/// <summary>
/// Encapsulates the specified links into a DLC container.
/// </summary>
/// <param name="name">The name of the package.</param>
/// <param name="links">The links.</param>
/// <returns>
/// Base-64-encoded DLC container.
/// </returns>
public static string CreateDLC(string name, string[] links)
{
var sb = new StringBuilder();
sb.Append("<dlc>");
sb.Append("<header>");
sb.Append("<generator>");
sb.Append("<app>" + Convert.ToBase64String(Encoding.UTF8.GetBytes("RS TV Show Tracker")) + "</app>");
sb.Append("<version>" + Convert.ToBase64String(Encoding.UTF8.GetBytes("1.0")) + "</version>");
sb.Append("<url>" + Convert.ToBase64String(Encoding.UTF8.GetBytes("http://lab.rolisoft.net/")) + "</url>");
sb.Append("</generator>");
sb.Append("<dlcxmlversion>" + Convert.ToBase64String(Encoding.UTF8.GetBytes("20_02_2008")) + "</dlcxmlversion>");
sb.Append("</header>");
sb.Append("<content>");
sb.Append("<package name=\"" + Convert.ToBase64String(Encoding.UTF8.GetBytes(name)) + "\">");
foreach (var link in links)
{
sb.Append("<file>");
sb.Append("<url>" + Convert.ToBase64String(Encoding.UTF8.GetBytes(link)) + "</url>");
//sb.Append("<filename></filename>");
//sb.Append("<size></size>");
sb.Append("</file>");
}
sb.Append("</package>");
sb.Append("</content>");
sb.Append("</dlc>");
var xml = Convert.ToBase64String(Encoding.UTF8.GetBytes(sb.ToString()));
var key = BitConverter.ToString(new SHA256CryptoServiceProvider().ComputeHash(BitConverter.GetBytes(DateTime.Now.ToBinary()))).Replace("-", string.Empty).Substring(0, 16);
var srv = Utils.GetURL(DLCCrypt, "&data=" + key + "&lid=" + Convert.ToBase64String(Encoding.UTF8.GetBytes("http://lab.rolisoft.net/_3600")) + "&version=1.0&client=rstvshowtracker");
var rcr = Regex.Match(srv, @"<rc>(.+)</rc>");
if (!rcr.Groups[1].Success)
{
throw new Exception("The jDownloader DLC encryption service did not return an encryption key.");
}
var enc = rcr.Groups[1].Value;
var aes = new AesEngine();
var cbc = new CbcBlockCipher(aes);
var zbp = new ZeroBytePadding();
var pad = new PaddedBufferedBlockCipher(cbc, zbp);
pad.Init(true, new ParametersWithIV(new KeyParameter(Encoding.ASCII.GetBytes(key)), Encoding.ASCII.GetBytes(key)));
var xm2 = Convert.ToBase64String(pad.DoFinal(Encoding.ASCII.GetBytes(xml)));
return(xm2 + enc);
}
static PaddedBufferedBlockCipher MakeCipher(CipherMode cipher, CipherPadding padding)
{
var engine = new T();
IBlockCipher blockCipher = null;
IBlockCipherPadding blockPadding = null;
switch (cipher)
{
case CipherMode.CBC:
blockCipher = new CbcBlockCipher(engine);
break;
}
switch (padding)
{
case CipherPadding.ISO10126d2:
blockPadding = new ISO10126d2Padding();
break;
case CipherPadding.ISO7816d4:
blockPadding = new ISO7816d4Padding();
break;
case CipherPadding.PKCS7:
blockPadding = new Pkcs7Padding();
break;
case CipherPadding.TBC:
blockPadding = new TbcPadding();
break;
case CipherPadding.X923:
blockPadding = new X923Padding();
break;
case CipherPadding.ZeroByte:
blockPadding = new ZeroBytePadding();
break;
}
return(new PaddedBufferedBlockCipher(blockCipher, blockPadding));
}
/// <summary>
/// Builds an IBlockCipherPadding
/// </summary>
/// <param name="padding">SymmetricBlockPadding enum, padding name</param>
/// <returns>IBlockCipherPadding with loaded padding type, if padding is WITHCTS returns null</returns>
private IBlockCipherPadding getPadding(SymmetricBlockPadding padding)
{
IBlockCipherPadding paddingCipher = null;
switch (padding)
{
case SymmetricBlockPadding.NOPADDING:
paddingCipher = null;
break;
case SymmetricBlockPadding.ISO7816D4PADDING:
paddingCipher = new ISO7816d4Padding();
break;
case SymmetricBlockPadding.ISO10126D2PADDING:
paddingCipher = new ISO10126d2Padding();
break;
case SymmetricBlockPadding.PKCS7PADDING:
paddingCipher = new Pkcs7Padding();
break;
case SymmetricBlockPadding.WITHCTS:
break;
case SymmetricBlockPadding.X923PADDING:
paddingCipher = new X923Padding();
break;
case SymmetricBlockPadding.ZEROBYTEPADDING:
paddingCipher = new ZeroBytePadding();
break;
default:
this.error.setError("SB018", "Cipher " + padding + " not recognised.");
break;
}
return(paddingCipher);
}
public static IBufferedCipher GetCipher(
string algorithm)
{
if (algorithm == null)
{
throw new ArgumentNullException("algorithm");
}
algorithm = Platform.ToUpperInvariant(algorithm);
{
string aliased = (string)algorithms[algorithm];
if (aliased != null)
{
algorithm = aliased;
}
}
IBasicAgreement iesAgreement = null;
if (algorithm == "IES")
{
iesAgreement = new DHBasicAgreement();
}
else if (algorithm == "ECIES")
{
iesAgreement = new ECDHBasicAgreement();
}
if (iesAgreement != null)
{
return(new BufferedIesCipher(
new IesEngine(
iesAgreement,
new Kdf2BytesGenerator(
new Sha1Digest()),
new HMac(
new Sha1Digest()))));
}
if (Platform.StartsWith(algorithm, "PBE"))
{
if (Platform.EndsWith(algorithm, "-CBC"))
{
if (algorithm == "PBEWITHSHA1ANDDES-CBC")
{
return(new PaddedBufferedBlockCipher(
new CbcBlockCipher(new DesEngine())));
}
else if (algorithm == "PBEWITHSHA1ANDRC2-CBC")
{
return(new PaddedBufferedBlockCipher(
new CbcBlockCipher(new RC2Engine())));
}
else if (Strings.IsOneOf(algorithm,
"PBEWITHSHAAND2-KEYTRIPLEDES-CBC", "PBEWITHSHAAND3-KEYTRIPLEDES-CBC"))
{
return(new PaddedBufferedBlockCipher(
new CbcBlockCipher(new DesEdeEngine())));
}
else if (Strings.IsOneOf(algorithm,
"PBEWITHSHAAND128BITRC2-CBC", "PBEWITHSHAAND40BITRC2-CBC"))
{
return(new PaddedBufferedBlockCipher(
new CbcBlockCipher(new RC2Engine())));
}
}
else if (Platform.EndsWith(algorithm, "-BC") || Platform.EndsWith(algorithm, "-OPENSSL"))
{
if (Strings.IsOneOf(algorithm,
"PBEWITHSHAAND128BITAES-CBC-BC",
"PBEWITHSHAAND192BITAES-CBC-BC",
"PBEWITHSHAAND256BITAES-CBC-BC",
"PBEWITHSHA256AND128BITAES-CBC-BC",
"PBEWITHSHA256AND192BITAES-CBC-BC",
"PBEWITHSHA256AND256BITAES-CBC-BC",
"PBEWITHMD5AND128BITAES-CBC-OPENSSL",
"PBEWITHMD5AND192BITAES-CBC-OPENSSL",
"PBEWITHMD5AND256BITAES-CBC-OPENSSL"))
{
return(new PaddedBufferedBlockCipher(
new CbcBlockCipher(new AesFastEngine())));
}
}
}
string[] parts = algorithm.Split('/');
IBlockCipher blockCipher = null;
IAsymmetricBlockCipher asymBlockCipher = null;
IStreamCipher streamCipher = null;
string algorithmName = parts[0];
{
string aliased = (string)algorithms[algorithmName];
if (aliased != null)
{
algorithmName = aliased;
}
}
CipherAlgorithm cipherAlgorithm;
try
{
cipherAlgorithm = (CipherAlgorithm)Enums.GetEnumValue(typeof(CipherAlgorithm), algorithmName);
}
catch (ArgumentException)
{
throw new SecurityUtilityException("Cipher " + algorithm + " not recognised.");
}
switch (cipherAlgorithm)
{
case CipherAlgorithm.AES:
blockCipher = new AesFastEngine();
break;
case CipherAlgorithm.ARC4:
streamCipher = new RC4Engine();
break;
case CipherAlgorithm.BLOWFISH:
blockCipher = new BlowfishEngine();
break;
case CipherAlgorithm.CAMELLIA:
blockCipher = new CamelliaEngine();
break;
case CipherAlgorithm.CAST5:
blockCipher = new Cast5Engine();
break;
case CipherAlgorithm.CAST6:
blockCipher = new Cast6Engine();
break;
case CipherAlgorithm.DES:
blockCipher = new DesEngine();
break;
case CipherAlgorithm.DESEDE:
blockCipher = new DesEdeEngine();
break;
case CipherAlgorithm.ELGAMAL:
asymBlockCipher = new ElGamalEngine();
break;
case CipherAlgorithm.GOST28147:
blockCipher = new Gost28147Engine();
break;
case CipherAlgorithm.HC128:
streamCipher = new HC128Engine();
break;
case CipherAlgorithm.HC256:
streamCipher = new HC256Engine();
break;
case CipherAlgorithm.IDEA:
blockCipher = new IdeaEngine();
break;
case CipherAlgorithm.NOEKEON:
blockCipher = new NoekeonEngine();
break;
case CipherAlgorithm.PBEWITHSHAAND128BITRC4:
case CipherAlgorithm.PBEWITHSHAAND40BITRC4:
streamCipher = new RC4Engine();
break;
case CipherAlgorithm.RC2:
blockCipher = new RC2Engine();
break;
case CipherAlgorithm.RC5:
blockCipher = new RC532Engine();
break;
case CipherAlgorithm.RC5_64:
blockCipher = new RC564Engine();
break;
case CipherAlgorithm.RC6:
blockCipher = new RC6Engine();
break;
case CipherAlgorithm.RIJNDAEL:
blockCipher = new RijndaelEngine();
break;
case CipherAlgorithm.RSA:
asymBlockCipher = new RsaBlindedEngine();
break;
case CipherAlgorithm.SALSA20:
streamCipher = new Salsa20Engine();
break;
case CipherAlgorithm.SEED:
blockCipher = new SeedEngine();
break;
case CipherAlgorithm.SERPENT:
blockCipher = new SerpentEngine();
break;
case CipherAlgorithm.SKIPJACK:
blockCipher = new SkipjackEngine();
break;
case CipherAlgorithm.TEA:
blockCipher = new TeaEngine();
break;
case CipherAlgorithm.THREEFISH_256:
blockCipher = new ThreefishEngine(ThreefishEngine.BLOCKSIZE_256);
break;
case CipherAlgorithm.THREEFISH_512:
blockCipher = new ThreefishEngine(ThreefishEngine.BLOCKSIZE_512);
break;
case CipherAlgorithm.THREEFISH_1024:
blockCipher = new ThreefishEngine(ThreefishEngine.BLOCKSIZE_1024);
break;
case CipherAlgorithm.TNEPRES:
blockCipher = new TnepresEngine();
break;
case CipherAlgorithm.TWOFISH:
blockCipher = new TwofishEngine();
break;
case CipherAlgorithm.VMPC:
streamCipher = new VmpcEngine();
break;
case CipherAlgorithm.VMPC_KSA3:
streamCipher = new VmpcKsa3Engine();
break;
case CipherAlgorithm.XTEA:
blockCipher = new XteaEngine();
break;
default:
throw new SecurityUtilityException("Cipher " + algorithm + " not recognised.");
}
if (streamCipher != null)
{
if (parts.Length > 1)
{
throw new ArgumentException("Modes and paddings not used for stream ciphers");
}
return(new BufferedStreamCipher(streamCipher));
}
bool cts = false;
bool padded = true;
IBlockCipherPadding padding = null;
IAeadBlockCipher aeadBlockCipher = null;
if (parts.Length > 2)
{
if (streamCipher != null)
{
throw new ArgumentException("Paddings not used for stream ciphers");
}
string paddingName = parts[2];
CipherPadding cipherPadding;
if (paddingName == "")
{
cipherPadding = CipherPadding.RAW;
}
else if (paddingName == "X9.23PADDING")
{
cipherPadding = CipherPadding.X923PADDING;
}
else
{
try
{
cipherPadding = (CipherPadding)Enums.GetEnumValue(typeof(CipherPadding), paddingName);
}
catch (ArgumentException)
{
throw new SecurityUtilityException("Cipher " + algorithm + " not recognised.");
}
}
switch (cipherPadding)
{
case CipherPadding.NOPADDING:
padded = false;
break;
case CipherPadding.RAW:
break;
case CipherPadding.ISO10126PADDING:
case CipherPadding.ISO10126D2PADDING:
case CipherPadding.ISO10126_2PADDING:
padding = new ISO10126d2Padding();
break;
case CipherPadding.ISO7816_4PADDING:
case CipherPadding.ISO9797_1PADDING:
padding = new ISO7816d4Padding();
break;
case CipherPadding.ISO9796_1:
case CipherPadding.ISO9796_1PADDING:
asymBlockCipher = new ISO9796d1Encoding(asymBlockCipher);
break;
case CipherPadding.OAEP:
case CipherPadding.OAEPPADDING:
asymBlockCipher = new OaepEncoding(asymBlockCipher);
break;
case CipherPadding.OAEPWITHMD5ANDMGF1PADDING:
asymBlockCipher = new OaepEncoding(asymBlockCipher, new MD5Digest());
break;
case CipherPadding.OAEPWITHSHA1ANDMGF1PADDING:
case CipherPadding.OAEPWITHSHA_1ANDMGF1PADDING:
asymBlockCipher = new OaepEncoding(asymBlockCipher, new Sha1Digest());
break;
case CipherPadding.OAEPWITHSHA224ANDMGF1PADDING:
case CipherPadding.OAEPWITHSHA_224ANDMGF1PADDING:
asymBlockCipher = new OaepEncoding(asymBlockCipher, new Sha224Digest());
break;
case CipherPadding.OAEPWITHSHA256ANDMGF1PADDING:
case CipherPadding.OAEPWITHSHA_256ANDMGF1PADDING:
asymBlockCipher = new OaepEncoding(asymBlockCipher, new Sha256Digest());
break;
case CipherPadding.OAEPWITHSHA384ANDMGF1PADDING:
case CipherPadding.OAEPWITHSHA_384ANDMGF1PADDING:
asymBlockCipher = new OaepEncoding(asymBlockCipher, new Sha384Digest());
break;
case CipherPadding.OAEPWITHSHA512ANDMGF1PADDING:
case CipherPadding.OAEPWITHSHA_512ANDMGF1PADDING:
asymBlockCipher = new OaepEncoding(asymBlockCipher, new Sha512Digest());
break;
case CipherPadding.PKCS1:
case CipherPadding.PKCS1PADDING:
asymBlockCipher = new Pkcs1Encoding(asymBlockCipher);
break;
case CipherPadding.PKCS5:
case CipherPadding.PKCS5PADDING:
case CipherPadding.PKCS7:
case CipherPadding.PKCS7PADDING:
padding = new Pkcs7Padding();
break;
case CipherPadding.TBCPADDING:
padding = new TbcPadding();
break;
case CipherPadding.WITHCTS:
cts = true;
break;
case CipherPadding.X923PADDING:
padding = new X923Padding();
break;
case CipherPadding.ZEROBYTEPADDING:
padding = new ZeroBytePadding();
break;
default:
throw new SecurityUtilityException("Cipher " + algorithm + " not recognised.");
}
}
string mode = "";
if (parts.Length > 1)
{
mode = parts[1];
int di = GetDigitIndex(mode);
string modeName = di >= 0 ? mode.Substring(0, di) : mode;
try
{
CipherMode cipherMode = modeName == ""
? CipherMode.NONE
: (CipherMode)Enums.GetEnumValue(typeof(CipherMode), modeName);
switch (cipherMode)
{
case CipherMode.ECB:
case CipherMode.NONE:
break;
case CipherMode.CBC:
blockCipher = new CbcBlockCipher(blockCipher);
break;
case CipherMode.CCM:
aeadBlockCipher = new CcmBlockCipher(blockCipher);
break;
case CipherMode.CFB:
{
int bits = (di < 0)
? 8 * blockCipher.GetBlockSize()
: int.Parse(mode.Substring(di));
blockCipher = new CfbBlockCipher(blockCipher, bits);
break;
}
case CipherMode.CTR:
blockCipher = new SicBlockCipher(blockCipher);
break;
case CipherMode.CTS:
cts = true;
blockCipher = new CbcBlockCipher(blockCipher);
break;
case CipherMode.EAX:
aeadBlockCipher = new EaxBlockCipher(blockCipher);
break;
case CipherMode.GCM:
aeadBlockCipher = new GcmBlockCipher(blockCipher);
break;
case CipherMode.GOFB:
blockCipher = new GOfbBlockCipher(blockCipher);
break;
case CipherMode.OCB:
aeadBlockCipher = new OcbBlockCipher(blockCipher, CreateBlockCipher(cipherAlgorithm));
break;
case CipherMode.OFB:
{
int bits = (di < 0)
? 8 * blockCipher.GetBlockSize()
: int.Parse(mode.Substring(di));
blockCipher = new OfbBlockCipher(blockCipher, bits);
break;
}
case CipherMode.OPENPGPCFB:
blockCipher = new OpenPgpCfbBlockCipher(blockCipher);
break;
case CipherMode.SIC:
if (blockCipher.GetBlockSize() < 16)
{
throw new ArgumentException("Warning: SIC-Mode can become a twotime-pad if the blocksize of the cipher is too small. Use a cipher with a block size of at least 128 bits (e.g. AES)");
}
blockCipher = new SicBlockCipher(blockCipher);
break;
default:
throw new SecurityUtilityException("Cipher " + algorithm + " not recognised.");
}
}
catch (ArgumentException)
{
throw new SecurityUtilityException("Cipher " + algorithm + " not recognised.");
}
}
if (aeadBlockCipher != null)
{
if (cts)
{
throw new SecurityUtilityException("CTS mode not valid for AEAD ciphers.");
}
if (padded && parts.Length > 2 && parts[2] != "")
{
throw new SecurityUtilityException("Bad padding specified for AEAD cipher.");
}
return(new BufferedAeadBlockCipher(aeadBlockCipher));
}
if (blockCipher != null)
{
if (cts)
{
return(new CtsBlockCipher(blockCipher));
}
if (padding != null)
{
return(new PaddedBufferedBlockCipher(blockCipher, padding));
}
if (!padded || blockCipher.IsPartialBlockOkay)
{
return(new BufferedBlockCipher(blockCipher));
}
return(new PaddedBufferedBlockCipher(blockCipher));
}
if (asymBlockCipher != null)
{
return(new BufferedAsymmetricBlockCipher(asymBlockCipher));
}
throw new SecurityUtilityException("Cipher " + algorithm + " not recognised.");
}
private static void generateScriptFromCube3File(String FileName, String scriptFile)
{
Encoding encoding = Encoding.ASCII;
String decodedModel;
BitFromByte bfbObject;
PaddedBufferedBlockCipher cipher;
if (FileName != null || FileName.Length > 0)
{
try
{
using (var inFile = File.OpenRead(FileName))
using (var binaryReader = new BinaryReader(inFile))
{
inputCubeFile = binaryReader.ReadBytes((int)binaryReader.BaseStream.Length);
bool copyInputFile = true;
if (!RawCubeFile())
{
extractor = new CubeExtractor(inputCubeFile);
String rawCube3Filename = extractor.GetCubeFilename();
if (rawCube3Filename != null)
{
copyInputFile = false;
dataModel = new byte[extractor.ModelFiles[rawCube3Filename].Length];
Array.Copy(extractor.ModelFiles[rawCube3Filename], dataModel, extractor.ModelFiles[rawCube3Filename].Length);
}
}
if (copyInputFile)
{
dataModel = new byte[inputCubeFile.Length];
Array.Copy(inputCubeFile, dataModel, inputCubeFile.Length);
}
try
{
ZeroBytePadding padding = new ZeroBytePadding();
cipher = new PaddedBufferedBlockCipher(engine, padding);
// make sure buffer is a multiple of Blowfish Block size.
int leftover = dataModel.Length % cipher.GetBlockSize();
if (leftover != 0)
{
Array.Resize(ref dataModel, dataModel.Length + (cipher.GetBlockSize() - leftover));
}
// create the key parameter
Byte[] keyBytes = encoding.GetBytes(key);
KeyParameter param = new KeyParameter(encoding.GetBytes(key));
// initalize the cipher
cipher.Init(false, new KeyParameter(keyBytes));
byte[] decodedBytes = new byte[cipher.GetOutputSize(dataModel.Length)];
int decodedLength = cipher.ProcessBytes(dataModel, 0, dataModel.Length, decodedBytes, 0);
if (decodedLength % 8 == 0)
{
cipher.DoFinal(decodedBytes, decodedLength);
}
decodedModel = encoding.GetString(decodedBytes);
bfbObject = new BitFromByte(encoding, decodedBytes);
CubeScript cscript = new CubeScript(bfbObject);
System.IO.StreamWriter file = new System.IO.StreamWriter(scriptFile, false);
foreach (String line in cscript.CubeScriptLines)
{
file.WriteLine(line);
}
file.Close();
}
catch (IOException)
{
Console.WriteLine($"Unable to process CUBE3 File [{FileName}]\n\n" +
$"Was this really a CUBE3 file?");
Environment.Exit(-1);
}
}
}
catch (SecurityException ex)
{
Console.WriteLine($"Security error\n\nError message: {ex.Message}\n\n" +
$"Details:\n\n{ex.StackTrace}");
Environment.Exit(ex.HResult);
}
}
else
{
throw new SecurityException("No File specified!");
}
}
public static IBufferedCipher GetCipher(
string algorithm)
{
if (algorithm == null)
throw new ArgumentNullException("algorithm");
algorithm = Platform.ToUpperInvariant(algorithm);
{
string aliased = (string) algorithms[algorithm];
if (aliased != null)
algorithm = aliased;
}
IBasicAgreement iesAgreement = null;
if (algorithm == "IES")
{
iesAgreement = new DHBasicAgreement();
}
else if (algorithm == "ECIES")
{
iesAgreement = new ECDHBasicAgreement();
}
if (iesAgreement != null)
{
return new BufferedIesCipher(
new IesEngine(
iesAgreement,
new Kdf2BytesGenerator(
new Sha1Digest()),
new HMac(
new Sha1Digest())));
}
if (algorithm.StartsWith("PBE"))
{
if (algorithm.EndsWith("-CBC"))
{
if (algorithm == "PBEWITHSHA1ANDDES-CBC")
{
return new PaddedBufferedBlockCipher(
new CbcBlockCipher(new DesEngine()));
}
else if (algorithm == "PBEWITHSHA1ANDRC2-CBC")
{
return new PaddedBufferedBlockCipher(
new CbcBlockCipher(new RC2Engine()));
}
else if (Strings.IsOneOf(algorithm,
"PBEWITHSHAAND2-KEYTRIPLEDES-CBC", "PBEWITHSHAAND3-KEYTRIPLEDES-CBC"))
{
return new PaddedBufferedBlockCipher(
new CbcBlockCipher(new DesEdeEngine()));
}
else if (Strings.IsOneOf(algorithm,
"PBEWITHSHAAND128BITRC2-CBC", "PBEWITHSHAAND40BITRC2-CBC"))
{
return new PaddedBufferedBlockCipher(
new CbcBlockCipher(new RC2Engine()));
}
}
else if (algorithm.EndsWith("-BC") || algorithm.EndsWith("-OPENSSL"))
{
if (Strings.IsOneOf(algorithm,
"PBEWITHSHAAND128BITAES-CBC-BC",
"PBEWITHSHAAND192BITAES-CBC-BC",
"PBEWITHSHAAND256BITAES-CBC-BC",
"PBEWITHSHA256AND128BITAES-CBC-BC",
"PBEWITHSHA256AND192BITAES-CBC-BC",
"PBEWITHSHA256AND256BITAES-CBC-BC",
"PBEWITHMD5AND128BITAES-CBC-OPENSSL",
"PBEWITHMD5AND192BITAES-CBC-OPENSSL",
"PBEWITHMD5AND256BITAES-CBC-OPENSSL"))
{
return new PaddedBufferedBlockCipher(
new CbcBlockCipher(new AesFastEngine()));
}
}
}
string[] parts = algorithm.Split('/');
IBlockCipher blockCipher = null;
IAsymmetricBlockCipher asymBlockCipher = null;
IStreamCipher streamCipher = null;
string algorithmName = parts[0];
{
string aliased = (string)algorithms[algorithmName];
if (aliased != null)
algorithmName = aliased;
}
CipherAlgorithm cipherAlgorithm;
try
{
cipherAlgorithm = (CipherAlgorithm)Enums.GetEnumValue(typeof(CipherAlgorithm), algorithmName);
}
catch (ArgumentException)
{
throw new SecurityUtilityException("Cipher " + algorithm + " not recognised.");
}
switch (cipherAlgorithm)
{
case CipherAlgorithm.AES:
blockCipher = new AesFastEngine();
break;
case CipherAlgorithm.ARC4:
streamCipher = new RC4Engine();
break;
case CipherAlgorithm.BLOWFISH:
blockCipher = new BlowfishEngine();
break;
case CipherAlgorithm.CAMELLIA:
blockCipher = new CamelliaEngine();
break;
case CipherAlgorithm.CAST5:
blockCipher = new Cast5Engine();
break;
case CipherAlgorithm.CAST6:
blockCipher = new Cast6Engine();
break;
case CipherAlgorithm.DES:
blockCipher = new DesEngine();
break;
case CipherAlgorithm.DESEDE:
blockCipher = new DesEdeEngine();
break;
case CipherAlgorithm.ELGAMAL:
asymBlockCipher = new ElGamalEngine();
break;
case CipherAlgorithm.GOST28147:
blockCipher = new Gost28147Engine();
break;
case CipherAlgorithm.HC128:
streamCipher = new HC128Engine();
break;
case CipherAlgorithm.HC256:
streamCipher = new HC256Engine();
break;
case CipherAlgorithm.IDEA:
blockCipher = new IdeaEngine();
break;
case CipherAlgorithm.NOEKEON:
blockCipher = new NoekeonEngine();
break;
case CipherAlgorithm.PBEWITHSHAAND128BITRC4:
case CipherAlgorithm.PBEWITHSHAAND40BITRC4:
streamCipher = new RC4Engine();
break;
case CipherAlgorithm.RC2:
blockCipher = new RC2Engine();
break;
case CipherAlgorithm.RC5:
blockCipher = new RC532Engine();
break;
case CipherAlgorithm.RC5_64:
blockCipher = new RC564Engine();
break;
case CipherAlgorithm.RC6:
blockCipher = new RC6Engine();
break;
case CipherAlgorithm.RIJNDAEL:
blockCipher = new RijndaelEngine();
break;
case CipherAlgorithm.RSA:
asymBlockCipher = new RsaBlindedEngine();
break;
case CipherAlgorithm.SALSA20:
streamCipher = new Salsa20Engine();
break;
case CipherAlgorithm.SEED:
blockCipher = new SeedEngine();
break;
case CipherAlgorithm.SERPENT:
blockCipher = new SerpentEngine();
break;
case CipherAlgorithm.SKIPJACK:
blockCipher = new SkipjackEngine();
break;
case CipherAlgorithm.TEA:
blockCipher = new TeaEngine();
break;
case CipherAlgorithm.TWOFISH:
blockCipher = new TwofishEngine();
break;
case CipherAlgorithm.VMPC:
streamCipher = new VmpcEngine();
break;
case CipherAlgorithm.VMPC_KSA3:
streamCipher = new VmpcKsa3Engine();
break;
case CipherAlgorithm.XTEA:
blockCipher = new XteaEngine();
break;
default:
throw new SecurityUtilityException("Cipher " + algorithm + " not recognised.");
}
if (streamCipher != null)
{
if (parts.Length > 1)
throw new ArgumentException("Modes and paddings not used for stream ciphers");
return new BufferedStreamCipher(streamCipher);
}
bool cts = false;
bool padded = true;
IBlockCipherPadding padding = null;
IAeadBlockCipher aeadBlockCipher = null;
if (parts.Length > 2)
{
if (streamCipher != null)
throw new ArgumentException("Paddings not used for stream ciphers");
string paddingName = parts[2];
CipherPadding cipherPadding;
if (paddingName == "")
{
cipherPadding = CipherPadding.RAW;
}
else if (paddingName == "X9.23PADDING")
{
cipherPadding = CipherPadding.X923PADDING;
}
else
{
try
{
cipherPadding = (CipherPadding)Enums.GetEnumValue(typeof(CipherPadding), paddingName);
}
catch (ArgumentException)
{
throw new SecurityUtilityException("Cipher " + algorithm + " not recognised.");
}
}
switch (cipherPadding)
{
case CipherPadding.NOPADDING:
padded = false;
break;
case CipherPadding.RAW:
break;
case CipherPadding.ISO10126PADDING:
case CipherPadding.ISO10126D2PADDING:
case CipherPadding.ISO10126_2PADDING:
padding = new ISO10126d2Padding();
break;
case CipherPadding.ISO7816_4PADDING:
case CipherPadding.ISO9797_1PADDING:
padding = new ISO7816d4Padding();
break;
case CipherPadding.ISO9796_1:
case CipherPadding.ISO9796_1PADDING:
asymBlockCipher = new ISO9796d1Encoding(asymBlockCipher);
break;
case CipherPadding.OAEP:
case CipherPadding.OAEPPADDING:
asymBlockCipher = new OaepEncoding(asymBlockCipher);
break;
case CipherPadding.OAEPWITHMD5ANDMGF1PADDING:
asymBlockCipher = new OaepEncoding(asymBlockCipher, new MD5Digest());
break;
case CipherPadding.OAEPWITHSHA1ANDMGF1PADDING:
case CipherPadding.OAEPWITHSHA_1ANDMGF1PADDING:
asymBlockCipher = new OaepEncoding(asymBlockCipher, new Sha1Digest());
break;
case CipherPadding.OAEPWITHSHA224ANDMGF1PADDING:
case CipherPadding.OAEPWITHSHA_224ANDMGF1PADDING:
asymBlockCipher = new OaepEncoding(asymBlockCipher, new Sha224Digest());
break;
case CipherPadding.OAEPWITHSHA256ANDMGF1PADDING:
case CipherPadding.OAEPWITHSHA_256ANDMGF1PADDING:
asymBlockCipher = new OaepEncoding(asymBlockCipher, new Sha256Digest());
break;
case CipherPadding.OAEPWITHSHA384ANDMGF1PADDING:
case CipherPadding.OAEPWITHSHA_384ANDMGF1PADDING:
asymBlockCipher = new OaepEncoding(asymBlockCipher, new Sha384Digest());
break;
case CipherPadding.OAEPWITHSHA512ANDMGF1PADDING:
case CipherPadding.OAEPWITHSHA_512ANDMGF1PADDING:
asymBlockCipher = new OaepEncoding(asymBlockCipher, new Sha512Digest());
break;
case CipherPadding.PKCS1:
case CipherPadding.PKCS1PADDING:
asymBlockCipher = new Pkcs1Encoding(asymBlockCipher);
break;
case CipherPadding.PKCS5:
case CipherPadding.PKCS5PADDING:
case CipherPadding.PKCS7:
case CipherPadding.PKCS7PADDING:
padding = new Pkcs7Padding();
break;
case CipherPadding.TBCPADDING:
padding = new TbcPadding();
break;
case CipherPadding.WITHCTS:
cts = true;
break;
case CipherPadding.X923PADDING:
padding = new X923Padding();
break;
case CipherPadding.ZEROBYTEPADDING:
padding = new ZeroBytePadding();
break;
default:
throw new SecurityUtilityException("Cipher " + algorithm + " not recognised.");
}
}
string mode = "";
if (parts.Length > 1)
{
mode = parts[1];
int di = GetDigitIndex(mode);
string modeName = di >= 0 ? mode.Substring(0, di) : mode;
try
{
CipherMode cipherMode = modeName == ""
? CipherMode.NONE
: (CipherMode)Enums.GetEnumValue(typeof(CipherMode), modeName);
switch (cipherMode)
{
case CipherMode.ECB:
case CipherMode.NONE:
break;
case CipherMode.CBC:
blockCipher = new CbcBlockCipher(blockCipher);
break;
case CipherMode.CFB:
{
int bits = (di < 0)
? 8 * blockCipher.GetBlockSize()
: int.Parse(mode.Substring(di));
blockCipher = new CfbBlockCipher(blockCipher, bits);
break;
}
case CipherMode.CTR:
blockCipher = new SicBlockCipher(blockCipher);
break;
case CipherMode.CTS:
cts = true;
blockCipher = new CbcBlockCipher(blockCipher);
break;
case CipherMode.EAX:
aeadBlockCipher = new EaxBlockCipher(blockCipher);
break;
case CipherMode.GCM:
aeadBlockCipher = new GcmBlockCipher(blockCipher);
break;
case CipherMode.GOFB:
blockCipher = new GOfbBlockCipher(blockCipher);
break;
case CipherMode.OCB:
aeadBlockCipher = new OcbBlockCipher(blockCipher, CreateBlockCipher(cipherAlgorithm));
break;
case CipherMode.OFB:
{
int bits = (di < 0)
? 8 * blockCipher.GetBlockSize()
: int.Parse(mode.Substring(di));
blockCipher = new OfbBlockCipher(blockCipher, bits);
break;
}
case CipherMode.OPENPGPCFB:
blockCipher = new OpenPgpCfbBlockCipher(blockCipher);
break;
case CipherMode.SIC:
if (blockCipher.GetBlockSize() < 16)
{
throw new ArgumentException("Warning: SIC-Mode can become a twotime-pad if the blocksize of the cipher is too small. Use a cipher with a block size of at least 128 bits (e.g. AES)");
}
blockCipher = new SicBlockCipher(blockCipher);
break;
default:
throw new SecurityUtilityException("Cipher " + algorithm + " not recognised.");
}
}
catch (ArgumentException)
{
throw new SecurityUtilityException("Cipher " + algorithm + " not recognised.");
}
}
if (aeadBlockCipher != null)
{
if (cts)
throw new SecurityUtilityException("CTS mode not valid for AEAD ciphers.");
if (padded && parts.Length > 2 && parts[2] != "")
throw new SecurityUtilityException("Bad padding specified for AEAD cipher.");
return new BufferedAeadBlockCipher(aeadBlockCipher);
}
if (blockCipher != null)
{
if (cts)
{
return new CtsBlockCipher(blockCipher);
}
if (padding != null)
{
return new PaddedBufferedBlockCipher(blockCipher, padding);
}
if (!padded || blockCipher.IsPartialBlockOkay)
{
return new BufferedBlockCipher(blockCipher);
}
return new PaddedBufferedBlockCipher(blockCipher);
}
if (asymBlockCipher != null)
{
return new BufferedAsymmetricBlockCipher(asymBlockCipher);
}
throw new SecurityUtilityException("Cipher " + algorithm + " not recognised.");
}
public static IBufferedCipher GetCipher(
string algorithm)
{
if (algorithm == null)
{
throw new ArgumentNullException("algorithm");
}
algorithm = algorithm.ToUpper(CultureInfo.InvariantCulture);
string aliased = (string)algorithms[algorithm];
if (aliased != null)
{
algorithm = aliased;
}
IBasicAgreement iesAgreement = null;
if (algorithm == "IES")
{
iesAgreement = new DHBasicAgreement();
}
else if (algorithm == "ECIES")
{
iesAgreement = new ECDHBasicAgreement();
}
if (iesAgreement != null)
{
return(new BufferedIesCipher(
new IesEngine(
iesAgreement,
new Kdf2BytesGenerator(
new Sha1Digest()),
new HMac(
new Sha1Digest()))));
}
if (algorithm.StartsWith("PBE"))
{
switch (algorithm)
{
case "PBEWITHSHAAND2-KEYTRIPLEDES-CBC":
case "PBEWITHSHAAND3-KEYTRIPLEDES-CBC":
return(new PaddedBufferedBlockCipher(
new CbcBlockCipher(new DesEdeEngine())));
case "PBEWITHSHAAND128BITRC2-CBC":
case "PBEWITHSHAAND40BITRC2-CBC":
return(new PaddedBufferedBlockCipher(
new CbcBlockCipher(new RC2Engine())));
case "PBEWITHSHAAND128BITAES-CBC-BC":
case "PBEWITHSHAAND192BITAES-CBC-BC":
case "PBEWITHSHAAND256BITAES-CBC-BC":
case "PBEWITHSHA256AND128BITAES-CBC-BC":
case "PBEWITHSHA256AND192BITAES-CBC-BC":
case "PBEWITHSHA256AND256BITAES-CBC-BC":
case "PBEWITHMD5AND128BITAES-CBC-OPENSSL":
case "PBEWITHMD5AND192BITAES-CBC-OPENSSL":
case "PBEWITHMD5AND256BITAES-CBC-OPENSSL":
return(new PaddedBufferedBlockCipher(
new CbcBlockCipher(new AesFastEngine())));
case "PBEWITHSHA1ANDDES-CBC":
return(new PaddedBufferedBlockCipher(
new CbcBlockCipher(new DesEngine())));
case "PBEWITHSHA1ANDRC2-CBC":
return(new PaddedBufferedBlockCipher(
new CbcBlockCipher(new RC2Engine())));
}
}
string[] parts = algorithm.Split('/');
IBlockCipher blockCipher = null;
IAsymmetricBlockCipher asymBlockCipher = null;
IStreamCipher streamCipher = null;
switch (parts[0])
{
case "AES":
blockCipher = new AesFastEngine();
break;
case "ARC4":
streamCipher = new RC4Engine();
break;
case "BLOWFISH":
blockCipher = new BlowfishEngine();
break;
case "CAMELLIA":
blockCipher = new CamelliaEngine();
break;
case "CAST5":
blockCipher = new Cast5Engine();
break;
case "CAST6":
blockCipher = new Cast6Engine();
break;
case "DES":
blockCipher = new DesEngine();
break;
case "DESEDE":
blockCipher = new DesEdeEngine();
break;
case "ELGAMAL":
asymBlockCipher = new ElGamalEngine();
break;
case "GOST28147":
blockCipher = new Gost28147Engine();
break;
case "HC128":
streamCipher = new HC128Engine();
break;
case "HC256":
streamCipher = new HC256Engine();
break;
#if INCLUDE_IDEA
case "IDEA":
blockCipher = new IdeaEngine();
break;
#endif
case "NOEKEON":
blockCipher = new NoekeonEngine();
break;
case "PBEWITHSHAAND128BITRC4":
case "PBEWITHSHAAND40BITRC4":
streamCipher = new RC4Engine();
break;
case "RC2":
blockCipher = new RC2Engine();
break;
case "RC5":
blockCipher = new RC532Engine();
break;
case "RC5-64":
blockCipher = new RC564Engine();
break;
case "RC6":
blockCipher = new RC6Engine();
break;
case "RIJNDAEL":
blockCipher = new RijndaelEngine();
break;
case "RSA":
asymBlockCipher = new RsaBlindedEngine();
break;
case "SALSA20":
streamCipher = new Salsa20Engine();
break;
case "SEED":
blockCipher = new SeedEngine();
break;
case "SERPENT":
blockCipher = new SerpentEngine();
break;
case "SKIPJACK":
blockCipher = new SkipjackEngine();
break;
case "TEA":
blockCipher = new TeaEngine();
break;
case "TWOFISH":
blockCipher = new TwofishEngine();
break;
case "VMPC":
streamCipher = new VmpcEngine();
break;
case "VMPC-KSA3":
streamCipher = new VmpcKsa3Engine();
break;
case "XTEA":
blockCipher = new XteaEngine();
break;
default:
throw new SecurityUtilityException("Cipher " + algorithm + " not recognised.");
}
if (streamCipher != null)
{
if (parts.Length > 1)
{
throw new ArgumentException("Modes and paddings not used for stream ciphers");
}
return(new BufferedStreamCipher(streamCipher));
}
bool cts = false;
bool padded = true;
IBlockCipherPadding padding = null;
IAeadBlockCipher aeadBlockCipher = null;
if (parts.Length > 2)
{
if (streamCipher != null)
{
throw new ArgumentException("Paddings not used for stream ciphers");
}
switch (parts[2])
{
case "NOPADDING":
padded = false;
break;
case "":
case "RAW":
break;
case "ISO10126PADDING":
case "ISO10126D2PADDING":
case "ISO10126-2PADDING":
padding = new ISO10126d2Padding();
break;
case "ISO7816-4PADDING":
case "ISO9797-1PADDING":
padding = new ISO7816d4Padding();
break;
case "ISO9796-1":
case "ISO9796-1PADDING":
asymBlockCipher = new ISO9796d1Encoding(asymBlockCipher);
break;
case "OAEP":
case "OAEPPADDING":
asymBlockCipher = new OaepEncoding(asymBlockCipher);
break;
case "OAEPWITHMD5ANDMGF1PADDING":
asymBlockCipher = new OaepEncoding(asymBlockCipher, new MD5Digest());
break;
case "OAEPWITHSHA1ANDMGF1PADDING":
case "OAEPWITHSHA-1ANDMGF1PADDING":
asymBlockCipher = new OaepEncoding(asymBlockCipher, new Sha1Digest());
break;
case "OAEPWITHSHA224ANDMGF1PADDING":
case "OAEPWITHSHA-224ANDMGF1PADDING":
asymBlockCipher = new OaepEncoding(asymBlockCipher, new Sha224Digest());
break;
case "OAEPWITHSHA256ANDMGF1PADDING":
case "OAEPWITHSHA-256ANDMGF1PADDING":
asymBlockCipher = new OaepEncoding(asymBlockCipher, new Sha256Digest());
break;
case "OAEPWITHSHA384ANDMGF1PADDING":
case "OAEPWITHSHA-384ANDMGF1PADDING":
asymBlockCipher = new OaepEncoding(asymBlockCipher, new Sha384Digest());
break;
case "OAEPWITHSHA512ANDMGF1PADDING":
case "OAEPWITHSHA-512ANDMGF1PADDING":
asymBlockCipher = new OaepEncoding(asymBlockCipher, new Sha512Digest());
break;
case "PKCS1":
case "PKCS1PADDING":
asymBlockCipher = new Pkcs1Encoding(asymBlockCipher);
break;
case "PKCS5":
case "PKCS5PADDING":
case "PKCS7":
case "PKCS7PADDING":
// NB: Padding defaults to Pkcs7Padding already
break;
case "TBCPADDING":
padding = new TbcPadding();
break;
case "WITHCTS":
cts = true;
break;
case "X9.23PADDING":
case "X923PADDING":
padding = new X923Padding();
break;
case "ZEROBYTEPADDING":
padding = new ZeroBytePadding();
break;
default:
throw new SecurityUtilityException("Cipher " + algorithm + " not recognised.");
}
}
string mode = "";
if (parts.Length > 1)
{
mode = parts[1];
int di = GetDigitIndex(mode);
string modeName = di >= 0 ? mode.Substring(0, di) : mode;
switch (modeName)
{
case "":
case "ECB":
case "NONE":
break;
case "CBC":
blockCipher = new CbcBlockCipher(blockCipher);
break;
case "CCM":
aeadBlockCipher = new CcmBlockCipher(blockCipher);
break;
case "CFB":
{
int bits = (di < 0)
? 8 * blockCipher.GetBlockSize()
: int.Parse(mode.Substring(di));
blockCipher = new CfbBlockCipher(blockCipher, bits);
break;
}
case "CTR":
blockCipher = new SicBlockCipher(blockCipher);
break;
case "CTS":
cts = true;
blockCipher = new CbcBlockCipher(blockCipher);
break;
case "EAX":
aeadBlockCipher = new EaxBlockCipher(blockCipher);
break;
case "GCM":
aeadBlockCipher = new GcmBlockCipher(blockCipher);
break;
case "GOFB":
blockCipher = new GOfbBlockCipher(blockCipher);
break;
case "OFB":
{
int bits = (di < 0)
? 8 * blockCipher.GetBlockSize()
: int.Parse(mode.Substring(di));
blockCipher = new OfbBlockCipher(blockCipher, bits);
break;
}
case "OPENPGPCFB":
blockCipher = new OpenPgpCfbBlockCipher(blockCipher);
break;
case "SIC":
if (blockCipher.GetBlockSize() < 16)
{
throw new ArgumentException("Warning: SIC-Mode can become a twotime-pad if the blocksize of the cipher is too small. Use a cipher with a block size of at least 128 bits (e.g. AES)");
}
blockCipher = new SicBlockCipher(blockCipher);
break;
default:
throw new SecurityUtilityException("Cipher " + algorithm + " not recognised.");
}
}
if (aeadBlockCipher != null)
{
if (cts)
{
throw new SecurityUtilityException("CTS mode not valid for AEAD ciphers.");
}
if (padded && parts.Length > 1 && parts[2] != "")
{
throw new SecurityUtilityException("Bad padding specified for AEAD cipher.");
}
return(new BufferedAeadBlockCipher(aeadBlockCipher));
}
if (blockCipher != null)
{
if (cts)
{
return(new CtsBlockCipher(blockCipher));
}
if (!padded || blockCipher.IsPartialBlockOkay)
{
return(new BufferedBlockCipher(blockCipher));
}
if (padding != null)
{
return(new PaddedBufferedBlockCipher(blockCipher, padding));
}
return(new PaddedBufferedBlockCipher(blockCipher));
}
if (asymBlockCipher != null)
{
return(new BufferedAsymmetricBlockCipher(asymBlockCipher));
}
throw new SecurityUtilityException("Cipher " + algorithm + " not recognised.");
}
private static void generateBFBFromCube3File(String FileName, String bfbFileName, Boolean xmlMode)
{
Encoding encoding = Encoding.ASCII;
String decodedModel;
BitFromByte bfbObject;
PaddedBufferedBlockCipher cipher;
if (FileName != null || FileName.Length > 0)
{
try
{
using (var inFile = File.OpenRead(FileName))
using (var binaryReader = new BinaryReader(inFile))
{
inputCube3File = binaryReader.ReadBytes((int)binaryReader.BaseStream.Length);
bool copyInputFile = true;
if (!RawCubeFile())
{
extractor = new CubeExtractor(inputCube3File);
String rawCube3Filename = extractor.GetCubeFilename();
if (rawCube3Filename != null)
{
copyInputFile = false;
dataModel = new byte[extractor.ModelFiles[rawCube3Filename].Length];
Array.Copy(extractor.ModelFiles[rawCube3Filename], dataModel, extractor.ModelFiles[rawCube3Filename].Length);
}
}
if (copyInputFile)
{
dataModel = new byte[inputCube3File.Length];
Array.Copy(inputCube3File, dataModel, inputCube3File.Length);
}
try
{
ZeroBytePadding padding = new ZeroBytePadding();
cipher = new PaddedBufferedBlockCipher(engine, padding);
// make sure buffer is a multiple of Blowfish Block size.
int leftover = dataModel.Length % cipher.GetBlockSize();
if (leftover != 0)
{
Array.Resize(ref dataModel, dataModel.Length + (cipher.GetBlockSize() - leftover));
}
// create the key parameter
Byte[] keyBytes = encoding.GetBytes(key);
KeyParameter param = new KeyParameter(encoding.GetBytes(key));
// initalize the cipher
cipher.Init(false, new KeyParameter(keyBytes));
byte[] decodedBytes = new byte[cipher.GetOutputSize(dataModel.Length)];
int decodedLength = cipher.ProcessBytes(dataModel, 0, dataModel.Length, decodedBytes, 0);
if (decodedLength % 8 == 0)
{
cipher.DoFinal(decodedBytes, decodedLength);
}
decodedModel = encoding.GetString(decodedBytes);
if (xmlMode)
{
int endXmlIndex = decodedModel.LastIndexOf('>');
//if (endXmlIndex < decodedModel.Length - 1)
//{
// decodedModel = decodedModel.Substring(0, endXmlIndex + 1);
//}
}
string[] seperator = new string[] { "\r\n" };
string[] decodedModelArray = decodedModel.Split(seperator, StringSplitOptions.RemoveEmptyEntries);
List <String> bfbStringList;
if (xmlMode)
{
bfbStringList = decodedModelArray.ToList();
}
else
{
bfbObject = new BitFromByte(encoding, decodedBytes);
bfbStringList = bfbObject.BfbLines;
}
System.IO.StreamWriter file = new System.IO.StreamWriter(bfbFileName, false);
int numBFBLines = 0;
foreach (string bfbLine in bfbStringList)
{
numBFBLines++;
if (numBFBLines < bfbStringList.Count)
{
file.WriteLine(bfbLine);
}
else
{
file.Write(bfbLine);
}
}
file.Close();
}
catch (IOException)
{
Console.WriteLine($"Unable to process CUBE3 File [{FileName}]\n\n" +
$"Was this really a CUBE3 file?");
Environment.Exit(-1);
}
}
}
catch (SecurityException ex)
{
Console.WriteLine($"Security error\n\nError message: {ex.Message}\n\n" +
$"Details:\n\n{ex.StackTrace}");
Environment.Exit(ex.HResult);
}
}
else
{
throw new SecurityException("No File specified!");
}
}
public static IBufferedCipher GetCipher(string algorithm)
{
//IL_0008: Unknown result type (might be due to invalid IL or missing references)
//IL_0469: Unknown result type (might be due to invalid IL or missing references)
//IL_0495: Unknown result type (might be due to invalid IL or missing references)
//IL_07f1: Unknown result type (might be due to invalid IL or missing references)
if (algorithm == null)
{
throw new ArgumentNullException("algorithm");
}
algorithm = Platform.ToUpperInvariant(algorithm);
string text = (string)algorithms.get_Item((object)algorithm);
if (text != null)
{
algorithm = text;
}
IBasicAgreement basicAgreement = null;
if (algorithm == "IES")
{
basicAgreement = new DHBasicAgreement();
}
else if (algorithm == "ECIES")
{
basicAgreement = new ECDHBasicAgreement();
}
if (basicAgreement != null)
{
return(new BufferedIesCipher(new IesEngine(basicAgreement, new Kdf2BytesGenerator(new Sha1Digest()), new HMac(new Sha1Digest()))));
}
if (Platform.StartsWith(algorithm, "PBE"))
{
if (Platform.EndsWith(algorithm, "-CBC"))
{
if (algorithm == "PBEWITHSHA1ANDDES-CBC")
{
return(new PaddedBufferedBlockCipher(new CbcBlockCipher(new DesEngine())));
}
if (algorithm == "PBEWITHSHA1ANDRC2-CBC")
{
return(new PaddedBufferedBlockCipher(new CbcBlockCipher(new RC2Engine())));
}
if (Strings.IsOneOf(algorithm, "PBEWITHSHAAND2-KEYTRIPLEDES-CBC", "PBEWITHSHAAND3-KEYTRIPLEDES-CBC"))
{
return(new PaddedBufferedBlockCipher(new CbcBlockCipher(new DesEdeEngine())));
}
if (Strings.IsOneOf(algorithm, "PBEWITHSHAAND128BITRC2-CBC", "PBEWITHSHAAND40BITRC2-CBC"))
{
return(new PaddedBufferedBlockCipher(new CbcBlockCipher(new RC2Engine())));
}
}
else if ((Platform.EndsWith(algorithm, "-BC") || Platform.EndsWith(algorithm, "-OPENSSL")) && Strings.IsOneOf(algorithm, "PBEWITHSHAAND128BITAES-CBC-BC", "PBEWITHSHAAND192BITAES-CBC-BC", "PBEWITHSHAAND256BITAES-CBC-BC", "PBEWITHSHA256AND128BITAES-CBC-BC", "PBEWITHSHA256AND192BITAES-CBC-BC", "PBEWITHSHA256AND256BITAES-CBC-BC", "PBEWITHMD5AND128BITAES-CBC-OPENSSL", "PBEWITHMD5AND192BITAES-CBC-OPENSSL", "PBEWITHMD5AND256BITAES-CBC-OPENSSL"))
{
return(new PaddedBufferedBlockCipher(new CbcBlockCipher(new AesFastEngine())));
}
}
string[] array = algorithm.Split(new char[1] {
'/'
});
IBlockCipher blockCipher = null;
IAsymmetricBlockCipher asymmetricBlockCipher = null;
IStreamCipher streamCipher = null;
string text2 = array[0];
string text3 = (string)algorithms.get_Item((object)text2);
if (text3 != null)
{
text2 = text3;
}
CipherAlgorithm cipherAlgorithm;
try
{
cipherAlgorithm = (CipherAlgorithm)Enums.GetEnumValue(typeof(CipherAlgorithm), text2);
}
catch (ArgumentException)
{
throw new SecurityUtilityException("Cipher " + algorithm + " not recognised.");
}
switch (cipherAlgorithm)
{
case CipherAlgorithm.AES:
blockCipher = new AesFastEngine();
break;
case CipherAlgorithm.ARC4:
streamCipher = new RC4Engine();
break;
case CipherAlgorithm.BLOWFISH:
blockCipher = new BlowfishEngine();
break;
case CipherAlgorithm.CAMELLIA:
blockCipher = new CamelliaEngine();
break;
case CipherAlgorithm.CAST5:
blockCipher = new Cast5Engine();
break;
case CipherAlgorithm.CAST6:
blockCipher = new Cast6Engine();
break;
case CipherAlgorithm.DES:
blockCipher = new DesEngine();
break;
case CipherAlgorithm.DESEDE:
blockCipher = new DesEdeEngine();
break;
case CipherAlgorithm.ELGAMAL:
asymmetricBlockCipher = new ElGamalEngine();
break;
case CipherAlgorithm.GOST28147:
blockCipher = new Gost28147Engine();
break;
case CipherAlgorithm.HC128:
streamCipher = new HC128Engine();
break;
case CipherAlgorithm.HC256:
streamCipher = new HC256Engine();
break;
case CipherAlgorithm.IDEA:
blockCipher = new IdeaEngine();
break;
case CipherAlgorithm.NOEKEON:
blockCipher = new NoekeonEngine();
break;
case CipherAlgorithm.PBEWITHSHAAND128BITRC4:
case CipherAlgorithm.PBEWITHSHAAND40BITRC4:
streamCipher = new RC4Engine();
break;
case CipherAlgorithm.RC2:
blockCipher = new RC2Engine();
break;
case CipherAlgorithm.RC5:
blockCipher = new RC532Engine();
break;
case CipherAlgorithm.RC5_64:
blockCipher = new RC564Engine();
break;
case CipherAlgorithm.RC6:
blockCipher = new RC6Engine();
break;
case CipherAlgorithm.RIJNDAEL:
blockCipher = new RijndaelEngine();
break;
case CipherAlgorithm.RSA:
asymmetricBlockCipher = new RsaBlindedEngine();
break;
case CipherAlgorithm.SALSA20:
streamCipher = new Salsa20Engine();
break;
case CipherAlgorithm.SEED:
blockCipher = new SeedEngine();
break;
case CipherAlgorithm.SERPENT:
blockCipher = new SerpentEngine();
break;
case CipherAlgorithm.SKIPJACK:
blockCipher = new SkipjackEngine();
break;
case CipherAlgorithm.TEA:
blockCipher = new TeaEngine();
break;
case CipherAlgorithm.THREEFISH_256:
blockCipher = new ThreefishEngine(256);
break;
case CipherAlgorithm.THREEFISH_512:
blockCipher = new ThreefishEngine(512);
break;
case CipherAlgorithm.THREEFISH_1024:
blockCipher = new ThreefishEngine(1024);
break;
case CipherAlgorithm.TNEPRES:
blockCipher = new TnepresEngine();
break;
case CipherAlgorithm.TWOFISH:
blockCipher = new TwofishEngine();
break;
case CipherAlgorithm.VMPC:
streamCipher = new VmpcEngine();
break;
case CipherAlgorithm.VMPC_KSA3:
streamCipher = new VmpcKsa3Engine();
break;
case CipherAlgorithm.XTEA:
blockCipher = new XteaEngine();
break;
default:
throw new SecurityUtilityException("Cipher " + algorithm + " not recognised.");
}
if (streamCipher != null)
{
if (array.Length > 1)
{
throw new ArgumentException("Modes and paddings not used for stream ciphers");
}
return(new BufferedStreamCipher(streamCipher));
}
bool flag = false;
bool flag2 = true;
IBlockCipherPadding blockCipherPadding = null;
IAeadBlockCipher aeadBlockCipher = null;
if (array.Length > 2)
{
if (streamCipher != null)
{
throw new ArgumentException("Paddings not used for stream ciphers");
}
string text4 = array[2];
CipherPadding cipherPadding;
if (text4 == "")
{
cipherPadding = CipherPadding.RAW;
}
else if (text4 == "X9.23PADDING")
{
cipherPadding = CipherPadding.X923PADDING;
}
else
{
try
{
cipherPadding = (CipherPadding)Enums.GetEnumValue(typeof(CipherPadding), text4);
}
catch (ArgumentException)
{
throw new SecurityUtilityException("Cipher " + algorithm + " not recognised.");
}
}
switch (cipherPadding)
{
case CipherPadding.NOPADDING:
flag2 = false;
break;
case CipherPadding.ISO10126PADDING:
case CipherPadding.ISO10126D2PADDING:
case CipherPadding.ISO10126_2PADDING:
blockCipherPadding = new ISO10126d2Padding();
break;
case CipherPadding.ISO7816_4PADDING:
case CipherPadding.ISO9797_1PADDING:
blockCipherPadding = new ISO7816d4Padding();
break;
case CipherPadding.ISO9796_1:
case CipherPadding.ISO9796_1PADDING:
asymmetricBlockCipher = new ISO9796d1Encoding(asymmetricBlockCipher);
break;
case CipherPadding.OAEP:
case CipherPadding.OAEPPADDING:
asymmetricBlockCipher = new OaepEncoding(asymmetricBlockCipher);
break;
case CipherPadding.OAEPWITHMD5ANDMGF1PADDING:
asymmetricBlockCipher = new OaepEncoding(asymmetricBlockCipher, new MD5Digest());
break;
case CipherPadding.OAEPWITHSHA1ANDMGF1PADDING:
case CipherPadding.OAEPWITHSHA_1ANDMGF1PADDING:
asymmetricBlockCipher = new OaepEncoding(asymmetricBlockCipher, new Sha1Digest());
break;
case CipherPadding.OAEPWITHSHA224ANDMGF1PADDING:
case CipherPadding.OAEPWITHSHA_224ANDMGF1PADDING:
asymmetricBlockCipher = new OaepEncoding(asymmetricBlockCipher, new Sha224Digest());
break;
case CipherPadding.OAEPWITHSHA256ANDMGF1PADDING:
case CipherPadding.OAEPWITHSHA_256ANDMGF1PADDING:
asymmetricBlockCipher = new OaepEncoding(asymmetricBlockCipher, new Sha256Digest());
break;
case CipherPadding.OAEPWITHSHA384ANDMGF1PADDING:
case CipherPadding.OAEPWITHSHA_384ANDMGF1PADDING:
asymmetricBlockCipher = new OaepEncoding(asymmetricBlockCipher, new Sha384Digest());
break;
case CipherPadding.OAEPWITHSHA512ANDMGF1PADDING:
case CipherPadding.OAEPWITHSHA_512ANDMGF1PADDING:
asymmetricBlockCipher = new OaepEncoding(asymmetricBlockCipher, new Sha512Digest());
break;
case CipherPadding.PKCS1:
case CipherPadding.PKCS1PADDING:
asymmetricBlockCipher = new Pkcs1Encoding(asymmetricBlockCipher);
break;
case CipherPadding.PKCS5:
case CipherPadding.PKCS5PADDING:
case CipherPadding.PKCS7:
case CipherPadding.PKCS7PADDING:
blockCipherPadding = new Pkcs7Padding();
break;
case CipherPadding.TBCPADDING:
blockCipherPadding = new TbcPadding();
break;
case CipherPadding.WITHCTS:
flag = true;
break;
case CipherPadding.X923PADDING:
blockCipherPadding = new X923Padding();
break;
case CipherPadding.ZEROBYTEPADDING:
blockCipherPadding = new ZeroBytePadding();
break;
default:
throw new SecurityUtilityException("Cipher " + algorithm + " not recognised.");
case CipherPadding.RAW:
break;
}
}
string text5 = "";
if (array.Length > 1)
{
text5 = array[1];
int digitIndex = GetDigitIndex(text5);
string text6 = ((digitIndex >= 0) ? text5.Substring(0, digitIndex) : text5);
try
{
switch ((text6 == "") ? CipherMode.NONE : ((CipherMode)Enums.GetEnumValue(typeof(CipherMode), text6)))
{
case CipherMode.CBC:
blockCipher = new CbcBlockCipher(blockCipher);
break;
case CipherMode.CCM:
aeadBlockCipher = new CcmBlockCipher(blockCipher);
break;
case CipherMode.CFB:
{
int bitBlockSize = ((digitIndex < 0) ? (8 * blockCipher.GetBlockSize()) : int.Parse(text5.Substring(digitIndex)));
blockCipher = new CfbBlockCipher(blockCipher, bitBlockSize);
break;
}
case CipherMode.CTR:
blockCipher = new SicBlockCipher(blockCipher);
break;
case CipherMode.CTS:
flag = true;
blockCipher = new CbcBlockCipher(blockCipher);
break;
case CipherMode.EAX:
aeadBlockCipher = new EaxBlockCipher(blockCipher);
break;
case CipherMode.GCM:
aeadBlockCipher = new GcmBlockCipher(blockCipher);
break;
case CipherMode.GOFB:
blockCipher = new GOfbBlockCipher(blockCipher);
break;
case CipherMode.OCB:
aeadBlockCipher = new OcbBlockCipher(blockCipher, CreateBlockCipher(cipherAlgorithm));
break;
case CipherMode.OFB:
{
int blockSize = ((digitIndex < 0) ? (8 * blockCipher.GetBlockSize()) : int.Parse(text5.Substring(digitIndex)));
blockCipher = new OfbBlockCipher(blockCipher, blockSize);
break;
}
case CipherMode.OPENPGPCFB:
blockCipher = new OpenPgpCfbBlockCipher(blockCipher);
break;
case CipherMode.SIC:
if (blockCipher.GetBlockSize() < 16)
{
throw new ArgumentException("Warning: SIC-Mode can become a twotime-pad if the blocksize of the cipher is too small. Use a cipher with a block size of at least 128 bits (e.g. AES)");
}
blockCipher = new SicBlockCipher(blockCipher);
break;
default:
throw new SecurityUtilityException("Cipher " + algorithm + " not recognised.");
case CipherMode.ECB:
case CipherMode.NONE:
break;
}
}
catch (ArgumentException)
{
throw new SecurityUtilityException("Cipher " + algorithm + " not recognised.");
}
}
if (aeadBlockCipher != null)
{
if (flag)
{
throw new SecurityUtilityException("CTS mode not valid for AEAD ciphers.");
}
if (flag2 && array.Length > 2 && array[2] != "")
{
throw new SecurityUtilityException("Bad padding specified for AEAD cipher.");
}
return(new BufferedAeadBlockCipher(aeadBlockCipher));
}
if (blockCipher != null)
{
if (flag)
{
return(new CtsBlockCipher(blockCipher));
}
if (blockCipherPadding != null)
{
return(new PaddedBufferedBlockCipher(blockCipher, blockCipherPadding));
}
if (!flag2 || blockCipher.IsPartialBlockOkay)
{
return(new BufferedBlockCipher(blockCipher));
}
return(new PaddedBufferedBlockCipher(blockCipher));
}
if (asymmetricBlockCipher != null)
{
return(new BufferedAsymmetricBlockCipher(asymmetricBlockCipher));
}
throw new SecurityUtilityException("Cipher " + algorithm + " not recognised.");
}
private static void generateCube3FromBFBFile(String FileName, String cube3FileName)
{
Encoding encoding = Encoding.ASCII;
PaddedBufferedBlockCipher cipher;
if (FileName != null || FileName.Length > 0)
{
try
{
using (var inFile = File.OpenRead(FileName))
using (var streamReader = new StreamReader(inFile))
{
var inputBFBFile = streamReader.ReadToEnd();
try
{
ZeroBytePadding padding = new ZeroBytePadding();
cipher = new PaddedBufferedBlockCipher(engine, padding);
// create the key parameter
Byte[] keyBytes = encoding.GetBytes(key);
KeyParameter param = new KeyParameter(encoding.GetBytes(key));
// initalize the cipher
cipher.Init(true, new KeyParameter(keyBytes));
Byte[] newDataModel = encoding.GetBytes(inputBFBFile);
Byte[] encodedBytes = new Byte[cipher.GetOutputSize(newDataModel.Length)];
int encodedLength = cipher.ProcessBytes(newDataModel, 0, newDataModel.Length, encodedBytes, 0);
cipher.DoFinal(encodedBytes, encodedLength);
FileBackup.MakeBackup(cube3FileName, 5);
using (var outFile = File.OpenWrite(cube3FileName))
using (var binaryWriter = new BinaryWriter(outFile))
{
binaryWriter.Write(encodedBytes);
outFile.Close();
}
}
catch (IOException)
{
Console.WriteLine($"Unable to process BFB File [{FileName}] or unable to open output file [{cube3FileName}]");
Environment.Exit(-1);
}
}
}
catch (SecurityException ex)
{
Console.WriteLine($"Security error\n\nError message: {ex.Message}\n\n" +
$"Details:\n\n{ex.StackTrace}");
Environment.Exit(ex.HResult);
}
}
else
{
throw new SecurityException("No File specified!");
}
}
