企業營銷管理系統程序使用說明(VB+SQL2000)將目錄data下的db_Csell_Data.MDF和db_Csell_Log.LDF文件拷貝到SQL Server 2000的“MSSQL”->“data”目錄下.
如果沒有安裝Sql Server,請先安裝Sql Server,安裝SQL SERVER 2000數據庫時,在身份安全驗證機制選項中
必須要選擇“Windows和Sql server混合安全驗證機制。SA的密碼設置為空。如果您已經安裝好了Sql Server 2000,
ElGamal算法既能用于數據加密也能用于數字簽名,其安全性依賴于計算有限域上離散對數這一難題。
密鑰對產生辦法。首先選擇一個素數p,兩個隨機數, g 和x,g, x < p, 計算 y = g^x ( mod p ),則其公鑰為 y, g 和p。私鑰是x。g和p可由一組用戶共享。
ElGamal用于數字簽名。被簽信息為M,首先選擇一個
計算這個智力題:
在這個乘法算式里,每一個字母代表著0-9中的一個數,不同字母代表不同數。
A B C D E F G H
* A J
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E J A H F D G K C
B D F H A J E C
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C C C C C C C C C
請問,C 代表哪個數字?
a Java program that reads in the following values from the standard input device (i.e.
Keyboard) and writes its result on the standard output device (i.e. Console/Monitor):
Inputs:
A: the loan amount in dollars and cents (e.g. 150000.00).
r: the net annual interest rate, expressed as an integer (e.g. 10 which means 10%)
Y: the number of whole remaining years (for repayment)
M: the number of remaining months
Output:
The program should calculate and output the amount of monthly repayments in dollars and cents as
single value (e.g. $840.55)