You can open the website eaadhaar.uidai.gov.in. After entering in e-Aadhaar website you can see the Validate Option. Friends first Right click on the ‘validity unknown’ icon and click on ‘Validate Signature’ option. You will get the signature validation status window, click on ‘Signature Properties’. Click on ‘Show Certificate.’ Verify that there is a certification path named ‘CCA India 2011’. This identifies CCA India as the owner of the digital certificate that has been used when signing the document. Mark the certification path named ‘CCA India 2011’, click the ‘Trust’ tab and then ‘Add to Trusted Identities’. Answer ‘OK’ to any security question that follows. Check(√) the field for ‘Use this certificate as a trusted root’ and click ‘OK’ twice to close this and the next window. Click ‘Validate Signature’ to execute the validation.