How To Decrypt Emails And Attachments
Jul 25, 2014
Currently my java program is reading emails along with attachments from the mailing server. It works fine as long as the email and the attachments are "not" encrypted.
The problem comes when the email and/or the attachment are encrypted.
I need to extend my application so that it should be able to handle encrypted emails and attachments as well.
I did some research and found out that for decrypting the contents i need the private key of the recipient email id and the digital signature of the sender?
If my above understanding is correct, some reference java examples / snippets where i get some insight into the java api used to perform this?
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May 1, 2015
Java Code:
package methods;
import java.util.*;
import javax.swing.*;
public class Methods {
public static void main(String[] args) {
// TODO Auto-generated method stub
char choicee2;
[Code] .....
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Nov 16, 2006
I am using JSP as a front-end view purpose,From this page I have to push the data to one of the Action Request System form (AR System 6.3). I am using ARS JAVA API.As per requirement I have to upload one file from user on JSP and have to push it to this back-end form.I tried JavaZooms javazoom. upload class but its giving me a error and I couldn''t fine this class file anywhere. So this code didn''t work finally.
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Feb 12, 2014
I am using AES/CBC/PKCS5Padding algorithm to encrypt/decrypt, it works fine across machines, since i am not using a Facrtory to create the secret . I am using constant SecretKeySpec and iv for the ciphers. This of course heart the security , and doesn't prevent the "man of the middle" problem .
I saw that there are ways with key generation with MAC , and RSA symmetric encryption , but i am not sure how to implement it , and how to it depends on local certificates or files .
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Aug 27, 2014
I am developing a java code using netbeans for encryption decryption by RSA algorithm. Swings and file handling play a major role in these code. My encryption code is working nicely but the code for decryption is not since keys file is not being read. That is why variable mod and pri are getting null values and the following error stack is coming. I know where the problem is somewhere in void readkeys() function but cannot solve it.
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
at java.math.BigInteger.modPow(BigInteger.java:1579)
at rsakeydecryption1.RsaKeyDecryption.decryption(RsaKeyDecryption1.java:167)
at rsakeydecryption1.RsaKeyDecryption.read_output(RsaKeyDecryption1.java:294)
at rsakeydecryption1.RsaKeyDecryption.actionPerformed(RsaKeyDecryption1.java:330)
[Code] .....
My code for decryption is
package rsakeydecryption1;
import java.math.BigInteger;
import java.util.Random;
import java.io.*;
import javax.swing.*;
[Code] ....
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Aug 9, 2014
I have a request to create a java scheduled job to send email with attachment of word document every week. any example codes I can use. This is my first time to code this request, I do not what is the standard way to do it.
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Jul 10, 2014
I need to write a java application which can download attachments from lotus notes. I have a mailbox configured which gets only attachment based mails.
I have a code which is like this ...
import lotus.domino.*;
public class NotesJavaShell extends AgentBase{
// Public fields.
// Local vars
private Session session;
[code]....
As I said i have a mail box configured.. What should I place in config_server, log_server, source_server?
I am getting an error as : Notes error code 4000. Could not open configuration database
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Jun 30, 2014
I want to encrypt a file and decrypt it on another host. For decryption on another host I guess I need to transfer the cipher... how can this be done? How can you write a Cipher to disk?Or am I completely on a wron track?
The following code is doing it already on one host:
package test;
import java.io.FileInputStream;import java.io.FileOutputStream;import java.io.ObjectInputStream;import java.io.ObjectOutputStream;import java.io.Serializable;import java.security.Provider;
import javax.crypto.*;import javax.crypto.spec.DESKeySpec;
[Code] ....
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Oct 28, 2014
My assignment is to write a program that will encrypt and decrypt a sentence entered by a user but the encryption is to be random using an array. Can I convert my sentence(string) from char to int then create a random array to encrypt?
import java.util.Scanner;
import java.util.Random;
/*SentenceEncryptionProgram
*/
public class SentenceEncryption {
string sentence; //sentence entered by user
[Code] ....
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