diff options
Diffstat (limited to 'src/crypto/tls/handshake_server_tls13.go')
| -rw-r--r-- | src/crypto/tls/handshake_server_tls13.go | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/src/crypto/tls/handshake_server_tls13.go b/src/crypto/tls/handshake_server_tls13.go index 08251b84de..6aa52698a3 100644 --- a/src/crypto/tls/handshake_server_tls13.go +++ b/src/crypto/tls/handshake_server_tls13.go @@ -10,6 +10,7 @@ import ( "crypto" "crypto/hmac" "crypto/rsa" + "encoding/binary" "errors" "hash" "io" @@ -741,6 +742,19 @@ func (hs *serverHandshakeStateTLS13) sendSessionTickets() error { } m.lifetime = uint32(maxSessionTicketLifetime / time.Second) + // ticket_age_add is a random 32-bit value. See RFC 8446, section 4.6.1 + // The value is not stored anywhere; we never need to check the ticket age + // because 0-RTT is not supported. + ageAdd := make([]byte, 4) + _, err = hs.c.config.rand().Read(ageAdd) + if err != nil { + return err + } + m.ageAdd = binary.LittleEndian.Uint32(ageAdd) + + // ticket_nonce, which must be unique per connection, is always left at + // zero because we only ever send one ticket per connection. + if _, err := c.writeRecord(recordTypeHandshake, m.marshal()); err != nil { return err } |