There is an initial permutation ip of the 64 bits of the message data m . this rearranges the bits according to the permutation table , where the entries in the table describe the new arrangement of the bits from their initial order 為文件密碼術執(zhí)行這一操作仍然是我們希望在以后進行的嘗試,但目前沒有計劃[這樣做] 。不過,我們確實有計劃在聯(lián)網(wǎng)的這一領域中依賴于我們以前的工作。