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import java.io.*;
public class decrypt {
public static void main(String[] args) {
System.out.println("hello, world!");
InputStream input = null;
try {
input = new FileInputStream("1k7vcor");
} catch (FileNotFoundException e) {
}
byte[] flag_str = new byte[0xb];
try {
input.read(flag_str);
} catch (IOException e) {
}
int flag = (int)flag_str[8] & 0xff | ((int)flag_str[9] & 0xff) << 8 | ((int)flag_str[10] & 0xff) << 0x10;
byte[] content_tmp = new byte[1];
try {
input.read(content_tmp);
} catch (IOException e) {
}
decrypt(flag, content_tmp[0], input);
}
static void decrypt(int flags, byte content, InputStream input) {
OutputStream output = null;
int iVar1;
InputStream pIVar2;
Object ref_00;
ByteArrayOutputStream local_0;
byte[] pbVar3;
int iVar4;
Object[] ppOVar5;
local_0 = new ByteArrayOutputStream();
pbVar3 = new byte[0x1000];
while( true ) {
iVar1 = Math.min(flags,0x1000);
try {
iVar1 = input.read(pbVar3,0,iVar1);
} catch (IOException e) {
}
if ((iVar1 == -1) || (iVar1 == 0)) break;
flags = flags - iVar1;
iVar4 = 0;
while (iVar4 < iVar1) {
pbVar3[iVar4] = (byte)(pbVar3[iVar4] ^ content);
iVar4 = iVar4 + 1;
}
local_0.write(pbVar3,0,iVar1);
}
try {
output = new FileOutputStream("decrypted");
local_0.writeTo(output);
} catch (FileNotFoundException e) {
} catch (IOException e2) {
}
}
}
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