Inheritance: AsymmetricKeyExchangeFormatter
コード例 #1
0
		public void Properties () 
		{
			RSAOAEPKeyExchangeFormatter keyex = new RSAOAEPKeyExchangeFormatter ();
			keyex.SetKey (key);
			Assert.IsNull (keyex.Parameter, "RSAOAEPKeyExchangeFormatter.Parameter");
			Assert.IsNull (keyex.Parameters, "RSAOAEPKeyExchangeFormatter.Parameters");
			Assert.IsNull (keyex.Rng, "RSAOAEPKeyExchangeFormatter.Rng");
			Assert.AreEqual ("System.Security.Cryptography.RSAOAEPKeyExchangeFormatter", keyex.ToString ());
		}
		public void Properties () 
		{
			RSAOAEPKeyExchangeFormatter keyex = new RSAOAEPKeyExchangeFormatter ();
			keyex.SetKey (key);
			Assertion.AssertNull ("RSAOAEPKeyExchangeFormatter.Parameter", keyex.Parameter);
			Assertion.AssertNull ("RSAOAEPKeyExchangeFormatter.Parameters", keyex.Parameters);
			Assertion.AssertNull ("RSAOAEPKeyExchangeFormatter.Rng", keyex.Rng);
			Assertion.AssertEquals ("RSAOAEPKeyExchangeFormatter.ToString()", "System.Security.Cryptography.RSAOAEPKeyExchangeFormatter", keyex.ToString ());
		}
コード例 #3
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        /// <summary>Encrypts data with the <see cref="T:System.Security.Cryptography.RSA" /> algorithm.</summary>
        /// <returns>The encrypted data.</returns>
        /// <param name="rgb">The data to be encrypted. </param>
        /// <param name="fOAEP">true to perform direct <see cref="T:System.Security.Cryptography.RSA" /> encryption using Optimal Asymmetric Encryption Padding (OAEP), which is only available on a computer running Microsoft Windows XP or later; false to use PKCS#1 v1.5 padding. </param>
        /// <exception cref="T:System.Security.Cryptography.CryptographicException">The cryptographic service provider (CSP) cannot be acquired.-or- The length of the <paramref name="rgb" /> parameter is greater than the maximum allowed length.-or- The <paramref name="fOAEP" /> parameter is true and OAEP padding is not supported. </exception>
        /// <exception cref="T:System.ArgumentNullException">
        ///   <paramref name="rgb " />is null.</exception>
        /// <PermissionSet>
        ///   <IPermission class="System.Security.Permissions.KeyContainerPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true" />
        /// </PermissionSet>
        public byte[] Encrypt(byte[] rgb, bool fOAEP)
        {
            AsymmetricKeyExchangeFormatter asymmetricKeyExchangeFormatter;

            if (fOAEP)
            {
                asymmetricKeyExchangeFormatter = new RSAOAEPKeyExchangeFormatter(this.rsa);
            }
            else
            {
                asymmetricKeyExchangeFormatter = new RSAPKCS1KeyExchangeFormatter(this.rsa);
            }
            return(asymmetricKeyExchangeFormatter.CreateKeyExchange(rgb));
        }
コード例 #4
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		public void ExchangeMin() 
		{
			AsymmetricKeyExchangeFormatter keyex = new RSAOAEPKeyExchangeFormatter (key);
			byte[] M = { 0x01 };
			try {
				byte[] EM = keyex.CreateKeyExchange (M);
				AsymmetricKeyExchangeDeformatter keyback = new RSAOAEPKeyExchangeDeformatter (key);
				byte[] Mback = keyback.DecryptKeyExchange (EM);
				AssertEquals ("RSAOAEPKeyExchangeFormatter Min", M, Mback);
			}
			catch (CryptographicException ce) {
				// not supported by every version of Windows - Minimum: Windows XP
				Console.WriteLine (ce.Message + " (" + Environment.OSVersion.ToString () + ")");
			}
		}
        public byte[] Encrypt(byte[] rgb, bool fOAEP)
        {
            // choose between OAEP or PKCS#1 v.1.5 padding
            AsymmetricKeyExchangeFormatter fmt = null;

            if (fOAEP)
            {
                fmt = new RSAOAEPKeyExchangeFormatter(rsa);
            }
            else
            {
                fmt = new RSAPKCS1KeyExchangeFormatter(rsa);
            }

            return(fmt.CreateKeyExchange(rgb));
        }
コード例 #6
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ファイル: ByteArrayExtensions.cs プロジェクト: sukchr/brevity
        /// <summary>
        /// Encrypt binary.
        /// </summary>
        /// <param name="binary">The data to encrypt.</param>
        /// <param name="publicKey">The public key.</param>
        /// <param name="symmetricAlgorithmName">Optional. The name of the symmetric algorithm to use. Defaults to "Rijndael" (128 bits AES). See http://msdn.microsoft.com/en-us/library/k74a682y(v=vs.100).aspx for a list of valid values.</param>
        /// <returns></returns>
        public static byte[] Encrypt(this byte[] binary, RSA publicKey, string symmetricAlgorithmName = "Rijndael")
        {
            if (binary == null) throw new ArgumentNullException("binary");
            if (publicKey == null) throw new ArgumentNullException("publicKey");

            //create sym key of given type
            var symmetricKey = SymmetricAlgorithm.Create(symmetricAlgorithmName);

            if (symmetricKey == null)
                throw new ArgumentException("Unsupported symmetricAlgorithmName: '{0}'".FormatWith(symmetricAlgorithmName), "symmetricAlgorithmName");

            //encrypt input using the sym key
            var encryptedBinary = symmetricKey.CreateEncryptor().TransformFinalBlock(binary, 0, binary.Length);

            //encrypt sym key using asym key
            var encryptedSymmetricKey = new RSAOAEPKeyExchangeFormatter(publicKey).CreateKeyExchange(symmetricKey.Key);

            //concat encrypted sym key, IV (public) and encrypted binary
            return Concatenate(encryptedSymmetricKey, symmetricKey.IV, encryptedBinary);
        }
コード例 #7
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		public void Exchange128() 
		{
			AsymmetricKeyExchangeFormatter keyex = new RSAOAEPKeyExchangeFormatter (key);
			byte[] M = { 0xd4, 0x36, 0xe9, 0x95, 0x69, 0xfd, 0x32, 0xa7, 0xc8, 0xa0, 0x5b, 0xbc, 0x90, 0xd3, 0x2c, 0x49 };
			try {
				byte[] EM = keyex.CreateKeyExchange (M, typeof (Rijndael));
				AsymmetricKeyExchangeDeformatter keyback = new RSAOAEPKeyExchangeDeformatter (key);
				byte[] Mback = keyback.DecryptKeyExchange (EM);
				AssertEquals ("RSAOAEPKeyExchangeFormatter 128", M, Mback);
			}
			catch (CryptographicException ce) {
				// not supported by every version of Windows - Minimum: Windows XP
				Console.WriteLine (ce.Message + " (" + Environment.OSVersion.ToString () + ")");
			}
		}
コード例 #8
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 /// <inheritdoc />
 protected internal override byte[] Encrypt(byte[] data, byte[] iv)
 {
     var keyExchange = new RSAOAEPKeyExchangeFormatter(this.Rsa);
     return keyExchange.CreateKeyExchange(data);
 }
コード例 #9
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        /// <inheritdoc />
        protected internal override byte[] Encrypt(byte[] data, byte[] iv)
        {
            AsymmetricKeyExchangeFormatter keyExchange;
            switch (this.Algorithm)
            {
                case AsymmetricAlgorithm.RsaOaepSha1:
                case AsymmetricAlgorithm.RsaOaepSha256:
                case AsymmetricAlgorithm.RsaOaepSha384:
                case AsymmetricAlgorithm.RsaOaepSha512:
                    keyExchange = new RSAOAEPKeyExchangeFormatter(this.Rsa);
                    break;
                case AsymmetricAlgorithm.RsaPkcs1:
                    keyExchange = new RSAPKCS1KeyExchangeFormatter(this.Rsa);
                    break;
                default:
                    throw new NotSupportedException();
            }

            return keyExchange.CreateKeyExchange(data);
        }
コード例 #10
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		public byte[] Encrypt (byte[] rgb, bool fOAEP) 
		{
			// choose between OAEP or PKCS#1 v.1.5 padding
			AsymmetricKeyExchangeFormatter fmt = null;
			if (fOAEP)
				fmt = new RSAOAEPKeyExchangeFormatter (rsa);
			else
				fmt = new RSAPKCS1KeyExchangeFormatter (rsa);

			return fmt.CreateKeyExchange (rgb);
		}
コード例 #11
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        /// <summary>
        /// Encrypts the symmetric key data.
        /// </summary>
        /// <param name="cert">The cert.</param>
        /// <param name="keyData">The key data.</param>
        /// <returns>The encrypted data.</returns>
        public static byte[] EncryptSymmetricKeyData(X509Certificate2 cert, byte[] keyData)
        {
            if (cert == null)
            {
                throw new ArgumentNullException("cert");
            }

            if (keyData == null)
            {
                throw new ArgumentNullException("keyData");
            }

            RSACryptoServiceProvider rsaPublicKey = cert.PublicKey.Key as RSACryptoServiceProvider;

            RSAOAEPKeyExchangeFormatter keyFormatter = new RSAOAEPKeyExchangeFormatter(rsaPublicKey);

            return keyFormatter.CreateKeyExchange(keyData);
        }
コード例 #12
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ファイル: encryptedxml.cs プロジェクト: mind0n/hive
        // encrypts the supplied input key data using an RSA key and specifies whether we want to use OAEP 
        // padding or PKCS#1 v1.5 padding as described in the PKCS specification
        public static byte[] EncryptKey (byte[] keyData, RSA rsa, bool useOAEP) {
            if (keyData == null)
                throw new ArgumentNullException("keyData");
            if (rsa == null)
                throw new ArgumentNullException("rsa");

            if (useOAEP) {
                RSAOAEPKeyExchangeFormatter rsaFormatter = new RSAOAEPKeyExchangeFormatter(rsa);
                return rsaFormatter.CreateKeyExchange(keyData);
            } else {
                RSAPKCS1KeyExchangeFormatter rsaFormatter = new RSAPKCS1KeyExchangeFormatter(rsa);
                return rsaFormatter.CreateKeyExchange(keyData);
            }
        }
コード例 #13
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ファイル: ManagedProtection.cs プロジェクト: Profit0004/mono
// FIXME	[KeyContainerPermission (SecurityAction.Assert, KeyContainerName = "DAPI",
//			Flags = KeyContainerPermissionFlags.Open | KeyContainerPermissionFlags.Create)]
		public static byte[] Protect (byte[] userData, byte[] optionalEntropy, DataProtectionScope scope) 
		{
			if (userData == null)
				throw new ArgumentNullException ("userData");

			Rijndael aes = Rijndael.Create ();
			aes.KeySize = 128;

			byte[] encdata = null;
			using (MemoryStream ms = new MemoryStream ()) {
				ICryptoTransform t = aes.CreateEncryptor ();
				using (CryptoStream cs = new CryptoStream (ms, t, CryptoStreamMode.Write)) {
					cs.Write (userData, 0, userData.Length);
					cs.Close ();
					encdata = ms.ToArray ();
				}
			}

			byte[] key = null;
			byte[] iv = null;
			byte[] secret = null;
			byte[] header = null;
			SHA256 hash = SHA256.Create ();

			try {
				key = aes.Key;
				iv = aes.IV;
				secret = new byte[1 + 1 + 16 + 1 + 16 + 1 + 32];

				byte[] digest = hash.ComputeHash (userData);
				if ((optionalEntropy != null) && (optionalEntropy.Length > 0)) {
					// the same optionalEntropy will be required to get the data back
					byte[] mask = hash.ComputeHash (optionalEntropy);
					for (int i = 0; i < 16; i++) {
						key[i] ^= mask[i];
						iv[i] ^= mask[i + 16];
					}
					secret[0] = 2; // entropy
				} else {
					secret[0] = 1; // without entropy
				}

				secret[1] = 16; // key size
				Buffer.BlockCopy (key, 0, secret, 2, 16);
				secret[18] = 16; // iv size
				Buffer.BlockCopy (iv, 0, secret, 19, 16);
				secret[35] = 32; // digest size
				Buffer.BlockCopy (digest, 0, secret, 36, 32);

				RSAOAEPKeyExchangeFormatter formatter = new RSAOAEPKeyExchangeFormatter (GetKey (scope));
				header = formatter.CreateKeyExchange (secret);
			}
			finally {
				if (key != null) {
					Array.Clear (key, 0, key.Length);
					key = null;
				}
				if (secret != null) {
					Array.Clear (secret, 0, secret.Length);
					secret = null;
				}
				if (iv != null) {
					Array.Clear (iv, 0, iv.Length);
					iv = null;
				}
				aes.Clear ();
				hash.Clear ();
			}

			byte[] result = new byte[header.Length + encdata.Length];
			Buffer.BlockCopy (header, 0, result, 0, header.Length);
			Buffer.BlockCopy (encdata, 0, result, header.Length, encdata.Length);
			return result;
		}
コード例 #14
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	public void ExchangeDSAKey () 
	{
		DSA dsa = DSA.Create ();
		AsymmetricKeyExchangeFormatter keyex = new RSAOAEPKeyExchangeFormatter (dsa);
	}
コード例 #15
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		public static byte[] EncryptKey (byte[] keyData, RSA rsa, bool fOAEP)
		{
			AsymmetricKeyExchangeFormatter formatter = null;
			if (fOAEP) 
				formatter = new RSAOAEPKeyExchangeFormatter (rsa);
			else
				formatter = new RSAPKCS1KeyExchangeFormatter (rsa);
			return formatter.CreateKeyExchange (keyData);
		}
コード例 #16
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		public void ExchangeTooBig() 
		{
			AsymmetricKeyExchangeFormatter keyex = new RSAOAEPKeyExchangeFormatter (key);
			byte[] M = new byte [(key.KeySize >> 3)- 10];
			byte[] EM = keyex.CreateKeyExchange (M);
		}
コード例 #17
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		public void Parameter () 
		{
			RSAOAEPKeyExchangeFormatter keyex = new RSAOAEPKeyExchangeFormatter (key);
			keyex.Parameter = new byte [1];
			Assert.AreEqual (1, keyex.Parameter.Length);
		}
コード例 #18
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		public void ExchangeNoKey () 
		{
			AsymmetricKeyExchangeFormatter keyex = new RSAOAEPKeyExchangeFormatter ();
			byte[] M = keyex.CreateKeyExchange (new byte [16]);
		}
コード例 #19
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		public void Rng () 
		{
			RSAOAEPKeyExchangeFormatter keyex = new RSAOAEPKeyExchangeFormatter (key);
			Assert.IsNull (keyex.Rng, "Rng");
			keyex.Rng = RandomNumberGenerator.Create ();
			Assert.IsNotNull (keyex.Rng, "Rng 2");
		}