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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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50
tests/binary-cache.sh
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@ -87,3 +87,53 @@ rm $(grep -l "StorePath:.*dependencies-input-2" $cacheDir/*.narinfo)
nix-build --option binary-caches "file://$cacheDir" dependencies.nix -o $TEST_ROOT/result 2>&1 | tee $TEST_ROOT/log
grep -q "Downloading" $TEST_ROOT/log
# Create a signed binary cache.
clearCache
declare -a res=($(nix-store --generate-binary-cache-key test.nixos.org-1))
publicKey="${res[0]}"
secretKey="${res[1]}"
echo "$secretKey" > $TEST_ROOT/secret-key
res=($(nix-store --generate-binary-cache-key test.nixos.org-1))
badKey="${res[0]}"
res=($(nix-store --generate-binary-cache-key foo.nixos.org-1))
otherKey="${res[0]}"
nix-push --dest $cacheDir --key-file $TEST_ROOT/secret-key $outPath
# Downloading should fail if we don't provide a key.
clearStore
rm -f $NIX_STATE_DIR/binary-cache*
(! nix-store -r $outPath --option binary-caches "file://$cacheDir" --option signed-binary-caches '*' )
# And it should fail if we provide an incorrect key.
clearStore
rm -f $NIX_STATE_DIR/binary-cache*
(! nix-store -r $outPath --option binary-caches "file://$cacheDir" --option signed-binary-caches '*' --option binary-cache-public-keys "$badKey")
# It should succeed if we provide the correct key.
nix-store -r $outPath --option binary-caches "file://$cacheDir" --option signed-binary-caches '*' --option binary-cache-public-keys "$otherKey $publicKey"
# It should fail if we corrupt the .narinfo.
clearStore
for i in $cacheDir/*.narinfo; do
grep -v References $i > $i.tmp
mv $i.tmp $i
done
rm -f $NIX_STATE_DIR/binary-cache*
(! nix-store -r $outPath --option binary-caches "file://$cacheDir" --option signed-binary-caches '*' --option binary-cache-public-keys "$publicKey")