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Generate secure random number of seed bytes which is computed with available the seed generation algorithm Generate secret key using the selected algorithm (DES, 3DES, AES etc) By transmitting pilot signals, these two users can estimate the station between them and make use of the route info to produce a essential which is certainly secret only to them. On this github page there is utility class written in Java which performs encryption/decryption using symmetric algorithm, below could be one of encryption flows using symmetric algorithm : Currently, key measures of 128 parts (for symmetric essential algorithms) and 2048 bits (for public-key algorithms) are usually common. SymmetricAlgorithm sma = SymmetricAlgorithm.Create() Rahma b a Collage of Computer Science and Information Technology, University of Basrah, Basra h, Iraq. Does it means that it is created in automatic way during symmetric algorithm creation? Is it generated each time different? I suppose, user should pass key for this purpose. A Modification on Key Stream Generator for RC4 Algorithm Suhad M. I'm just wondering regarding key creation. Using (StreamReader srDecrypt = new StreamReader(csDecrypt))
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New CryptoStream(msDecrypt, decryptor, CryptoStreamMode.Read)) Using (MemoryStream msDecrypt = new MemoryStream(cipherText)) ICryptoTransform decryptor = aesAlg.CreateDecryptor(aesAlg.Key, aesAlg.IV) Static string Decrypt(SymmetricAlgorithm aesAlg, byte cipherText) Using (StreamWriter swEncrypt = new StreamWriter(csEncrypt)) New CryptoStream(msEncrypt, encryptor, CryptoStreamMode.Write)) Using (MemoryStream msEncrypt = new MemoryStream()) ICryptoTransform encryptor = aesAlg.CreateEncryptor(aesAlg.Key, aesAlg.IV) Static byte Encrypt(SymmetricAlgorithm aesAlg, string plainText) String roundtrip = Decrypt(symmetricAlgorithm, encrypted) Ĭonsole.WriteLine("Original:", roundtrip) Using (SymmetricAlgorithm symmetricAlgorithm =īyte encrypted = Encrypt(symmetricAlgorithm, original) I have simple symmetric encrypt/decrypt application that works fine: namespace Crypto