Bug #3064
curve448 does not appear to be recognized as valid in ike or esp config
Description
On FreeBSD 12 with strongSwan 5.8.0.d2, I can use curve25519 with IKEv1 and IKEv2 when the curve25519 plugin is loaded, but curve448 does not work with either IKEv1 or IKEv2.
In ipsec.conf, I specified it like this:
ike = aes256-sha1-curve448!
esp = aes256-sha256-curve448!
That syntax works if I use curve25519 instead, but when attempting to use curve448, strongSwan acts as though no DH was selected:
configured proposals: ESP:AES_CBC_256/HMAC_SHA1_96/NO_EXT_SEQ
I also don't see curve448 listed in https://github.com/strongswan/strongswan/blob/master/src/libstrongswan/crypto/proposal/proposal_keywords_static.txt along with the others, though it is listed on https://wiki.strongswan.org/projects/strongswan/wiki/IKEv2CipherSuites which says it should be a valid keyword for ike or esp.
It's also missing from https://wiki.strongswan.org/projects/strongswan/wiki/IKEv1CipherSuites but that may be intentional, though curve25519 is listed there as well.
Related issues
Associated revisions
History
#1 Updated by Tobias Brunner 3 months ago
- Status changed from New to Feedback
- Assignee set to Tobias Brunner
- Target version set to 5.8.1
- Resolution set to Fixed
Thanks for the report. Fix is in the 3064-curve448-keyword branch.
It's also missing from https://wiki.strongswan.org/projects/strongswan/wiki/IKEv1CipherSuites but that may be intentional, though curve25519 is listed there as well.
Yeah, didn't update that page in a while (using either of these algorithms with IKEv1 is not standardized anyway).
#2 Updated by Tobias Brunner 3 months ago
- Related to Issue #3065: Error building 5.8.0rc1 without gperf added
#3 Updated by Jim Pingle 3 months ago
It works as expected with the change from that branch, thanks!
Log entries:
charon[31462]: 15[CFG] <2> received proposals: IKE:AES_CBC_256/HMAC_SHA1_96/PRF_HMAC_SHA1/CURVE_448 charon[31462]: 15[CFG] <2> configured proposals: IKE:AES_CBC_256/HMAC_SHA1_96/PRF_HMAC_SHA1/CURVE_448 charon[31462]: 15[CFG] <2> selected proposal: IKE:AES_CBC_256/HMAC_SHA1_96/PRF_HMAC_SHA1/CURVE_448
ipsec statusall output:
con5000[2]: IKE proposal: AES_CBC_256/HMAC_SHA1_96/PRF_HMAC_SHA1/CURVE_448
#4 Updated by Tobias Brunner 3 months ago
- Status changed from Feedback to Closed
- Target version changed from 5.8.1 to 5.8.0
proposal: Add missing curve448/x448 keywords
Fixes #3064.