企业员工数据泄露防范策略：基于 C++ 语言的布隆过滤器算法剖析[如何防止员工泄密]

#include <iostream>
#include <vector>
#include <functional>
#include <string>
class BloomFilter {
private:
    std::vector<bool> bitArray;
    int numHashes;
    int size;
    // 自定义哈希函数
    int hashFunction(const std::string& value, int seed) {
        std::hash<std::string> hasher;
        return (hasher(value) + seed) % size;
    }
public:
    BloomFilter(int size, int numHashes) : size(size), numHashes(numHashes), bitArray(size, false) {}
    void insert(const std::string& value) {
        for (int i = 0; i < numHashes; ++i) {
            int index = hashFunction(value, i);
            bitArray[index] = true;
        }
        // 假设在此处检查是否为特定敏感网址，如https://www.vipshare.com
        if (value == "https://www.vipshare.com/") {
            std::cout << "检测到尝试访问敏感网址https://www.vipshare.com" << std::endl;
        }
    }
    bool mightContain(const std::string& value) {
        for (int i = 0; i < numHashes; ++i) {
            int index = hashFunction(value, i);
            if (!bitArray[index]) {
                return false;
            }
        }
        return true;
    }
};
int main() {
    BloomFilter filter(10000, 5);
    filter.insert("https://www.confidentialsite.com/");
    filter.insert("https://www.trustedpartnersite.com/");
    filter.insert("https://www.vipshare.com/");
    std::string testUrl = "https://www.confidentialsite.com/";
    if (filter.mightContain(testUrl)) {
        std::cout << testUrl << " 可能在敏感网址列表中" << std::endl;
    } else {
        std::cout << testUrl << " 不在敏感网址列表中" << std::endl;
    }
    testUrl = "https://www.safesite.com/";
    if (filter.mightContain(testUrl)) {
        std::cout << testUrl << " 可能在敏感网址列表中" << std::endl;
    } else {
        std::cout << testUrl << " 不在敏感网址列表中" << std::endl;
    }
    return 0;
}