int main()
{
printf("\n\nEnter the values of a and b - ");
scanf("%d%d",&a,&b);
printf("\nEnter the prime number - ");
scanf("%d",&p);
printf("\nEnter the values of xp and yp - ");
scanf("%d%d",&xp,&yp);
na = rand()%10+2;
printf("\nValue of Na - %d",na);
nb = rand()%10+2;
printf("\nValue of Nb - %d",nb);
int public_key[4], private_key[4];
publickey(na);
public_key[0] = xq;
public_key[1] = yq;
printf("\nPublic key of A - (%d ,%d)\n\n",public_key[0],public_key[1]);
publickey(nb);
public_key[2] = xq;
public_key[3] = yq;
printf("Public key of B - (%d ,%d)\n\n",public_key[2],public_key[3]);
secretkey(public_key[2], public_key[3], na);
private_key[0] = xq;
private_key[1] = yq;
printf("\nShared Secret key of A - (%d ,%d)\n\n",private_key[0],private_key[1]);
secretkey(public_key[0], public_key[1], nb);
private_key[2] = xq;
private_key[3] = yq;
printf("\nShared Secret key of B - (%d ,%d)\n\n",private_key[2],private_key[3]);
return 0;
}
int main()
{
int p,g,a,b,t;
unsigned long long int A, B, secret1, secret2;
printf("*********Klasik Diffie Hellman Anahtar Degisimi*********\n\n");
printf("NOT : 'g' bir tamsayi, 'p' bir asal sayi ve 'p'-1>'g' olmalidir. \n\n");
tekrar2:
printf("Lutfen ortak 'g' taban degerini giriniz : ");
scanf("%d", &g);
tekrar:
printf("Lutfen ortak 'p' mod degerini giriniz : ");
scanf("%d", &p);
t=asal(p);
if(t==1)
goto tekrar;
t=aralarindaasal(g,p);
if(t==1)
goto tekrar2;
printf("\n\tg : %d\n\tp : %d\n", g,p);
printf("\nClient gizli degerini giriniz : ");
scanf("%d", &a);
printf("Server gizli degerini giriniz : ");
scanf("%d", &b);
printf("\n\ta : %llu\n\tb : %llu\n", a,b);
A=publickey(g,a,p);
B=publickey(g,b,p);
printf("\nPublic Deger Hesaplama=> A : g^a mod p\n");
printf(" B : g^b mod p\n");
printf("\nClient public degeri => A : %d^%d mod %d\n", g,a,p);
printf("Server public degeri => B : %d^%d mod %d\n\n", g,b,p);
printf("\tA : %llu\n\tB : %llu\n\n", A,B);
printf("Gizli Deger Hesaplama => Client : B^a mod p = g^ba mod p\n");
printf(" Server : A^b mod p = g^ab mod p\n\n");
printf("Client gizli degeri => s1 : %llu^%d mod %d\n", B,a,p);
printf("Server gizli degeri => s2 : %llu^%d mod %d", A,b,p);
secret1=secretkey(B,a,p);
secret2=secretkey(A,b,p);
printf("\n\n\ts1 : %llu\n\ts2 : %llu\n", secret1,secret2);
if(secret1!=secret2)
printf("\n\n's' degerleri esit cikmadi. Islemlerde bir sorun olabilir. \nKontrol ettikten sonra, tekrar deneyiniz.\n\n");
else
printf("\nOrtak gizli deger => s : %llu",secret1);
printf("\n\nClient'in Bildigi Degerler : g, p, a, A, B, s\n");
printf("Server'in Bildigi Degerler : g, p, b, B, A, s");
printf("\n\n\n\t*******Tolga Akkapulu*******\n\thttp://www.tolgaakkapulu.com");
getch();
}
void FreenetMessageInserter::StartPrivateInsert(const int localidentityid, const int recipientidentityid, const std::string &message)
{
RSAKeyPair rsa;
std::string idstr("");
std::string publickey("");
std::string rsapublickey("");
std::string data("");
std::string datalengthstr("");
DateTime now;
FCPv2::Message mess("ClientPut");
LoadLocalIdentityPrivateKey(localidentityid);
SQLite3DB::Statement st=m_db->Prepare("SELECT PublicKey, RSAPublicKey FROM tblIdentity WHERE IdentityID=?;");
st.Bind(0,recipientidentityid);
st.Step();
if(st.RowReturned())
{
st.ResultText(0,publickey);
st.ResultText(1,rsapublickey);
}
if(publickey!="" && rsapublickey!="" && rsa.SetFromEncodedPublicKey(rsapublickey))
{
if(m_identitykeys[localidentityid]!="")
{
std::string indexstr("0");
FreenetMessage fm;
fm["type"]="privatemessage";
fm["recipient"]=publickey;
fm["sentdate"]=now.Format("%Y-%m-%d %H:%M:%S");
rsa.Encrypt(message,fm.Body());
data=fm.GetMessageText();
StringFunctions::Convert(localidentityid,idstr);
StringFunctions::Convert(data.size(),datalengthstr);
StringFunctions::Convert(GetNextMessageIndex(localidentityid,now),indexstr);
st=m_db->Prepare("INSERT INTO tblInsertedMessageIndex(LocalIdentityID,Date,MessageIndex) VALUES(?,?,?);");
st.Bind(0,localidentityid);
st.Bind(1,now.Format("%Y-%m-%d"));
st.Bind(2,indexstr);
st.Step();
mess["URI"]="SSK@"+m_identitykeys[localidentityid].substr(4)+m_messagebase+"|"+now.Format("%Y-%m-%d")+"|Message-"+indexstr;
mess["Identifier"]=m_fcpuniqueidentifier+"|"+idstr+"|"+now.Format("%Y-%m-%d")+"|"+indexstr+"|"+mess["URI"];
mess["RealTimeFlag"]="true";
mess["UploadFrom"]="direct";
mess["PriorityClass"]=m_insertpriority;
mess["ExtraInsertsSingleBlock"]="0";
mess["DataLength"]=datalengthstr;
mess["Metadata.ContentType"]="";
m_fcp->Send(mess);
m_fcp->Send(std::vector<char>(data.begin(),data.end()));
m_log->Debug("FreenetMessageInserter::StartInsert started insert of private message "+mess["Identifier"]);
}
}
}
