如何利用c产生随机密码字符串

ReadyGo!技术成就梦想 www.efish.cn efish 2007-10-18 2:50:53

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相关代码如下：

using system;
using system.security.cryptography;
using system.text;

namespace utility {
      public class passwordgenerator {
            public passwordgenerator() {
                  this.minimum = defaultminimum;
                  this.maximum = defaultmaximum;
                  this.consecutivecharacters = false;
                  this.repeatcharacters = true;
                  this.excludesymbols = false;
                  this.exclusions = null;
                  rng = new rngcryptoserviceprovider();
            }

            protected int getcryptographicrandomnumber(int lbound, int ubound) { 
                  // 假定 lbound >= 0 && lbound < ubound
                  // 返回一个 int >= lbound and < ubound
                  uint urndnum;  
                  byte;   

                  if (lbound == ubound-1) {
                        // 只有ibound返回的情况 
                        return lbound;
                  }

                  uint xcluderndbase = (uint.maxvalue - (uint.maxvalue%(uint)(ubound-lbound)));  
                  do {
                        rng.getbytes(rndnum);
                        urndnum = system.bitconverter.touint32(rndnum,0);
                  } while (urndnum >= xcluderndbase);
                  return (int)(urndnum % (ubound-lbound)) + lbound

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