USB Token Buying Guide: Which DSC Token to Choose in 2025

A DSC is a cryptographic key that must live inside a hardware USB token — you can't download it to your laptop. India's Controller of Certifying Authorities only permits FIPS 140-2 Level 2 certified tokens, which narrows the field to a handful of models. Here's how to pick.

The main FIPS-compliant models

• ePass 2003 Auto — most popular, universal driver support, best macOS compatibility.
• TrustKey (Watchdata) — good Windows support, slightly cheaper.
• Watchdata ProxKey — common with older Certifying Authorities.
• HYP2003 — HYP's variant of the ePass; interchangeable in practice.
• TrustKey G&D — used less commonly, still FIPS-compliant.

Which one should you buy?

ePass 2003 Auto for most people. It works on Windows, macOS and Linux, has driver support that's actively maintained, and is compatible with every Certifying Authority we work with.

How long does a token last?

Hardware lifespan is typically 5–7 years. The certificate inside expires per your DSC validity (1, 2 or 3 years). You can also load up to 3 certificates on one token — useful if you hold multiple roles across companies.

PIN and lockout

Every token has a PIN. Enter it wrong 5–10 times (varies by model) and the token permanently locks — you cannot recover it, you cannot reset it, and the DSC inside is gone. Write down your PIN somewhere safe.

We supply preloaded ePass 2003 Auto tokens with every new DSC issuance in Bangalore — driver installed, PIN configured, and validated on a sample signature before handover.