Using the ./bin/tls-toolkit.sh standalone command, I generate a three files which are : 

```
CN=sys_admin_OU=NIFI.p12 
nifi-cert.pem
CN=sys_admin_OU=NIFI.password 

```

I am following this tutorial : 

```
 https://community.hortonworks.com/content/kbentry/170966/setting-up-a-secure-apache-nifi-registry.html

```

I am blocked in the password entry part in the p12 file.

He uses a Mac so he can use the GUI, on ubuntu I do not know what I have to use exactly. Finally he accesses the keychain access to identify himself. 

I do not know how to access the keychain access in my case.

Can you help me please