From 4a8846dfe9f62e8516cdb3f6ece471dcaaf502b0 Mon Sep 17 00:00:00 2001
From: Zach S-B <zach@thesbfam.com>
Date: Fri, 5 Nov 2021 16:14:18 +1100
Subject: [PATCH] v0

---
 Q2.class       | Bin 0 -> 670 bytes
 Q2.java        |  39 +++++++++++++++++++++++++++
 Q2Client.class | Bin 0 -> 986 bytes
 Q2Client.java  |  37 ++++++++++++++++++++++++++
 Q2Server.class | Bin 0 -> 1552 bytes
 Q2Server.java  |  39 +++++++++++++++++++++++++++
 Q2Tools.java   |  70 +++++++++++++++++++++++++++++++++++++++++++++++++
 7 files changed, 185 insertions(+)
 create mode 100644 Q2.class
 create mode 100644 Q2.java
 create mode 100644 Q2Client.class
 create mode 100644 Q2Client.java
 create mode 100644 Q2Server.class
 create mode 100644 Q2Server.java
 create mode 100644 Q2Tools.java

diff --git a/Q2.class b/Q2.class
new file mode 100644
index 0000000000000000000000000000000000000000..1d2c24195c19e718f038bdba1e05aef4a6fa0dfd
GIT binary patch
literal 670
zcma)4%TiiF5Iu7R2d-D}Ek4i-nt0JFsbZ6bmK!TsB;-M$bm3|kMjQhdY8Wj4C~G%r
zxyT3Pd$P9dp-f<zS#<a5?$gtCW_~|E{Q~d~2R;I<_*g|Qg*E5blT@I?{`lCyW(s+Z
zEgxxYbA%iPhUsG+YkR^l6_w5y5~sbEV#ro?tiBApO=TLQ*`Z9LD|F1T5?xfU#f>O;
zMBFadt<iD&$Ps7jR>&WpMgO(mulI&Vst?+cd98BjSOI2{;V1^!!7js|?6$(P3<p*i
z8xlBFw<;`u3X85etX1mD+$clsZ}665FF=ISf6z`lTE(`=usB}z{jF4et9x;PePkHC
zT7_Y5T>sj<R?;%ek5k`=vDIB#-)}4X4=hKe2?bu$M<fvKE@`=FqWV{#iPSgKlWH&^
z!o=l`E2Bh<Avx$M)u&m}N2h7FPx9K4uni-mLIE@M!tQt=$&n$OC6p)6$S3z7!0srZ
z>13xzNk-2-j|GZd>m^Y=@`Xou3sd(<oG&5y2<~9Y!JkM~5ANaLjmSCrHfbWbaa-VI
h*9foEs14*0lFefi+Y}YBNL3E+f+L+E@)AK0%P+1IjK=@~

literal 0
HcmV?d00001

diff --git a/Q2.java b/Q2.java
new file mode 100644
index 0000000..2c15008
--- /dev/null
+++ b/Q2.java
@@ -0,0 +1,39 @@
+public class Q2 {
+
+//Setup_Request: Hello
+
+//SETUP: Server's RSA public key
+
+//Client_Hello:IDc
+
+//Server_Hello: IDs , SID
+
+//Ephemeral DH exchange
+
+//Finished, check the shared key
+
+//Data exchange
+
+/**
+ * Opens the client and server in seperate terminals
+ * @param args
+ */
+public static void main(String[] args)
+{
+    // try
+    // { 
+    //  Runtime.getRuntime().exec("cmd /c start cmd.exe /K \"java Q2Server\"");
+    //  Thread.sleep(500); //Just to ensure the server has enough time to open
+    //  Runtime.getRuntime().exec("cmd /c start cmd.exe /K \"java Q2Client\"");
+    // }
+    // catch (Exception e)
+    // {
+    //     e.printStackTrace();
+    // }
+
+    Q2Tools toolbox = new Q2Tools();
+
+    toolbox.fastModularExpon(5, 117, 19);
+}
+
+}
\ No newline at end of file
diff --git a/Q2Client.class b/Q2Client.class
new file mode 100644
index 0000000000000000000000000000000000000000..031fe75f9f3df4a6a3756b91befc89ede9d94385
GIT binary patch
literal 986
zcmZuw>r&HD5dKatBn_!8Ek*De5U?#uk)nt#pjH{3siGF0>G&%RM+~G%r#<oV3ciTH
zakQP086Uv6@I@T=q*bWHpWW>3+i&-5e*XUc1HdXO8ZwxP;R<F|%xRd%RRviMQOrn@
zQ;=7&ph3m87}?hqEJ~xGLC2Dc8&WSzQIzhYf)y1v72INA9fq;$zWL59xLg!!o^`-Q
ziD9H{ySCV12xoJz7$OyKmop@)w#%RT%?5Apm<@+Kk)~<83=`SceGtcV_X;)9w%xsw
zEDX1O3dd{0v<{w_twEJm^Zd5Ow`>U!f4*FCZ0?FhNkhjZrWCB|xQ#UmzVKbbGWr<`
z?&v6?%%J`)(s2n>#O%Kj7-EiRna*3UBP8UyjtQJ)m<;l4ukgSW=C&_dz96>TZ0gv+
zrp&y{5PifQ$J22SWgYh=d^#u#hI{zI;w@o&G}eHX(chZ!#-w?64dEG<=epbyiww!*
z!tKUB`G#Dzj~&6Av?b4{K&HP!BKM5;H{eBY(QiKNW>8u($srn<?CHCoIK}^1K1yPb
zi<7g{TC%x+%}++C`_ur1`VU1UkovxD3;uFvi*{x?UWa3v&M!kZ%Mg+ar>`)5)02`s
zN7hBsjC3^L13L^7&yySpoDsxuAxM#_YXlJ@o%w=LD%?fn2+?{EBh`g2l;hGAB9tWW
zdK5`I@o~fnjE;h&g!x2_B+PpL2x>hQ8%zG`LHmZ$Bk1+~SB!QM@8L{!A(iMNN!Vk3
zXX-Qbs%$+@tq%i!ODG~uV3P4XaRpgP8uv1dI!DZN)OLw}(jpA3U<PH(QVdWK>L^I7
K1Y(dG!t@^yGSEi=

literal 0
HcmV?d00001

diff --git a/Q2Client.java b/Q2Client.java
new file mode 100644
index 0000000..f5b702f
--- /dev/null
+++ b/Q2Client.java
@@ -0,0 +1,37 @@
+import java.net.Socket;
+import java.io.*;  
+
+public class Q2Client {
+    
+    private Socket s;
+    
+    public static void main(String[] args)
+    {
+        System.out.println("Runing Client");
+        Q2Client client = new Q2Client();   
+        client.run();
+    }
+
+    public void run()
+    {
+        try 
+        {
+            s = new Socket("localhost", 4321);
+            
+            DataOutputStream dout=new DataOutputStream(s.getOutputStream());  
+            dout.writeUTF("Hello"); //Setup_Request
+            //dout.flush();  
+            
+            
+            
+            
+            dout.close();  
+            
+            s.close();  
+        } 
+        catch (Exception e) 
+        {
+            System.out.println("Client Socket failed to connect.");
+        }
+    }
+}
\ No newline at end of file
diff --git a/Q2Server.class b/Q2Server.class
new file mode 100644
index 0000000000000000000000000000000000000000..3f8f4ef28140c9dd6a2f4b16f0da541f310f8387
GIT binary patch
literal 1552
zcmaJ>*>V#{6g@4;8hJAEE@MJM6vu!pz)HwM904)NI5<dbG7tw|+M~t{l4evhEm!;}
zdCXg$Nd>zKSMdS)i+n}iQk>SvWjR)*RO;!z%em*CUjF*`?K=Qh@!UoZ3!^xP^BG*Q
zQNW^wqKy$OnBk&@OExmNJj%tAnU&1!a|>VCxPmWjWbu_5zMdl7vI+RkLOFwL7Oo2<
zqDbIW^_AR_C12@MU4=U;tOssW>9T;JcXGgcXis1Bd{5sHNEQ~K2&5`OLkWymJzw4H
zwzpKcA-7tzq}tN+1!fD+Vvv^fw@Y;$dj59VBqqZy-PyX9ZnGvk{Vcm4bVFCIc?Kf;
z@JdW-$&hsLA<kI1;oy6$(D|tA6DuD_Sh(rn7AgXn!z2fJoDs+kZP0+NI+(>N2e+~2
zU=F9LMlaS2N~==Kb-&ZqB&=lH!VeDaVBKW>=-@7@0u#4_Ku0>1otn}wgGMx-MlFMT
z4({WDgNLT}bPuoB`R!j^)zMzSp66rA`B>`w3(001c^%}9uwKiH)Dq#3QtxlQQm#H`
zs_#ZxwJBoIr6U(BOx_PDZ=W-_FfM=GEMRp^P>V!zh2dM1Dy*9wN=w&pCQe~-$UzuC
z61I0X1je?N9#D;X9ww5*fP>WL`lbKlFl8+&-gvyRCNOiDK6rL)JVIT-ZmTGg+v<8=
zuufYxRVDCUsh@iKC1;VAzUB!&Kdi-*T?>r3tsqhsHq8G0B(QL#zvu4+P1QfUag{ac
z>LA>;@H1tq20^pi5pdRhUxk&Hj3UL-zYdn}W5h@0j`SNX6)nVx<&$&<EXNWzb~|cF
z_}~qT4@<efVLjpc5Ea>K)jh4s7M=;5JJH`TZUSfjKMtSr#mVt`N$|(p)SK}x@tcG&
zH<sf^Tz$;1;CH0B5Am84K@*Vf8PgcWS$x8|30>}i0l7brm`d&;b%2r0ed>I157trY
z6jBV%@>Ltd1jaGLQJ6d5hxv{EBqM6Y17tQQC;r~Y=o{F@;-9eh@WC562gq)6<?LZ>
zpD!5UCu*#D=`AJ!){P^leuq;vRAy*;-Q&B03Z}`@bWnuNF-H=!Y<rH6^l4mX<IC)2
wh4NI`*(zyOG0zp)Y2qJLEKFy}Zk~n&KEqRfZ9+fBCY})B8?G~4U*-SX_sGY4;{X5v

literal 0
HcmV?d00001

diff --git a/Q2Server.java b/Q2Server.java
new file mode 100644
index 0000000..6e67888
--- /dev/null
+++ b/Q2Server.java
@@ -0,0 +1,39 @@
+import java.net.ServerSocket;
+import java.net.Socket;
+
+import java.io.*;  
+
+public class Q2Server {
+    
+    private ServerSocket ss;
+    private Socket s;
+    
+    public static void main(String[] args)
+    {
+        System.out.println("Runing Server");
+        Q2Server server = new Q2Server();
+        server.run();
+    }
+    public void run()
+    {
+        try 
+        {
+            ss = new ServerSocket(4321);
+            s = ss.accept();
+
+            DataInputStream dis=new DataInputStream(s.getInputStream());  
+            String  str=(String)dis.readUTF();  
+            System.out.println("message= "+str);  
+            
+            ss.close();              
+        } 
+        catch (Exception e) 
+        {
+            System.out.println("Server Failed");
+            System.out.println(e);
+        }
+    }
+
+    
+
+}
\ No newline at end of file
diff --git a/Q2Tools.java b/Q2Tools.java
new file mode 100644
index 0000000..9b3e84d
--- /dev/null
+++ b/Q2Tools.java
@@ -0,0 +1,70 @@
+import java.math.BigInteger;
+
+public class Q2Tools {
+
+    Q2Tools()
+    {
+        //Nothing to do here
+    }
+    
+    public void generateRSA()
+    {
+
+        int e = 65537;
+
+        //Generate p
+
+        //Generate q
+
+
+
+    }
+
+    /**
+     * A^B mod C
+     * @param A
+     * @param B
+     * @param C
+     */
+    public void fastModularExpon(int A, int B, int C)
+    {
+        String bInBinary = Integer.toBinaryString(B);
+
+        int test = 0;
+
+        System.out.println(bInBinary);
+
+        int k = 0;
+        for(int i = bInBinary.length()-1; i >= 0; i--)
+        {
+            
+            if(bInBinary.charAt(i)=='1')
+            {
+                double temp = Math.pow(2, k);
+                System.out.println(2+"^"+k+"="+temp);
+                test += temp;
+            }
+            else
+            {
+                System.out.println(0+"^"+k+"=0"); 
+            }
+            k++;
+        }
+        
+        System.out.println(test);
+    }
+
+    /**
+     * Simply wrapper for Integer.toBinaryString
+     * @param number integer to be converted to binary
+     * @return binary of number as an Biginteger
+     */
+    public BigInteger convertToBinaryBigInt(int number)
+    {
+        //Take input number, convert to binary string
+        String binaryString = Integer.toBinaryString(number);
+        BigInteger bigBinary = new BigInteger(binaryString);
+        return bigBinary;
+    }
+
+}