What is a Digital Signature Certificate (DSC)
A Digital Signature Certificate, commonly called a DSC or E Token, is the electronic equivalent of your handwritten signature for digital documents and online government filings. For Indian exporters and importers, a DSC is not optional. It is the mandatory authentication credential for filing applications on the DGFT portal, signing shipping bills on ICEGATE, completing customs declarations, submitting GST returns above the prescribed threshold, filing ROC forms with the Ministry of Corporate Affairs, participating in e tenders, and signing EPCG, IEC, RCMC, and Advance Authorisation applications online.
Legally, a DSC provides three guarantees. First, authentication: the signer is who they claim to be. Second, integrity: the document has not been altered after signing. Third, non repudiation: the signer cannot later deny having signed. These three properties are recognised under the Information Technology Act 2000 and give digitally signed documents the same legal standing as paper signatures. See the Ministry of Electronics and Information Technology DSC page for the governing framework.
The three classes of DSC and which one you need
Until the 2020 consolidation, India recognised three classes of Digital Signature Certificates. Following the Controller of Certifying Authorities (CCA) guidelines, Class 1 and Class 2 were merged into Class 3. As of 2026, Class 3 is the only DSC class issued for new applications and is the required class for virtually all EXIM, customs, GST, and MCA filings. See the CCA India portal for the current class structure.
Class 3 DSC
Highest assurance level. Requires physical or video based verification of the applicant. Used for all DGFT filings, customs declarations, GST returns, ROC forms, e tenders, bank transactions, and income tax filings. This is the DSC you need for EXIM business.
DGFT Specific DSC (Class 3 with DGFT Organisational Certificate)
A variant of Class 3 specifically issued for DGFT portal use. Contains organisational details tied to the IEC. Required for filing IEC applications, RCMC, EPCG, Advance Authorisation, and all other DGFT transactions on behalf of an organisation.
Document Signer Certificate (DSC)
A system level DSC used by organisations to digitally sign large volumes of outbound documents (invoices, contracts, statements) without manual signing on each one. Relevant for high volume exporters who want to automate shipping bill and invoice signing workflows.
What a DSC actually contains
A DSC is a cryptographic file issued by a licensed Certifying Authority. It contains the subscriber’s identity information, a public key used for signature verification, the issuing CA’s digital signature, the validity period, and a unique serial number. The corresponding private key is stored on a USB cryptographic token (the E Token). The private key never leaves the token, which is why DSCs are considered hardware bound and secure.
A DSC typically includes: full name of the holder, email address, country, organisation name (for organisational DSCs), designation, PAN, and validity dates. For DGFT use, the DSC must additionally carry the IEC number mapping for the holding organisation.
Which Certifying Authorities issue DSCs in India
DSCs can only be issued by licensed Certifying Authorities under the Controller of Certifying Authorities. As of 2026, the main licensed CAs serving the EXIM community include:
- eMudhra
- Capricorn Identity Services
- VSign
- (n)Code Solutions
- Verasys (Pantagon)
- SafeScrypt (Sify)
- IDRBT
All licensed CAs issue DSCs of comparable technical quality. Price, issuance speed, after sales support, and renewal experience are the practical differentiators. RASP International helps clients pick the right CA for their specific use case and annual volume.
Why EXIM operations require DSC
DGFT portal: everything runs on DSC
Every filing on the DGFT e services portal requires a Class 3 DSC. This includes IEC fresh application, IEC modification, IEC KYC update (now mandatory annually), RCMC application, EPCG application ANF 5A, Advance Authorisation filings, RoDTEP e scrip claims, duty drawback applications, and Status Holder Certificate applications. Without a DSC, you cannot transact on DGFT.
ICEGATE: shipping bill and customs
Your Customs House Agent files shipping bills on ICEGATE using a DSC. The CHA’s DSC is linked to your IEC in the system. Some exporters file directly via ICEGATE, which also requires a DSC.
GST portal: mandatory above threshold
DSC is mandatory for companies and LLPs filing GST returns. Proprietorships and partnerships can use EVC (Electronic Verification Code) in some cases. For export related GST refund filings (RFD 01), DSC is the standard route.
MCA: company and LLP compliance
Every Director KYC, annual filing, board resolution, and change in company master data on the Ministry of Corporate Affairs portal requires DSC. Directors and Designated Partners must maintain valid DSCs at all times.
Income Tax: higher threshold cases
Companies, LLPs, and individuals subject to tax audit must file income tax returns with DSC. Export businesses typically fall in this category.
E tenders and procurement portals
Government e tender portals and GeM (Government eMarketplace) require DSC for bid submission and contract signing.
Banking and trade finance
Internet banking for corporates, trade finance platforms, and Letter of Credit filing systems increasingly require DSC for authorisation of high value transactions.
Documents required to obtain a DSC
For Individual DSC
- PAN card (original plus self attested copy)
- Aadhaar card or passport
- Recent passport size photograph
- Mobile number and email for OTP verification
- Address proof (Aadhaar, passport, driving licence, or utility bill)
For Organisational DSC (DGFT, GST, MCA use)
- All individual DSC documents for the authorised signatory
- Certificate of Incorporation (for company), Partnership Deed (for partnership), or LLP Agreement (for LLP)
- Board Resolution or authorisation letter appointing the applicant as authorised signatory
- PAN card of the organisation
- GST registration certificate
- Bank statement or cancelled cheque of the organisation
- Organisation address proof (utility bill or rent agreement)
- Organisational identity proof (IEC certificate for exporters, or GST for GST applicants)
Step by step: how to obtain a DSC in 2026
1. Choose a Certifying Authority
Compare the licensed CAs listed on the CCA portal. Price is only one factor. Look at support quality, renewal experience, and CA service uptime.
2. Select DSC type and validity
For EXIM use, select Class 3 with a 2 year or 3 year validity. A 2 year DSC is the most common choice. A 3 year DSC costs more upfront but saves the renewal cycle.
3. Complete online application
Most CAs offer online application portals. Fill the application form, upload documents, and submit.
4. Identity verification
Modern DSC issuance uses Aadhaar based paperless verification with OTP. Video KYC is an alternative for applicants without Aadhaar. Legacy paper verification is being phased out.
5. Payment
Complete payment online. The CA issues a payment receipt.
6. DSC download to USB token
Once approved (typically within 1 to 2 working days), you receive the DSC on a USB cryptographic token (ePass 2003, Proxkey, or equivalent). Plug the token into your computer, run the CA’s download utility, and the DSC is bound to the token.
7. Register DSC on relevant portals
Register the DSC on DGFT, GST, MCA, ICEGATE, and other portals you use. Each portal has a one time DSC registration step where your digital signature profile is linked to your IEC, GSTIN, or CIN.
DSC renewal and replacement
DSCs expire at the end of their validity period. You cannot extend an expired DSC. You must obtain a fresh DSC through the standard application process. Best practice is to renew 30 days before expiry to avoid gaps in your DGFT or GST filing ability. An expired DSC mid shipping bill filing can delay customs clearance.
Lost or damaged USB tokens require the DSC to be revoked and reissued. The CA issues a fresh token after verification. During the interim, filings must pause or use an alternate signatory’s DSC.
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Frequently Asked Questions
Can one DSC be used for multiple companies?
Individual DSCs can be used across multiple organisations where the holder is an authorised signatory, subject to separate registration on each portal. Organisational DSCs are tied to a specific CIN or IEC and cannot be shared across entities.
Is Aadhaar based eSign an alternative to DSC?
For some use cases yes. Individuals can use Aadhaar eSign for GST return signing, income tax filing, and certain MCA filings. For DGFT transactions, organisational e tenders, and most EXIM filings, a hardware based Class 3 DSC remains mandatory.
How long does DSC issuance take?
With Aadhaar based verification, DSCs are typically issued within 1 to 2 working days. Video KYC can extend this to 3 to 5 working days. Paper based legacy verification takes 7 to 10 working days.
What happens if my DSC is compromised?
Report immediately to the issuing CA for revocation. A revoked DSC cannot be used to sign documents. Apply for a fresh DSC in parallel. Treat DSC compromise like a credit card fraud report: time is of the essence.
Does my authorised signatory need a separate DSC from mine?
Yes. Each authorised signatory needs their own individual DSC. DSCs cannot be shared. If your company has multiple directors or designated partners, each one needs their own DSC for MCA and other filings.
Can a foreign national obtain an Indian DSC?
Yes. Foreign nationals serving as directors of Indian companies can obtain DSCs using passport and OCI or PIO documents. Certain CAs specialise in foreign national DSC issuance. Documentation requirements are more extensive.
What is the difference between DSC and digital signature?
A digital signature is the cryptographic output produced when you sign a document. A Digital Signature Certificate is the credential that proves your identity as the signer. The DSC enables digital signatures. They are related but distinct concepts.
Do I need to back up my DSC?
The private key stored on the USB token cannot be exported or backed up. This is a security feature. If the token is lost or damaged, you apply for a fresh DSC. Always keep the USB token in a secure place and have a backup DSC holder in your organisation.
How RASP International handles your DSC
DSC advisory
We guide first time exporters through the choice of CA, DSC class, validity period, and token type based on your transaction volume and compliance scope.
End to end DSC procurement
We handle the entire DSC application process on your behalf. Document preparation, CA selection, online application filing, verification coordination, and token delivery to your office. Typical turnaround is 1 to 2 working days from document submission.
Portal registration
We register your new DSC on DGFT, ICEGATE, GST, MCA, and any other portals you use. This is the step most exporters get stuck on. Each portal has its own registration quirks.
DSC renewal tracking
DSC expiry cannot be extended. We track your DSC validity calendar and initiate renewal 30 days before expiry. No missed filing windows.
Bulk and multi signatory setups
For companies with multiple directors, partners, or authorised signatories, we coordinate bulk DSC issuance and registration so every signatory is ready to transact from day one.
Troubleshooting and revocation
If your DSC faces technical issues (driver conflicts, token recognition problems, expired root certificates), we handle the resolution. If your DSC is compromised or lost, we handle revocation and emergency reissue.
Authoritative sources and further reading
- Controller of Certifying Authorities (CCA) India
- MeitY: Digital Signature Certificate page
- DGFT e services portal
- ICEGATE customs portal
- Ministry of Corporate Affairs portal
- GST portal
- Government eMarketplace (GeM)
- Income Tax e filing portal
Related services on raspinternational.in
- IEC Registration
- RCMC Registration
- DGFT Licensing and Compliance
- EXIM Licences and Registrations
- GST Compliance for Exports
- Customs Clearance Services
- Export Incentives
- How to Claim EPCG in 2026