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Bron CGGMP21

Type

Security review

Client

Bron Labs

Date

2026-10

Domain

Crypto

Effort

3 wks

Section

Cryptography Reviews

Trail of Bits's security review of Bron Labs (Oct 2026) identified 9 issues: 2 low, 5 informational, and 2 undetermined.

Findings · 9

  1. 1 Deserialization of Paillier elements can panic due to nil dereference Low
  2. 2 Round 1 DKG commitment message does not separate Pedersen values Informational
  3. 3 Deserialization failure on message receive does not include participant ID in error Low
  4. 4 Joye and Paillier safe prime generation reduces entropy of resulting safe primes Informational
  5. 5 Modular integer element size reports bits instead of bytes Informational
  6. 6 User is not sufficiently warned about thread-safe PRNG requirements for prime generation Undetermined
  7. 7 CGGMP21 signing proofs are not bound to their proof slot Informational
  8. 8 Discrete logarithm with ElGamal commitment proof verification does not bind witness to commitment Undetermined
  9. 9 Red Alert rounds lack round-state checks Informational

Findings extracted from the published report PDF. See the full report below for details and remediation.

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