<ul><li><a href=https://www.indiacode.nic.in/bitstream/123456789/13116/1/it_act_2000_updated.pdf target=_blank>Information Technology Act 2000(Information Technology Act, No 21 of 2000, 9 June 2000, Section 3 and 5)</a></li><li><a href=http://www.meity.gov.in/writereaddata/files/it_amendment_act2008%20%281%29_0.pdf target=_blank>The Information Technology (Amendment) Act, 2008(The Information Technology (Amendment) Act, No. 10 of 2009, 5 February 2009)</a></li><li><a href=http://cca.gov.in/eSign.html target=_blank>eSign - Online Digital Signature Service(Govt. of India, Ministry of Electronics and Information Technology, Controller of Certifying Authorities)</a></li></ul>