System.Security.Cryptography.DESTransform.DESTransform C# (CSharp) Метод

		internal DESTransform (SymmetricAlgorithm symmAlgo, bool encryption, byte[] key, byte[] iv) 
			: base (symmAlgo, encryption, iv)
		{
			byte[] clonedKey = null;
#if NET_2_0
			if (key == null) {
				key = GetStrongKey ();
				clonedKey = key; // no need to clone
			}
#endif
			// note: checking (semi-)weak keys also checks valid key length
			if (DES.IsWeakKey (key) || DES.IsSemiWeakKey (key)) {
				string msg = Locale.GetText ("This is a known weak, or semi-weak, key.");
				throw new CryptographicException (msg);
			}

			if (clonedKey == null)
				clonedKey = (byte[]) key.Clone ();

			keySchedule = new byte [KEY_BYTE_SIZE * 16];
			byteBuff = new byte [BLOCK_BYTE_SIZE];
			dwordBuff = new uint [BLOCK_BYTE_SIZE / 4];
			SetKey (clonedKey);
		}