3des

I'm trying to upgrade my current app in iOS 8, to adapt to the new encryption SHA256 of Redsys / Sermpa. But I have problems in data encryption. In PHP, Java and .NET I get a result, completely different from iOS. I think the problem must be in the 3DES IOS CCCrypt. The PHP, JAVA and .NET code is a library, I can not alter that library. I have to make the result of encryption in iOS, is identical to right result encrypt in PHP, JAVA and .NET. Library Java Code: String secretCodeString = "Mk9m98IfEblmPfrpsawt7BmxObt98Jev"; String Ds_Merchant_Order = "1442772645"; String Ds_MerchantParameters =

I'm trying to encrypt data using triple DES with two different keys, so given the two keys k1 and k2 the cryptotext would be Ek1(Dk2(Ek1(plaintext))) where E is Encryption and D Decryption. I'm trying to simulate this using DES algorithm from java. Here is the code: public static void main(String[] args) { SecretKey k1 = generateDESkey(); SecretKey k2 = generateDESkey(); String firstEncryption = desEncryption("plaintext", k1); String decryption = desDecryption(firstEncryption, k2); String secondEncryption = desEncryption(decryption, k1); } public static SecretKey generateDESkey() {

I am new to Java. I followed this tutorial about Encryption and Decryption using 3DES algorithm. I have implemented like this: Created a class and placed the 3DES code provided in the above link. Called the encrypt method in the above link as below: String encryptedPassword = Encrypter.encrypt(edtText.getText().toString()); I am getting the exception in logcat as below: 05-02 15:19:10.804: W/System.err(4445): java.security.NoSuchProviderException: Provider not available: SunJCE 05-02 15:19:10.820: W/System.err(4445): at javax.crypto.Cipher.getInstance(Cipher.java:209) 05-02 15:19:10.820: W

I'm trying to decrypt data using PyCrypto. The data was encoded in Java with the javax.crypto package. The encryption is Triple DES (referred to as " DESede " in Java). As far as I can tell, default settings are used for everything. However, when I go to decrypt the data in Python there is always a problem with the data. Here's the Java code that does encrypting/decrypting: import sun.misc.BASE64Decoder; import sun.misc.BASE64Encoder; import javax.crypto.Cipher; import javax.crypto.SecretKey; import javax.crypto.SecretKeyFactory; import javax.crypto.spec.DESedeKeySpec; import java.security

I'm writing a simple encryption system for logging in but I've got small issue. C# encrypt function: public static string EncryptString(string Message, string Passphrase) { byte[] Results; System.Text.UTF8Encoding UTF8 = new System.Text.UTF8Encoding(); // Step 1. We hash the passphrase using MD5 // We use the MD5 hash generator as the result is a 128 bit byte array // which is a valid length for the TripleDES encoder we use below MD5CryptoServiceProvider HashProvider = new MD5CryptoServiceProvider(); byte[] TDESKey = HashProvider.ComputeHash(UTF8.GetBytes(Passphrase)); // Step 2. Create a new

I'm trying to do some triple DES encryption in Ruby. I'm trying to replicate the results from this page: http://da.nmilne.com/des.html I'm trying to replicate those result in Ruby. I suspect the problem is the key is supposed to be a string, but I need to pass in a Hexadecimal key. Either that or the string being encrypted is in the wrong format. Or maybe both. :-) require 'openssl' des = OpenSSL::Cipher::Cipher.new("des-ede-cbc") des.encrypt des.key="23232323232323234545454545454545" des.update("0000000000000000") res=des.final res.unpack('H*') => ["5045c5d37ca4d13b"] But it should be: => [

For `BDK = "0123456789ABCDEFFEDCBA9876543210"` `KSN = "FFFF9876543210E00008"` The ciphertext generated was below "C25C1D1197D31CAA87285D59A892047426D9182EC11353C051ADD6D0F072A6CB3436560B3071FC1FD11D9F7E74886742D9BEE0CFD1EA1064C213BB55278B2F12"` which I found here . I know this cipher-text is based on BDK and KSN but how this 128 length cipher text was generated? What are steps involved in it or algorithm used for this? Could someone explain in simple steps. I found it hard to understand the documents I got while googled. Regarding DUKPT , there are some explanations given on Wiki . If that

I'm developing an iOS app that makes payments through a TPV Redsys API. I'm following the documents but it's not working (server returns error due to an incorrect signature) and I guess it's because of the 3DES encryption. I'm using the test data from the documentation so the output should be the same as in the documentation. This is my code: - (void) payViaTPVWithAmount:(NSString *)amount andOrderId:(NSString *)orderId { // I don't use my amount and orderId but those provided by the documentation to test // We need to obtain 3 fields: DS_SIGNATURE_VERSION, DS_MERCHANTPARAMETERS and DS