在这个密码学帖子中它说
链条可以随心所欲地运行，直到到达原始输入为止。当它达到那个点时，它只会重复自己，它将毫无用处。
所以我的出发点是12345，但我无法到达终点并且有一个无限循环，因为12345不会重复。我正在使用qt4.7（lib 版本：4.7.3）来实现这一点。这是我的代码
rainbowTable::rainbowTable(QWidget *parent) :
QWidget(parent),
ui(new Ui::rainbowTable)
{
ui->setupUi(this);
passwordLength = 5;
qDebug() << getLastReduction("12345",false);
}
QString rainbowTable::hashString(QString value)
{
QString dataToReturn = QString(QCryptographicHash::hash((value.toAscii()),QCryptographicHash::Md5).toHex());
return dataToReturn;
}
QString rainbowTable::reductionOfString(QString hash)
{
QString dataToReturn = "";
int iterator = 0;
while ( iterator < hash.count() )
{
if ( hash.at(iterator) == '0' ||
hash.at(iterator) == '1' ||
hash.at(iterator) == '2' ||
hash.at(iterator) == '3' ||
hash.at(iterator) == '4' ||
hash.at(iterator) == '5' ||
hash.at(iterator) == '6' ||
hash.at(iterator) == '7' ||
hash.at(iterator) == '8' ||
hash.at(iterator) == '9' )
{
dataToReturn += hash.at(iterator);
if( dataToReturn.count() == passwordLength )
break;
}
iterator++;
}
return dataToReturn;
}
QString rainbowTable::getLastReduction(QString value,bool isHash)
{
int flagToAvoidImmediateExit = 0;
if( isHash )
{
QString startPoint = value;
startPoint = reductionOfString(startPoint);
QString endPoint = "";
QString tempPoint = startPoint;
while( startPoint != tempPoint || flagToAvoidImmediateExit == 0 )
{
flagToAvoidImmediateExit = 1;
endPoint = tempPoint;
tempPoint = hashString(tempPoint);
tempPoint = reductionOfString(tempPoint);
qDebug() << tempPoint;
}
return endPoint;
}
else
{
QString startPoint = value;
QString endPoint = "";
QString tempPoint = startPoint;
while( startPoint != tempPoint || flagToAvoidImmediateExit == 0 )
{
flagToAvoidImmediateExit = 1;
endPoint = tempPoint;
tempPoint = hashString(tempPoint);
tempPoint = reductionOfString(tempPoint);
qDebug() << tempPoint;
}
return endPoint;
}
}
这是几秒钟的调试输出：
"38064"
"37923"
"59636"
"14842"
"81105"
"83011"
"84978"
"72903"
"28301"
"59067"
"94222"
"35329"
"75907"
"52980"
"64297"
"36654"
"12207"
"83738"
"03523"
"79083"
"15597"
"32652"
"13934"
"88497"
"75435"
"79791"
"58265"
"09856"
"18041"
"43966"
"65978"
"64242"
"52739"
"55704"
"56811"
"58183"
"68597"
"84064"
"85717"
"46438"
"18042"
"71321"
"88067"
"70648"
"83580"
"11878"
"32297"
"52376"
"41289"
"07909"
"50439"
"03819"
"50325"
"82736"
"41621"
"05497"
"15546"
"64017"
"90503"
"13150"
"30287"
"01749"
"81308"
"12036"
"37241"
"35850"
"97225"
"80539"
"17472"
"63098"
"85818"
"18438"
"26139"
"09545"
"97042"
"63672"
"37406"
"41180"
"14910"
"28900"
"29729"
"56861"
"16208"
"83565"
"30912"
"95541"
"08468"
"29539"
"93679"
"42487"
"95833"
"42793"
"97064"
"18087"
"75623"
"13910"
"60404"
"52557"
"95932"
"65477"
"28304"
"08456"
"27849"
"11429"
"38896"
"08634"
"97107"
"96385"
"44159"
"32875"
"17063"
"86213"
"85052"
"46852"
"97541"
"81412"
"31199"
"96618"
"16178"
"56100"
"50394"
"42087"
"90552"
"51966"
"13598"
"28757"
"38715"
"71025"
"61334"
"43686"
"74633"
"50360"
"99883"
"01361"
"49662"
"62929"
"07280"
"59161"
"32509"
"93670"
"95649"
"15206"
"99927"
"93692"
"37748"
"23350"
"74680"
"68259"
"04819"
"26627"
"65968"
"06919"
"09194"
"50084"
"74452"
"23763"
"17953"
"35026"
"86691"
"67542"
"95634"
"00793"
"20270"
"24386"
"35606"
"76055"
"00010"
"00798"
"30867"
"20697"
"02143"
"12044"
"05098"
"52828"
"98446"
"54039"
"08778"
"98405"
"92267"
"71783"
"61953"
"87447"
"66505"
"66535"
"01776"
"90120"
"51497"
"56082"
"18253"
"15222"
"74769"
"19614"
"86376"
"65391"
"43365"
"90484"
"32717"
"75052"
"16186"
"89444"
"15439"
"65166"
"75785"
"72462"
"75920"
"91383"
"41678"
"94123"
"61751"
"47976"
"67798"
"59438"
"10180"
"65854"
"40218"
"77990"
"44843"
"84554"
"52350"
"73347"
"51901"
"61155"
"30316"
"83096"
"64946"
"05985"
"24208"
"28718"
"02241"
"22303"
"23331"
"18410"
"54868"
"51723"
"06401"
"49554"
"65577"
"28105"
"42319"
"34167"
"85036"
"98679"
"08594"
"31075"
"80514"
"11517"
"66780"
"33411"
"83180"
"61910"
"70423"
"16885"
"09107"
"83702"
"81842"
"88430"
"59146"
"29140"
"47236"
"29625"
"03078"
"26540"
"79321"
"41649"
"10210"
"75702"
"12020"
"36877"
"57307"
"03222"
"46603"
"58449"
"94709"
"01436"
"84975"
"39385"
"15952"
"67607"
"91666"
"34456"
"53385"
"21512"
"06712"
"42073"
"61343"
"66825"
"70199"
"73203"
"60216"
"39469"
"84324"
"47850"
"84825"
"52471"
"92397"
"86051"
"33676"
"04221"
"79740"
"11573"
"26304"
"52510"
"12679"
"05930"
"49607"
"10880"
"99174"
"53967"
"06397"
"25700"
"96721"
"94694"
"96566"
"31746"
"57359"
"84870"
"06236"
"10673"
"45914"
"19209"
"32478"
"38824"
"71178"
"22983"
"36320"
"46594"
"66538"
"80495"
"35645"
"38064"
"37923"
"59636"
"14842"
"81105"
"83011"
"84978"
"72903"
"28301"
"59067"
"94222"
"35329"
"75907"
"52980"
"64297"
"36654"
"12207"
"83738"
"03523"
"79083"
"15597"
"32652"
"13934"
"88497"
"75435"
"79791"
"58265"
"09856"
"18041"
"43966"
"65978"
"64242"
"52739"
"55704"
"56811"
"58183"
"68597"
"84064"
"85717"
"46438"
"18042"
"71321"
"88067"
"70648"
"83580"
"11878"
"32297"
"52376"
"41289"
"07909"
"50439"
"03819"
"50325"
"82736"
"41621"
"05497"
"15546"
"64017"
"90503"
"13150"
"30287"
"01749"
"81308"
"12036"
"37241"
"35850"
"97225"
"80539"
"17472"
"63098"
"85818"
"18438"
"26139"
"09545"
"97042"
"63672"
"37406"
"41180"
"14910"
"28900"
"29729"
"56861"
"16208"
"83565"
"30912"
"95541"
"08468"
"29539"
"93679"
"42487"
"95833"
"42793"
"97064"
"18087"
"75623"
"13910"
"60404"
"52557"
"95932"
"65477"
"28304"
"08456"
"27849"
"11429"
"38896"
"08634"
"97107"
"96385"
"44159"
"32875"
"17063"
"86213"
"85052"
"46852"
"97541"
"81412"
"31199"
"96618"
"16178"
"56100"
"50394"
"42087"
"90552"
"51966"
"13598"
"28757"
"38715"
"71025"
"61334"
"43686"
"74633"
"50360"
"99883"
"01361"
"49662"
"62929"
"07280"
"59161"
"32509"
"93670"
"95649"
"15206"
"99927"
"93692"
"37748"
"23350"
"74680"
"68259"
"04819"
"26627"
"65968"
"06919"
"09194"
"50084"
"74452"
"23763"
"17953"
"35026"
"86691"
"67542"
"95634"
"00793"
"20270"
"24386"
"35606"
"76055"
"00010"
"00798"
"30867"
"20697"
"02143"
"12044"
"05098"
"52828"
"98446"
"54039"
"08778"
"98405"
"92267"
"71783"
"61953"
"87447"
"66505"
"66535"
"01776"
"90120"
"51497"
"56082"
"18253"
"15222"
"74769"
"19614"
"86376"
"65391"
"43365"
"90484"
如您所见12345，不重复，但其他数字重复并具有无限循环。我的出发点错了吗？
