Server Decryption Key: e0 d4 d9 43 1b a2 1b e3 d8 76 77 49 56 f7 20 88įs/cifs/ioctl.c | 29 ĭiff -git a/fs/cifs/cifs_ioctl.h b/fs/cifs/cifs_ioctl.h index 6c3bd07868d7.0f0dc1c1fe41 100644 - a/fs/cifs/cifs_ioctl.h b/fs/cifs/cifs_ioctl.h -57,9 57,18 struct smb_query_info pkey_inf.cipher_type = le16_to_cpu(tcon->ses->server->cipher_type) pkey_inf.Suid = tcon->ses->Suid memcpy(pkey_inf.auth_key, tcon->ses->auth_key.response, 16 /* SMB2_NTLMV2_SESSKEY_SIZE */) memcpy(pkey_inf.smb3decryptionkey, tcon->ses->smb3decryptionkey, SMB3_SIGN_KEY_SIZE) memcpy(pkey_inf.A while back, I wrote up a walkthrough of a real TLS 1.2 handshake,ĭetailing what each byte contributed to the SSL connection establishment process. Server Encryption Key: 1a c3 be ba 3d fc dc 3c e bc 93 9e 50 9e 19 c1 Session Key: a5 6d 81 d0 e c1 ca e1 d8 13 aa 20 e8 f2 cc 71 Restrict this to root (CAP_SYS_ADMIN), and only for a mount (and better than showing all keys in a pseudofile). Need to be able to dump out the encryption/decryption keys.ĭumping them to an ioctl is safer than dumping then to dmesg, In order to debug certain problems it is important to be able Subject: smb3: allow decryption keys to be dumped by admin for > Restrict this to root (CAP_SYS_ADMIN), and only for a mount > that this admin has access to. > Dumping them to an ioctl is safer than dumping then to dmesg, > (and better than showing all keys in a pseudofile). wireshark) but to do this we > need to be able to dump out the encryption/decryption keys. > And updated patch for cifs-utils ("smbinfo keys ") > On Fri, at 2:07 AM Steve French wrote: > kernel patch updated to check if encryption is enabled > In order to debug certain problems it is important to be able > to decrypt network traces (e.g. в 00:20, Steve French via samba-technical SMB3.0 encryption is CCM, so, let's not confuse users and print "CCMĮncryption" for both cipher_type values of 0 and 1. cifs_dbg(VFS, "ioctl dumpkey\n") /* BB REMOVEME */ Thanks, this is very useful functionality! A couple comments below. X-Mailing-List: dump encryption keys to allow wireshark debugging of encrypted Subject: dump encryption keys to allow wireshark debugging ofĬontent-Type: multipart/mixed boundary="00000000000071b6230592f6b96e" X-Gm-Message-State: APjAAAUOYL cbYo0y Eoea//PObzyNd hhE G0MuWDg jj/oBFHQenxPĪPXvYqwaWnUYhLz/O5M7qwUTJfuDLy/m SCebXVVZJ5xZfcP7thnewkk9koxIOMwg0y yEGYUW gCWu8h pJUBiCcjY= XC/RSJgAt7Br7 TMUrCuUgOA/6J79s0wmrSC6upR13fllzfubS7E1AjwDDURGexne6OJ GQQOo/56BQGWHmELni6sHierAxwWWK4Xw zzneEJ9MFqMAuy5ryggXXLHbdeIyZ6ZtOg H=x-gm-message-state:mime-version:from:date:message-id:subject:to ī=gYcAm4Wd/mocqcrCHVnz/aMcBMCJCHtvpM5Vhkk4SGmhuUBgRa1tWQJsBJNnwKggZ0įOCk5QJSQoOPdn7v1SFMiOK8vBYeM6iIC07uTwU6DIkWZerkEo7A0bZnPoQSYwiSaberħ8hsJloNq1shEmDDjfrN62X89QvUpQZiEOOATVKaLfBR5ELmUQmreaxQXgu5q6o/wXaX X-Google-DKIM-Signature: v=1 a=rsa-sha256 c=relaxed/relaxed UxWtnS4NsngQBScXyxb9Uh1FE3VkQj5tWNmo 77kLu4nYi9qzmZImnjzt3Z3dcHkiCkOĪPt2sHZ5sHMJOztMzfmHsMVdREttI XQ9z4mKTYiOfkB3AAwAUpu Rv4NEJCET0kj6kNį VBB6nPUb2wo82sFx IiVoQhLSbO5K0ockxDARTciDkM3c4w06PuhvukgzdMiB 2GCc IYXLj/B8Cwv5GBRX6bE 1mdk6dPaOk3JE PZKe9X5G0bbNTpMevBI6SGjiZ0f6gcWzZ H=mime-version:from:date:message-id:subject:to īh=okJYcSdtFVyAVwO/GO4YqAqofHrbE1eBVlcWVEJegAw= ī=eMZqqOKv4wfevbxpa sdw3ZObLugRtncz6gfUX81PAIpc7WyON0lSLVCtNmy8o69/P Received: by with SMTP id a1so13874077ioc.6ĭKIM-Signature: v=1 a=rsa-sha256 c=relaxed/relaxed Received: from ( )īy (Postfix) with ESMTP id A5984206C2ĭkim=pass (2048-bit key) header.d= by via listexpand Received: from (īy (Postfix) with ESMTP id D53051745
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