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Quantum random numbers can pass the tests and still leak clues to attackers
The European Telecommunications Standards Institute (ETSI) published technical report ETSI TR 104 171, which provides guidance on building and evaluating quantum random number generators (QRNGs). The report identifies weaknesses in QRNG devices and supporting systems that could compromise the security of the random numbers they produce, even if those numbers pass standard tests.
Why it matters: Organizations implementing quantum random number generators for cryptographic key generation need to understand that passing validation tests does not guarantee resistance to side-channel attacks or device-level flaws that could leak information to adversaries.
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