Exemplo n.º 1
0
        //Encryption Region

        public static string EncryptText(this string password, string input)
        {
            byte[] baPwd = Encoding.UTF8.GetBytes(password);

            // Hash the password with SHA256
            byte[] baPwdHash = SHA256Managed.Create().ComputeHash(baPwd);

            byte[] baText = Encoding.UTF8.GetBytes(input);

            byte[] baSalt      = GetRandomBytes();
            byte[] baEncrypted = new byte[baSalt.Length + baText.Length];

            // Combine Salt + Text
            for (int i = 0; i < baSalt.Length; i++)
            {
                baEncrypted[i] = baSalt[i];
            }
            for (int i = 0; i < baText.Length; i++)
            {
                baEncrypted[i + baSalt.Length] = baText[i];
            }

            baEncrypted = CoreEncrypt.AES_Encrypt(baEncrypted, baPwdHash);

            string result = Convert.ToBase64String(baEncrypted);

            return(result);
        }
Exemplo n.º 2
0
        public static string DecryptString(this string password, string text)
        {
            byte[] baPwd = Encoding.UTF8.GetBytes(password);

            // Hash the password with SHA256
            byte[] baPwdHash = SHA256Managed.Create().ComputeHash(baPwd);

            byte[] baText = Convert.FromBase64String(text);

            byte[] baDecrypted = CoreEncrypt.AES_Decrypt(baText, baPwdHash);

            // Remove salt
            int saltLength = GetSaltLength();

            byte[] baResult = new byte[baDecrypted.Length - saltLength];
            for (int i = 0; i < baResult.Length; i++)
            {
                baResult[i] = baDecrypted[i + saltLength];
            }

            string result = Encoding.UTF8.GetString(baResult);

            return(result);
        }