[strongSwan-dev] How to enable chacha20poly1305 support in Android app ?

[John WW]

the left peer running on Linux localhost 4.1.5-x86_64

On Thu, Nov 19, 2015 at 10:47 AM, John WW <wrxzzj at gmail.com> 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.. at .^.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 <tobias at strongswan.org> 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



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