Implement QUIC Header Protection
gfe-relnote: Protected by QUIC_VERSION_99
PiperOrigin-RevId: 247137283
Change-Id: I1deb08d304b7739c3c8fa6b995e55fbd8652dc1e
diff --git a/quic/core/quic_framer.h b/quic/core/quic_framer.h
index 17a87fa..eb811bc 100644
--- a/quic/core/quic_framer.h
+++ b/quic/core/quic_framer.h
@@ -591,6 +591,34 @@
size_t num_ack_blocks;
};
+ // Applies header protection to an IETF QUIC packet header in |buffer| using
+ // the encrypter for level |level|. The buffer has |buffer_len| bytes of data,
+ // with the first protected packet bytes starting at |ad_len|.
+ bool ApplyHeaderProtection(EncryptionLevel level,
+ char* buffer,
+ size_t buffer_len,
+ size_t ad_len);
+
+ // Removes header protection from an IETF QUIC packet header.
+ //
+ // The packet number from the header is read from |reader|, where the packet
+ // number is the next contents in |reader|. |reader| is only advanced by the
+ // length of the packet number, but it is also used to peek the sample needed
+ // for removing header protection.
+ //
+ // Properties needed for removing header protection are read from |header|.
+ // The packet number length and type byte are written to |header|.
+ //
+ // The packet number, after removing header protection and decoding it, is
+ // written to |full_packet_number|. Finally, the header, with header
+ // protection removed, is written to |associated_data| to be used in packet
+ // decryption. |packet| is used in computing the asociated data.
+ bool RemoveHeaderProtection(QuicDataReader* reader,
+ const QuicEncryptedPacket& packet,
+ QuicPacketHeader* header,
+ uint64_t* full_packet_number,
+ std::vector<char>* associated_data);
+
bool ProcessDataPacket(QuicDataReader* reader,
QuicPacketHeader* header,
const QuicEncryptedPacket& packet,
@@ -941,6 +969,10 @@
// Indicates whether this framer supports multiple packet number spaces.
bool supports_multiple_packet_number_spaces_;
+
+ // The length in bytes of the last packet number written to an IETF-framed
+ // packet.
+ size_t last_written_packet_number_length_;
};
} // namespace quic
