8#ifndef BOTAN_TLS_SEQ_NUMBERS_H_
9#define BOTAN_TLS_SEQ_NUMBERS_H_
11#include <botan/types.h>
64 uint64_t m_write_seq_no;
65 uint64_t m_read_seq_no;
66 uint16_t m_read_epoch;
67 uint16_t m_write_epoch;
90 m_write_seqs[m_write_epoch] = 0;
98 auto i = m_write_seqs.find(epoch);
100 return (
static_cast<uint64_t
>(epoch) << 48) | i->second++;
110 const size_t window_size =
sizeof(m_window_bits) * 8;
112 if(sequence > m_window_highest)
117 const uint64_t offset = m_window_highest - sequence;
119 if(offset >= window_size)
124 return (((m_window_bits >> offset) & 1) == 1);
129 const size_t window_size =
sizeof(m_window_bits) * 8;
131 if(sequence > m_window_highest)
134 const uint64_t offset = sequence - m_window_highest;
135 m_window_highest += offset;
137 if(offset >= window_size)
140 m_window_bits <<= offset;
142 m_window_bits |= 0x01;
146 const uint64_t offset = m_window_highest - sequence;
148 if(offset < window_size)
151 m_window_bits |= (
static_cast<uint64_t
>(1) << offset);
156 m_window_highest = sequence;
163 std::map<uint16_t, uint64_t> m_write_seqs;
164 uint16_t m_write_epoch = 0;
165 uint16_t m_read_epoch = 0;
166 uint64_t m_window_highest = 0;
167 uint64_t m_window_bits = 0;
#define BOTAN_ASSERT(expr, assertion_made)
virtual uint16_t current_read_epoch() const =0
virtual uint64_t next_read_sequence()=0
virtual ~Connection_Sequence_Numbers()=default
virtual void read_accept(uint64_t seq)=0
virtual uint16_t current_write_epoch() const =0
virtual void new_read_cipher_state()=0
virtual bool already_seen(uint64_t seq) const =0
virtual void new_write_cipher_state()=0
virtual uint64_t next_write_sequence(uint16_t)=0
uint64_t next_read_sequence() override
void read_accept(uint64_t sequence) override
uint16_t current_read_epoch() const override
void new_read_cipher_state() override
uint16_t current_write_epoch() const override
uint64_t next_write_sequence(uint16_t epoch) override
bool already_seen(uint64_t sequence) const override
void new_write_cipher_state() override
Datagram_Sequence_Numbers()
uint64_t next_write_sequence(uint16_t) override
uint64_t next_read_sequence() override
void read_accept(uint64_t) override
Stream_Sequence_Numbers()
void new_read_cipher_state() override
void new_write_cipher_state() override
uint16_t current_read_epoch() const override
bool already_seen(uint64_t) const override
uint16_t current_write_epoch() const override
int(* final)(unsigned char *, CTX *)