private string DecryptString(MemoryStream text, string pass)
{
using (ChoPGPEncryptDecrypt pgp = new ChoPGPEncryptDecrypt())
{
using (MemoryStream a = new System.IO.MemoryStream())
{
byte[] r = pgp.Decrypt(text.ToArray(), File.OpenRead("Sample_Pri.asc"), pass);
MemoryStream ms = new MemoryStream(r);
StreamReader reader = new StreamReader(ms);
return(reader.ReadToEnd());
}
}
}
private static void Decrypt()
{
using (ChoPGPEncryptDecrypt pgp = new ChoPGPEncryptDecrypt())
{
using (Stream input = File.OpenRead("SampleData.PGP"))
{
using (Stream output = File.OpenWrite("SampleData.OUT"))
{
pgp.Decrypt(input, output, "Sample_Pri.asc", "Test123");
}
}
Console.WriteLine("PGP Decryption done.");
}
}
public async Task <(FileCrypt fileDetails, MemoryStream memoryStream)> DecryptAndDownloadFileAsync(long fileCryptId)
{
MemoryStream memoryStream = new MemoryStream();
MemoryStream decryptMemoryStream = new MemoryStream();
Assembly asm = Assembly.GetExecutingAssembly();
string path = System.IO.Path.GetDirectoryName(asm.Location);
string privateKeyFileFullPath = path + @"\" + GlobalAppConfigurations.Instance.GetValue("PGPPrivateKeyFileFullPath").ToString();
string publicKeyFileFullPath = path + @"\" + GlobalAppConfigurations.Instance.GetValue("PGPPublicKeyFileFullPath").ToString();
string pgpKeyPassword = GlobalAppConfigurations.Instance.GetValue("PGPKeyPassword").ToString();
FileCrypt fileCrypt = await this._fileCryptRepository.GetEncryptedFileDetailsAsync(fileCryptId);
await this._fileCryptRepository.SaveFileDecryptionHistoryAsync(fileCrypt);
using (var stream = new FileStream(fileCrypt.EncryptedFileFullPath, FileMode.Open))
{
await stream.CopyToAsync(memoryStream);
}
memoryStream.Position = 0;
using (ChoPGPEncryptDecrypt pgp = new ChoPGPEncryptDecrypt())
{
try
{
pgp.Decrypt(memoryStream,
decryptMemoryStream,
privateKeyFileFullPath, pgpKeyPassword);
}
catch (Exception ex)
{
throw ex;
}
}
decryptMemoryStream.Position = 0;
return(fileCrypt, decryptMemoryStream);
}
