And RSA encryption/decryption solution that works with java (Android) and csharp
It's just a couple o classes to be used to implement a RSA cryptography comunication between an android app and a .Net c# web service
Use:
WebService CSharp
//The public/private RSA keys
string keys = MCrypt.GenerateRSAKeys();
//The public key, you must share this with the android app
string pubkey = MCrypt.GetRSAPublicKey(keys);
string androidPubKey = "RSA PUB Key SENT BY THE ANDROID APP";
//Encrypted string ready to be sent to the java android app
string cypher = MCrypt.EncryptRSAToJava(androidPubKey, "Hello World!");Android App Side
//The public/private RSA keys
Hashtable<String, String> keys = MCrypt.generateRSAKeys();
//The public key, you must share this with the csharp webservice
String pubkey = MCrypt.getPublicKey(Context, keys.get("publicKey"));
//Get the public key string
String csharpPubKeyString = "RSA PUB Key SENT BY THE CSHARP WEB SERVICE";
//Converts into RSAPublicKey object
RSAPublicKey csharpPubKey = MCrypt.getPublicKey(Context, csharpPubKey);
//Encrypted string ready to be sent to the csharp Web Service
String cypher = MCrypt.encryptRSABlock(csharpPubKey, "Hello World!");
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