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Merge pull request #15 from pezkuwichain/fix/check-deposits-cpu-v2

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perf(deposits): derive the HD master key once, not once per user
This commit is contained in:
SatoshiQaziMuhammed
2026-07-30 02:44:59 -07:00
committed by GitHub
parent 89075cefc3 96cda97635
commit 6c65627cbb
1 changed files with 16 additions and 2 deletions
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supabase/functions/check-deposits/index.ts
+16 -2
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@@ -67,9 +67,23 @@ function base58CheckEncode(payload: Uint8Array): string {
}
// Derive TRC20 address from HD wallet
// mnemonicToSeedSync is PBKDF2 with 2048 iterations and the seed depends only
// on the mnemonic, so deriving it per user burned that cost once per account on
// every run. With ~50 accounts and a one-minute schedule that was enough to hit
// the isolate's CPU ceiling on nearly every invocation, cutting the scan short.
// Derive the master key once and reuse it; only the path varies per user.
let cachedMasterKey: HDKey | null = null;
function getMasterKey(mnemonic: string): HDKey {
if (!cachedMasterKey) {
const seed = bip39.mnemonicToSeedSync(mnemonic, '');
cachedMasterKey = HDKey.fromMasterSeed(seed);
}
return cachedMasterKey;
}
function deriveTronAddress(mnemonic: string, index: number): string {
const seed = bip39.mnemonicToSeedSync(mnemonic, '');
const hdKey = HDKey.fromMasterSeed(seed);
const hdKey = getMasterKey(mnemonic);
const derivedKey = hdKey.derive(`m/44'/195'/0'/0/${index}`);
if (!derivedKey.privateKey) throw new Error('Failed to derive private key');