<membership defaultProvider="SqlProvider" userIsOnlineTimeWindow="15">
            <providers>
                <clear />
                <add
                    name="SqlProvider"
                    type="System.Web.Security.SqlMembershipProvider, System.Web, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"
                    connectionStringName="SiteDatabase"
                    applicationName="WPR"
                    minRequiredPasswordLength="6"
                    minRequiredNonalphanumericCharacters="0"
                    enablePasswordRetrieval="false"
                    enablePasswordReset="true"
                    requiresQuestionAndAnswer="false"
                    requiresUniqueEmail="true"
                    passwordFormat="Hashed" />
            </providers>
        </membership>

Clear = 0,
Hashed = 1,
Encrypted = 2,