use dns package from sigsum-gov0.4.0

Issue: #26

1 files changed, 0 insertions, 39 deletions

diff --git a/pkg/dns/dns.go b/pkg/dns/dns.go
deleted file mode 100644
index 5baccc3..0000000
--- a/pkg/dns/dns.go
+++ /dev/null
@@ -1,39 +0,0 @@
-package dns
-
-import (
-	"context"
-	"fmt"
-	"net"
-
-	"git.sigsum.org/sigsum-go/pkg/hex"
-	"git.sigsum.org/sigsum-go/pkg/types"
-)
-
-// Verifier can verify that a domain name is aware of a public key
-type Verifier interface {
-	Verify(ctx context.Context, name string, key *types.PublicKey) error
-}
-
-// DefaultResolver implements the Verifier interface with Go's default resolver
-type DefaultResolver struct {
-	resolver net.Resolver
-}
-
-func NewDefaultResolver() Verifier {
-	return &DefaultResolver{}
-}
-
-func (dr *DefaultResolver) Verify(ctx context.Context, name string, key *types.PublicKey) error {
-	rsp, err := dr.resolver.LookupTXT(ctx, name)
-	if err != nil {
-		return fmt.Errorf("domain name look-up failed: %v", err)
-	}
-
-	want := hex.Serialize(types.HashFn(key[:])[:])
-	for _, got := range rsp {
-		if got == want {
-			return nil
-		}
-	}
-	return fmt.Errorf("%q is not aware of key hash %q", name, want)
-}