public string Encrypt(string plainTextMessage, IPublicKeyProvider publicKeyProvider)
{
var publicKey = AsymetricKeyParameterExtensions
.GetPublicKeyFromString(publicKeyProvider
.GetPublicKeyString(folderProvider.GetFolderName()));
var csp = new RSACryptoServiceProvider(2048);
csp.ImportParameters(publicKey);
var bytesPlainText = Encoding.Unicode.GetBytes(plainTextMessage);
var bytesCipherText = csp.Encrypt(bytesPlainText, false);
return(Convert.ToBase64String(bytesCipherText));
}
public void SaveKeyPair(AsymmetricCipherKeyPair keyPair, string folderName)
{
var publicKey = AsymetricKeyParameterExtensions.GetKeyStringFromParameter(keyPair.Public);
var privateKey = AsymetricKeyParameterExtensions.GetKeyStringFromParameter(keyPair.Private);
var basePath = Path.Combine(AppDataFolder, $"{folderName}.data");
Directory.CreateDirectory(basePath);
var publicKeyPath = Path.Combine(basePath, "public.pem");
var privateKeyPath = Path.Combine(basePath, "private.pem");
File.WriteAllText(publicKeyPath, publicKey);
File.WriteAllText(privateKeyPath, privateKey);
}
