I use the following script the generate certificate

openssl req -new -keyout out/$I.key -out out/$I.request -days 365 -nodes -subj 
"/C=US/ST=California/L=Irvine/O=example com/CN=${I}" -newkey rsa:2048

My complete script I use (you can refer but I can not support the script for 
your need)
https://github.com/dmilan77/scripts/blob/master/ssl/createSSLCert.sh


You can verify using nmap or oepnssl

openssl s_client -connect hostname:443 -tls1_2

nmap --script ssl-enum-ciphers -p 443 hostname



Regards,
Milan Das


On 5/23/18, 8:03 AM, "Brajendra Mishra" <brajendra_mis...@persistent.com> 
wrote:

    I am using openssl for creating SSL certificate but I am unable to figure 
out which option(s) is required to make TLS supported certificate.
    Could you please help me out on this. I am not aware much about these 
certificates and all?
    
    Brajendra Mishra
    Persistent Systems Ltd.
    
    -----Original Message-----
    From: Milan Das <m...@interset.com> 
    Sent: Wednesday, May 23, 2018 5:21 PM
    To: dev@nifi.apache.org; alopre...@apache.org
    Subject: Re: How to run NiFi on HTTPS
    
    Hi Bajendra,
    TLS vs SSL is all depends on how you generate the SSL certificates.
    If the SSL certificate is TLS 1.2 then JVM SSL protocol will use TLS.
    
    Regards,
    Milan
    Sr. Architect-- Interset Inc
    
    On 5/23/18, 7:40 AM, "Brajendra Mishra" <brajendra_mis...@persistent.com> 
wrote:
    
        Hi Andy,
        
        Thanks a lot for you valuable inputs. I could found the actual 
resolution after debugging the issue.
        Earlier I was using IBM java 8 instead of Oracle Java 8/open JDK 8, 
where SSLv3 Protocol is not enabled by default, hence I was facing this issue.
        
        Now I am able to see the NiFi UI securely but please let me know the 
way where I can run this nifi on TLS 1.0, 1.2 protocol instead of SSLv3 so I 
can use IBM Java 8 as well?
        
        Brajendra Mishra
        Persistent Systems Ltd.
        
        From: Andy LoPresto <alopre...@apache.org>
        Sent: Wednesday, May 23, 2018 4:16 AM
        To: dev@nifi.apache.org
        Subject: Re: How to run NiFi on HTTPS
        
        Apache NiFi does not support Basic Authentication in any scenario. 
There are multiple options for user authentication to the NiFi UI/API, 
including LDAP, Kerberos, client certificates, Apache Knox, and OpenID Connect. 
More details about configuring these options are available in the Admin Guide 
[1].
        
        As for your TLS error, my guess is that there is an error with the 
certificate you generated. The error “No overlapping cipher suites available” 
can occur when the certificate is expired or otherwise invalid, and all the 
available cipher suites require an RSA key for signing or encryption. To 
further debug this, you can use the OpenSSL s_client tool to attempt to make a 
connection via the command line, and enable the JSSE SSL debugging via a 
modification to bootstrap.conf. Once you restart, you should see additional 
TLS/SSL debug output in logs/nifi-bootstrap.conf.
        
        For us to be able to offer further advice, you’ll need to provide more 
information, like stacktraces from your logs, or the openssl output from 
examining the certificates. Images do not come through on the list, so please 
copy and paste text output instead. There are other possible explanations, such 
as OS-limited cipher suites available, older browser versions, etc. but these 
are much less common.
        
        Add this line to bootstrap.conf:
        
        java.arg.15=-Djavax.net.debug=ssl,handshake
        
        [1] 
https://nifi.apache.org/docs/nifi-docs/html/administration-guide.html#user_authentication
        
        
        Andy LoPresto
        alopre...@apache.org<mailto:alopre...@apache.org>
        alopresto.apa...@gmail.com<mailto:alopresto.apa...@gmail.com>
        PGP Fingerprint: 70EC B3E5 98A6 5A3F D3C4  BACE 3C6E F65B 2F7D EF69
        
        On May 22, 2018, at 5:53 AM, Brajendra Mishra 
<brajendra_mis...@persistent.com<mailto:brajendra_mis...@persistent.com>> wrote:
        
        Team I need to know the implementation of basic authentication with 
HTTPS as well.
        
        Brajendra Mishra
        Persistent Systems Ltd.
        
        From: Brajendra Mishra 
<brajendra_mis...@persistent.com<mailto:brajendra_mis...@persistent.com>>
        Sent: Tuesday, May 22, 2018 6:22 PM
        To: dev@nifi.apache.org<mailto:dev@nifi.apache.org>
        Subject: How to run NiFi on HTTPS
        
        Hi Team,
        
        I have used tlstoolkit to create required files (nifi.properties, 
keystore and truststore files) to run NiFi on HTTPS.
        I also configured successfully and ran the NiFi service correctly which 
show it is running on Https protocol.
        But once I tried to see its UI I am facing following error on all 
browsers (IE, Firefox and Chrome):
        
        "Secure Connection Failed - An error occurred during a connection to 
localhost:9090. Cannot communicate securely with peer: no common encryption 
algorithm(s). Error code: SSL_ERROR_NO_CYPHER_OVERLAP"
        
        [cid:image001.png@01D3F1F9.9EC1D450]
        
        Could you please let me know how can I see NiFi UI in this case? I have 
already tried all possible options (spread on internet) to get rid this issue 
on browsers but no luc
        
        
        Brajendra Mishra
        Persistent Systems Ltd.
        
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