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13 sats \ 1 reply \ @k00b OP 31 Jul \ parent \ on: Mk3 Security Advisory security bitcoin bitdevs

I recommend reading block's report: https://engineering.block.xyz/blog/predictable-rng-fallback-and-32-bit-reseed-in-coldcard-firmware

The problem wasn't that they lacked a good entropy source. It's that they had a bug that made them choose a bad entropy source.

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114 sats \ 0 replies \ @sime 31 Jul

Yes, but entropy mixing allows you to choose the better entropy.

Assuming the mixing itself doesn't have a bug.

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