private bool verifyuser(ucommit ucom)
{
rsakey upbkey = ucom.getcert().getukey();
string mess = ucom.getvendor() + "," + ucom.getcert().ToString() + "," + ucom.getc0().ToString() + "," + ucom.getD().ToString() + "," + ucom.getinfo();
BigInteger messh = hashf.hash(mess);
return(rsa.verifySig(messh, ucom.getsigU(), upbkey));
}
public void comconfirm(bool c, vendor v)
{
if (c == true)
{
utb.AppendText("\tComitment to vendor: " + v.name + " confirmed !\n");
}
else
{
ucomm = null;
utb.AppendText("\tComitment to vendor: " + v.name + " failed !\n");
}
commited = c;
}
private bool verifyuser(ucommit ucom)
{
foreach (var it in clist)
{
if (it.getuser() == ucom.getcert().getuser())
{
rsakey upbkey = ucom.getcert().getukey();
string mess = ucom.getvendor() + "," + ucom.getcert().ToString() + "," + ucom.getc0().ToString() + "," + ucom.getD().ToString() + "," + ucom.getinfo();
BigInteger messh = hashf.hash(mess);
return(rsa.verifySig(messh, ucom.getsigU(), upbkey));
}
}
return(false);
}
public void sendcommit(vendor v)
{
genpaywords(pwnr + 1);
currentpw = 0;
utb.AppendText("Commitment : Generated 1$ paywords(" + pwnr + ") !\n");
string info = "adinfo";
string sigstr = v.name + "," + cert.ToString() + "," + pwords[0].ToString() + "," + DateTime.Now.ToString() + "," + info;
BigInteger sigh = hashf.hash(sigstr);
BigInteger sigU = rsa.createSig(sigh, upvk);
ucommit cmes = new ucommit(v.name, cert, pwords[0], DateTime.Now, info, sigU);
ucomm = cmes;
utb.AppendText("\tSent comitment to " + v.name + " !\n");
v.getcommit(cmes, this);
}
public void getcommit(ucommit ucom, user u)
{
vtb.AppendText("Commitment request received from " + u.name + "! \n");
if (ucom.getD() < ucom.getcert().getexp())
{
if (verifyuser(ucom))
{
if (verifycert(ucom.getcert()))
{
vtb.AppendText("\tCommitment approved, message sent ! \n");
trust = true;
ucomm = ucom;
lastpay = new payment(ucom.getc0(), 0);
u.comconfirm(true, this);
if (!(cycleth.IsAlive == true))
{
cycleth.Start();
}
}
else
{
vtb.AppendText("\tCertificate Signature Invalid, message sent ! \n");
u.comconfirm(false, this);
}
}
else
{
vtb.AppendText("\tUser Signature Invalid, message sent ! \n");
u.comconfirm(false, this);
}
}
else
{
vtb.AppendText("\tCertificate expired, message sent ! \n");
u.comconfirm(false, this);
}
}
