CODEWITHSUNDEEP
random
runaros
runaros

Reputation: 1842

Random numbers from physical sources on the Internet

What are the addresses of some websites that offers random numbers from physical sources? I'm looking both for free services and services that cost money.

Upvotes: 2

Views: 328

Answers (5)

Adam Davis
Adam Davis

Reputation: 93565

HotBits:

  • Genuine random numbers, generated by radioactive decay.
  • HotBits are generated by timing successive pairs of radioactive decays detected by a Geiger-Müller tube interfaced to a computer.
  • Once the random bytes are delivered to you, they are immediately discarded—the same data will never be sent to any other user and no records are kept of the data at this or any other site.

Secure Server HotBits Request

Upvotes: 2

Jhonny D. Cano -Leftware-
Jhonny D. Cano -Leftware-

Reputation: 18013

I have been using http://www.random.org/, and i like it. Generates random numbers from atmospheric noise, and also is capable of generate:

  • coin flips
  • dice rolling
  • card shuffling

among others, take a look at it.

Upvotes: 4

S.Lott
S.Lott

Reputation: 391846

Many Linux systems have a /dev/random device built in. That provides random numbers from physical sources.

The random number generator gathers environmental noise from device drivers and other sources into an entropy pool

See http://en.wikipedia.org/wiki/Urandom

Upvotes: 0

Eoin Campbell
Eoin Campbell

Reputation: 44268

www.Random.org

Apparently they use Atmospheric noise to generate they're numbers though I'm not sure if they've published their algorithms.

Upvotes: 0

Brian Agnew
Brian Agnew

Reputation: 272257

Sounds like the Quantum Random Bit Generator may be of use ? It relies on photonic emission in semiconductors and the detection thereof by photoelectric effect.

They supply command line and library/API access via various different platforms/frameworks.

Upvotes: 1

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