Bitcoin Forum

Updated 3/12/14
http://cryptopapers.com/wp-content/uploads/2014/03/logo-on-blue.png
www.cryptopapers.com - offline paper wallet generator built with javascript.

The app is built in HTML and JavaScript and is very similar to other paper wallet generators like bitaddress.org and bitcoinpaperwallets.com

There will be many advanced features included in this paper wallet generator for starters:

• ZIP download for offline generation
• Supports over 25 coins
• Security dashboard: Gauge your setup's security level in the hopes of achieving Zero Trust
• Import Keys or Generate your own
• RNG Generation: Entropy collection based on mouse movement
• Batch generation and printing of multiple wallets

View current feature list @ www.cryptopapers.com/paper-wallet-features

Full feature list will be announced, all features may not make it into the initial Beta but they'll all get added before release.

Please contact info@cryptopapers.com to sign up for BETA release, or sign up at www.cryptopapers.com

We just released our brand new website today! Our goal is to be the most flexible, easy-to-use, and feature-filled wallet creator out there!

We need BETA testers! Signup on the website!

Please check it out @ www.cryptopapers.com and reply with any comments or suggestions.

Not exactly a stellar feature (http://log.bitcoin-assets.com/?date=08-03-2014#551727).

The problem with mouse-based entropy is that a mouse is controlled by a person, and people are pretty bad at being random. For a demonstration of this, have a go at the machine here (http://www.loper-os.org/bad-at-entropy/manmach.html).

This is something that should probably be known about and compensated for before making claims about advanced features.

You're right, it's not a stellar feature - it's an Essential feature! (and one we thought was worth mentioning)

I would fully agree with you if we were talking about keyboard-supplied entropy. However, mouse entropy is a lot better and this is why all the paper wallet generators do things this way.

I'm not sure if this is getting too technical - but here's how the Entropy process works:

The system starts out with data about your current time, browser, environment, etc to use as the starting RNG Pool.
The pool is then further randomized with between 300 and 400 points of not just mouse coordinates, but the exact time the event was hit.
Each coordinate point is then multiplied together and is factored down to 16 bits of data, per coordinate, plus an additional 32 bits from the time.

Collecting 300-400 coordinates is enough to go through the pool for several passes.

The process of guessing keys that were generated in this way should be no easier than brute-forcing *coin addresses at random.

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Also - the Beta is live!

Head to http://cryptopapers.com to sign up!

I also wanted to add, that while there weren't many more noteworthy features to announce at the time of his original post, we can now include the following, already done:

- BIP38 Encryption / Decryption for all coins
- 8 different variations of wallet including circular, credit-card sized, and coin-shaped
- Over 250 backgrounds
- Color shift, allows you to change the color of any background to whatever you want (Chrome only)

Coming Soon:

- Vanity address creation
- Split-key addresses (addresses requiring 2 private keys to spend)
- More: Vote for which features you want to see the most- http://cryptopapers.com/feedback/

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