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Design Flaw: Per-Byte Shamir Splitting of BIP-39 Mnemonics Causes Entropy Collapse and Non-Unique Reconstruction

Status: Open.

#41 In bitaps-com/jsbtc;

· Petah0411 opened on Dec 13, 2025

Title*: <code>Exploring Shamir (3-of-5) with 2 Shares - ZeroNights X Bounty (PyBTC &amp; JsBTC)</code> - *Body*: Hi @bitaps-com team, exploring *PyBTC* and *JsBTC* for the ZeroNights X Shamir Secret Backup Scheme bounty. Given 2/3 shares: - Share 1: <code>session cigar grape merry useful churn fatal thought very any arm unaware</code> - Share 2: <code>clock fresh security field caution effort gorilla speed plastic common tomato echo</code> Tested <code>recover_secret</code> in both repos—fails as expected (needs 3 shares). No critical flaws yet. Suggestions: - Sanitize logs for invalid shares. - Test edge cases with manipulated inputs. - Document partial-share handling.

Status: Open.

#40 In bitaps-com/jsbtc;

· BTRMMD opened on Dec 7, 2025

Shamir challenge: published zpub does not derive target address; no 2-of-5 threshold downgrade found

Status: Open.

#39 In bitaps-com/jsbtc;

· matuta99 opened on Nov 11, 2025

btc

Status: Open.

#38 In bitaps-com/jsbtc;

· datis56 opened on Oct 19, 2025

dependabot/npm_and_yarn/webpack-5.94.0

Status: Open.

#37 In bitaps-com/jsbtc;

· Mainnet7m1 opened on Aug 24, 2025

Here's a structured breakdown of potential flaws, concerns, and improvements in the code.

Status: Open.

#36 In bitaps-com/jsbtc;

· coryscotthodson-png opened on Aug 2, 2025

Javascript Bugs

Status: Open.

#35 In bitaps-com/jsbtc;

· Coolgamerburst opened on Jun 29, 2025

Error Retrieving Original Mnemonics From 2 Shares whith a Threshold Of 3 Out Of 5.

Status: Open.

#29 In bitaps-com/jsbtc;

· Illuvelijah2004 opened on Mar 25, 2023