diff --git a/sodium/crypto_sign.go b/sodium/crypto_sign.go
index 899e33b..344a885 100644
--- a/sodium/crypto_sign.go
+++ b/sodium/crypto_sign.go
@@ -44,6 +44,29 @@ func Sign(sealedMessageOut []byte, message []byte, sk []byte) int {
 		(*C.uchar)(&sk[0])))
 }
 
+func SignDetached(detachedSealOut []byte, message []byte, sk []byte) int {
+	checkSize(detachedSealOut, SignBytes(), "signature output")
+	checkSize(sk, SignSecretKeyBytes(), "secret key")
+
+	return int(C.crypto_sign_detached(
+		(*C.uchar)(&detachedSealOut[0]),
+		nil,
+		(*C.uchar)(&message[0]),
+		(C.ulonglong)(len(message)),
+		(*C.uchar)(&sk[0])))
+}
+
+func SignVerifyDetached(sig []byte, message []byte, pk []byte) int {
+	checkSize(sig, SignBytes(), "signature input")
+	checkSize(pk, SignPublicKeyBytes(), "public key")
+
+	return int(C.crypto_sign_verify_detached(
+		(*C.uchar)(&sig[0]),
+		(*C.uchar)(&message[0]),
+		(C.ulonglong)(len(message)),
+		(*C.uchar)(&pk[0])))
+}
+
 func SignOpen(messageOut []byte, sealedMessage []byte, pk []byte) int {
 	checkSize(messageOut, len(sealedMessage)-SignBytes(), "message output")
 	checkSize(pk, SignPublicKeyBytes(), "public key")
diff --git a/sodium/crypto_sign_test.go b/sodium/crypto_sign_test.go
index b90960f..57c423f 100644
--- a/sodium/crypto_sign_test.go
+++ b/sodium/crypto_sign_test.go
@@ -36,6 +36,13 @@ func TestSignAndVerify(t *testing.T) {
 			t.Fatalf("bad result signing: %v", ret)
 		}
 
+		// detached sign the message
+		signed_detached := make([]byte, SignBytes())
+		ret = SignDetached(signed_detached, msg, Sk)
+		if ret != 0 {
+			t.Fatalf("bad result signing detached: %v", ret)
+		}
+
 		// verify message
 		msg2 := make([]byte, len(msg))
 		ret = SignOpen(msg2, signed, Pk)
@@ -46,6 +53,12 @@ func TestSignAndVerify(t *testing.T) {
 			t.Fatalf("different unsealed message")
 		}
 
+		// verify detached
+		ret = SignVerifyDetached(signed_detached, msg, Pk)
+		if ret != 0 {
+			t.Fatalf("bad result verifying detached: %v", ret)
+		}
+
 		// try corrupting the message at various points
 		corruptedCopy := make([]byte, len(signed))
 		for c := 0; c < len(signed); c += 100 {