FAQ - Frequently Asked Questions:

1. Will the free version keep working after 60 days?

Yes. The free version of VMPCrypt (shareware) is a fully functional application. In accordance with the law you can use it for the period of 60 days. After this time however the application will still keep working. The decision whether to buy the Full Licence is only up to you. By buying the Full Licence you help us develop VMPCrypt and conduct further research.


2. Do I need encryption?

Encryption is like insurance. It does not give us daily benefits but it allows us to feel safe. It lets us be sure that no strangers will get to know our private and secret information.

Encrypted data looks like a random string of characters. We cannot tell absolutely anything from it. We cannot even guess if this is a picture, text of an agreement or maybe an email. Even if encrypted data leaks it remains safe because it is completely illegible for the person who intercepted it.

Encryption can be especially useful when sending data through the Internet. There we never know who touches our data on its way.

Encryption simply allows us to enjoy the comfort of privacy.


3. How does encrypted data look like?

hFsDTF0r1S27ijzOrVM9pQ8ISbSw7YmjC3. This question can look like this after encryption. What's more the same data encrypted with the same key in VMPCrypt look differently each time. hXVyS7myPkJOUblLZShrFfezcSVSgLpq4t is the same question encrypted at another time.


4. Is encryption difficult?

No! it is enough to select the file, enter the password and that's it! All the hard job - secure encryption of the file - will be done for us by the application. Encryption of emails is also very easy. the application has a built-in edit window. We can edit the message there, press the "Encrypt" button, enter the password and that's it! The message is encrypted and ready to send.


5. Why is VMPCrypt worth its price?

VMPCrypt is a top quality product and along with the licence it offers lifelong customer care.

- The application is perfectly designed in all aspects of security.

- Since the release in 2004 we never had to publish an update fixing a security problem.

- Every client receives a lifelong access to free updates of the application.

- Every client receives a lifelong access to free technical support.

- Unique features of using multiple passwords to one encryption and joining many passwords into one.

- Encryption strength - up to 512 bits.

- Additionally strengthened security thanks to the function of generating passwords from random mouse moves.

- High efficiency. The operation of file encryption takes approximately the same amount of time as only the operation of copying these files.

- option of unrecoverable wiping of files with up to 99 rounds.


6. What does the 512-bit security level offered by VMPCrypt mean?

First of all it means that nobody will be able to read your data. Even the richest corporations or government agencies.

The 512-bit key means that the attacker would need to search through 1000000...000 possible keys. (154 zeros in this number... This is a billion billion billion... billions - the word "billion" is repeated 17 times). Our civilization will probably never be able to perform such a number of operations even if it built a supercomputer of all atoms in the universe.

VMPC is a symmetric algorithm (encryption and decryption is done with the same key). Let's remember not to mix up symmetric keys and RSA keys.

Security level of a 512-bit symmetric key exceeds the security of a 30.000-bit RSA key! For comparison - a commonly used 1024-bit RSA key is equivalent to only a 80-bit symmetric key and a 3072-bit RSA key to a 128-bit symmetric key. This way VMPCrypt offers security level looking way ahead and probably in thousand years it will not be possible to break so long keys and this way data encrypted with VMPCrypt.


7. How to send encrypted file or email to a person who does not have VMPCrypt?

It is simple! Decryption with VMPCrypt is free! On our website a free program - the Decryptor - is available. it can be downloaded and used freely without any limits. It can decrypt all sorts of data encrypted with VMPCrypt (files, emails, books). Of course decryption is possible only after entering the correct password. Download Decryptor.


8. Can you - as the authors of the application - decrypt my data without the password?

No. Security in VMPCrypt (and in all other good encryption tools) comes only in the key (the password). Specification of our algorithm is free, it was even published on an international scientific conference (FSE'04) yet still without the correct password nobody can decrypt the data. Even us as the application authors.


9. Can I use the same password for encryption many times and is it safe?

Yes. Even the same data (e.g. the same file) encrypted with VMPCrypt many times (even billions of times) will look completely different each time! Theoretically you could use one password all your life. The only reason why it is worth to change the password from time to time is the risk that the password might leak.


10. Is it possible to get the application individually modified to my requirements?

Yes. Such orders are negotiated individually and require additional costs but they are possible.


11. We have a problem in designing security system in our company. Could you offer your expertise and help?

Yes. If only our competences allow us to help we do security-related technology consulting , especially in the area of designing security systems using symmetric encryption. One of our realized projects was securing digital press against illegal copying using our technology in www.e-kiosk.pl, publisher of electronic press.