In this thesis , we describe the mechanism of des in detail ; based on the iterative trait of des grouping cipher , we discuss the question how to use fpga to complete high - speed implementation of algorithm . and we propose the method about the creation of subkey , design of sbox , design of pipeline and subkey delay control 本文详细分析了des机理,根据des分组算法迭代运算的特点,对如何用fpga高速实现算法进行了分析和讨论,给出了子密钥生成、 sbox设计、流水线设计及子密钥延迟控制的设计方法。
Specifications : power input : standard 220vac power output : standard 12vdc , 5a control electric locks or bolts directly lessen the load of access controller save project wires with ups terminal which can connect with battery lower potential trouble nc no output control all kinds of electric locks has delay control circuit unlock delay time in 0 10s auto protective function dimension : 222 x 222 x 83 mm weight : 2580g 功能特性:交流输入:标准220vac , 50hz直流输出:标准12vdc , 5a直接控制电锁。可减小门禁控制器的负荷,节省工程布线,减少故障隐患。设nc no输出,可控制各种类型的电锁,设延时控制电路,开锁时间可在0 - 10秒,设开门按钮输入,可直接开启电锁。
Function : power input : standard 220vac , 50hz ; power output : no load 12 . 4 - 13 . 63vdc , with load dc12v 13v standard current output : 5a moment current output : 5a control electric locks or bolts directly , reduce the load of access controller save project lines lower potential trouble have output nc no , control all kinds of electric locks has delay control circuit , unlock delay in 0 - 10s use exit button , press to 0pen the electric lock directly auto self - protection function : when short circle and other unexpected situation happen , the power supply can melt the fuse to protect itself 功能特性:交流输入:标准ac220v 50hz直流输出:空载输出dc12 . 4v 13 . 63v负载输出dc12v 13v标准输出电流5a瞬间输出电流5a直接控制电锁:可减小门禁控制器的负荷,节省工程布线,减少故障隐患。设nc no输出,可控制各种类型的电锁。设延时控制电路,开锁时间可在0 10秒。