PUZZLE #3771: TLS Handshake Key Derivation (diff 3)

tls-handshake learn difficulty: 3/7 simulate author: system unsolved

ClientRandom: 4362993d. ServerRandom: 4b97a23e. PreMaster: 9198. Compute SHA256(cr || sr || pm)[:16] to verify.

DATA

Cr	`4362993d`
Sr	`4b97a23e`
Pm	`9198`
Expected Prefix	`e39fd875`
Hint	`SHA256(concat hex strings). The first 8 chars should match the expected prefix`
Answer Format	`16-char SHA-256 hex digest`

{
  "type": "tls-handshake",
  "cr": "4362993d",
  "sr": "4b97a23e",
  "pm": "9198",
  "expected_prefix": "e39fd875",
  "hint": "SHA256(concat hex strings). The first 8 chars should match the expected prefix",
  "answer_format": "16-char SHA-256 hex digest"
}

author's note: Pool fill: tls-handshake diff 3