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);
}
public override Task <GetWorkerResponse> Get(GetWorkerRequest request, ServerCallContext context)
{
this.faster.StartSession();
this.headers.StartSession();
var result = new GetWorkerResponse();
var hits = 0;
foreach (var key in request.Key)
{
var x = new Common.KeyValuePair()
{
Key = key,
Value = ByteString.Empty
};
//first lets figure out if the key exists and stil valid
var k = new KeyHeader();
var v = new ValueHeader();
var o = new KeyHeader();
k.key = key;
headers.Read(ref k, ref o, ref v, default, 0);
/// <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));
}
private int GetIvSize(string KeyPath)
{
IVSizes ivSize = KeyHeader.GetIvSize(KeyPath);
if (ivSize == IVSizes.V128)
{
return(16);
}
else if (ivSize == IVSizes.V256)
{
return(32);
}
else
{
return(8);
}
}
internal Transform(string KeyPath)
{
if (!File.Exists(KeyPath))
{
return;
}
// get key and algorithm
this.ProgressInterval = PRG_INTV;
this.KeyPath = KeyPath;
this.Engine = KeyHeader.GetEngineType(KeyPath);
this.Key = GetKey(KeyPath);
int rounds = GetRoundsSize(KeyPath);
// stream ciphers
if (this.Engine == Engines.ChaCha)
{
StreamCipher = new ChaCha(rounds);
}
else if (this.Engine == Engines.DCS)
{
StreamCipher = new DCS();
}
if (this.Engine == Engines.Salsa)
{
StreamCipher = new Salsa20(rounds);
}
if (this.Engine == Engines.Fusion)
{
StreamCipher = new Fusion(rounds);
}
this.BlockSize = 64;
// get iv
if (this.Engine != Engines.DCS)
{
this.IV = GetIV(KeyPath);
}
else
{
this.BlockSize = (DCS_BLOCK * 4);
}
// dcs, chacha and salsa are stream ciphers
if (this.Engine == Engines.DCS || this.Engine == Engines.ChaCha || this.Engine == Engines.Salsa || this.Engine == Engines.Fusion)
{
return;
}
this.IsParallel = Environment.ProcessorCount > 1;
// set params from key data
this.BlockSize = KeyHeader.GetBlockSize(KeyPath) == BlockSizes.B128 ? 16 : 32;
this.CipherMode = KeyHeader.GetCipherType(KeyPath);
this.PaddingMode = KeyHeader.GetPaddingType(KeyPath);
// block size
if (this.IV != null && this.IV.Length > 0)
{
this.BlockSize = this.IV.Length;
}
else
{
this.CipherMode = CipherModes.ECB;
}
// padding selection
if (this.PaddingMode == PaddingModes.PKCS7)
{
Padding = new PKCS7();
}
else if (this.PaddingMode == PaddingModes.X923)
{
Padding = new X923();
}
else if (this.PaddingMode == PaddingModes.Zeros)
{
Padding = new ZeroPad();
}
// create engine
if (this.Engine == Engines.RDX)
{
this.BlockCipher = new RDX(this.BlockSize);
}
else if (this.Engine == Engines.RSM)
{
this.BlockCipher = new RSM(rounds, this.BlockSize);
}
else if (this.Engine == Engines.RSX)
{
this.BlockCipher = new RSX(this.BlockSize);
}
else if (this.Engine == Engines.RHX)
{
this.BlockCipher = new RHX(rounds, this.BlockSize);
}
else if (this.Engine == Engines.SPX)
{
this.BlockCipher = new SPX(rounds);
}
else if (this.Engine == Engines.SHX)
{
this.BlockCipher = new SHX(rounds);
}
else if (this.Engine == Engines.TFX)
{
this.BlockCipher = new TFX(rounds);
}
else if (this.Engine == Engines.THX)
{
this.BlockCipher = new THX(rounds);
}
else if (this.Engine == Engines.TSM)
{
this.BlockCipher = new TSM(rounds);
}
// create cipher
if (this.CipherMode == CipherModes.CBC)
{
this.Mode = new CBC(this.BlockCipher);
}
else if (this.CipherMode == CipherModes.CTR)
{
this.Mode = new CTR(this.BlockCipher);
}
else if (this.CipherMode == CipherModes.ECB)
{
this.Mode = new ECB(this.BlockCipher);
}
}
private int GetRoundsSize(string KeyPath)
{
this.RoundCount = KeyHeader.GetRoundCount(KeyPath);
if (this.RoundCount == RoundCounts.R8)
{
return(8);
}
else if (this.RoundCount == RoundCounts.R10)
{
return(10);
}
else if (this.RoundCount == RoundCounts.R12)
{
return(12);
}
else if (this.RoundCount == RoundCounts.R14)
{
return(14);
}
else if (this.RoundCount == RoundCounts.R16)
{
return(16);
}
else if (this.RoundCount == RoundCounts.R18)
{
return(18);
}
else if (this.RoundCount == RoundCounts.R20)
{
return(20);
}
else if (this.RoundCount == RoundCounts.R22)
{
return(22);
}
else if (this.RoundCount == RoundCounts.R24)
{
return(24);
}
else if (this.RoundCount == RoundCounts.R26)
{
return(26);
}
else if (this.RoundCount == RoundCounts.R28)
{
return(28);
}
else if (this.RoundCount == RoundCounts.R30)
{
return(30);
}
else if (this.RoundCount == RoundCounts.R32)
{
return(32);
}
else if (this.RoundCount == RoundCounts.R34)
{
return(34);
}
else if (this.RoundCount == RoundCounts.R38)
{
return(38);
}
else if (this.RoundCount == RoundCounts.R40)
{
return(40);
}
else if (this.RoundCount == RoundCounts.R42)
{
return(42);
}
else if (this.RoundCount == RoundCounts.R48)
{
return(48);
}
else if (this.RoundCount == RoundCounts.R56)
{
return(56);
}
else if (this.RoundCount == RoundCounts.R64)
{
return(64);
}
else if (this.RoundCount == RoundCounts.R80)
{
return(80);
}
else if (this.RoundCount == RoundCounts.R96)
{
return(96);
}
else if (this.RoundCount == RoundCounts.R128)
{
return(128);
}
else
{
return(20);
}
}
private int GetKeySize(string KeyPath)
{
KeySizes keySize = KeyHeader.GetKeySize(KeyPath);
if (this.Engine == Engines.DCS)
{
return(96);
}
if (keySize == KeySizes.K128)
{
return(16);
}
else if (keySize == KeySizes.K192)
{
return(24);
}
else if (keySize == KeySizes.K192)
{
return(24);
}
else if (keySize == KeySizes.K256)
{
return(32);
}
else if (keySize == KeySizes.K384)
{
return(48);
}
else if (keySize == KeySizes.K448)
{
return(56);
}
else if (keySize == KeySizes.K512)
{
return(64);
}
else if (keySize == KeySizes.K1024)
{
return(128);
}
else if (keySize == KeySizes.K1536)
{
return(192);
}
else if (keySize == KeySizes.K2560)
{
return(320);
}
else if (keySize == KeySizes.K3584)
{
return(448);
}
else if (keySize == KeySizes.K4608)
{
return(576);
}
else
{
return(32);
}
}