From 79a5d12235a6b837e05e30fba253321f5afe770c Mon Sep 17 00:00:00 2001
From: Sagar <32388717+sagar9268@users.noreply.github.com>
Date: Tue, 5 Dec 2017 02:52:53 +0530
Subject: [PATCH 1/3] Java cipher-decipher program

A simple java based ciphering-deciphering program for beginners.
---
 Cryptography/Cipher-Decipher.java | 48 +++++++++++++++++++++++++++++++
 1 file changed, 48 insertions(+)
 create mode 100644 Cryptography/Cipher-Decipher.java

diff --git a/Cryptography/Cipher-Decipher.java b/Cryptography/Cipher-Decipher.java
new file mode 100644
index 000000000..a6805f69b
--- /dev/null
+++ b/Cryptography/Cipher-Decipher.java
@@ -0,0 +1,48 @@
+
+import java.util.*;
+public class Encryptiondecryption {
+
+	public static void main(String[] args) {
+		Scanner s=new Scanner(System.in);
+		System.out.println("Enter the encryption key(1-25):");
+		int e=s.nextInt();                                              //Encryption key
+		String ptext,ctext="";
+		char ch;
+		System.out.println("Plaintext-Uppercase Letters Only:");
+		ptext=s.next();                                                 //Plaintext taken from user
+		int len=ptext.length();
+		//Encryption starts from here.
+		for(int i=0;i<len;i++)
+		{
+			ch=ptext.charAt(i);
+			ch=(char)(ch+e);
+			if(ch>90)
+				ch=(char)(ch-26);
+			ctext=ctext+ch;
+			
+		}
+		System.out.println("Ciphertext:"+ctext);
+		//Decryption starts from here.
+		System.out.println("Enter Ciphertext-Uppercase Letters Only:");
+		ctext=s.next();
+		len=ctext.length();
+		System.out.println("Plaintext for each encryption key from 1 to 25:");
+		ptext="";
+		for(int i=1;i<=25;i++)
+		{
+			for(int j=0;j<len;j++)
+			{
+				ch=ctext.charAt(j);
+				ch=(char)(ch-i);
+				if(ch<65)
+					ch=(char)(ch+26);
+				ptext=ptext+ch;
+			}
+			System.out.println("Key "+i+" : Plaintext="+ptext);
+			ptext="";
+		}
+		
+
+	}
+
+}

From 338316a6c6a9762a2d3ec974d93d390e718e81e7 Mon Sep 17 00:00:00 2001
From: Sagar <32388717+sagar9268@users.noreply.github.com>
Date: Tue, 5 Dec 2017 03:10:31 +0530
Subject: [PATCH 2/3] increased readability

---
 Cryptography/Cipher-Decipher.java | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Cryptography/Cipher-Decipher.java b/Cryptography/Cipher-Decipher.java
index a6805f69b..ad32e26e2 100644
--- a/Cryptography/Cipher-Decipher.java
+++ b/Cryptography/Cipher-Decipher.java
@@ -6,7 +6,8 @@ public static void main(String[] args) {
 		Scanner s=new Scanner(System.in);
 		System.out.println("Enter the encryption key(1-25):");
 		int e=s.nextInt();                                              //Encryption key
-		String ptext,ctext="";
+		String ptext;
+		String ctext="";
 		char ch;
 		System.out.println("Plaintext-Uppercase Letters Only:");
 		ptext=s.next();                                                 //Plaintext taken from user

From bd80f275a57cff1b47e9c054f03b11e2ab4eef26 Mon Sep 17 00:00:00 2001
From: Sagar <32388717+sagar9268@users.noreply.github.com>
Date: Tue, 5 Dec 2017 20:54:13 +0530
Subject: [PATCH 3/3] package name added

---
 Cryptography/Cipher-Decipher.java | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Cryptography/Cipher-Decipher.java b/Cryptography/Cipher-Decipher.java
index ad32e26e2..4d2f62003 100644
--- a/Cryptography/Cipher-Decipher.java
+++ b/Cryptography/Cipher-Decipher.java
@@ -1,5 +1,6 @@
 
 import java.util.*;
+package crypyography;
 public class Encryptiondecryption {
 
 	public static void main(String[] args) {