6d9818b8e4
Shreds' signatures should be verified before they reach retransmit stage, and if the leader is unknown they should fail signature check. Therefore retransmit-stage can as well expect to know who the slot leader is and otherwise just skip the shred. Blockstore checking signature of recovered shreds before sending them to retransmit stage: https://github.com/solana-labs/solana/blob/4305d4b7b/ledger/src/blockstore.rs#L884-L930 Shred signature verifier: https://github.com/solana-labs/solana/blob/4305d4b7b/core/src/sigverify_shreds.rs#L41-L57 https://github.com/solana-labs/solana/blob/4305d4b7b/ledger/src/sigverify_shreds.rs#L105