diff --git a/xmlenc/fuzz.go b/xmlenc/fuzz.go
index ae23bdf3..1c602b01 100644
--- a/xmlenc/fuzz.go
+++ b/xmlenc/fuzz.go
@@ -2,39 +2,12 @@ package xmlenc
 
 import (
 	"crypto/rsa"
-	"crypto/x509"
-	"encoding/pem"
 
 	"github.com/beevik/etree"
 )
 
-var testKey = func() *rsa.PrivateKey {
-	//nolint:gosec
-	const keyStr = `-----BEGIN RSA PRIVATE KEY-----
-MIICXQIBAAKBgQDkXTUsWzRVpUHjbDpWCfYDfXmQ/q4LkaioZoTpu4ut1Q3eQC5t
-gD14agJhgT8yzeY5S/YNlwCyuVkjuFyoyTHFX2IOPpz7jnh4KnQ+B1IH9fY/+kmk
-zHJgxSUDJsdUMPgGpKt5hnEn7ziXAWXLc2udFbnHwhi9TXXwRHGi9wZ4YwIDAQAB
-AoGBALNTnlXeqRI4W61DZ+v4ln/XIIeD9xiOoWrcVrNU2zL+g41ryQmkEqFkXcpD
-vGUg2xFTXTz+v0WZ1y39sIW6uKFRYUfaNsF6iVfGAyx1VWK/jgtPnCWDQy26Eby0
-BqpbZRy1a6MLYVEG/5bvZE01CDV4XttpTrNX91WWcYGduJxBAkEA6ED1ZOqIzBpu
-c2KAo+bWmroCH8+cSDk0gVq6bnRB+EEhRCmo/VgvndWLxfexdGmDIOAIisB06N5a
-GzBSCaEY/QJBAPu2cNvuuBNLwrlxPCwOEpIHYT4gJq8UMtg6O6N+u++nYCGhK6uo
-VCmrKY+UewyNIcsLZF0jsNI2qJjiU1vQxN8CQQDfQJnigMQwlfO3/Ga1po6Buu2R
-0IpkroB3G1R8GkrTrR+iGv2zUdKrwHsUOC2fPlFrB4+OeMOomRw6aG9jjDStAkB1
-ztiZhuvuVAoKIv5HnDqC0CNqIUAZtzlozDB3f+xT6SFr+/Plfn4Nlod4JMVGhZNo
-ZaeOlBLBAEX+cAcVtOs/AkBicZOAPv84ABmFfyhXhYaAuacaJLq//jg+t+URUOg+
-XZS9naRmawEQxOkZQVoMeKgvu05+V4MniFqdQBINIkr5
------END RSA PRIVATE KEY-----`
-	b, _ := pem.Decode([]byte(keyStr))
-	k, err := x509.ParsePKCS1PrivateKey(b.Bytes)
-	if err != nil {
-		panic(err)
-	}
-	return k
-}()
-
 // Fuzz is the go-fuzz fuzzing function
-func Fuzz(data []byte) int {
+func Fuzz(testKey *rsa.PrivateKey, data []byte) int {
 	doc := etree.NewDocument()
 	if err := doc.ReadFromBytes(data); err != nil {
 		return 0
diff --git a/xmlenc/fuzz_test.go b/xmlenc/fuzz_test.go
index da3af637..ffb96bbe 100644
--- a/xmlenc/fuzz_test.go
+++ b/xmlenc/fuzz_test.go
@@ -9,6 +9,31 @@ import (
 	"strings"
 )
 
+var testKey = func() *rsa.PrivateKey {
+	//nolint:gosec
+	const keyStr = `-----BEGIN RSA PRIVATE KEY-----
+MIICXQIBAAKBgQDkXTUsWzRVpUHjbDpWCfYDfXmQ/q4LkaioZoTpu4ut1Q3eQC5t
+gD14agJhgT8yzeY5S/YNlwCyuVkjuFyoyTHFX2IOPpz7jnh4KnQ+B1IH9fY/+kmk
+zHJgxSUDJsdUMPgGpKt5hnEn7ziXAWXLc2udFbnHwhi9TXXwRHGi9wZ4YwIDAQAB
+AoGBALNTnlXeqRI4W61DZ+v4ln/XIIeD9xiOoWrcVrNU2zL+g41ryQmkEqFkXcpD
+vGUg2xFTXTz+v0WZ1y39sIW6uKFRYUfaNsF6iVfGAyx1VWK/jgtPnCWDQy26Eby0
+BqpbZRy1a6MLYVEG/5bvZE01CDV4XttpTrNX91WWcYGduJxBAkEA6ED1ZOqIzBpu
+c2KAo+bWmroCH8+cSDk0gVq6bnRB+EEhRCmo/VgvndWLxfexdGmDIOAIisB06N5a
+GzBSCaEY/QJBAPu2cNvuuBNLwrlxPCwOEpIHYT4gJq8UMtg6O6N+u++nYCGhK6uo
+VCmrKY+UewyNIcsLZF0jsNI2qJjiU1vQxN8CQQDfQJnigMQwlfO3/Ga1po6Buu2R
+0IpkroB3G1R8GkrTrR+iGv2zUdKrwHsUOC2fPlFrB4+OeMOomRw6aG9jjDStAkB1
+ztiZhuvuVAoKIv5HnDqC0CNqIUAZtzlozDB3f+xT6SFr+/Plfn4Nlod4JMVGhZNo
+ZaeOlBLBAEX+cAcVtOs/AkBicZOAPv84ABmFfyhXhYaAuacaJLq//jg+t+URUOg+
+XZS9naRmawEQxOkZQVoMeKgvu05+V4MniFqdQBINIkr5
+-----END RSA PRIVATE KEY-----`
+	b, _ := pem.Decode([]byte(keyStr))
+	k, err := x509.ParsePKCS1PrivateKey(b.Bytes)
+	if err != nil {
+		panic(err)
+	}
+	return k
+}()
+
 func TestPastFuzzingFailures(t *testing.T) {
 	entries, err := io.ReadDir("crashers")
 	if err != nil {
@@ -28,6 +53,6 @@ func TestPastFuzzingFailures(t *testing.T) {
 			t.Errorf("%s: %s", entry.Name(), err)
 			return
 		}
-		Fuzz(data)
+		Fuzz(testKey, data)
 	}
 }