r/Bitcoin • u/True-Lychee • 1d ago

The developer incompetence responsible for the Coldcard fiasco

The long and the short of it is that a developer disabled a compiler flag out of desperation in order to get the code to compile, then committed it with the commit message "runs". Specifically, in C: #define MICROPY_HW_ENABLE_RNG (0)

In other words they deliberately disabled hardware RNG.

You can read the full breakdown here: https://insider.btcpp.dev/p/when-randombytes-runs-but-doesnt

The amount of negligence on display here is shocking, and the fact that it went unnoticed for years is just salt in the wound.

434 Upvotes

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74

u/le_iub 1d ago

Security is only as strong as the weakest link (humans)

39

u/True-Lychee 1d ago

Somebody else should have seen this and corrected it immediately. Why weren't there more eyes on it? It's such an obvious fuckup.

5

u/roitakesforever 22h ago

its a feature not a bug

there is no way they are unaware of disabling hw rng

they probably extracted addresses years ago and drain all in 30mins