private boolean establishKeyMaterial() {
try {
int mac_cs_key_len = MAC.getKeyLen(kxs.np.mac_algo_client_to_server);
int enc_cs_key_len = BlockCipherFactory.getKeySize(kxs.np.enc_algo_client_to_server);
int enc_cs_block_len = BlockCipherFactory.getBlockSize(kxs.np.enc_algo_client_to_server);
int mac_sc_key_len = MAC.getKeyLen(kxs.np.mac_algo_server_to_client);
int enc_sc_key_len = BlockCipherFactory.getKeySize(kxs.np.enc_algo_server_to_client);
int enc_sc_block_len = BlockCipherFactory.getBlockSize(kxs.np.enc_algo_server_to_client);
km =
KeyMaterial.create(
"SHA1",
kxs.H,
kxs.K,
sessionId,
enc_cs_key_len,
enc_cs_block_len,
mac_cs_key_len,
enc_sc_key_len,
enc_sc_block_len,
mac_sc_key_len);
} catch (IllegalArgumentException e) {
return false;
}
return true;
}