DigiLocker PDF Digital Signature Verification

Verify your CBSE marksheet, driving license, or Aadhaar card signature instantly. Upload your PDF to our online verifier to trust the signature chain and download a stamped document containing a valid checkmark.

1. Why does DigiLocker show “Signature Not Verified”?

When you download official certificates, vehicle registrations, or academic marksheets from the DigiLockerportal, they include a digital signature block. Inside standard PDF viewers, this block often displays a **yellow question mark** or says **“Signature Not Verified”**.

This occurs because DigiLocker and other Indian government services (such as CBSE, e-District portals, and Income Tax departments) use digital signature certificates issued under the Controller of Certifying Authorities (CCA) of India.

By default, standard PDF viewers like Adobe Acrobat Reader or browser PDF viewers do not include the CCA India Root Certificate in their trusted root store. Because the viewer cannot verify the authority that issued the signature, it reports it as unverified. For a deeper technical explanation, see our guide on why Adobe shows the “Signature Not Verified” warning.

2. Step-by-Step: Verifying DigiLocker PDF Online

To quickly resolve the signature trust issue and create a printable, official version of your certificate with a green verified checkmark stamp, follow these instructions:

1. Download your digitally signed PDF certificate directly from the DigiLocker app or website. Do not use the browser's “Print to PDF” function, as this removes the digital signature.
2. Go to the PDF SignCheck homepage and drag your downloaded document into the upload zone.
3. Our cryptographic parser will extract the Indian CCA digital signature block and verify the hash against the certificate chain.
4. Download the stamped PDF. It will contain a permanent, visual **“Signature valid ✓”** badge, rendering a green checkmark on all devices and browsers.

For a comprehensive overview of the verification process and how PKCS#7 validation works, read our complete guide on verifying PDF digital signatures.

3. Supported DigiLocker Document Types

PDF SignCheck supports verification of all digitally signed documents available through DigiLocker and related Indian government platforms. Here are the most common document types:

• UIDAI Aadhaar Cards: e-Aadhaar PDFs downloaded from uidai.gov.in or fetched via DigiLocker. These are password-protected (first 4 letters of name + birth year) and digitally signed by UIDAI's CA.
• CBSE Marksheets & Certificates: Academic marksheets, migration certificates, and passing certificates from the Central Board of Secondary Education.
• Driving Licenses: Digital driving licenses issued by state RTOs (Regional Transport Offices), accessible through DigiLocker.
• Vehicle Registration Certificates (RC): Digital RCs linked to your Aadhaar or mobile number on DigiLocker.
• PAN Cards: e-PAN cards from the Income Tax Department, signed using the department's DSC.
• Income Tax Returns (ITR): ITR-V acknowledgement PDFs from the Income Tax e-filing portal.
• Caste, Income & Domicile Certificates: Issued through state e-District portals (like the UP, MP, Bihar, Rajasthan e-District services).
• NFSA Ration Cards: National Food Security Act ration cards from state food departments.
• Birth & Death Certificates: Issued through the Civil Registration System (CRS).
• Land Records & Property Documents: Digitally signed land records from state revenue departments.

4. Trusted Certifying Authorities in India

The digital signatures verified under the CCA India guidelines are cryptographically secure and legally recognized under the Information Technology (IT) Act, 2000. Under Section 35 of the IT Act, the CCA licenses and regulates all Certifying Authorities in India. Common certifying authorities that PDF SignCheck validates include:

• eMudhra: Commonly used for tax returns, corporate filings, and GST registrations. One of the largest licensed CAs in India.
• National Informatics Centre (NIC): Used for official government emails, certificates, land registries, and most central government documents.
• SafeScrypt (Sify): Widely deployed in commercial contracts and digital signatures for banking and insurance sectors.
• CDAC (Centre for Development of Advanced Computing): Used in academic documents, e-Sign services, and Aadhaar-based electronic signatures (Section 3A of the IT Amendment Act, 2008).
• Capricorn CA: Employed in e-procurement, government tenders, and RFP submissions.
• NSDL e-Governance: Used for PAN-related documents and tax return filing infrastructure.

All these CAs operate under the regulatory framework of the CCA India. Their root certificates are validated by PDF SignCheck through the Mozilla CA trust store, ensuring cryptographic integrity verification without requiring manual trust configuration.

5. Legal Validity of DigiLocker Documents

Documents issued through DigiLocker are legally valid and equivalent to original physical documents. This is mandated by:

• IT Act 2000, Section 5: Electronic signatures applied using a valid Digital Signature Certificate carry the same legal standing as handwritten signatures.
• IT Act 2000, Section 3A (Amendment 2008): Introduced Aadhaar-based electronic signatures (e-Sign), enabling paperless signing for government services through DigiLocker.
• Rule 9A of the IT Rules: Documents issued through DigiLocker are deemed to be at par with original physical documents for all purposes.

For the complete legal framework, refer to the Ministry of Electronics and Information Technology (MeitY) official page on the IT Act.