Java application core shows that arcfour (RC4) being used to cipher but a NULL pointer has been passed as a key (first argument in arfour_crypt() is NULL). Why is the RC4 key not properly initialized.

Stack: [0xb2680000,0xb2700000], sp=0xb26fe028, free space=504k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
C [pkcs11_softtoken.so.1+0x38370]
C [pkcs11_softtoken.so.1+0x1f0bc]
C [pkcs11_softtoken.so.1+0x16360] C_EncryptUpdate+0x114
C [libj2pkcs11.so+0x59a8] Java_sun_security_pkcs11_wrapper_PKCS11_C_1EncryptUpdate+0x188
J sun.security.pkcs11.wrapper.PKCS11.C_EncryptUpdate(JJ[BIIJ[BII)I
J sun.security.pkcs11.P11Cipher.engineUpdate([BII[BI)I
J com.sun.net.ssl.internal.ssl.SSLSocketImpl.writeRecord(Lcom/sun/net/ssl/internal/ssl/OutputRecord;)V
j com.sun.net.ssl.internal.ssl.SSLSocketImpl.sendAlert(BB)V+222
j com.sun.net.ssl.internal.ssl.SSLSocketImpl.fatal(BLjava/lang/String;Ljava/lang/Throwable;)V+82
j com.sun.net.ssl.internal.ssl.SSLSocketImpl.fatal(BLjava/lang/Throwable;)V+4
j com.sun.net.ssl.internal.ssl.SSLSocketImpl.handleException(Ljava/lang/Exception;Z)V+112
j com.sun.net.ssl.internal.ssl.SSLSocketImpl.handleException(Ljava/lang/Exception;)V+3
J com.sun.net.ssl.internal.ssl.AppInputStream.read([BII)I
j java.io.BufferedInputStream.fill()V+175
J java.io.BufferedInputStream.read()I
j java.io.DataInputStream.readByte()B+4
J sirrus.util.io.mux.MuxTransportManager$1.run()V
v ~StubRoutines::call_stub
V [libjvm.so+0x1347c4]
V [libjvm.so+0x477150]
V [libjvm.so+0x1d1bc0]
V [libjvm.so+0x1e4edc]
V [libjvm.so+0x728b5c]
V [libjvm.so+0x6709e0]