public static byte[] CalculateDHBasicAgreement(DHPublicKeyParameters publicKey, DHPrivateKeyParameters privateKey) { DHBasicAgreement agreement = new DHBasicAgreement(); agreement.Init(privateKey); return(BigIntegers.AsUnsignedByteArray(agreement.CalculateAgreement(publicKey))); }
/** * this test is can take quiet a while */ private void doTestGeneration( int size) { DHParametersGenerator pGen = new DHParametersGenerator(); pGen.Init(size, 10, new SecureRandom()); DHParameters dhParams = pGen.GenerateParameters(); if (dhParams.L != 0) { Fail("DHParametersGenerator failed to set J to 0 in generated DHParameters"); } DHKeyGenerationParameters dhkgParams = new DHKeyGenerationParameters(new SecureRandom(), dhParams); DHBasicKeyPairGenerator kpGen = new DHBasicKeyPairGenerator(); kpGen.Init(dhkgParams); // // generate first pair // AsymmetricCipherKeyPair pair = kpGen.GenerateKeyPair(); DHPublicKeyParameters pu1 = (DHPublicKeyParameters)pair.Public; DHPrivateKeyParameters pv1 = (DHPrivateKeyParameters)pair.Private; // // generate second pair // dhkgParams = new DHKeyGenerationParameters(new SecureRandom(), pu1.Parameters); kpGen.Init(dhkgParams); pair = kpGen.GenerateKeyPair(); DHPublicKeyParameters pu2 = (DHPublicKeyParameters)pair.Public; DHPrivateKeyParameters pv2 = (DHPrivateKeyParameters)pair.Private; // // two way // DHBasicAgreement e1 = new DHBasicAgreement(); DHBasicAgreement e2 = new DHBasicAgreement(); e1.Init(new ParametersWithRandom(pv1, new SecureRandom())); e2.Init(new ParametersWithRandom(pv2, new SecureRandom())); BigInteger k1 = e1.CalculateAgreement(pu2); BigInteger k2 = e2.CalculateAgreement(pu1); if (!k1.Equals(k2)) { Fail("basic with " + size + " bit 2-way test failed"); } }
protected virtual byte[] CalculateDHBasicAgreement(DHPublicKeyParameters publicKey, DHPrivateKeyParameters privateKey) { DHBasicAgreement dhAgree = new DHBasicAgreement(); dhAgree.Init(dhAgreeClientPrivateKey); BigInteger agreement = dhAgree.CalculateAgreement(dhAgreeServerPublicKey); return(BigIntegers.AsUnsignedByteArray(agreement)); }
public byte[] GeneratePremasterSecret() { /* * Diffie-Hellman basic key agreement */ DHBasicAgreement dhAgree = new DHBasicAgreement(); dhAgree.Init(dhAgreeClientKeyPair.Private); BigInteger agreement = dhAgree.CalculateAgreement(dhAgreeServerPublicKey); return(BigIntegers.AsUnsignedByteArray(agreement)); }
public static byte[] CalculateDHBasicAgreement(DHPublicKeyParameters publicKey, DHPrivateKeyParameters privateKey) { DHBasicAgreement basicAgreement = new DHBasicAgreement(); basicAgreement.Init(privateKey); BigInteger agreementValue = basicAgreement.CalculateAgreement(publicKey); /* * RFC 5246 8.1.2. Leading bytes of Z that contain all zero bits are stripped before it is * used as the pre_master_secret. */ return(BigIntegers.AsUnsignedByteArray(agreementValue)); }
private void doTestDHBasic( int size, int privateValueSize, BigInteger g, BigInteger p) { DHBasicKeyPairGenerator kpGen = getDHBasicKeyPairGenerator(g, p, privateValueSize); // // generate first pair // AsymmetricCipherKeyPair pair = kpGen.GenerateKeyPair(); DHPublicKeyParameters pu1 = (DHPublicKeyParameters)pair.Public; DHPrivateKeyParameters pv1 = (DHPrivateKeyParameters)pair.Private; checkKeySize(privateValueSize, pv1); // // generate second pair // pair = kpGen.GenerateKeyPair(); DHPublicKeyParameters pu2 = (DHPublicKeyParameters)pair.Public; DHPrivateKeyParameters pv2 = (DHPrivateKeyParameters)pair.Private; checkKeySize(privateValueSize, pv2); // // two way // DHBasicAgreement e1 = new DHBasicAgreement(); DHBasicAgreement e2 = new DHBasicAgreement(); e1.Init(pv1); e2.Init(pv2); BigInteger k1 = e1.CalculateAgreement(pu2); BigInteger k2 = e2.CalculateAgreement(pu1); if (!k1.Equals(k2)) { Fail("basic " + size + " bit 2-way test failed"); } }
public byte[] CalculateSharedSecret(byte[] remotePublicKey) { if (!m_bInited) { Init(); } DHPublicKeyParameters remoteKeyParameters = new DHPublicKeyParameters(new BigInteger(1, remotePublicKey), m_dhParameters); DHBasicAgreement agreement = new DHBasicAgreement(); agreement.Init(m_keyPair.Private); byte[] resAgreement = agreement.CalculateAgreement(remoteKeyParameters).ToByteArrayUnsigned(); Sha256Digest digest = new Sha256Digest(); byte[] resHash = new byte[digest.GetDigestSize()]; digest.BlockUpdate(resAgreement, 0, resAgreement.Length); digest.DoFinal(resHash, 0); SharedSecret = resHash; return(resHash); }
private void doTestSimpleWithRandom( DHBasicKeyPairGenerator kpGen) { // // generate first pair // AsymmetricCipherKeyPair pair = kpGen.GenerateKeyPair(); DHPublicKeyParameters pu1 = (DHPublicKeyParameters)pair.Public; DHPrivateKeyParameters pv1 = (DHPrivateKeyParameters)pair.Private; // // generate second pair // pair = kpGen.GenerateKeyPair(); DHPublicKeyParameters pu2 = (DHPublicKeyParameters)pair.Public; DHPrivateKeyParameters pv2 = (DHPrivateKeyParameters)pair.Private; // // two way // DHBasicAgreement e1 = new DHBasicAgreement(); DHBasicAgreement e2 = new DHBasicAgreement(); e1.Init(new ParametersWithRandom(pv1, new SecureRandom())); e2.Init(new ParametersWithRandom(pv2, new SecureRandom())); BigInteger k1 = e1.CalculateAgreement(pu2); BigInteger k2 = e2.CalculateAgreement(pu1); if (!k1.Equals(k2)) { Fail("basic with random 2-way test failed"); } }
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 void processDHEKeyExchange( MemoryStream inStr, ISigner signer) { Stream sigIn = inStr; if (signer != null) { signer.Init(false, this.serverPublicKey); signer.BlockUpdate(this.clientRandom, 0, this.clientRandom.Length); signer.BlockUpdate(this.serverRandom, 0, this.serverRandom.Length); sigIn = new SignerStream(inStr, signer, null); } /* * Parse the Structure */ int pLength = TlsUtilities.ReadUint16(sigIn); byte[] pByte = new byte[pLength]; TlsUtilities.ReadFully(pByte, sigIn); int gLength = TlsUtilities.ReadUint16(sigIn); byte[] gByte = new byte[gLength]; TlsUtilities.ReadFully(gByte, sigIn); int YsLength = TlsUtilities.ReadUint16(sigIn); byte[] YsByte = new byte[YsLength]; TlsUtilities.ReadFully(YsByte, sigIn); if (signer != null) { int sigLength = TlsUtilities.ReadUint16(inStr); byte[] sigByte = new byte[sigLength]; TlsUtilities.ReadFully(sigByte, inStr); /* * Verify the Signature. */ if (!signer.VerifySignature(sigByte)) { this.FailWithError(AL_fatal, AP_bad_certificate); } } this.AssertEmpty(inStr); /* * Do the DH calculation. */ BigInteger p = new BigInteger(1, pByte); BigInteger g = new BigInteger(1, gByte); BigInteger Ys = new BigInteger(1, YsByte); /* * Check the DH parameter values */ if (!p.IsProbablePrime(10)) { this.FailWithError(AL_fatal, AP_illegal_parameter); } if (g.CompareTo(BigInteger.Two) < 0 || g.CompareTo(p.Subtract(BigInteger.Two)) > 0) { this.FailWithError(AL_fatal, AP_illegal_parameter); } // TODO For static DH public values, see additional checks in RFC 2631 2.1.5 if (Ys.CompareTo(BigInteger.Two) < 0 || Ys.CompareTo(p.Subtract(BigInteger.One)) > 0) { this.FailWithError(AL_fatal, AP_illegal_parameter); } /* * Diffie-Hellman basic key agreement */ DHParameters dhParams = new DHParameters(p, g); // Generate a keypair DHBasicKeyPairGenerator dhGen = new DHBasicKeyPairGenerator(); dhGen.Init(new DHKeyGenerationParameters(random, dhParams)); AsymmetricCipherKeyPair dhPair = dhGen.GenerateKeyPair(); // Store the public value to send to server this.Yc = ((DHPublicKeyParameters)dhPair.Public).Y; // Calculate the shared secret DHBasicAgreement dhAgree = new DHBasicAgreement(); dhAgree.Init(dhPair.Private); BigInteger agreement = dhAgree.CalculateAgreement(new DHPublicKeyParameters(Ys, dhParams)); this.pms = BigIntegers.AsUnsignedByteArray(agreement); }
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."); }
public override void PerformTest() { doTestDHBasic(512, 0, g512, p512); doTestDHBasic(768, 0, g768, p768); doTestDHBasic(1024, 0, g1024, p1024); doTestDHBasic(512, 64, g512, p512); doTestDHBasic(768, 128, g768, p768); doTestDHBasic(1024, 256, g1024, p1024); doTestDH(512, g512, p512); doTestDH(768, g768, p768); doTestDH(1024, g1024, p1024); // // generation test. // doTestGeneration(256); // // with random test // DHBasicKeyPairGenerator kpBasicGen = getDHBasicKeyPairGenerator(g512, p512, 0); doTestSimpleWithRandom(kpBasicGen); DHKeyPairGenerator kpGen = getDHKeyPairGenerator(g512, p512); doTestGPWithRandom(kpGen); // // parameter tests // DHAgreement dh = new DHAgreement(); AsymmetricCipherKeyPair dhPair = kpGen.GenerateKeyPair(); try { dh.Init(dhPair.Public); Fail("DHAgreement key check failed"); } catch (ArgumentException) { // ignore } DHKeyPairGenerator kpGen768 = getDHKeyPairGenerator(g768, p768); try { dh.Init(dhPair.Private); dh.CalculateAgreement((DHPublicKeyParameters)kpGen768.GenerateKeyPair().Public, BigInteger.ValueOf(100)); Fail("DHAgreement agreement check failed"); } catch (ArgumentException) { // ignore } DHBasicAgreement dhBasic = new DHBasicAgreement(); AsymmetricCipherKeyPair dhBasicPair = kpBasicGen.GenerateKeyPair(); try { dhBasic.Init(dhBasicPair.Public); Fail("DHBasicAgreement key check failed"); } catch (ArgumentException) { // expected } DHBasicKeyPairGenerator kpBasicGen768 = getDHBasicKeyPairGenerator(g768, p768, 0); try { dhBasic.Init(dhPair.Private); dhBasic.CalculateAgreement((DHPublicKeyParameters)kpBasicGen768.GenerateKeyPair().Public); Fail("DHBasicAgreement agreement check failed"); } catch (ArgumentException) { // expected } }
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."); }