/********************************************************************
*
* 描述： 对密钥进行处理，并构造矩阵
*
* 参数：
* key1 密钥1
* key2 密钥2
*
* 返回值:
*
********************************************************************/
void setKeys(const char* key1, const char* key2)
{
char* tmpkey1 = delete_repeate(key1);
char* tmpkey2 = delete_repeate(key2);
char* key1_uppercase = strChange(tmpkey1, 0);
char* key2_uppercase = strChange(tmpkey2, 0);
free(tmpkey1);
free(tmpkey2);
tmpkey1 = NULL;
tmpkey2 = NULL;
char* key1_uppercase_source = setSource(uppercase_source, key1_uppercase);
char* key2_uppercase_source = setSource(uppercase_source, key2_uppercase);
free(key1_uppercase);
free(key2_uppercase);
key1_uppercase = NULL;
key2_uppercase = NULL;
setMatrix(lowercase_source, matrix);
setMatrix(key1_uppercase_source, matrix_right_up);
setMatrix(key2_uppercase_source, matrix_left_down);
key1_uppercase_source = NULL;
key2_uppercase_source = NULL;
}
//根据的绝路路径计算文件的md5如：D:\Downloads\d3.ppt
CString ValueMD5(CString file)
{
MD5VAL val;
CString result;
TCHAR chtmp[1024];
file = strChange(file);
FILE *fp = _wfopen(file, L"rb");
if(fp)
{
val = md5File(fp);
swprintf(chtmp,1024,
L"%08x%08x%08x%08x", conv(val.a), conv(val.b), conv(val.c), conv(val.d));
fclose(fp);
}
result.Format(L"%s", chtmp);
return result;
}
/********************************************************************
*
* 描述： 对给定的文件进行处理（只留下字符，全部改为小写字符），并在中间插入消息
*
* 参数：
* sourcename 要处理的文件的文件名
* destname 处理后的文件的文件名
* msg 要插入文件中的信息
*
* 返回值:
*
********************************************************************/
void handleText(const char* sourcename, const char* destname, const char* msg)
{
FILE* sourcefp;
FILE* tmpfp;
FILE* destfp;
const char* tmp = "tmp";//中间文件的文件名
fopen_s(&sourcefp, sourcename, "r");
fopen_s(&tmpfp, tmp, "w+");
fopen_s(&destfp, destname, "w");
char ch = NULL;
while ((ch = fgetc(sourcefp)) != EOF)
{
if (ch >= 'a'&&ch<'z' || ch>'A'&&ch < 'Z')
{
ch = tolower(ch);
fputc(ch, tmpfp);
}
}
int textsize = ftell(tmpfp);
fseek(tmpfp, 0, SEEK_SET);
srand(0);
int offset = rand() % textsize;//插入信息的位置
int charsize = sizeof(char);
int buffercount = 1024;//buffer可以存放1024个char
int buffersize = buffercount*charsize;
int offsetsize = charsize*offset;
int n1 = offsetsize / buffersize;//要读n次
int offsetdelt = offsetsize % buffersize;//读到offset处的最后一次要读的数据的大小
char* buffer = (char*)malloc(buffersize);
for (int i = 0; i < n1; i++)
{
fread_s(buffer, buffersize, charsize, buffercount, tmpfp);
fwrite(buffer, charsize, buffercount, destfp);
}
fread_s(buffer, buffersize, charsize, offsetdelt, tmpfp);
fwrite(buffer, charsize, offsetdelt, destfp);
char* lowermsg = strChange(msg, 1);
fwrite(lowermsg, charsize, strlen(lowermsg), destfp);
free(lowermsg);
lowermsg = NULL;
int left = textsize - offset;
int leftsize = left*charsize;
int n2 = leftsize / buffersize;
int leftdelt = leftsize % buffersize;
for (int i = 0; i < n2; i++)
{
fread_s(buffer, buffersize, charsize, buffercount, tmpfp);
fwrite(buffer, charsize, buffercount, destfp);
}
fread_s(buffer, buffersize, charsize, leftdelt, tmpfp);
fwrite(buffer, charsize, leftdelt, destfp);
free(buffer);
fclose(sourcefp);
fclose(tmpfp);
fclose(destfp);
remove(tmp);
buffer = NULL;
sourcefp = NULL;
tmpfp = NULL;
destfp = NULL;
}
