internal void Encrypt(string InputPath, string OutputPath)
{
byte[] hashKey = KeyHeader.GetMessageKey(this.KeyPath);
byte[] checkSum = new byte[64];
MemoryStream header = new MemoryStream(MessageHeader.Create(this.KeyPath, Path.GetExtension(InputPath), checkSum));
this.FileSize = GetFileSize(InputPath);
this.IsEncryption = true;
//calculate progress interval
CalculateInterval();
if (this.Engine == Engines.ChaCha || this.Engine == Engines.DCS || this.Engine == Engines.Salsa || this.Engine == Engines.Fusion)
{
// stream cipher
ProcessStream(InputPath, OutputPath, header);
}
else
{
// init block cipher
this.Mode.Init(true, new KeyParams(this.Key, this.IV));
if (this.Mode.Name == "CTR" && this.IsParallel)
{
ParallelCTR(InputPath, OutputPath, header);
}
else
{
EncryptFile(InputPath, OutputPath, header);
}
}
// create checksum and sign
checkSum = GetChecksum(OutputPath, hashKey);
MessageHeader.SetMessageHash(OutputPath, checkSum);
}
/// <summary>
/// Verify the hash value for a file
/// </summary>
/// <param name="InputPath">Encrypted file path</param>
/// <param name="OutputPath">Decrypted file path</param>
/// <param name="KeyPath">Full path to key file</param>
/// <returns>Verified [bool]</returns>
internal bool Verify(string InputPath, string KeyPath)
{
byte[] hashKey = KeyHeader.GetMessageKey(KeyPath);
byte[] msgHash = MessageHeader.GetMessageHash(InputPath);
byte[] hash = GetChecksum(InputPath, hashKey);
return(IsEqual(msgHash, hash));
}