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Use libsodium instead of OpenSSL for binary cache signing

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Sodium's Ed25519 signatures are much shorter than OpenSSL's RSA
signatures. Public keys are also much shorter, so they're now
specified directly in the nix.conf option ‘binary-cache-public-keys’.

The new command ‘nix-store --generate-binary-cache-key’ generates and
prints a public and secret key.
This commit is contained in:
Eelco Dolstra 2015-02-04 16:43:32 +01:00
parent 0d1dafa0c4
commit e0def5bc4b
15 changed files with 196 additions and 91 deletions
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19
perl/lib/Nix/Manifest.pm
View file

@ -8,8 +8,9 @@ use Cwd;
use File::stat;
use File::Path;
use Fcntl ':flock';
use MIME::Base64;
use Nix::Config;
use Nix::Crypto;
use Nix::Store;
our @ISA = qw(Exporter);
our @EXPORT = qw(readManifest writeManifest updateManifestDB addPatch deleteOldManifests parseNARInfo);
@ -440,22 +441,20 @@ sub parseNARInfo {
}
my ($sigVersion, $keyName, $sig64) = split ";", $sig;
$sigVersion //= 0;
if ($sigVersion != 1) {
if ($sigVersion != 2) {
warn "NAR info file ‘$location’ has unsupported version $sigVersion; ignoring\n";
return undef;
}
return undef unless defined $keyName && defined $sig64;
my $publicKeyFile = $Nix::Config::config{"binary-cache-public-key-$keyName"};
if (!defined $publicKeyFile) {
my $publicKey = $Nix::Config::binaryCachePublicKeys{$keyName};
if (!defined $publicKey) {
warn "NAR info file ‘$location’ is signed by unknown key ‘$keyName’; ignoring\n";
return undef;
}
if (! -f $publicKeyFile) {
die "binary cache public key file ‘$publicKeyFile’ does not exist\n";
return undef;
}
if (!isValidSignature($publicKeyFile, $sig64, $signedData)) {
warn "NAR info file ‘$location’ has an invalid signature; ignoring\n";
if (!checkSignature($publicKey, decode_base64($sig64), $signedData)) {
warn "NAR info file ‘$location’ has an incorrect signature; ignoring\n";
return undef;
}
$res->{signedBy} = $keyName;