[Swan] Support for SHA 256-512

Wed Jun 3 10:37:16 UTC 2020

Hello,

I wanted to check if SHA 256 and 512 is supported for IKEv1 and IKEv2 for
esp tunnels.
Following is my conf in which phase 1 passes(ike_sa=1) but fails in phase
2. I have enabled USE_SHA2=true when building libreswan.
Would appreciate your response on this.

Thanks,
Shweta

ipsec.conf:
# cat /etc/config/ipsec.conf
version 2
config setup
protostack = netkey
klipsdebug = none
plutodebug = none
uniqueids = yes
hidetos = no

conn Tunnel37_1
ikev2 = no
type = tunnel
left = 10.10.50.67
right = 10.10.50.37
leftnexthop = 10.10.50.1
leftsubnet = 192.168.2.0/24
rightsubnet = 192.168.6.0/24
auto = start
keyexchange = ike
authby = secret
keyingtries = 0
esp = 3DES-SHA2_256
pfs = yes
rekey = yes
leftid = 10.10.50.67
rightid = 10.10.50.37
ike = 3DES-SHA2_256-MODP1024
ikelifetime = 28800s
keylife = 86400s
rekeymargin = 10m
rekeyfuzz = 20%
#

Logs:
# ipsec status
000 using kernel interface: netkey
000 interface lo/lo [::1]:500
000 interface lo/lo 127.0.0.1:4500
000 interface lo/lo 127.0.0.1:500
000 interface eth1/eth1 10.10.50.67:4500
000 interface eth1/eth1 10.10.50.67:500
000 interface eth0.1/eth0.1 192.168.5.67:4500
000 interface eth0.1/eth0.1 192.168.5.67:500
000 interface eth0.2/eth0.2 192.168.2.67:4500
000 interface eth0.2/eth0.2 192.168.2.67:500
000
000
000 fips mode=disabled;
000 SElinux=disabled
000 seccomp=unsupported
000
000 config setup options:
000
000 configdir=/etc/config, configfile=/etc/config/ipsec.conf,
secrets=/etc/config/ipsec.secrets, ipsecdir=/etc/config
000 nssdir=/etc/config, dumpdir=/var/run/pluto, statsbin=unset
000 sbindir=/bin, libexecdir=/bin
000 pluto_version=3.32, pluto_vendorid=OE-Libreswan-3.32, audit-log=yes
000 nhelpers=-1, uniqueids=yes, dnssec-enable=no, perpeerlog=no,
logappend=yes, logip=yes, shuntlifetime=900s, xfrmlifetime=30s
000 ddos-cookies-threshold=50000, ddos-max-halfopen=25000, ddos-mode=auto
000 ikeport=500, ikebuf=0, msg_errqueue=yes, strictcrlpolicy=no,
crlcheckinterval=0, listen=<any>, nflog-all=0
000 ocsp-enable=no, ocsp-strict=no, ocsp-timeout=2, ocsp-uri=<unset>
000 ocsp-trust-name=<unset>
000 ocsp-cache-size=1000, ocsp-cache-min-age=3600,
ocsp-cache-max-age=86400, ocsp-method=get
000 global-redirect=no, global-redirect-to=<unset>
000 secctx-attr-type=<unsupported>
000 debug:
000
000 nat-traversal=yes, keep-alive=20, nat-ikeport=4500
000 virtual-private (%priv):
000
000 Kernel algorithms supported:
000
000 algorithm ESP encrypt: name=3DES_CBC, keysizemin=192, keysizemax=192
000 algorithm ESP encrypt: name=AES_CBC, keysizemin=128, keysizemax=256
000 algorithm ESP encrypt: name=AES_CCM_12, keysizemin=128, keysizemax=256
000 algorithm ESP encrypt: name=AES_CCM_16, keysizemin=128, keysizemax=256
000 algorithm ESP encrypt: name=AES_CCM_8, keysizemin=128, keysizemax=256
000 algorithm ESP encrypt: name=AES_CTR, keysizemin=128, keysizemax=256
000 algorithm ESP encrypt: name=AES_GCM_12, keysizemin=128, keysizemax=256
000 algorithm ESP encrypt: name=AES_GCM_16, keysizemin=128, keysizemax=256
000 algorithm ESP encrypt: name=AES_GCM_8, keysizemin=128, keysizemax=256
000 algorithm ESP encrypt: name=CAMELLIA_CBC, keysizemin=128, keysizemax=256
000 algorithm ESP encrypt: name=CHACHA20_POLY1305, keysizemin=256,
keysizemax=256
000 algorithm ESP encrypt: name=NULL, keysizemin=0, keysizemax=0
000 algorithm ESP encrypt: name=NULL_AUTH_AES_GMAC, keysizemin=128,
keysizemax=256
000 algorithm ESP encrypt: name=SERPENT_CBC, keysizemin=128, keysizemax=256
000 algorithm ESP encrypt: name=TWOFISH_CBC, keysizemin=128, keysizemax=256
000 algorithm AH/ESP auth: name=AES_CMAC_96, key-length=128
000 algorithm AH/ESP auth: name=AES_XCBC_96, key-length=128
000 algorithm AH/ESP auth: name=HMAC_MD5_96, key-length=128
000 algorithm AH/ESP auth: name=HMAC_SHA1_96, key-length=160
000 algorithm AH/ESP auth: name=HMAC_SHA2_256_128, key-length=256
000 algorithm AH/ESP auth: name=HMAC_SHA2_256_TRUNCBUG, key-length=256
000 algorithm AH/ESP auth: name=HMAC_SHA2_384_192, key-length=384
000 algorithm AH/ESP auth: name=HMAC_SHA2_512_256, key-length=512
000 algorithm AH/ESP auth: name=NONE, key-length=0
000
000 IKE algorithms supported:
000
000 algorithm IKE encrypt: v1id=5, v1name=OAKLEY_3DES_CBC, v2id=3,
v2name=3DES, blocksize=8, keydeflen=192
000 algorithm IKE encrypt: v1id=8, v1name=OAKLEY_CAMELLIA_CBC, v2id=23,
v2name=CAMELLIA_CBC, blocksize=16, keydeflen=128
000 algorithm IKE encrypt: v1id=-1, v1name=n/a, v2id=20, v2name=AES_GCM_C,
blocksize=16, keydeflen=128
000 algorithm IKE encrypt: v1id=-1, v1name=n/a, v2id=19, v2name=AES_GCM_B,
blocksize=16, keydeflen=128
000 algorithm IKE encrypt: v1id=-1, v1name=n/a, v2id=18, v2name=AES_GCM_A,
blocksize=16, keydeflen=128
000 algorithm IKE encrypt: v1id=13, v1name=OAKLEY_AES_CTR, v2id=13,
v2name=AES_CTR, blocksize=16, keydeflen=128
000 algorithm IKE encrypt: v1id=7, v1name=OAKLEY_AES_CBC, v2id=12,
v2name=AES_CBC, blocksize=16, keydeflen=128
000 algorithm IKE encrypt: v1id=65004, v1name=OAKLEY_SERPENT_CBC,
v2id=65004, v2name=SERPENT_CBC, blocksize=16, keydeflen=128
000 algorithm IKE encrypt: v1id=65005, v1name=OAKLEY_TWOFISH_CBC,
v2id=65005, v2name=TWOFISH_CBC, blocksize=16, keydeflen=128
000 algorithm IKE encrypt: v1id=65289, v1name=OAKLEY_TWOFISH_CBC_SSH,
v2id=65289, v2name=TWOFISH_CBC_SSH, blocksize=16, keydeflen=128
000 algorithm IKE encrypt: v1id=-1, v1name=n/a, v2id=28,
v2name=CHACHA20_POLY1305, blocksize=16, keydeflen=256
000 algorithm IKE PRF: name=HMAC_MD5, hashlen=16
000 algorithm IKE PRF: name=HMAC_SHA1, hashlen=20
000 algorithm IKE PRF: name=HMAC_SHA2_256, hashlen=32
000 algorithm IKE PRF: name=HMAC_SHA2_384, hashlen=48
000 algorithm IKE PRF: name=HMAC_SHA2_512, hashlen=64
000 algorithm IKE PRF: name=AES_XCBC, hashlen=16
000 algorithm IKE DH Key Exchange: name=MODP1024, bits=1024
000 algorithm IKE DH Key Exchange: name=MODP1536, bits=1536
000 algorithm IKE DH Key Exchange: name=MODP2048, bits=2048
000 algorithm IKE DH Key Exchange: name=MODP3072, bits=3072
000 algorithm IKE DH Key Exchange: name=MODP4096, bits=4096
000 algorithm IKE DH Key Exchange: name=MODP6144, bits=6144
000 algorithm IKE DH Key Exchange: name=MODP8192, bits=8192
000 algorithm IKE DH Key Exchange: name=DH19, bits=512
000 algorithm IKE DH Key Exchange: name=DH20, bits=768
000 algorithm IKE DH Key Exchange: name=DH21, bits=1056
000 algorithm IKE DH Key Exchange: name=DH31, bits=256
000
000 stats db_ops: {curr_cnt, total_cnt, maxsz} :context={0,2,36}
trans={0,2,1620} attrs={0,2,2160}
000
000 Connection list:
000
000 "Tunnel37_1": 192.168.2.0/24===10.10.50.67
<10.10.50.67>---10.10.50.1...10.10.50.37<10.10.50.37>===192.168.6.0/24;
unrouted; eroute owner: #0
000 "Tunnel37_1":     oriented; my_ip=unset; their_ip=unset;
my_updown=ipsec _updown;
000 "Tunnel37_1":   xauth us:none, xauth them:none,  my_username=[any];
their_username=[any]
000 "Tunnel37_1":   our auth:secret, their auth:secret
000 "Tunnel37_1":   modecfg info: us:none, them:none, modecfg policy:push,
dns:unset, domains:unset, banner:unset, cat:unset;
000 "Tunnel37_1":   policy_label:unset;
000 "Tunnel37_1":   ike_life: 28800s; ipsec_life: 86400s; replay_window:
32; rekey_margin: 600s; rekey_fuzz: 20%; keyingtries: 0;
000 "Tunnel37_1":   retransmit-interval: 500ms; retransmit-timeout: 60s;
000 "Tunnel37_1":   initial-contact:no; cisco-unity:no; fake-strongswan:no;
send-vendorid:no; send-no-esp-tfc:no;
000 "Tunnel37_1":   policy:
PSK+ENCRYPT+TUNNEL+PFS+UP+IKEV1_ALLOW+SAREF_TRACK+IKE_FRAG_ALLOW+ESN_NO;
000 "Tunnel37_1":   conn_prio: 24,24; interface: eth1; metric: 0; mtu:
unset; sa_prio:auto; sa_tfc:none;
000 "Tunnel37_1":   nflog-group: unset; mark: unset; vti-iface:unset;
vti-routing:no; vti-shared:no; nic-offload:auto;
000 "Tunnel37_1":   our idtype: ID_IPV4_ADDR; our id=10.10.50.67; their
idtype: ID_IPV4_ADDR; their id=10.10.50.37
000 "Tunnel37_1":   dpd: action:restart; delay:10; timeout:120; nat-t:
encaps:auto; nat_keepalive:yes; ikev1_natt:both
000 "Tunnel37_1":   newest ISAKMP SA: #3; newest IPsec SA: #0;
000 "Tunnel37_1":   IKE algorithms: 3DES_CBC-HMAC_SHA2_256-MODP1024
000 "Tunnel37_1":   IKEv1 algorithm newest:
3DES_CBC_192-HMAC_SHA2_256-MODP1024
000 "Tunnel37_1":   ESP algorithms: 3DES_CBC-HMAC_SHA2_256_128
000
000 Total IPsec connections: loaded 1, active 0
000
000 State Information: DDoS cookies not required, Accepting new IKE
connections
000 IKE SAs: total(2), half-open(0), open(0), authenticated(2), anonymous(0)
000 IPsec SAs: total(2), authenticated(2), anonymous(0)
000
000 #1: "Tunnel37_1":500 STATE_MAIN_I4 (ISAKMP SA established);
EVENT_SA_REPLACE in 28057s; lastdpd=-1s(seq in:0 out:0); idle;
000 #2: "Tunnel37_1":500 STATE_QUICK_I1 (sent QI1, expecting QR1);
EVENT_RETRANSMIT in 21s; lastdpd=-1s(seq in:0 out:0); idle;
000 #3: "Tunnel37_1":500 STATE_MAIN_R3 (sent MR3, ISAKMP SA established);
EVENT_SA_REPLACE in 28457s; newest ISAKMP; lastdpd=-1s(seq in:0 out:0);
idle;
000 #4: "Tunnel37_1":500 STATE_QUICK_R0 (expecting QI1);
EVENT_CRYPTO_TIMEOUT in 17s; lastdpd=-1s(seq in:0 out:0); idle;
000
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