| 42 | } |
| 43 | |
| 44 | func (st *CookieChecker) Init(pk NoisePublicKey) { |
| 45 | st.Lock() |
| 46 | defer st.Unlock() |
| 47 | |
| 48 | // mac1 state |
| 49 | |
| 50 | func() { |
| 51 | hash, _ := blake2s.New256(nil) |
| 52 | hash.Write([]byte(WGLabelMAC1)) |
| 53 | hash.Write(pk[:]) |
| 54 | hash.Sum(st.mac1.key[:0]) |
| 55 | }() |
| 56 | |
| 57 | // mac2 state |
| 58 | |
| 59 | func() { |
| 60 | hash, _ := blake2s.New256(nil) |
| 61 | hash.Write([]byte(WGLabelCookie)) |
| 62 | hash.Write(pk[:]) |
| 63 | hash.Sum(st.mac2.encryptionKey[:0]) |
| 64 | }() |
| 65 | |
| 66 | st.mac2.secretSet = time.Time{} |
| 67 | } |
| 68 | |
| 69 | func (st *CookieChecker) CheckMAC1(msg []byte) bool { |
| 70 | st.RLock() |