GPCode-What.
One of the most Scary RansomWare Viruses I have read about recently.Its called GPCode-Ask.The problem with the virus is that it has 1024 bit encryption key that it encrypts the fiels with known only to the Virus-Maker.Such a key would require about 15 million modern age computers to be cracked in the right amount of time.The Virus currently is mostly in Russia And Eastern-Europe but you never know when it might end up here on your Computer.Keep your firewalls ready and watch out for any files you dont need on your Emails or anywhere on the Internet.
The Error Message
Your files are encrypted with RSA-1024 algorithm. To recovery your files you need to buy our decryptor. To buy decrypting tool contact us at: ******@yahoo.com
Ill try to explain it simple.When you put in your password somewhere as "udit", the server (in this case) has a pre-defined algorithm that encrypts the words "udit" into alphanumeric strings "10001 1001 01110".That is how your password or any sensitive data is stored in the server or whereever you use it for security purposes, for if it gets stolen, people cant identify it.The key needs to be decrypted(thats why its tough to hack yahoo or msn or google too).
From Viruslist.com:
However, although we detect the virus itself, we can't currently decrypt files encrypted by Gpcode.ak -- the RSA encryption implemented in the malware uses a very strong, 1,024-bit key.The RSA encryption algorithm uses two keys: a public key and a private key. Messages can be encrypted using the public key, but can only be decrypted using the private key. And this is how Gpcode works: it encrypts files on victim machines using the public key that is coded into its body. Once encrypted, files can only be decrypted by someone who has the private key -- in this case, the author or the owner of the malicious program.
The most common method to decipher is Brute-Force Decryption.Using a computer to exhaustively calculate and try every possible key one by one. 2-bit encryption, for example, involves four possible key values:
00, 01, 10, and 11
3-bit encryption involves eight possible values, 4-bit encryption 16 possible values, and so on. Mathematically speaking, 2n possible values exist for an n-bit key.
Now to crack a 1024 Bit Key,it would require around 2(power)1024 attempts which could well be infinity and would require centuries to crack on a normal computer.
More About GPCODE
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