Ceux qui utilisent YChat (XChat 2) sous Windows auront certainement remarqué que par défaut, la connexion SSL au serveur est impossible à moins d'accepter les certificats auto-signés. Pourtant, le certificat du serveur irc.hackerzvoice.net n'est PAS autosigné, mais bel est bien signé par une CA root. La faute revient à YChat, qui ne connaît justement pas cette CA...
Étant donné que se connecter à un serveur en SSL en désactivant le check de certificat ne sert strictement à rien (un MITM SSL classique permettant d'espionner toute la conversation), j'ai trouvé intéressant de me documenter sur la chose, et de trouver un moyen de se connecter au serveur avec YChat SANS désactiver la vérification. J'ai trouvé la réponse ici :
http://forum.xchat.org/viewtopic.php?f=2&t=5529Pour ceux que ça intéresse, voila un résumé :
- Sur votre machine, créez l'arborescence suivante : C:\some\openssl\dir\ssl\
Pourquoi précisément cette structure de dossiers ? Demandez au développeurs de YChat, qui codent avec leur pieds...
- Dans ce dernier dossier, créez un fichier cert.pem et copiez-y ce contenu :
Code:
-----BEGIN CERTIFICATE-----
MIIEZjCCA06gAwIBAgIQJqCmcmZAqI5dce+qu39ouTANBgkqhkiG9w0BAQUFADBB
MQswCQYDVQQGEwJGUjESMBAGA1UEChMJR0FOREkgU0FTMR4wHAYDVQQDExVHYW5k
aSBTdGFuZGFyZCBTU0wgQ0EwHhcNMTAxMjEwMDAwMDAwWhcNMTExMjEwMjM1OTU5
WjBfMSEwHwYDVQQLExhEb21haW4gQ29udHJvbCBWYWxpZGF0ZWQxGzAZBgNVBAsT
EkdhbmRpIFN0YW5kYXJkIFNTTDEdMBsGA1UEAxMUaXJjLmhhY2tlcnp2b2ljZS5u
ZXQwgZ8wDQYJKoZIhvcNAQEBBQADgY0AMIGJAoGBALvV6U53LKxnSzjalLHpTQWX
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ps1LsWjz51AQMad5ITAdBgNVHQ4EFgQULYcDSx7lQwrguz/nMXgX/E0yZcswDgYD
VR0PAQH/BAQDAgWgMAwGA1UdEwEB/wQCMAAwHQYDVR0lBBYwFAYIKwYBBQUHAwEG
CCsGAQUFBwMCMFYGA1UdIARPME0wSwYLKwYBBAGyMQECAhowPDA6BggrBgEFBQcC
ARYuaHR0cDovL3d3dy5nYW5kaS5uZXQvY29udHJhY3RzL2ZyL3NzbC9jcHMvcGRm
LzA8BgNVHR8ENTAzMDGgL6AthitodHRwOi8vY3JsLmdhbmRpLm5ldC9HYW5kaVN0
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oUDiHqfm3dP1rrm+EORPq1tZMyKm990CHjI=
-----END CERTIFICATE-----
-----BEGIN CERTIFICATE-----
MIIEozCCA4ugAwIBAgIQWrYdrB5NogYUx1U9Pamy3DANBgkqhkiG9w0BAQUFADCB
lzELMAkGA1UEBhMCVVMxCzAJBgNVBAgTAlVUMRcwFQYDVQQHEw5TYWx0IExha2Ug
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8/ifBlIK3se2e4/hEfcEejX/arxbx1BJCHBvlEPNnsdw8dvQbdqP
-----END CERTIFICATE-----
-----BEGIN CERTIFICATE-----
MIIEhjCCA26gAwIBAgIQUkIGSk83/kNpSHqWZ/9dJzANBgkqhkiG9w0BAQUFADBv
MQswCQYDVQQGEwJTRTEUMBIGA1UEChMLQWRkVHJ1c3QgQUIxJjAkBgNVBAsTHUFk
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kLRLaIHQwvrgPw==
-----END CERTIFICATE-----
-----BEGIN CERTIFICATE-----
MIIEZjCCA06gAwIBAgIQUSYKkxzif5zDpV954HKugjANBgkqhkiG9w0BAQUFADCB
kzELMAkGA1UEBhMCVVMxCzAJBgNVBAgTAlVUMRcwFQYDVQQHEw5TYWx0IExha2Ug
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-----END CERTIFICATE-----
-----BEGIN CERTIFICATE-----
MIIEXjCCA0agAwIBAgIQRL4Mi1AAIbQR0ypoBqmtaTANBgkqhkiG9w0BAQUFADCB
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o4GrMIGoMAsGA1UdDwQEAwIBxjAPBgNVHRMBAf8EBTADAQH/MB0GA1UdDgQWBBRT
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BgEFBQcDAQYKKwYBBAGCNwoDAwYJYIZIAYb4QgQBMA0GCSqGSIb3DQEBBQUAA4IB
AQAnNZcAiosovcYzMB4p/OL31ZjUQLtgyr+rFywJNn9Q+kHcrpY6CiM+iVnJowft
Gzet/Hy+UUla3joKVAgWRcKZsYfNjGjgaQPpxE6YsjuMFrMOoAyYUJuTqXAJyCyj
j98C5OBxOvG0I3KgqgHf35g+FFCgMSa9KOlaMCZ1+XtgHI3zzVAmbQQnmt/VDUVH
KWss5nbZqSl9Mt3JNjy9rjXxEZ4du5A/EkdOjtd+D2JzHVImOBwYSf0wdJrE5SIv
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mfnGV/TJVTl4uix5yaaIK/QI
-----END CERTIFICATE-----
J'invite les sceptiques à vérifier que certificat est bien celui du serveur
- Dans YChat, à l'intérieur des propriétés du serveur irc.hackerzvoice.net, décochez la case "Accepter un certificat non valide".
- Connectez-vous au serveur ! Vous obtiendrez un affichage du style :
Code:
* Recherche de irc.hackerzvoice.net
* Connexion à irc.hackerzvoice.net (88.191.231.97) port 6697...
* * Certification info:
* Subject:
* OU=Domain Control Validated
* OU=Gandi Standard SSL
* CN=irc.hackerzvoice.net
* Issuer:
* C=FR
* O=GANDI SAS
* CN=Gandi Standard SSL CA
* Public key algorithm: rsaEncryption (1024 bits)
* Sign algorithm sha1WithRSAEncryption
* Valid since Dec 10 00:00:00 2010 GMT to Dec 10 23:59:59 2011 GMT
* * Cipher info:
* Version: TLSv1/SSLv3, cipher AES256-SHA (256 bits)
* Connecté. Identification en cours...
* *** Looking up your hostname...
Ce qui signifie que le certificat a bien été reconnu.
Enjoy !
