/* ----------------------------------------------------------------
* 功 能：SINGLE_DES解密
* 输入参数：uszKey 解密密钥
* uszSrc 解密前数据
* 输出参数：uszDest 解密后数据
* 返 回 值：
* 作 者：
* 日 期：
* 调用说明：
* 修改日志：修改日期 修改者 修改内容简述
* ----------------------------------------------------------------
*/
void _DES(unsigned char *uszKey,unsigned char *uszSrc,unsigned char *uszDest)
{
char tmp[64];
expand0(uszKey,tmp);
setkeystar((unsigned char*)tmp);
discrypt0(uszSrc, uszDest);
}
//_declspec(dllexport)
void _DES(LPCSTR key, LPCSTR text, LPBYTE mtext)
{
char tmp[64];
int len;
int i, j;
char keytmp[10];
len = strlen(text);
j = strlen(key);
for(i = 0; i < 8; i++) {
if( i < j )
keytmp[i] = key[i];
else
keytmp[i] = 'x';
}
keytmp[i] = '\0';
expand0(keytmp, tmp);
setkeystar(tmp);
i = len % 8;
if( i != 0 ) {
for(j = 0; j < i; j++) {
mtext[j] = text[j] ^ (char)0xFF;
}
}
for( ; i < len; i += 8 ) {
discrypt0((LPBYTE)&text[i], (LPBYTE)&mtext[i]);
}
mtext[len] = '\0';
}
void _DES(unsigned char *key,unsigned char *text, unsigned char *mtext) {
char tmp[64];
expand0(key, tmp);
setkeystar(tmp);
discrypt0(text, mtext);
}
void ip(unsigned char *text,char *ll, char *rr)
{
int i;
char buffer[64];
expand0(text,buffer);
for (i=0;i<32;i++)
ll[i]=buffer[ip_tab[i]-1];
for (i=0;i<32;i++)
rr[i]=buffer[ip_tab[i+32]-1];
}
void _Des(unsigned char *key,unsigned char *text,unsigned char *mtext)
{
unsigned char tmp[64];
unsigned char keybuf[9];
unsigned char textbuf[9];
unsigned char mtextbuf[9];
memset(keybuf,0,9);
memset(textbuf,0,9);
memset(mtextbuf,0,9);
aschex_to_bcdhex11((char*)key,16,(char*)keybuf);
aschex_to_bcdhex11((char*)text,16,(char*)textbuf);
expand0(keybuf,tmp);
setkeystar(tmp);
discrypt0(textbuf,mtextbuf);
bcdhex_to_aschex11((char*)mtextbuf,8,(char*)mtext);
}