Eelco Dolstra 0fdf4da0e9 Support cryptographically signed binary caches ... NAR info files in binary caches can now have a cryptographic signature that Nix will verify before using the corresponding NAR file. To create a private/public key pair for signing and verifying a binary cache, do: $ openssl genrsa -out ./cache-key.sec 2048 $ openssl rsa -in ./cache-key.sec -pubout > ./cache-key.pub You should also come up with a symbolic name for the key, such as "cache.example.org-1". This will be used by clients to look up the public key. (It's a good idea to number keys, in case you ever need to revoke/replace one.) To create a binary cache signed with the private key: $ nix-push --dest /path/to/binary-cache --key ./cache-key.sec --key-name cache.example.org-1 The public key (cache-key.pub) should be distributed to the clients. They should have a nix.conf should contain something like: signed-binary-caches = * binary-cache-public-key-cache.example.org-1 = /path/to/cache-key.pub If all works well, then if Nix fetches something from the signed binary cache, you will see a message like: *** Downloading ‘http://cache.example.org/nar/7dppcj5sc1nda7l54rjc0g5l1hamj09j-subversion-1.7.11’ (signed by ‘cache.example.org-1’) to ‘/nix/store/7dppcj5sc1nda7l54rjc0g5l1hamj09j-subversion-1.7.11’... On the other hand, if the signature is wrong, you get a message like NAR info file `http://cache.example.org/7dppcj5sc1nda7l54rjc0g5l1hamj09j.narinfo' has an invalid signature; ignoring Signatures are implemented as a single line appended to the NAR info file, which looks like this: Signature: 1;cache.example.org-1;HQ9Xzyanq9iV...muQ== Thus the signature has 3 fields: a version (currently "1"), the ID of key, and the base64-encoded signature of the SHA-256 hash of the contents of the NAR info file up to but not including the Signature line. Issue #75.		2014-01-08 15:42:53 +01:00
..
Config.pm.in	Support cryptographically signed binary caches	2014-01-08 15:42:53 +01:00
CopyClosure.pm	Fixing the pv position regarding compression	2013-05-03 11:08:51 +02:00
Crypto.pm	Support cryptographically signed binary caches	2014-01-08 15:42:53 +01:00
GeneratePatches.pm	* Install NixManifest.pm, NixConfig.pm and GeneratePatches.pm under	2011-10-10 21:11:08 +00:00
Manifest.pm	Support cryptographically signed binary caches	2014-01-08 15:42:53 +01:00
SSH.pm	build-remote.pl: Properly close the SSH connection between attempts	2013-05-10 02:38:50 +02:00
Store.pm	Fix annoying Perl 5.16 warnings	2013-03-08 00:27:32 +01:00
Store.xs	perl: Call loadConfFile() in doInit to avoid screwing sqlite journal mode.	2013-12-20 13:59:52 +01:00
Utils.pm	Give a better error message if writeFile fails due to permission issues	2012-12-20 12:22:13 +01:00