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"4096-bit MODP Group" from RFC3526, Section 5. 

The prime is: 2^4096 - 2^4032 - 1 + 2^64 * { [2^3966 pi] + 240904 }

RFC3526 specifies a generator of 2.

The generation of the group is described in RFC 2412.

Fixes: #7644
This commit is contained in:
Fedor Brunner 2014-02-17 14:54:20 +01:00
parent 80cc75f575
commit 3b629a52d2
2 changed files with 18 additions and 19 deletions
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33
data/other/dh4096.pem
View File

@ -1,18 +1,21 @@
-----BEGIN DH PARAMETERS----- -----BEGIN DH PARAMETERS-----
MIICCAKCAgEA+hRyUsFN4VpJ1O8JLcCo/VWr19k3BCgJ4uk+d+KhehjdRqNDNyOQ MIICCAKCAgEA///////////JD9qiIWjCNMTGYouA3BzRKQJOCIpnzHQCC76mOxOb
l/MOyQNQfWXPeGKmOmIig6Ev/nm6Nf9Z2B1h3R4hExf+zTiHnvVPeRBhjdQi81rt IlFKCHmONATd75UZs806QxswKwpt8l8UN0/hNW1tUcJF5IW1dmJefsb0TELppjft
Xeoh6TNrSBIKIHfUJWBh3va0TxxjQIs6IZOLeVNRLMqzeylWqMf49HsIXqbcokUS awv/XLb0Brft7jhr+1qJn6WunyQRfEsf5kkoZlHs5Fs9wgB8uKFjvwWY2kg2HFXT
Vt1BkvLdW48j8PPv5DsKRN3tloTxqDJGo9tKvj1Fuk74A+Xda1kNhB7KFlqMyN98 mmkWP6j9JM9fg2VdI9yjrZYcYvNWIIVSu57VKQdwlpZtZww1Tkq8mATxdGwIyhgh
VETEJ6c7KpfOo30mnK30wqw3S8OtaIR/maYX72tGOno2ehFDkq3pnPtEbD2CScxc fDKQXkYuNs474553LBgOhgObJ4Oi7Aeij7XFXfBvTFLJ3ivL9pVYFxg5lUl86pVq
alJC+EL7RPk5c/tgeTvCngvc1KZn92Y//EI7G9tPZtylj2b56sHtMftIoYJ9+ODM 5RXSJhiY+gUQFXKOWoqqxC2tMxcNBFB6M6hVIavfHLpk7PuFBFjb7wqK6nFXXQYM
sccD5Piz/rejE3Ome8EOOceUSCYAhXn8b3qvxVI1ddd1pED6FHRhFvLrZxFvBEM9 fbOXD4Wm4eTHq/WujNsJM9cejJTgSiVhnc7j0iYa0u5r8S/6BtmKCGTYdgJzPshq
ERRMp5QqOaHJkM+Dxv8Cj6MqrCbfC4u+ZErxodzuusgDgvZiLF22uxMZbobFWyte ZFIfKxgXeyAMu+EXV3phXWx3CYjAutlG4gjiT6B05asxQ9tb/OD9EI5LgtEgqSEI
OvOzKGtwcTqO/1wV5gKkzu1ZVswVUQd5Gg8lJicwqRWyyNRczDDoG9jVDxmogKTH ARpyPBKnh+bXiHGaEL26WyaZwycYavTiPBqUaDS2FQvaJYPpyirUTOjbu8LbBN6O
AaqLulO7R8Ifa1SwF2DteSGVtgWEN8gDpN3RBmmPTDngyF2DHb5qmpnznwtFKdTL +S6O/BQfvsqmKHxZR05rwF2ZspZPoJDDoiM7oYZRW+ftH2EpcM7i16+4G912IXBI
KWbuHn491xNO25CQWMtem80uKw+pTnisBRF/454n1Jnhub144YRBoN8CAQI= HNAGkSfVsFqpk7TqmI2P3cGG/7fckKbAj030Nck0BjGZ//////////8CAQI=
-----END DH PARAMETERS----- -----END DH PARAMETERS-----
These are the 4096 bit DH parameters from "Assigned Number for SKIP Protocols" "4096-bit MODP Group" from RFC3526, Section 5.
(http://www.skip-vpn.org/spec/numbers.html).
See there for how they were generated. The prime is: 2^4096 - 2^4032 - 1 + 2^64 * { [2^3966 pi] + 240904 }
Note that g is not a generator, but this is not a problem since p is a safe prime.
RFC3526 specifies a generator of 2.
The generation of the group is described in RFC 2412.

4
src/common/jingle_xtls.py
View File

@ -120,10 +120,6 @@ def get_context(fingerprint, verify_cb=None, remote_jid=None):
with open(dh_params_name, "r") as dh_params_file: with open(dh_params_name, "r") as dh_params_file:
ctx.load_tmp_dh(str(dh_params_name).encode('utf-8')) ctx.load_tmp_dh(str(dh_params_name).encode('utf-8'))
except IOError as err: except IOError as err:
log.warn('Unable to load DH parameter file: %s. You should generate it '
'by using this command : "openssl dhparam 4096 -out '
'~/.config/gajim/dh_params.pem". This command take about 15 '
'minutes to complete.' % dh_params_name)
default_dh_params_name = os.path.join(common.gajim.DATA_DIR, default_dh_params_name = os.path.join(common.gajim.DATA_DIR,
'other', DEFAULT_DH_PARAMS) 'other', DEFAULT_DH_PARAMS)
try: try: