DIGITAL

SIGNATURE

PRESENTED BY: ANKITA DAVE 1

INDEX

2

SR.NO. TOPIC SLIDE NO.1. WHAT IS DIGITAL SIGNATURES? 4

2. WHY DIGITAL SIGNATURES? 5

3. PAPER SIGNATURES VS DIGITAL SIGNATURES 6

4. PRIVATE KEY & PUBLIC KEY 7

5. PROTECTION OF PRIVATE KEY 8

6. WHAT IS DIGITAL SIGNATURE CERTIFICATE (DSC)? 9

7. CERTIFICATION AUTHORITY (CA) 10

8. HOW DOES DIGITAL SIGNATURES WORKS? 11

9. PROCEDURE TO OBTAIN DSC 12

INDEX

3

SR.NO. TOPIC SLIDE NO.10. STEP 1: DOWNLOADING ROOT CERTIFICATE 13

11. STEP 2: SELECTING A CERTIFYING AUTHORITY 18

12. STEP 3: VISIT THE WEBSITE OF THE CA 19

13. CLASS- 1 CERTIFICATES 20

14. CLASS- 2 CERTIFICATES 21

15. CLASS- 3 CERTIFICATES 22

16. STEP 4: SELECT THE TYPE OF CERTIFICATE NEEDED 23

17. STEP 5: SUBMIT AN ONLINE REQUEST 24

18. CONCLUSION 29

19. SOURCES OF INFORMATION 30

WHAT IS DIGITAL SIGNATURES?

As per Information Technology Act 2000, digital signature means authentication of any electronic record by means of an electronic.

Simply, signature in digital form OR Mark to authenticate a document.

4

WHY DIGITAL SIGNATURES?

Authentification. Integrity. Low cost. Eliminates the use of paper. Faster procedures. Completely secure.

5

PAPER SIGNATURES VS. DIGITAL SIGNATURESPARAMETER PAPER DIGITAL

Authenticity May be forged Can not be copied

Integrity Signature independent of the document

Signature depends on the contents of the document

Non-repudiation a. Handwriting expert needed

b. Error prone

a. Any computer user

b. Error free

6

PRIVATE KEY & PUBLIC KEYEach individual generates his own key pair.

PRIVATE KEY

Known only to owner

Used for making digital signature

7

PROTECTION OF PRIVATE KEY

The private key generated is to be protected & kept in secret because Can be misused by anyone who is having

access to your computer system. Is lost if computer system is formatted or

internet explorer is changed. The key is secured using

8

WHAT IS DIGITAL SIGNATURE CERTIFICATE (DSC)?

Is an electronic means of establishing records when doing transactions on the Internet.

Are easily transportable and cannot be imitated.Contains details like owner’s name & public key,

expiration date of public, serial number & name of the issuer (the Certification Authority) & his digital signature.

It is issued so that Recipient can verify that the certificate is authentic.

9

CERTIFICATION AUTHORITY (CA)

SR. NO. NAMES OF CA WEBSITES1. NIC nicca.nic.in

2. GNFC www.ncodesolutions.com

3. SAFESCRYPT www.safescrypt.com

4. TCS www.tcs-ca.tcs.co.in

5. MTNL TRUSTLINE www.mtnltrustline.com

6. IDRBT www.idrbtca.org.in

7. E-MUDHRA www.e-Mudhra.com

10

HOW DOES DIGITAL SIGNATURE WORKS?

11

PROCEDURE TO OBTAIN DSC

12

STEP 1: DOWNLOADING ROOT CERTIFICATE

Visit the website of the Controller of Certifying Authorities (CCA) at www.cca.gov.in.

13

14

15

16

17

STEP 2: SELECTING A CERTIFYING AUTHORITY

Visit the website of the CCA at www.cca.gov.in to obtain a list of licensed Certifying Authorities in India.

Based on information and study of the relevant websites, select a Certifying Authority.

Example: TCS official website is www.tcs-ca.tcs.co.in.

18

STEP 3: VISIT THE WEBSITE OF THE CA

A visit to the select CA website provides following three types of digital signature certificates:

CLASSES OF DSC: Class-1 certificates Class-2 certificates Class-3 certificates.

19

CLASS-1 CERTIFICATES These Certificates are personal e-mail

Certificates that allows you to secure your email messages. These certificates can be used to:

1. Digitally sign email. 2. Encrypt email. 3. Authenticate to Web Servers. These certificates, however, do not facilitate

strong authentication of the identity of the subscriber and hence, cannot be relied upon where proof of identity is required (commercial use).

20

CLASS-2 CERTIFICATE These Certificates are issued as Managed Digital

Certificates to employees/ partners/ affiliates/ customers of business and government organizations that are ready to assume the responsibility of verifying the accuracy of the information submitted by their employees/ partners/ affiliates/ customers.

These certificates issued under the TCS-CA Trust Network are legally valid under the Indian IT Act 2000.

21

CLASS-3 CERTIFICATES These Certificates are issued to individuals,

companies and government organizations. They can be used both for personal and

commercial purposes. They are typically used for electronic commerce

applications where security is a major concern. These Certificates issued by the TCS-CA are

legally valid under Indian IT Act 2000.

22

STEP 4: SELECT THE TYPE OF CERTIFICATE NEEDED

We need a legally valid digital signature certificate for an individual. The relevant certificate is a class-3 certificate.

23

STEP 5: SUBMIT AN ONLINE REQUEST

The next step is to create a user account on the TCS CA website, complete an online enrollment form and generate a cryptographic key pair on our computer.

24

25

26

27

28

CONCLUSION

Hence, we can conclude that digital signatures:Minimizes the risk of dealing with imposters.Minimizes the risk of undetected message

tampering and forgery.Retains a high degree of information security.

29

SOURCES OF INFORMATION

asclonline.com/images/d/d4/Simple_Guide_to_Digital_Signatures.pdf

www.youdzone.com/signature.htmlen.wikipedia.org/wiki/Digital_signatureswww.cca.gov.inesolutions.net.in/digitalsignatures.htmlnsdl.co.in/business/cirRec_18Mar08.doc

30