added for E-INVOICE process

git-svn-id: http://15.206.35.175/svn/proteus/business-java/trunk@217037 ce508802-f39f-4f6c-b175-0d175dae99d5

webitm-gst/src/ibase/webitm/resources/gst/einv_sandbox.cer

+Bag Attributes
+    localKeyID: 01 00 00 00 
+    1.3.6.1.4.1.311.17.3.20: 43 7C 69 B8 7F 7C A1 88 
+    1.3.6.1.4.1.311.17.3.71: 41 00 44 00 4D 00 49 00 4E 00 2D 00 50 00 43 00 00 00 
+    1.3.6.1.4.1.311.17.3.75: 33 00 38 00 31 00 41 00 42 00 45 00 35 00 30 00 39 00 33 00 46 00 41 00 37 00 32 00 39 00 39 00 31 00 30 00 39 00 38 00 39 00 33 00 41 00 45 00 33 00 43 00 39 00 37 00 30 00 45 00 41 00 36 00 5F 00 00 00 
+subject=C = IN, O = NATIONAL INFORMATICS CENTRE, OU = NIC KARNATAKA STATE UNIT, CN = SURESH C METI, postalCode = 560001, ST = KARNATAKA
+
+issuer=C = IN, O = Capricorn Identity Services Pvt Ltd., OU = Certifying Authority, postalCode = 110092, ST = DELHI, street = "18,LAXMI NAGAR DISTRICT CENTER", houseIdentifier = "G5,VIKAS DEEP BUILDING", CN = Capricorn CA 2014
+
+-----BEGIN CERTIFICATE-----
+MIIFzDCCBLSgAwIBAgIDCacNMA0GCSqGSIb3DQEBCwUAMIHiMQswCQYDVQQGEwJJ
+TjEtMCsGA1UEChMkQ2Fwcmljb3JuIElkZW50aXR5IFNlcnZpY2VzIFB2dCBMdGQu
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++fwjYawijdPFIpY231RFIQTl10iyH3oenkexsRp+peExvEZYath8YLBgAFZeBYaA
+1yrgILF3n2OlxrP/8Pvp1QSpfYXIwqZ69s6zi3YVOB9eukyqTwfHXBQl9nBJ8cHN
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+2klMIRAt5CYh4KWRjN0vRf0zYBDdBuzyi3+HKvDFNH+L55axjezf8kJwrhvbdNCm
+-----END CERTIFICATE-----

webitm-gst/src/ibase/webitm/resources/gst/einv_sandbox.pem

+-----BEGIN PUBLIC KEY-----
+MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEArxd93uLDs8HTPqcSPpxZ
+rf0Dc29r3iPp0a8filjAyeX4RAH6lWm9qFt26CcE8ESYtmo1sVtswvs7VH4Bjg/F
+DlRpd+MnAlXuxChij8/vjyAwE71ucMrmZhxM8rOSfPML8fniZ8trr3I4R2o4xWh6
+no/xTUtZ02/yUEXbphw3DEuefzHEQnEF+quGji9pvGnPO6Krmnri9H4WPY0ysPQQ
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+IOc4EDX0WMa9aH4+snt18WAXVGwF2B4fmBk7AtmkFzrTmbpmyVqA3KO2IjzMZPw0
+hQIDAQAB
+-----END PUBLIC KEY-----

webitm-gst/src/ibase/webitm/util/gst/AESEncryption.java

@@ -59,4 +59,51 @@ public class AESEncryption
         DECRYPT_CIPHER.init(Cipher.DECRYPT_MODE, sk);
         return DECRYPT_CIPHER.doFinal(Base64.decodeBase64(plainText));
     }
+   // --------------------------------------------------------------------nandkumar gadkari-----------------
+    public static byte[] createAESKey() {
+		 byte[]  appKey = null ;
+		      try {
+		          KeyGenerator gen = KeyGenerator.getInstance("AES");
+		          gen.init(32);
+		          SecretKey secret = gen.generateKey();
+		          appKey = secret.getEncoded();
+		          } catch (Exception e) {
+		        	  e.printStackTrace();
+		         
+		        }
+		    return appKey;
+		 }  
+    
+    
+    public static String encryptBySymmetricKey(String json, String decryptedSek)
+    {
+     byte[] sekByte = Base64.decodeBase64(decryptedSek);
+     SecretKey aesKey = new SecretKeySpec(sekByte, "AES");
+     try {
+
+      Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
+      cipher.init(Cipher.ENCRYPT_MODE, aesKey);
+       byte[] encryptedjsonbytes = cipher.doFinal(json.getBytes());
+      String encryptedJson = Base64.encodeBase64String(encryptedjsonbytes);
+      return encryptedJson;
+   }
+    catch(Exception e) {
+    return "Exception "+e;
+     }
+  }
+    public static String decrptyBySyymetricKey(String encryptedSek, byte[] appKey)
+    {
+    	SecretKey   aesKey = new SecretKeySpec(appKey, "AES"); // converts bytes(32 byte random generated) to key
+     try {
+     Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding"); // encryption type = AES with padding PKCS5
+      cipher.init(Cipher.DECRYPT_MODE, aesKey); // initiate decryption type with the key
+     byte[] encryptedSekBytes = Base64.decodeBase64(encryptedSek); // decode the base64 encryptedSek to bytes
+      byte[] decryptedSekBytes = cipher.doFinal(encryptedSekBytes); // decrypt the encryptedSek with the initialized cipher containing the key(Results in bytes)
+     String decryptedSek = Base64.encodeBase64String(decryptedSekBytes); // convert the decryptedSek(bytes) to Base64 StriNG
+      return decryptedSek; // return results in base64 string
+     }catch(Exception e) 
+     {
+      return "Exception; "+e;
+     }
+   }
 }