diff options
| author | Dmitry Safonov <[email protected]> | 2023-10-23 19:22:04 +0000 |
|---|---|---|
| committer | David S. Miller <[email protected]> | 2023-10-27 09:35:45 +0000 |
| commit | 0a3a809089eb1d4a0a2fd0c16b520d603988c859 (patch) | |
| tree | b584ef3c79e149b5f9986ed02258d29a48569df8 /net/ipv6/tcp_ao.c | |
| parent | net/tcp: Sign SYN-ACK segments with TCP-AO (diff) | |
| download | kernel-0a3a809089eb1d4a0a2fd0c16b520d603988c859.tar.gz kernel-0a3a809089eb1d4a0a2fd0c16b520d603988c859.zip | |
net/tcp: Verify inbound TCP-AO signed segments
Now there is a common function to verify signature on TCP segments:
tcp_inbound_hash(). It has checks for all possible cross-interactions
with MD5 signs as well as with unsigned segments.
The rules from RFC5925 are:
(1) Any TCP segment can have at max only one signature.
(2) TCP connections can't switch between using TCP-MD5 and TCP-AO.
(3) TCP-AO connections can't stop using AO, as well as unsigned
connections can't suddenly start using AO.
Co-developed-by: Francesco Ruggeri <[email protected]>
Signed-off-by: Francesco Ruggeri <[email protected]>
Co-developed-by: Salam Noureddine <[email protected]>
Signed-off-by: Salam Noureddine <[email protected]>
Signed-off-by: Dmitry Safonov <[email protected]>
Acked-by: David Ahern <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Diffstat (limited to 'net/ipv6/tcp_ao.c')
| -rw-r--r-- | net/ipv6/tcp_ao.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/net/ipv6/tcp_ao.c b/net/ipv6/tcp_ao.c index 99753e12c08c..8b04611c9078 100644 --- a/net/ipv6/tcp_ao.c +++ b/net/ipv6/tcp_ao.c @@ -53,11 +53,12 @@ int tcp_v6_ao_calc_key_skb(struct tcp_ao_key *mkt, u8 *key, const struct sk_buff *skb, __be32 sisn, __be32 disn) { - const struct ipv6hdr *iph = ipv6_hdr(skb); - const struct tcphdr *th = tcp_hdr(skb); + const struct ipv6hdr *iph = ipv6_hdr(skb); + const struct tcphdr *th = tcp_hdr(skb); - return tcp_v6_ao_calc_key(mkt, key, &iph->saddr, &iph->daddr, - th->source, th->dest, sisn, disn); + return tcp_v6_ao_calc_key(mkt, key, &iph->saddr, + &iph->daddr, th->source, + th->dest, sisn, disn); } int tcp_v6_ao_calc_key_sk(struct tcp_ao_key *mkt, u8 *key, |