As part of Government’s Digital India Initiative, C-DAC has developed e-Hastakshar – C-DAC’s eSign service that facilitates instant signing of documents online by citizens in a legally acceptable form. Using this, an Aadhaar holder can electronically sign a form/document anytime, anywhere, using device such as Personal Computer or Laptop or Mobile. 

Through e-Hastakshar, C-DAC offers hassle-free fully paperless citizen services and convenience to users. C-DAC utilizes service of Unique Identification Authority of India (UIDAI) for on-line authentication and Aadhaar eKYC service. 

e-Hastakshar service supports Online Aadhaar Authentication Modes - One-time password (OTP), TOTP, Fingerprint, IRIS, Face (Mobile Apps only) based modes of authentication for leveraging eKYC service of UIDAI. 

·        e-Governance

·        Citizen Services

·        Office Automation

·        Digital Locker

·        Financial Sector

Time and Cost Effective: Streamlines the signing process, reducing the time and cost associated with traditional paper-based methods.

Legally Valid Signatures: Ensures that digital signatures are recognized and valid under relevant legal frameworks, including the Indian IT Act 2000.

Easy and Secure Accessibility: Provides a convenient and secure way to digitally sign documents anytime, anywhere, using various devices.

Compliance with Indian IT Act 2000: Guarantees legally valid signatures in accordance with the provisions of the Indian IT Act 2000.

Enhanced Privacy Protection: Safeguards user privacy by using only the document's thumbprint (hash) for signing, rather than the entire document, ensuring confidentiality.

• Built on a RESTful API architecture and Web-Based Solution
• Leveraged a FIPS 140-2 certified device for managing keys used in signing, encryption, and decryption
• Seamless integration with Applications to enable eSign facility.
• eHastakshar APK is available on Google play store and GOV.IN AppStore.

eSign APIs offer seamless integration with a wide variety of programming languages, like Java, .NET, Python, and Node.js.

Centre for Development of Advanced Computing (C-DAC)

Innovation Park, Survey No. 34/B-1

Panchavati , Pashan, Pune - 411008

Email: ess[at]cdac[dot]in

Toll Free Number: 1800 233 7385