No subject

0x62)

Can anyone point me to a resource for computing parameters with a valid MAC?

Thanks for your attention,

Rupert

--089e013d1f28c0d5d004d784db04
Content-Type: text/html; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">Good Afternoon,<div><br></div><div>I am trying to perform =
USIM/3G authentication using=A0osmo-sim-auth and ran into the same problem =
as Stefanos:</div><div><a href=3D"http://lists.osmocom.org/pipermail/simtra=
ce/2012-November/000406.html">http://lists.osmocom.org/pipermail/simtrace/2=
012-November/000406.html</a></div>
<div><br></div><div>I followed Benoit's advice to view the details as f=
ollows (using the inputs from the web page):</div><div><br><div><div>> r=
and_bin =3D stringToByte(a2b_hex('00000000000000000000000000000000'=
))</div>
<div>> autn_bin =3D stringToByte(a2b_hex('ec9320c2c2000000e1dd22c1ad=
3e2d3d'))</div></div><div>> u.authenticate(RAND=3Drand_bin, AUTN=3Da=
utn_bin,ctx=3D'3G')<br></div><div>> u.coms()<br></div><div><br><=
/div>
<div><pre style=3D"margin-top:0px;margin-bottom:0px;padding:0px;border:0px;=
font-family:monospace,sans-serif;font-size:14px;line-height:17px;vertical-a=
lign:baseline;white-space:pre-wrap;color:rgb(0,0,0)">['INTERNAL AUTHENT=
ICATE apdu: 00 88 00 81 22 10 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 =
00 10 EC 93 20 C2 C2 00 00 00 E1 DD 22 C1 AD 3E 2D 3D',
 'sw1, sw2: 98 62 - undefined status',
 (152, 98),
 []]</pre></div><div><br></div></div><div style>From=A0TS 31.102, section 7=
.3.1 it looks like this means a MAC failure (0x98 0x62)</div><div style><br=
></div><div style>Can anyone point me to a resource for computing parameter=
s with a valid MAC?</div>
<div style><br></div><div style>Thanks for your attention,</div><div style>=
<br></div><div style>Rupert</div></div>

--089e013d1f28c0d5d004d784db04--