Inheritance: IBlockCipher
Esempio n. 1
0
 private int processBlock192or256(byte[] input, int inOff, byte[] output, int outOff)
 {
     for (int i = 0; i < 4; i++)
     {
         this.state[i]  = CamelliaEngine.bytes2uint(input, inOff + i * 4);
         this.state[i] ^= this.kw[i];
     }
     CamelliaEngine.camelliaF2(this.state, this.subkey, 0);
     CamelliaEngine.camelliaF2(this.state, this.subkey, 4);
     CamelliaEngine.camelliaF2(this.state, this.subkey, 8);
     CamelliaEngine.camelliaFLs(this.state, this.ke, 0);
     CamelliaEngine.camelliaF2(this.state, this.subkey, 12);
     CamelliaEngine.camelliaF2(this.state, this.subkey, 16);
     CamelliaEngine.camelliaF2(this.state, this.subkey, 20);
     CamelliaEngine.camelliaFLs(this.state, this.ke, 4);
     CamelliaEngine.camelliaF2(this.state, this.subkey, 24);
     CamelliaEngine.camelliaF2(this.state, this.subkey, 28);
     CamelliaEngine.camelliaF2(this.state, this.subkey, 32);
     CamelliaEngine.camelliaFLs(this.state, this.ke, 8);
     CamelliaEngine.camelliaF2(this.state, this.subkey, 36);
     CamelliaEngine.camelliaF2(this.state, this.subkey, 40);
     CamelliaEngine.camelliaF2(this.state, this.subkey, 44);
     this.state[2] ^= this.kw[4];
     this.state[3] ^= this.kw[5];
     this.state[0] ^= this.kw[6];
     this.state[1] ^= this.kw[7];
     CamelliaEngine.uint2bytes(this.state[2], output, outOff);
     CamelliaEngine.uint2bytes(this.state[3], output, outOff + 4);
     CamelliaEngine.uint2bytes(this.state[0], output, outOff + 8);
     CamelliaEngine.uint2bytes(this.state[1], output, outOff + 12);
     return(16);
 }
Esempio n. 2
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 private static void camelliaFLs(uint[] s, uint[] fkey, int keyoff)
 {
     s[1] ^= CamelliaEngine.leftRotate(s[0] & fkey[keyoff], 1);
     s[0] ^= (fkey[1 + keyoff] | s[1]);
     s[2] ^= (fkey[3 + keyoff] | s[3]);
     s[3] ^= CamelliaEngine.leftRotate(fkey[2 + keyoff] & s[2], 1);
 }
Esempio n. 3
0
        private static void camelliaF2(uint[] s, uint[] skey, int keyoff)
        {
            uint num  = s[0] ^ skey[keyoff];
            uint num2 = CamelliaEngine.SBOX4_4404[(int)((byte)num)];

            num2 ^= CamelliaEngine.SBOX3_3033[(int)((byte)(num >> 8))];
            num2 ^= CamelliaEngine.SBOX2_0222[(int)((byte)(num >> 16))];
            num2 ^= CamelliaEngine.SBOX1_1110[(int)((byte)(num >> 24))];
            uint num3 = s[1] ^ skey[1 + keyoff];
            uint num4 = CamelliaEngine.SBOX1_1110[(int)((byte)num3)];

            num4 ^= CamelliaEngine.SBOX4_4404[(int)((byte)(num3 >> 8))];
            num4 ^= CamelliaEngine.SBOX3_3033[(int)((byte)(num3 >> 16))];
            num4 ^= CamelliaEngine.SBOX2_0222[(int)((byte)(num3 >> 24))];
            s[2] ^= (num2 ^ num4);
            s[3] ^= (num2 ^ num4 ^ CamelliaEngine.rightRotate(num2, 8));
            num   = (s[2] ^ skey[2 + keyoff]);
            num2  = CamelliaEngine.SBOX4_4404[(int)((byte)num)];
            num2 ^= CamelliaEngine.SBOX3_3033[(int)((byte)(num >> 8))];
            num2 ^= CamelliaEngine.SBOX2_0222[(int)((byte)(num >> 16))];
            num2 ^= CamelliaEngine.SBOX1_1110[(int)((byte)(num >> 24))];
            num3  = (s[3] ^ skey[3 + keyoff]);
            num4  = CamelliaEngine.SBOX1_1110[(int)((byte)num3)];
            num4 ^= CamelliaEngine.SBOX4_4404[(int)((byte)(num3 >> 8))];
            num4 ^= CamelliaEngine.SBOX3_3033[(int)((byte)(num3 >> 16))];
            num4 ^= CamelliaEngine.SBOX2_0222[(int)((byte)(num3 >> 24))];
            s[0] ^= (num2 ^ num4);
            s[1] ^= (num2 ^ num4 ^ CamelliaEngine.rightRotate(num2, 8));
        }
        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.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.");
        }
Esempio n. 5
0
        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":
                        padding = new Pkcs7Padding();
                        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 > 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.");
        }
Esempio n. 6
0
        private void setKey(bool forEncryption, byte[] key)
        {
            uint[] array  = new uint[8];
            uint[] array2 = new uint[4];
            uint[] array3 = new uint[4];
            uint[] array4 = new uint[4];
            int    num    = key.Length;

            if (num != 16)
            {
                if (num != 24)
                {
                    if (num != 32)
                    {
                        throw new ArgumentException("key sizes are only 16/24/32 bytes.");
                    }
                    array[0]       = CamelliaEngine.bytes2uint(key, 0);
                    array[1]       = CamelliaEngine.bytes2uint(key, 4);
                    array[2]       = CamelliaEngine.bytes2uint(key, 8);
                    array[3]       = CamelliaEngine.bytes2uint(key, 12);
                    array[4]       = CamelliaEngine.bytes2uint(key, 16);
                    array[5]       = CamelliaEngine.bytes2uint(key, 20);
                    array[6]       = CamelliaEngine.bytes2uint(key, 24);
                    array[7]       = CamelliaEngine.bytes2uint(key, 28);
                    this._keyIs128 = false;
                }
                else
                {
                    array[0]       = CamelliaEngine.bytes2uint(key, 0);
                    array[1]       = CamelliaEngine.bytes2uint(key, 4);
                    array[2]       = CamelliaEngine.bytes2uint(key, 8);
                    array[3]       = CamelliaEngine.bytes2uint(key, 12);
                    array[4]       = CamelliaEngine.bytes2uint(key, 16);
                    array[5]       = CamelliaEngine.bytes2uint(key, 20);
                    array[6]       = ~array[4];
                    array[7]       = ~array[5];
                    this._keyIs128 = false;
                }
            }
            else
            {
                this._keyIs128 = true;
                array[0]       = CamelliaEngine.bytes2uint(key, 0);
                array[1]       = CamelliaEngine.bytes2uint(key, 4);
                array[2]       = CamelliaEngine.bytes2uint(key, 8);
                array[3]       = CamelliaEngine.bytes2uint(key, 12);
                array[4]       = (array[5] = (array[6] = (array[7] = 0u)));
            }
            for (int i = 0; i < 4; i++)
            {
                array2[i] = (array[i] ^ array[i + 4]);
            }
            CamelliaEngine.camelliaF2(array2, CamelliaEngine.SIGMA, 0);
            for (int j = 0; j < 4; j++)
            {
                array2[j] ^= array[j];
            }
            CamelliaEngine.camelliaF2(array2, CamelliaEngine.SIGMA, 4);
            if (this._keyIs128)
            {
                if (forEncryption)
                {
                    this.kw[0] = array[0];
                    this.kw[1] = array[1];
                    this.kw[2] = array[2];
                    this.kw[3] = array[3];
                    CamelliaEngine.roldq(15, array, 0, this.subkey, 4);
                    CamelliaEngine.roldq(30, array, 0, this.subkey, 12);
                    CamelliaEngine.roldq(15, array, 0, array4, 0);
                    this.subkey[18] = array4[2];
                    this.subkey[19] = array4[3];
                    CamelliaEngine.roldq(17, array, 0, this.ke, 4);
                    CamelliaEngine.roldq(17, array, 0, this.subkey, 24);
                    CamelliaEngine.roldq(17, array, 0, this.subkey, 32);
                    this.subkey[0] = array2[0];
                    this.subkey[1] = array2[1];
                    this.subkey[2] = array2[2];
                    this.subkey[3] = array2[3];
                    CamelliaEngine.roldq(15, array2, 0, this.subkey, 8);
                    CamelliaEngine.roldq(15, array2, 0, this.ke, 0);
                    CamelliaEngine.roldq(15, array2, 0, array4, 0);
                    this.subkey[16] = array4[0];
                    this.subkey[17] = array4[1];
                    CamelliaEngine.roldq(15, array2, 0, this.subkey, 20);
                    CamelliaEngine.roldqo32(34, array2, 0, this.subkey, 28);
                    CamelliaEngine.roldq(17, array2, 0, this.kw, 4);
                    return;
                }
                this.kw[4] = array[0];
                this.kw[5] = array[1];
                this.kw[6] = array[2];
                this.kw[7] = array[3];
                CamelliaEngine.decroldq(15, array, 0, this.subkey, 28);
                CamelliaEngine.decroldq(30, array, 0, this.subkey, 20);
                CamelliaEngine.decroldq(15, array, 0, array4, 0);
                this.subkey[16] = array4[0];
                this.subkey[17] = array4[1];
                CamelliaEngine.decroldq(17, array, 0, this.ke, 0);
                CamelliaEngine.decroldq(17, array, 0, this.subkey, 8);
                CamelliaEngine.decroldq(17, array, 0, this.subkey, 0);
                this.subkey[34] = array2[0];
                this.subkey[35] = array2[1];
                this.subkey[32] = array2[2];
                this.subkey[33] = array2[3];
                CamelliaEngine.decroldq(15, array2, 0, this.subkey, 24);
                CamelliaEngine.decroldq(15, array2, 0, this.ke, 4);
                CamelliaEngine.decroldq(15, array2, 0, array4, 0);
                this.subkey[18] = array4[2];
                this.subkey[19] = array4[3];
                CamelliaEngine.decroldq(15, array2, 0, this.subkey, 12);
                CamelliaEngine.decroldqo32(34, array2, 0, this.subkey, 4);
                CamelliaEngine.roldq(17, array2, 0, this.kw, 0);
                return;
            }
            else
            {
                for (int k = 0; k < 4; k++)
                {
                    array3[k] = (array2[k] ^ array[k + 4]);
                }
                CamelliaEngine.camelliaF2(array3, CamelliaEngine.SIGMA, 8);
                if (forEncryption)
                {
                    this.kw[0] = array[0];
                    this.kw[1] = array[1];
                    this.kw[2] = array[2];
                    this.kw[3] = array[3];
                    CamelliaEngine.roldqo32(45, array, 0, this.subkey, 16);
                    CamelliaEngine.roldq(15, array, 0, this.ke, 4);
                    CamelliaEngine.roldq(17, array, 0, this.subkey, 32);
                    CamelliaEngine.roldqo32(34, array, 0, this.subkey, 44);
                    CamelliaEngine.roldq(15, array, 4, this.subkey, 4);
                    CamelliaEngine.roldq(15, array, 4, this.ke, 0);
                    CamelliaEngine.roldq(30, array, 4, this.subkey, 24);
                    CamelliaEngine.roldqo32(34, array, 4, this.subkey, 36);
                    CamelliaEngine.roldq(15, array2, 0, this.subkey, 8);
                    CamelliaEngine.roldq(30, array2, 0, this.subkey, 20);
                    this.ke[8]  = array2[1];
                    this.ke[9]  = array2[2];
                    this.ke[10] = array2[3];
                    this.ke[11] = array2[0];
                    CamelliaEngine.roldqo32(49, array2, 0, this.subkey, 40);
                    this.subkey[0] = array3[0];
                    this.subkey[1] = array3[1];
                    this.subkey[2] = array3[2];
                    this.subkey[3] = array3[3];
                    CamelliaEngine.roldq(30, array3, 0, this.subkey, 12);
                    CamelliaEngine.roldq(30, array3, 0, this.subkey, 28);
                    CamelliaEngine.roldqo32(51, array3, 0, this.kw, 4);
                    return;
                }
                this.kw[4] = array[0];
                this.kw[5] = array[1];
                this.kw[6] = array[2];
                this.kw[7] = array[3];
                CamelliaEngine.decroldqo32(45, array, 0, this.subkey, 28);
                CamelliaEngine.decroldq(15, array, 0, this.ke, 4);
                CamelliaEngine.decroldq(17, array, 0, this.subkey, 12);
                CamelliaEngine.decroldqo32(34, array, 0, this.subkey, 0);
                CamelliaEngine.decroldq(15, array, 4, this.subkey, 40);
                CamelliaEngine.decroldq(15, array, 4, this.ke, 8);
                CamelliaEngine.decroldq(30, array, 4, this.subkey, 20);
                CamelliaEngine.decroldqo32(34, array, 4, this.subkey, 8);
                CamelliaEngine.decroldq(15, array2, 0, this.subkey, 36);
                CamelliaEngine.decroldq(30, array2, 0, this.subkey, 24);
                this.ke[2] = array2[1];
                this.ke[3] = array2[2];
                this.ke[0] = array2[3];
                this.ke[1] = array2[0];
                CamelliaEngine.decroldqo32(49, array2, 0, this.subkey, 4);
                this.subkey[46] = array3[0];
                this.subkey[47] = array3[1];
                this.subkey[44] = array3[2];
                this.subkey[45] = array3[3];
                CamelliaEngine.decroldq(30, array3, 0, this.subkey, 32);
                CamelliaEngine.decroldq(30, array3, 0, this.subkey, 16);
                CamelliaEngine.roldqo32(51, array3, 0, this.kw, 0);
                return;
            }
        }
Esempio n. 7
0
File: AWiz.cs Progetto: burstas/rmps
        private BufferedBlockCipher CreateScryptoEngine()
        {
            IBlockCipher engine;
            switch (_MSec.Algorithm)
            {
                case ESec.SCRYPTO_AES:
                    engine = new AesEngine();
                    _MSec.KeySize = 32;
                    _MSec.IVSize = 0;
                    break;
                case ESec.SCRYPTO_AESFAST:
                    engine = new AesFastEngine();
                    _MSec.KeySize = 32;
                    _MSec.IVSize = 0;
                    break;
                case ESec.SCRYPTO_AESLIGHT:
                    engine = new AesLightEngine();
                    _MSec.KeySize = 32;
                    _MSec.IVSize = 0;
                    break;
                case ESec.SCRYPTO_BLOWFISH:
                    engine = new BlowfishEngine();
                    _MSec.KeySize = 56;
                    _MSec.IVSize = 0;
                    break;
                case ESec.SCRYPTO_CAMELLIA:
                    engine = new CamelliaEngine();
                    _MSec.KeySize = 32;
                    _MSec.IVSize = 0;
                    break;
                case ESec.SCRYPTO_CAMELLIALIGHT:
                    engine = new CamelliaLightEngine();
                    _MSec.KeySize = 32;
                    _MSec.IVSize = 0;
                    break;
                case ESec.SCRYPTO_CAST5:
                    engine = new Cast5Engine();
                    _MSec.KeySize = 16;
                    _MSec.IVSize = 0;
                    break;
                case ESec.SCRYPTO_CAST6:
                    engine = new Cast6Engine();
                    _MSec.KeySize = 32;
                    _MSec.IVSize = 0;
                    break;
                case ESec.SCRYPTO_DES:
                    engine = new DesEngine();
                    _MSec.KeySize = 8;
                    _MSec.IVSize = 0;
                    break;
                case ESec.SCRYPTO_DESEDE:
                    engine = new DesEdeEngine();
                    _MSec.KeySize = 24;
                    _MSec.IVSize = 0;
                    break;
                case ESec.SCRYPTO_GOST28147:
                    engine = new Gost28147Engine();
                    _MSec.KeySize = 32;
                    _MSec.IVSize = 0;
                    break;
                case ESec.SCRYPTO_NOEKEON:
                    engine = new NoekeonEngine();
                    _MSec.KeySize = 16;
                    _MSec.IVSize = 0;
                    break;
                case ESec.SCRYPTO_NULL:
                    engine = new NullEngine();
                    _MSec.KeySize = 32;
                    _MSec.IVSize = 16;
                    break;
                case ESec.SCRYPTO_RC2:
                    engine = new RC2Engine();
                    _MSec.KeySize = 128;
                    _MSec.IVSize = 0;
                    break;
                case ESec.SCRYPTO_RC532:
                    engine = new RC532Engine();
                    _MSec.KeySize = 16;
                    _MSec.IVSize = 0;
                    break;
                case ESec.SCRYPTO_RC564:
                    engine = new RC564Engine();
                    _MSec.KeySize = 16;
                    _MSec.IVSize = 0;
                    break;
                case ESec.SCRYPTO_RC6:
                    engine = new RC6Engine();
                    _MSec.KeySize = 32;
                    _MSec.IVSize = 0;
                    break;
                case ESec.SCRYPTO_RIJNDAEL:
                    engine = new RijndaelEngine();
                    _MSec.KeySize = 32;
                    _MSec.IVSize = 0;
                    break;
                case ESec.SCRYPTO_SEED:
                    engine = new SeedEngine();
                    _MSec.KeySize = 16;
                    _MSec.IVSize = 0;
                    break;
                case ESec.SCRYPTO_SERPENT:
                    engine = new SerpentEngine();
                    _MSec.KeySize = 32;
                    _MSec.IVSize = 0;
                    break;
                case ESec.SCRYPTO_SKIPJACK:
                    engine = new SkipjackEngine();
                    _MSec.KeySize = 16;
                    _MSec.IVSize = 0;
                    break;
                case ESec.SCRYPTO_TEA:
                    engine = new TeaEngine();
                    _MSec.KeySize = 16;
                    _MSec.IVSize = 0;
                    break;
                case ESec.SCRYPTO_TWOFISH:
                    engine = new TwofishEngine();
                    _MSec.KeySize = 32;
                    _MSec.IVSize = 0;
                    break;
                case ESec.SCRYPTO_XTEA:
                    engine = new XteaEngine();
                    _MSec.KeySize = 16;
                    _MSec.IVSize = 0;
                    break;
                default:
                    engine = new AesEngine();
                    _MSec.KeySize = 32;
                    _MSec.IVSize = 0;
                    break;
            }

            switch (_MSec.Mode)
            {
                case ESec.MODE_CBC:
                    engine = new CbcBlockCipher(engine);
                    break;
                case ESec.MODE_CFB:
                    engine = new CfbBlockCipher(engine, 8);
                    break;
                case ESec.MODE_GOFB:
                    engine = new GOfbBlockCipher(engine);
                    break;
                case ESec.MODE_OFB:
                    engine = new OfbBlockCipher(engine, 8);
                    break;
                case ESec.MODE_OPENPGPCFB:
                    engine = new OpenPgpCfbBlockCipher(engine);
                    break;
                case ESec.MODE_SIC:
                    engine = new SicBlockCipher(engine);
                    break;
                default:
                    engine = new CbcBlockCipher(engine);
                    break;
            }

            IBlockCipherPadding padding = null;
            switch (_MSec.Padding)
            {
                case ESec.PADDING_ISO10126d2:
                    padding = new ISO10126d2Padding();
                    break;
                case ESec.PADDING_ISO7816d4:
                    padding = new ISO7816d4Padding();
                    break;
                case ESec.PADDING_PKCS7:
                    padding = new Pkcs7Padding();
                    break;
                case ESec.PADDING_TBC:
                    padding = new TbcPadding();
                    break;
                case ESec.PADDING_X923:
                    padding = new X923Padding();
                    break;
                case ESec.PADDING_ZEROBYTE:
                    padding = new ZeroBytePadding();
                    break;
                default:
                    padding = new Pkcs7Padding();
                    break;
            }

            return new PaddedBufferedBlockCipher(engine, padding);
        }