Published on June 11, 2010
Digital Signaturepresentation created by— : Digital Signaturepresentation created by— Dev Saighal DIGITAL SIGNATURE : DIGITAL SIGNATURE WHY DO WE NEED DIGITAL SIGNATURE? : WHY DO WE NEED DIGITAL SIGNATURE? Authentification Integrity Non-repudiation Low cost Eliminates the use of paper Faster procedures Completely secure What is a DIGITAL SIGNATURE CERTIFICATE? : What is a DIGITAL SIGNATURE CERTIFICATE? Digital Signature Certificates (DSC) are the electronic equivalent of physical or paper certificates. Eg. of physical certificates are drivers' licenses, passports or membership cards. Certificates serve as proof of identity, for eg. a driver's license identifies someone who can legally drive in a particular country. Likewise, a digital certificate can be presented electronically to prove your identity. HOW TO OBTAIN DIGITAL SIGNATURE CERTIFICATES? : HOW TO OBTAIN DIGITAL SIGNATURE CERTIFICATES? 1. Visit the website www.cca.gov.in http://www.asianlaws.org/library/infosec/obtaining-digital-signature-certificate.pdf 2.DOWNLOAD A ROOT CERTIFICATE : 2.DOWNLOAD A ROOT CERTIFICATE 3. SELECT A CERTIFYING AUTORITY : 3. SELECT A CERTIFYING AUTORITY widely known and trusted well defined Identification process before issuing the certificate Provides online access to all the certificates issued Provides online access to the list of certificates revoked. Displays online the license issued by the Controller Displays online approved Certification Practice Statement (CPS) Must adhere to IT Act/Rules/Regulations and Guidelines www.safescrypt.com www.nic.in www.idrbtca.org.in www.tcs-ca.tcs.co.in www.mtnltrustline.com www.ncodesolutions.com www.e-Mudhra.com 4. VISIT THE WEBSITE OF THE CERTIFYING AUTHORITY : 4. VISIT THE WEBSITE OF THE CERTIFYING AUTHORITY 5. SELECT THE CLASS OF CERTIFICATE REQUIRED. : 5. SELECT THE CLASS OF CERTIFICATE REQUIRED. CLASS 1 CLASS 2 CLASS 3 Slide 10: 6. SUBMIT AN ONLINE REQUEST. CLASS 1 : CLASS 1 Issued to individuals Digitally sign Email Encrypt email Authenticate to Web Servers Does not hold any legal validity CLASS 2 : CLASS 2 Issued to individuals for personal or business purposes. Identity of a person is verified against a trusted, pre-verified database. Class-2 Certificates issued under the TCS-CA Trust Network are legally valid under the Indian IT Act 2000. CLASS 3 : CLASS 3 Issued to individuals, companies and government organizations for both personal and commercial purposes Electronic Banking, Electronic data interchange (EDI), Membership based on-line services Stronger assurances of an applicant’s identity since presence is required before an RA Class-3 Certificates issued by the TCS-CA are legally valid under the Indian IT Act 2000. How Digital Signatures Work : How Digital Signatures Work Bob (Bob's public key) http://www.youdzone.com/signature.html Slide 16: Pat Doug Susan Bob’s Public Key Slide 17: HNFmsEm6Un BejhhyCGKOK JUxhiygSBCEiC 0QYIh/Hn3xgiK BcyLK1UcYiY lxx2lCFHDC/A "Hey Bob, how about lunch at Taco Bell. I hear they have free refills!" Slide 21: Pat Encryption : Encryption Caesar Cipher The shift is linear and equidistributed 3 changes I agree lcdjuhh Key Cipher The shift is linear (cyclic) 269 k.n.gupta 62 mewam3rzjba i+3=l Space=c [+3] k+2=m (dot)=e [+6] n=w [+9] Bibliography : Bibliography Google Wikipedia www.cca.gov.in www.youdzone.com THANK YOU !!! : THANK YOU !!!