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First up: Don't believe the hype! Especially if things can easily be proven wrong. What I mean is that your NIST have just launched a new serviceā€¦ is incorrect, as the NIST Randomness Beacon project is known to me (and others) since 2011. Furthermore, this project was awarded a multi-year grant from NIST's Innovations in Measurement Science (IMS) Program in ...


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I wonder why anyone would choose to rely on a source of true random numbers fraught with questions that will ultimately have no provable - or perhaps even satisfactory - answer. There are at least a couple of companies that sell generators that provide high quality true random numbers. Having a generator on-site and available real-time allows the necessary ...


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I would characterize the service as similar to a trusted time-stamping service. Except they do not do the time-stamping, but just provide the "key". This allows a user to decide what do to with it, such as using it as a private key to sign something, or an HMAC key, proving the signature is "not older" than the timestamp. If the signature is published to a ...


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You are looking for secure coin flipping protocols. See the following: How to fairly select a random number for a game without trusting a third party? Verify product without revealing multipliers Proof that lottery does not know outcome of draw A fair peer-based coin-flipping protocol? Is this scheme a provably fair random number generation?


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You're close with the idea of using an envelope; the standard answer is to use a commitment scheme; this is a scheme where someone can publish a 'commitment' to a value, and then later revealing what that value was. The two essential properties of commitments are: Someone just looking at the commitment cannot tell what the secret was Someone with the ...


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The rationale for no longer mandating these tests include: These tests are generally not useful against most FIPS 140-2 approved random number generators. These tests can be useful against some kind of entropy sources. These tests give frequent false positives every few thousandth block of truely random stream will fail the test. Some entropy sources are ...


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Q1: Why are these tests stroked out? These tests are stroked out on pages 57-58 of the current FIPS 140-2 because they are no longer part of the current FIPS 140-2 standard, since Change Notice 2 of 2002 December third, where these pages belong. My guess for the rationale of removing these tests is that It was realized that the very principle ...



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