Quote from: Anenome5 on May 06, 2013, 05:35:01 PM

So do we all trust the RNG seed used by Bitaddress.org enough to consider this a good solution? I applaud you for making it, it's quite needed, but want to make sure it's up to snuff before I buy one. It's likely you already have my bitcoin you just don't know it yet Tongue

Thanks for the kind words

Right now it uses vanitygen for the paper wallets. Vanitygen is considered pretty safe, but I plan to add unique entropy to /dev/random from random.org which gets its entropy from atmospheric noise, so that every Piper unit is unique. Don't worry though, I will not release Piper unless the bitcoin community is satisfied with the key generation algorithm/seeding process.

Here's some more info on how vanitygen generates it's keys, from the thread here on bitcointalk:

Quote from: samr7 on July 04, 2011, 03:29:50 AM

How secure are the addresses generated by this program? Will someone be able to guess the private key and steal my BTC?

Vanitygen uses the OpenSSL random number generator. This is the same RNG used by bitcoin and a good number of HTTPS servers. It is regarded as well-scrutinized. On Linux, the RNG will be seeded from /dev/urandom. Guessing the private key of an address found by vanitygen will be no easier than guessing a private key created by bitcoin itself. Nonetheless, if you feel the default RNG is unable to provide numbers that are sufficiently difficult to guess, vanitygen can be directed to seed the RNG from an external file using the -s option.

To speed up address generation, vanitygen uses the RNG to choose a private key, and literally increments the private key in a loop searching for a match. As long as the starting point is not disclosed, if a match is found, the private key will not be any easier to guess than if every private key tested were taken from the RNG. Vanitygen will also reload the private key from the RNG after 10,000,000 unsuccessful searches (100M for oclvanitygen), or when a match is found and multiple patterns are being searched for.