PKI Tutorials - Herong's Tutorial Examples - v2.32, by Herong Yang
"Your connection is not private" with Chrome on Android Phone
This section provides a tutorial example on how to resolve the 'Your connection is not private' error with Chrome on Android phone.
In the last tutorial, we learned that Chrome will display lock icon, if the HTTPS Website has a valid certificate. Here is what will happen if the Website has an invalid certificate.
1. Run Chrome on your Android phone and enter the address of a Website that has an invalid certificate. An error message is displayed.
Your connection is not private Attackers might be trying to steal your information from some.domain.com (for example, passwords, messages, or credit cards). NET::ERR_CERT_DATE_INVALID
2. Tap on "Advanced". Detailed messaged of the certificate error is displayed. For example, if the certificate has expired, the message will say "its security certificate expired 60 days ago".
3. Tap on "Back to safety" to stop visiting the Website, if this is your financial Website.
4. Tap on "Proceed to some.domain.com" to ignore the error, if you are just surfing this Website.
Note that an invalid certificate could be the result of a man-in-the-middle attach, where a hacker secretly intercepts the communication between you and the Website. The hacker also replaces the original server certificate with his/her fake certificate.
Table of Contents
Introduction of PKI (Public Key Infrastructure)
Introduction of HTTPS (Hypertext Transfer Protocol Secure)
Using HTTPS with Google Chrome
Using HTTPS with Mozilla Firefox
HTTPS with IE (Internet Explorer)
►Android and Server Certificate
Visiting "https" Website with Chrome on Android Phone
►"Your connection is not private" with Chrome on Android Phone
Viewing Server Certificate with Chrome on Android Phone
Viewing Server Certificate Path with Chrome on Android Phone
Trusted Certificate Store on Android phone
Downloading Trusted Root Certificate on Android phone
Installing Trusted Root Certificate on Android phone
Installing Website Server Certificate on Android Phone
Windows Certificate Stores and Console
RDP (Remote Desktop Protocol) and Server Certificate
macOS Certificate Stores and Keychain Access
Perl Scripts Communicating with HTTPS Servers
PHP Scripts Communicating with HTTPS Servers
Java Programs Communicating with HTTPS Servers
.NET Programs Communicating with HTTPS Servers
CAcert.org - Root CA Offering Free Certificates
PKI CA Administration - Issuing Certificates
Comodo Free Personal Certificate
Digital Signature - Microsoft Word
Digital Signature - OpenOffice.org 3