I am new to Android . I installed Eclipse Kepler version.
I followed this link.
https://sites.google.com/site/barsham/list-of-topics-1/programming/eclipse-android-windows-64
After doing the following step :
6.1. Start Eclipse, then select Help > Install New Software....
6.2 Click Add, in the top-right corner.
6.3 In the Add Repository dialog that appears, enter "ADT Plugin" for the Name and the following URL for the Location:
https://dl-ssl.google.com/android/eclipse/
I tried both https and http url.
But the same error box popup which contain the warning related to unsigned content and authenticity.
Please help.
The warning is about security, it is good for you to always care about security warnings and understand them.
As I see it, many developers do not care on creating the signature (or may be it is too troubling?), anyway, for open-source plugins I think it is ok to ignore the warning, as long it is a popular (or at least old enough) plugin. In a sense that, other users may have already poked around the code or reported about security problems related to it.
More about it here.