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#1 Generate encryption code with webcam

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Generate encryption code with webcam

This site uses cookies to deliver our services and to show you relevant ads and job listings. By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. I have read from a real random number generator, based on a webcam "randcam". My problem is, that I do not really understand how the generation of the random numbers works. Has anyone heard of this principle before and can give some hints how it could be implemented? And how randomly is this method, I've read it should give real random numbers, but Sex dating in rhea oklahoma this true? Target uniforms wholesale other hits on the first Google result page are about an unrelated Pistonless rotary engine. This page is about a program available from the same site, which tries to gather entropy from a web cam and produce "real" random Generate encryption code with webcam from this. From the linked page I didn't try to Generate encryption code with webcam the source codethe program tries to extract the electrical noise from the photo sensors by calculating differences between following frames, then assembles the difference bytes to blocks and hashes each of them with MD5. The size and thus number of these blocks is adjusted for each difference frame from the measured entropy but it isn't described how this is measured and also dependent on some adjustable factor. The idea to use electronic noise from a web cam as entropy input sounds good. Of course, I would like to see a more theoretic analysis of the entropy which can be gathered, not just statistic tests there are cryptographically awful RNGs which pass all statistical testsand I would use a more sound cryptographic processing of the data. While the broken collision...

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Hello, fellow grey hat hackers and aspiring coders. I'm back again with another python tutorial. Just that this one is gonna be a lot cooler ;-. We gonna make an encryption program, that well you know encrypts all the files on your pendrive or hdd or whatever you want Also lots of thanks to DrapsTV. They have helped me a lot with Python and making awesome programs. The video is here:. So, I was watching Mr. But anyway I wanted to make my own you know. Besides imagine if you mess up real bad and the FBI comes knocking on your door and you know you got so much evidence on your computer and you going to jail It's encrypted and you might get away with it. I'm grey hat I get bored sometimes. But I ain't gonna do it! You know you gotta do this. Some of the modules, you gonna have to download it. So download pycrypto if you don't have it ok Don't worry about the pkg-resources. That's just because I was converting it to exe with pyinstaller and it was giving me problems Now this is the bomb We are using AES encryption so we will have to encrypt it in 64 bits I think I'm not sooo sure about the technicalities that's in the video. But anyway you have to create an Initialization Vector IV that's for the encryption process and we will have to get the filesize so we can get rid of things in the file that are not needed during decryption So you see we gonna need the IV that we stored in the file to add to our decryptor object so we can decrypt our stuff This part just asks the user for the password, whether he wants to encrypt or...

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This will probably not change anytime soon, but with cool new tech built into our phones, you can definitely make yourself stand out by making this process much simpler. A friend recently told me about a free website that lets you create your own QR codes for a whole bunch of different uses. So, how is generating your own QR code actually useful? Well, for those running the latest version of iOS 11 , QR codes are way more useful because the default camera app can now read them automatically. That means there is no need to download a separate app just to scan a QR code. In addition, with iOS 11, not only will it scan the QR code, it will also allow you to incorporate that data onto your phone. For example, if you create a QR code with your WiFi credentials, anyone scanning that code will automatically be able to connect to your WiFi without having to manually type in the password, etc. It depends on the phone you have, the version of Android you are running, etc. The best way to do this is to use a free site called QRCode Monkey. I literally created my first QR code in about 2 minutes. Now enter all the information that you want to store into your QR code. As you can see, you can add quite a bit of information. After you enter the content, they have options to change the colors, add a logo image, customize the shape, etc. Just go ahead and click on the Create QR Code button on the right-hand side. You have now created your custom QR code, which you can print or copy to your phone. I then saved the image to my camera roll and then went into my Notes...

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This site uses cookies to deliver our services and to show you relevant ads and job listings. By using our site, you acknowledge that you have read and understand our Cookie Policy , Privacy Policy , and our Terms of Service. Join Stack Overflow to learn, share knowledge, and build your career. Not having much knowledge in encryption i just wanted to know if any algorithm like RC4 can be implemented on a mobile device given the resource constraints. If yes, any info on any libraries that can be used? Is a smartphone powerful enough to run RC4 over a few hundred bytes of data? By many orders of magnitude, yes. Think about how much processing it takes to support the HTTPS connection you probably just used on a mobile web site. Or, consider that decoding a QR code already requires Reed-Solomon decoding over the same data, which is about as complex. Even K operations is next to nothing on a 1GHz chip. By clicking "Post Your Answer", you acknowledge that you have read our updated terms of service , privacy policy and cookie policy , and that your continued use of the website is subject to these policies. During my literature review, i found that aes has already been implemented in this regard, so my mentor suggested using this and later comparing the performances of both. Thanks for the quick reply. Yes, it has implementations of both. The work is to get access to the webcam image in a Java program on the computer. That I don't know, but if you can get a BufferedImage you're done. Thank you so much, i can now convince my mentor to let me go forward with this! Sign up or log in Sign up using Google. Sign up using Facebook. Sign up...

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This site uses cookies to deliver our services and to show you relevant ads and job listings. By using our site, you acknowledge that you have read and understand our Cookie Policy , Privacy Policy , and our Terms of Service. New browsers support window. I was thinking about recording some audio using HTML5 and calculating the sha bit digest. Which mode should I use for AES encryption? It's already been discussed here - see the second answer for some useful discussion. You mention 'encrypted image' but you probably mean 'hashed' - they're quite different things. In terms of the mode of operation, GCM is a popular choice as it's an authenticated mode which provides data integrity as well as confidentiality. In case you haven't already, you should read up on some of the inherent weaknesses of javascript cryptography here. I'd be cautious about using any sort of automated tool to port a crypto library from one language to another Also, It's probably worth pointing out that as AES specifies a block size of bits regardless of whether the key is , , or bits , the IV should also be bits. Unfortunately, at the time of writing, too many browsers don't support window. The alternative is to use fallback methods. However, those fallback methods are kind've hacky, of dubious security, slow, and have other limitations. For more on the available fallback methods, see Generate cryptographically strong pseudorandom numbers in Javascript? Therefore, life kinda sucks. Basically, the best you can do is test for the existence of window. If it exists, great! If it doesn't exist, fall back to one of the fallback methods -- in that case, life is unhappy, but what can you do, there's no better option. By clicking "Post Your Answer", you acknowledge that you have...

Generate encryption code with webcam

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May 14, - Gathering binary data from a webcam/microphone can be a good (albeit You mention 'encrypted image' but you probably mean 'hashed'. Aug 30, - From the linked page (I didn't try to read the source code), the program tries to get from the differences?, for example), and justifications for the crypto around this. Random Number Generated from White Noise of Webcam. Mar 5, - Desktop QR Code reader and generator for Windows Generates QR Codes for your Decodes QR Codes through a webcam Saves QR Code information to a file /api/v1/uploads//mesy.info

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