Hi John,

you need at least a Linux 4.2 kernel for chacha20poly1305 ESP
to be supported.

Best regards

Andreas

On 19.11.2015 03:54, John WW wrote:
the left peer running on Linux localhost 4.1.5-x86_64

On Thu, Nov 19, 2015 at 10:47 AM, John WW <[email protected]> wrote:
Hi Tobias

    Thanks for you reply.
    I have pull source from android-chapoly branch, and build it
successfully, But it's failed when I try to establish connection.
I have a Question, To enable chacha20 support,  have any system
requirement on left peer ?

below is my strongswan log

02[KNL]  224: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
02[KNL]  240: 00 00 00 00 01 00 00 00 02 00 01 20 20 00 00 00  ...........  ...
02[KNL]  256: 00 00 00 00 70 00 12 00 72 66 63 37 35 33 39 65  ....p...rfc7539e
02[KNL]  272: 73 70 28 63 68 61 63 68 61 32 30 2C 70 6F 6C 79  sp(chacha20,poly
02[KNL]  288: 31 33 30 35 29 00 00 00 00 00 00 00 00 00 00 00  1305)...........
02[KNL]  304: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
02[KNL]  320: 00 00 00 00 00 00 00 00 20 01 00 00 80 00 00 00  ........ .......
02[KNL]  336: 45 92 EA 40 EB 5E 05 46 6E 09 AF 24 AD 3E 46 5B  E..@.^.Fn..$.>F[
02[KNL]  352: F0 7C DF 87 EC 9A BC A5 20 BF 1F 9D E2 FC 76 15  .|...... .....v.
02[KNL]  368: 4F 78 8D 5F 1C 00 04 00 02 00 11 94 B0 CE 00 00  Ox._............
02[KNL]  384: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
02[KNL] received netlink error: Function not implemented (38)
02[KNL] unable to add SAD entry with SPI 0a3c776e
02[IKE] unable to install inbound and outbound IPsec SA (SAD) in kernel
02[ENC] added payload of type NOTIFY to message
02[IKE] failed to establish CHILD_SA, keeping IKE_SA
02[KNL] deleting SAD entry with SPI c73657b2  (mark 0/0x00000000)


conn android
   keyexchange=ikev2
   left=%defaultroute
   leftauth=pubkey
   leftsubnet=0.0.0.0/0
   leftfirewall=yes
   leftcert=server.cert.pem
   leftid="C=CN, O=strongxyz, CN=x.x.x.x"
   right=%any
   rightid="C=CN, O=strongxyz, CN=android"
   rightsourceip=10.7.0.0/24
   rightcert=android.client.cert.pem
   
ike=aes256ccm128-sha256-modp2048,aes256gcm128-sha256-modp2048,aes256gcm96-sha384-modp2048,aes256ccm96-sha384-modp2048,aes256-sha256-modp2048,aes128-sha256-modp2048,aes128-sha1-modp2048!
   
esp=chacha20poly1305,aes128gcm128,aes256gcm128,aes256ccm128-sha256-modp2048,aes256ccm128-sha256-modp2048,aes256gcm128-sha256-modp2048,aes256gcm96-sha384-modp2048,aes256ccm96-sha512-modp2048,aes256-sha256,aes128-sha1-modp2048!
   mobike=yes
   compress=yes
   auto=add

If I remove 'chacha20poly1305' in esp, all is right

On Wed, Nov 18, 2015 at 7:00 PM, Tobias Brunner <[email protected]> wrote:
Hi John,

    How can I enable chacha20 in Android app ?
is't possible update Android.mk to add chacha20 plugin for support it ?

Please have a look at the patches in the android-chapoly branch [1].

Regards,
Tobias

[1]
https://git.strongswan.org/?p=strongswan.git;a=shortlog;h=refs/heads/android-chapoly




--
Thanks

======================================================================
Andreas Steffen                         [email protected]
strongSwan - the Open Source VPN Solution!          www.strongswan.org
Institute for Internet Technologies and Applications
University of Applied Sciences Rapperswil
CH-8640 Rapperswil (Switzerland)
===========================================================[ITA-HSR]==

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