[ Python ] Fix wrong PRF label in _derive_master_secret() when EMS is negotiated
Open-source bounty · GitHub (bounty labels) · open as of 17 Oct 2026
- Amount as listed
- $1 fixed “$1” — quoted from GitHub (bounty labels)
- Platform
- GitHub (bounty labels)
- Kind of work
- Open-source bounty · Engineering
- Open to
- not stated by the platform
- Deadline
- not stated by the platform
- Status
- Open
- Checked
- 17 Oct 2026, 18:22 UTC
What the listing says
- derive master secret() on line 273 checks self.negotiated ems but both branches set label = b"master secret", so the Extended Master Secret extension (RFC 7627) is effectively ignored - The EMS branch (line 276) must use b"extended master secret" to produce a different master secret than the non-EMS path Acceptance C
Excerpt we recorded when we checked: Etiketten: 💎 Bounty, bug, good first issue, help wanted, 💎 Bounty, $1, AI Agent friendly, AI only allowed - no humans
Open on GitHub (bounty labels) ↗
The work is offered, scoped and paid by GitHub (bounty labels) — not by GOAT Market. We record what they publish and link to it. Claiming, delivering and getting paid all happen on their site, under their terms.
More open on GitHub (bounty labels)
- [Feature] Implement Basic Anti-Cheat Protection $10,000
- [ Bounty $9k ] [ SDK ] Fix encoding.ts decodeParameter doesn't handle dynamic types — back... $9,000
- [ Bounty $9k ] [ Solidity ] Add gas sponsorship relay for agent transactions — security cr... $9,000
- [ Bounty $9k ] [ API ] Fix agents.py doesn't validate endpoint URL format — testnet findin... $9,000
- [ Bounty $9k ] [ SDK ] Fix rpc.ts doesn't handle JSON-RPC batch response ordering — backwa... $9,000