Exam/key.cpp

#define _CRT_SECURE_NO_WARNINGS
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
int main()
{
	FILE* file = fopen("wordlist.txt", "w+");
	int length = 8;
	for (int length = 8; length <= 16; length++)
	{
		printf("正在生成%d位密钥，请等待\n", length);
		char* buffer = (char*)malloc(sizeof(char) * (length + 1));
		if (!buffer)
		{
			printf("申请内存失败\n");
			continue;
		}
		buffer[length] = '\0';
		for (int i = 0; i < length; i++)
		{
			buffer[i] = 33;
		}
		const int pos = length - 1;
		int done = 0;
		while (!done)
		{
			fprintf(file, "%s\n", buffer);
			buffer[pos]++;
			if ((unsigned char)buffer[pos] == 128)
			{
				buffer[pos] = 33;
				buffer[pos - 1]++;
			}
			for (int i = pos - 1; i > 0; i--)
			{
				if ((unsigned char)buffer[i] == 128)
				{
					buffer[i - 1]++;
					buffer[i] = 33;
				}
			}
			if ((unsigned char)buffer[0] == 128)done = 1;
		}
	}
	fclose(file);
}