string SolitaireCrypto::decrypt() {
if (keystream.length() != ciphertext.length()) {
cleartext.assign("");
return "";
}
string output("");
char keywork;
char cipherwork;
char outwork;
for(unsigned int i=0; i<keystream.length(); i++) {
keywork=charCodeAt(keystream[i]);
keywork=(keywork-64)%26;
cipherwork=charCodeAt(ciphertext[i]);
cipherwork=(cipherwork-64)%26;
outwork=(cipherwork-keywork)%26;
if(outwork<0) {outwork=26+outwork;}
outwork=outwork+64;
if(outwork==64) {outwork=90;}
output += fromCharCode(outwork);
}
cleartext.assign(output);
return output;
}
string SolitaireCrypto::encrypt() {
if (keystream.length() != cleartext.length()) {
ciphertext.assign("");
return "";
}
string output("");
char keywork;
char clearwork;
char outwork;
for(unsigned int i=0; i<keystream.length(); i++) {
keywork=charCodeAt(keystream[i]);
keywork=(keywork-64)%26;
clearwork=charCodeAt(cleartext[i]);
if(clearwork>=65&&clearwork<=90) {clearwork=(clearwork-64)%26;}
if(clearwork>=97&&clearwork<=122) {clearwork=(clearwork-96)%26;}
outwork=(clearwork+keywork)%26;
outwork=outwork+64;
if(outwork==64) {outwork=90;}
output += fromCharCode(outwork);
}
ciphertext.assign(output);
return output;
}
void SolitaireCrypto::keydeck() {
resetDeck();
for(uint8_t i=0;i<passkey.length();i++) {
solitaire();
countcut(charCodeAt(passkey[i])-64);
}
}
CompletionType evaluate()
{
Register<Value> value;
switch (method)
{
case ToString:
case ValueOf:
if (!getThis()->isObject())
{
throw getErrorInstance("TypeError");
}
value = static_cast<ObjectValue*>(getThis())->getValueProperty();
if (!value->isString())
{
throw getErrorInstance("TypeError");
}
break;
case CharAt:
value = charAt();
break;
case CharCodeAt:
value = charCodeAt();
break;
case Concat:
value = concat(getThis());
break;
case IndexOf:
value = indexOf(getThis());
break;
case LastIndexOf:
value = lastIndexOf(getThis());
break;
case LocaleCompare:
value = localeCompare(getThis());
break;
case Match:
value = stringMatch();
break;
case Replace:
value = stringReplace();
break;
case Search:
value = stringSearch();
break;
case Slice:
value = slice(getThis());
break;
case Split:
value = stringSplit();
break;
case Substring:
value = substring(getThis());
break;
case Substr:
value = substr(getThis());
break;
case ToLowerCase:
case ToLocaleLowerCase:
value = toLowerCase(getThis());
break;
case ToUpperCase:
case ToLocaleUpperCase:
value = toUpperCase(getThis());
break;
}
return CompletionType(CompletionType::Return, value, "");
}
