Vb6 xor encryption decryption

Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown. The Overflow Blog. Stack Gives Back Safety in numbers: crowdsourcing data on nefarious IP addresses. Featured on Meta. New post summary designs on greatest hits now, everywhere else eventually. Visit chat. Linked 0. In contrast, when the key and the input have the same length, it is impossible for someone to crack the cipher.

So, when the key is smaller than the input, you just reapply it until you reach the end of input. If by instance I wanted to encrypt the word "bonjour" with my key "cle", I would do it this way : bonjour : cleclec : You can see that we simply repeat the key.

The smaller you key, the easiest it will be to crack your cipher obviously. The XOR online cracking often are based on frequency analysis. Connect and share knowledge within a single location that is structured and easy to search. Ideally, the solution should accept text, password arguments and produce readable output without any special characters , so it can be used anywhere without encoding issues.

There are lots of code available for. MD5sum the the text and password together as a one way hash and then to check, you encrypt again and compare with the stored hash. This won't work if you MUST decrypt it again though. Here's my encryption class. I use several constants to define the encryption key because in my mind it's a little more secure from someone trying to decompile the code to find it. Cryptography isn't my thing so maybe I'm kidding myself.

Anyway, I used this class in an ActiveX dll called from other programs to do encryption and the reverse in a separate dll for decryption. I did it this way so people who shouldn't be seeing encrypted data don't even have the dll to do the decrypting.

Change the key constants to what you want 5 long. I use a mix including unprintable characters and it has worked well for me so far. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. You can too! All Our Microsoft Access Products. Reader Choice. PDF Fact Sheet. Celebrating our 35th Year of Software Excellence. Total Access Statistics. Location and Directions.

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