keygen

publicclassKeyGen{
publicstaticshortgetCRC(Strings,inti,byte[]bytes){
CRC32crc32=newCRC32();
if(s!=null){
for(intj=0;j<s.length();j++){
charc=s.charAt(j);
crc32.update(c);
}
}
crc32.update(i);
crc32.update(i>>8);
crc32.update(i>>16);
crc32.update(i>>24);
for(intk=0;k<bytes.length-2;k++){
bytebyte0=bytes[k];
crc32.update(byte0);
}
return(short)(int)crc32.getValue();
}

publicstaticStringencodeGroups(BigIntegerbiginteger){
BigIntegerbeginner1=BigInteger.valueOf(60466176L);
StringBuildersb=newStringBuilder();
for(inti=0;biginteger.compareTo(BigInteger.ZERO)!=0;i++){
intj=biginteger.mod(beginner1).intValue();
Strings1=encodeGroup(j);
if(i>0){
sb.append("-");
}
sb.append(s1);
biginteger=biginteger.divide(beginner1);
}
returnsb.toString();
}

publicstaticStringencodeGroup(inti){
StringBuildersb=newStringBuilder();
for(intj=0;j<5;j++){
intk=i%36;
//charc;
charc;
if(k<10)
c=(char)(48+k);
else{
c=(char)(65+k-10);
}
sb.append(c);
i/=36;
}
returnsb.toString();
}

publicstaticStringMakeKey(Stringname,intdays,intid,ProductTypeprtype){
id%=10000;
byte[]bkey=newbyte[12];
bkey[0]=(byte)prtype.id();
bkey[1]=13;

Dated=newDate();
longld=d.getTime()>>16;
bkey[2]=(byte)(int)(ld&0xFF);
bkey[3]=(byte)(int)(ld>>8&0xFF);
bkey[4]=(byte)(int)(ld>>16&0xFF);
bkey[5]=(byte)(int)(ld>>24&0xFF);

days&=65535;
bkey[6]=(byte)(days&0xFF);
bkey[7]=(byte)(days>>8&0xFF);

bkey[8]=105;
bkey[9]=-59;
bkey[10]=0;
bkey[11]=0;

intw=getCRC(name,id%10000,bkey);
bkey[10]=(byte)(w&0xFF);
bkey[11]=(byte)(w>>8&0xFF);

BigIntegerpow=newBigInteger("89126272330128007543578052027888001981",10);
BigIntegermod=newBigInteger("86f71688cdd2612ca117d1f54bdae029",16);
BigIntegerk0=newBigInteger(bkey);
BigIntegerk1=k0.modPow(pow,mod);
Strings0=Integer.toString(id);
Stringsz="0";
while(s0.length()!=5){
s0=sz.concat(s0);
}
s0=s0.concat("-");

Strings1=encodeGroups(k1);
s0=s0.concat(s1);
returns0;
}

}

publicenumProductType{
IDEA(1);

privateintid;

privateProductType(intid){
this.id=id;
}

publicintid(){
returnthis.id;
}

publicstaticProductTypegetProductType(Stringstr){
for(ProductTypeproduct:values())
if(product.toString().equalsIgnoreCase(str))
returnproduct;
returnnull;
}
}