public ActionResult publicKey([FromHeader] string key)
{
if (String.IsNullOrEmpty(key))
{
throw new ArgumentNullException("Couldn't get the public key");
}
if (UserDatabaseAccess.keyCheck(key))
{
byte[] dataToChange = Encoding.ASCII.GetBytes(key);
byte[] encrpyt;
byte[] decryptData;
RSAParameters publicKey;
RSAParameters privateKey;
string str;
using (RSACryptoServiceProvider rsa = new RSACryptoServiceProvider())
{
rsa.PersistKeyInCsp = true;
publicKey = rsa.ExportParameters(false);
privateKey = rsa.ExportParameters(true);
encrpyt = RSAInternal.RSAEncrypt(dataToChange, publicKey);
str = RSACryptoExtensions.ToXmlStringCore22(rsa, false);
decryptData = RSAInternal.RSADecrypt(encrpyt, privateKey);
RSACryptoExtensions.FromXmlStringCore22(rsa, str);
}
return(Ok(str));
}
else
{
return(Ok("ApiKey invalid"));
}
}
// Encrypt data using the public key.
/*static public byte[] RSAEncrypt(byte[] DataToEncrypt, string key)
* {
* try
* {
* byte[] encryptedData; using (RSACryptoServiceProvider RSA = new RSACryptoServiceProvider())
* {
* // Convert string to keyParameter
* encryptedData = RSA.Encrypt(DataToEncrypt, false);
* }
* return encryptedData;
* }
* catch (CryptographicException e) { Console.WriteLine(e.Message); return null; }
* }*/
// Decrypt data using the private key.
/*static public byte[] RSADecrypt(byte[] DataToDecrypt,string key)
* {
* try
* {
* byte[] decryptedData;
* using (RSACryptoServiceProvider RSA = new RSACryptoServiceProvider())
* {
* RSACryptoExtensions.FromXmlStringCore22(RSA, key);
* decryptedData = RSA.Decrypt(DataToDecrypt, true);
* RSA.VerifyData()
* }
* return decryptedData;
* }
* catch (CryptographicException e)
* {
* Console.WriteLine(e.ToString());
* return null;
* }
* }*/
static public bool RSAVerify(byte[] data, byte[] signature, string key)
{
try
{
bool verified;
byte[] decryptedData;
using (RSACryptoServiceProvider RSA = new RSACryptoServiceProvider())
{
RSACryptoExtensions.FromXmlStringCore22(RSA, key);
verified = RSA.VerifyData(data, SHA1.Create(), signature);
}
return(verified);
}
catch (CryptographicException e)
{
Console.WriteLine(e.ToString());
return(false);
}
}