A subgroup permutation test decides recursive common information for coset RVs, then cashes out in secret-sharing lower bounds.
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01 02 FIPS 140-3 certs can still ship broken crypto, and auditors apparently know the checkbox isn't a security guarantee.03 Firmware, the thing meant to protect keys, allegedly weakened COLDCARD seed entropy and may tie to a $38M BTC theft.04 Blockstream says Jade dodges the Coldcard seed-gen bug, and sketches its multi-source entropy setup for the skeptics.