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fix: reject single-share Shamir splits #60

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fix: reject single-share Shamir splits #60

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3 changes: 2 additions & 1 deletion src/functions/shamir_secret_sharing.js
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Original file line number Diff line number Diff line change
Expand Up @@ -86,6 +86,7 @@ module.exports = function (S) {


S.__split_secret = (threshold, total, secret, indexBits=8) => {
if (threshold < 2) throw new Error("Minimum 2 shares required");
if (threshold > 255) throw new Error("threshold limit 255");
if (total > 255) throw new Error("total limit 255");
let index_mask = 2**indexBits - 1;
Expand Down Expand Up @@ -167,4 +168,4 @@ module.exports = function (S) {
};

S.__precompute_GF256_expLog(S);
};
};
7 changes: 5 additions & 2 deletions test/jsbtc.test.js
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