Electronic Record

1. Easy retrieval2. Easy to make copies3. Easily modifiable4. Environmental Friendly5. Distribution

2 & 3 lake of Authenticity and Integrity

Digital Signatures

Contents:

Information Technology(IT) Act 2000.Controller of Certifying AuthoritiesTechnical Aspects Digital Signature Certificate

The Information Technology Act, 2000

Chapter : II Digital Signature and Electronic Signature

Section 3 Authentication of Electronic Records

- Any Subscriber can Authentication of Electronic record by affixing his Digital Signature(Owner of DSC)

- Asymmetric Crypto System and Hash function which transform initial records to another records

- Any person can use Public Key for verification electronic records and signature

- The Private key + Public Key = Key Pair

The Information Technology Act, 2000

Chapter : II Digital Signature and Electronic Signature

Section 3A Electronic Signature

- Subscriber may authenticate any electronic record which considered reliable and may be specified in Second Schedule.

(Context, Control, Alteration)

Controller of Certifying Authorities

About Controller of Certifying Authorities

- Appointed Under Section 17 of IT Act 2000 for License and Regulate Certifying Authorities.

- Come into existence on 1st November, 2000

- Its aims at promoting the growth of e-Commerce and e-Governance through wider use of Digital Signature

- The CCA certifies the public keys of CAs using its own private key.

Controller of Certifying Authorities

Functions of Controller of Certifying Authorities- Supervision - Certifying Public Key- Laying Down Standards - Qualification and Experience of Employees- Specifying of Forms and Content of ESC- Specifying form of Account- Resolved conflict of CA’s and Subscribers- Laying down duties of CA’s

> Vision(To Create Trust) > Mission(Authentication of Electronic Document)

Technical Aspects of Digital Signature

Why Digital Signature? - Authenticity, Integrity and Non repudiation- e-Governance and e-Commerce

What is Digital Signature? - Electronic Signature- Transportable, No imitated, time stamped(Validity)- Private Key (Owner’s Key)- Public Key (Verification Key)- Hash Functions (Algorithm mapping)

Technical Aspects of Digital Signature

Message+

Signature

Hash

DecryptSignatureWith Sender’s Public Key

SIGN hashWith Sender’s Private key

Message+

signature

COMPARE

Calculated Hash

Message C-Form

SenderGCT

ReceiverDealer

Hash

Signed Message

Sent thru’ Internet

ifOK

Signatures verified

Thanking You

Prepared By : Paresh A. VadherM. +91 88665 79343pareshvadher16@yahoo.com