diff --git a/tests/testdata/testkey_v4.txt b/tests/testdata/testkey_v4.txt
new file mode 100644
index 0000000..532cbd5
--- /dev/null
+++ b/tests/testdata/testkey_v4.txt
@@ -0,0 +1 @@
+v4 {64,0xc9bd1f21,{293133087,3210546773,865313125,250921607,3158780490,943703457,1242806226,2986289859,2942743769,2457906415,2719374299,1783459420,149579627,3081531591,3440738617,2788543742,2758457512,1146764939,3699497403,2446203424,1744968926,1159130537,2370028300,3978231572,3392699980,1487782451,1180150567,2841334302,3753960204,961373345,3333628321,748825784,2978557276,1566596926,1613056060,2600292737,1847226629,50398611,1890374404,2878700735,2286201787,1401186359,619285059,731930817,2340993166,1156490245,2992241729,151498140,318782170,3480838990,2100383433,4223552555,3628927011,4247846280,1759029513,4215632601,2719154626,3490334597,1751299340,3487864726,3668753795,4217506054,3748782284,3150295088},{1772626313,445326068,3477676155,1758201194,2986784722,491035581,3922936562,702212696,2979856666,3324974564,2488428922,3056318590,1626954946,664714029,398585816,3964097931,3356701905,2298377729,2040082097,3025491477,539143308,3348777868,2995302452,3602465520,212480763,2691021393,1307177300,704008044,2031136606,1054106474,3838318865,2441343869,1477566916,700949900,2534790355,3353533667,336163563,4106790558,2701448228,1571536379,1103842411,3623110423,1635278839,1577828979,910322800,715583630,138128831,1017877531,2289162787,447994798,1897243165,4121561445,4150719842,2131821093,2262395396,3305771534,980753571,3256525190,3128121808,1072869975,3507939515,4229109952,118381341,2209831334}}