1 files changed, 0 insertions, 22 deletions
diff --git a/middleware/dnssec/cache.go b/middleware/dnssec/cache.go
deleted file mode 100644
index ea95b73b4..000000000
--- a/middleware/dnssec/cache.go
+++ /dev/null
@@ -1,22 +0,0 @@
-package dnssec
-
-import (
-	"hash/fnv"
-
-	"github.com/miekg/dns"
-)
-
-// hash serializes the RRset and return a signature cache key.
-func hash(rrs []dns.RR) uint32 {
-	h := fnv.New32()
-	buf := make([]byte, 256)
-	for _, r := range rrs {
-		off, err := dns.PackRR(r, buf, 0, nil, false)
-		if err == nil {
-			h.Write(buf[:off])
-		}
-	}
-
-	i := h.Sum32()
-	return i
-}