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WCF/REST hash/salt datamember field
public void AddStudent(Student student)
    {
        student.StudentID = (++eCount).ToString();
        byte[] passwordHash = Hash(student.Password, _passwordSalt); //invalid expression? _passwordSalt?
        student.TimeAdded = DateTime.Now;
        students.Add(student);
    }

protected RNGCryptoServiceProvider random = new RNGCryptoServiceProvider();

public byte[] GenerateSalt() {
    byte[] salt = new byte[10];
    random.GetNonZeroBytes(salt);
    return salt;
}