tripledes

I have to encrypt and decrypt using tripleDES to send some information to a specific server. The server use java to decrypt and I use PHP to encrypt and decrypt data. I have tried using this PHP Equivalent for Java Triple DES encryption/decryption but it does not work for my problem. My java code is the following: Note: Cadena means "string" and Llave means "key". The java code is not mine. public class TripleDes { public static String EncryptTripleDES(String Cadena, String Llave) { String cryptedString = ""; try{ SecretKeyFactory secretKeyFactory = SecretKeyFactory.getInstance("DESede");

I need to encrypt a complete java object. I am having a code which i have seen on internet which shows how to encrypt and decrypt text not the java object. So i was confused whether this is possible to encrypt complete java object. The code which i am using is below. package security; import java.security.spec.KeySpec; import javax.crypto.Cipher; import javax.crypto.SecretKey; import javax.crypto.SecretKeyFactory; import javax.crypto.spec.DESedeKeySpec; import sun.misc.BASE64Decoder; import sun.misc.BASE64Encoder; /** * This class defines methods for encrypting and decrypting using the Triple

Admin please don't mark it as duplicate read my question completely. I am encrypting and decrypting some text but while running in same file with main its running fine but when i call its encrypt and decrypt function from outside. Its giving an error at runtime. I am attaching the code. package desede; import java.io.ByteArrayInputStream; import java.io.ByteArrayOutputStream; import java.io.IOException; import java.io.ObjectInputStream; import java.io.ObjectOutputStream; import javax.crypto.Cipher; import javax.crypto.SecretKey; import javax.crypto.spec.SecretKeySpec; import org.apache.commons

According to Wikipedia , TripleDES supports 56, 112, and 168-bit key lengths, but the System.Cryptography.TripleDESCryptoServiceProvider.LegalKeySizes says it only accepts 128 and 192-bit key lengths. The system I'm developing needs to be interoperable (data encrypted by my code needs to be decryptable in PHP, Java, and Objective-C) and I don't who is correct in this case. So who should I believe? And how can I be sure my encrypted data is portable? Wikipedia does not say TripleDES supports 56 bit keys. The "keying options" talk about "triple-length" keys and "double-length" keys, the latter

I'm following this tutorial to use 3DES encryption, and i needed to make some changes in cipher settings, so here's my code: public class TripleDES { public static int MAX_KEY_LENGTH = DESedeKeySpec.DES_EDE_KEY_LEN; private static String ENCRYPTION_KEY_TYPE = "DESede"; private static String ENCRYPTION_ALGORITHM = "DESede/ECB/PKCS7Padding"; private final SecretKeySpec keySpec; private final static String LOG = "TripleDES"; public TripleDES(String passphrase) { byte[] key; try { // get bytes representation of the password key = passphrase.getBytes("UTF8"); } catch (UnsupportedEncodingException e

I have a set of encrypted documents encoded with TripleDES coming from a remote system. I need to decode the data in C# and I have no control over the key or encoding algorithm. All I have is the key and the mode (CBC) and the data located in a file. The TripleDESCryptoServiceProvider is easy enough to use, but I can't figure out how to use the Decryptor without an Initialization Vector. We have a have 24 byte (192bit) key to decrypt with, but nothing else. string key = "1468697320656E6372797174696F6E206973737265206933"; byte[] keyData = ParseHex(key); // key is OK at 24 bytes

I am trying to get TripleDES encryption working in Java. From the Wikipedia article under Keying Options , I want to use option 1, where All three keys are independent . From the Cipher docs it says to go to the reference guide here , but it still isn't clear to me. I am working on getting examples running, and use both of these lines in different projects: Cipher c = Cipher.getInstance("DESede"); Cipher cipher = Cipher.getInstance("TripleDES/ECB/PKCS5Padding"); Both compile fine, so what's the difference? Should I be using one over the other? Do both of these work for using three separate