbrlNCmAH/RLy/rqa//OySwH+389FRNmD tXQGFwBhBz9n8I12u1cSJGYSGAHI0v7fdzA8e1OJGAtVSMbzm+1fHqfkvQY+8X6A xD49vQOJxQ3ub3qNvTvAiISTwfOs/3ZXNVF6UeQNJT5dxGJaUJd27cbYuc0Nj3yk u6A/bb4XBSpBOKhn9zRRLizJKdQCzpAj3vaJQSNiJvuga+xiMAwCkDe8v46LBFLq fTSjAM0067GoZsvELLUsiv3CIhx2+DqsMmVgHifaOODsAj5wjEa3InhOsX8ugDHq 2OApdohUQ5ubtjbknop+uX3XEK5OxWEzdakLAJbuozUo3O+hMRctByeRuVuxUY4= =hdDH -----END PGP SIGNATURE-----