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Title: Sign files Post by: gimme_bottles on March 06, 2014, 04:51:28 PM Hi,
I am looking for a way to sign the content of (binary) files with my private keys. Almost every client can sign text messages, but I haven't found a solution for signing files. Any ideas or hints on existing solutions? Title: Re: Sign files Post by: hobbes on March 06, 2014, 07:30:32 PM You could hash the file and then sign the hash.
It's should be relatively easy with pybitcointools or on linux command line: shasum -a 256 yourfile Then you can use bitcoind or bitcoin-qt to sign. Title: Re: Sign files Post by: ning on March 08, 2014, 01:23:33 PM Hi, I am looking for a way to sign the content of (binary) files with my private keys. Almost every client can sign text messages, but I haven't found a solution for signing files. Any ideas or hints on existing solutions? Internally, the clients actually only sign the hash digest of the text message we enter:) Title: Re: Sign files Post by: cranial.nerve on March 11, 2014, 10:40:48 PM What a problem with gpg - OpenPGP encryption and signing tool
Code: gpg --help Code: man gpg Quote -s Make a signature. This command may be combined with --encrypt (for a signed and encrypted message), --symmetric (for a signed and symmetrically encrypted message), or --encrypt and --symmetric together (for a signed message that may be decrypted via a secret key or a passphrase). The key to be used for signing is chosen by default or can be set with the --local-user and --default-key options. Almost every secure focused distributive iso signed, see for example Tails: https://tails.boum.org/torrents/files/tails-i386-0.22.1.iso.sig However, Debian sign hashes http://cdimage.debian.org/debian-cd/7.4.0/amd64/jigdo-bd/MD5SUMS.sign |