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Views: 1401 | Replies: 7
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Join Date: Apr 2005
Posts: 16
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Newbie Poster
hey all..
does anyone know how to make a decryter
if so can you please tell me step by step
thx
does anyone know how to make a decryter
if so can you please tell me step by step
thx
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Join Date: Jun 2004
Location: H4x0rville
Posts: 2,105
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I know how. It depends on what you have encrypted. If you don't know the encryption scheme then you've got some work ahead of you. Take the ceaser cypher for instance, to reverse the working of that, you simply do something like this:
Of course if your trying to break some ecryption, the work is beyond the scope of me.
public String shiftBack(String text)
{
long convert = 0;
String finalResult = "";
for (int i=0; i<text.length(); i++)
{
convert = (long)text.charAt(i) -3;
finalResult += (char)convert;
}
return finalResult;
}Of course if your trying to break some ecryption, the work is beyond the scope of me.
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Join Date: Apr 2005
Posts: 16
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Newbie Poster
thx for the fast reply
but i do want to break a decrypted file.. so if anyone knows plz tell me
thx
but i do want to break a decrypted file.. so if anyone knows plz tell me
thx
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Join Date: Mar 2005
Location: Bournemouth
Posts: 25
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Light Poster
Why would you want to break a decrypted file??
Can you not just open it?? lol
Can you not just open it?? lol
01001001011001100010000001111001011011110111010100100000011000110110000101101110
00100000011100100110010101100001011001000010000001110100011010000110100101110011
00100000011110010110111101110101001000000110111001100101011001010110010000100000
0110100001100101011011000111000000101110
00100000011100100110010101100001011001000010000001110100011010000110100101110011
00100000011110010110111101110101001000000110111001100101011001010110010000100000
0110100001100101011011000111000000101110
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Join Date: Apr 2005
Posts: 16
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Newbie Poster
yes u can open it but it is unreadable, its like reading hieroglyphics lol so i want to decode them
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Join Date: Jun 2004
Location: H4x0rville
Posts: 2,105
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Do you know the encryption scheme?
If it's for a well known program, chances are you will need to do some research on how to break it. My guess is that it's got some kind of 128 bit encryption scheme going, and the work for that would be HAAARRRDDD.
If it's for a well known program, chances are you will need to do some research on how to break it. My guess is that it's got some kind of 128 bit encryption scheme going, and the work for that would be HAAARRRDDD.
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Join Date: Oct 2004
Location: San Francisco, CA
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Posting Whiz
Good luck if the file was encrypted usign unlimited strenght encryption, which is available for java (if you live in the usa). You just have to download it seperately. Do you know what encryptions scheme was used? Because if the file was hashed then there is no way to retrieve it, except for brute force attack which will take days...weeks...years!!! (depending on the length), days for anything within 5-7 characters, good luck on anything longer! And if you are building a brute force method you definatly do not want to do it in java as it is too slow, use c++ as it is much faster
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Join Date: Apr 2005
Posts: 16
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Newbie Poster
hey all and thaanx for the replys, but by the sound of it, its going too be way too hard to do and take too much time... so im gonna forget it 
sadly, but maybe later on i will try again when java speeds up abit lol
sadly, but maybe later on i will try again when java speeds up abit lol |
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