Cybersecurity Compliance
UIDAI AUA / KUA Compliance: Aadhaar Authentication Security Explained
Organizations that use Aadhaar authentication - as Authentication User Agencies (AUA) or KYC User Agencies (KUA) - operate under strict UIDAI security and audit obligations. Because Aadhaar involves sensitive biometric and identity data, UIDAI mandates specific technical controls, information-security policies and independent audits. This guide explains what AUAs and KUAs must do to stay compliant.
Who must comply: AUA, KUA, ASA and Sub-AUA
An AUA uses Aadhaar authentication to verify identity for its services; a KUA additionally performs e-KYC. Both connect to UIDAI's Central Identities Data Repository (CIDR) through an Authentication Service Agency (ASA). Sub-AUAs use another AUA's infrastructure.
Every entity in this chain carries UIDAI security obligations proportionate to its role - and UIDAI can audit any of them.
Core UIDAI security requirements
- Encrypt the Personal Identity Data (PID) block at capture and never store it
- Do not store Aadhaar numbers in plain text; use reference keys / tokenization where permitted
- Maintain a UIDAI-aligned Information Security Policy and audit logs
- Restrict and monitor access to authentication infrastructure
- Secure the ASA connectivity and network segmentation of the auth environment
- Undergo periodic information-security audits by a recognized auditor
Audits and evidence
UIDAI expects AUAs/KUAs to undergo regular information-security audits covering the authentication and e-KYC environment, with findings remediated and documented. A CERT-In-aligned audit methodology is commonly used to produce the evidence UIDAI and downstream partners expect.
How to become UIDAI-compliant
- Scope your Aadhaar authentication / e-KYC environment and data flows
- Implement encryption, no-storage-of-PID, and access controls to UIDAI's spec
- Author a UIDAI-aligned information-security policy and logging regime
- Run an independent security audit (VAPT + configuration + policy review)
- Remediate findings and maintain an audit-ready evidence pack
Need help with this in practice?
A5 Cyber Nexus audits, remediates and certifies against these frameworks.
Frequently asked questions
Can we store the Aadhaar number or biometrics?
No. The PID block (including biometrics) must be encrypted at capture and never stored. Aadhaar numbers must not be stored in plain text; use reference keys/tokenization within what UIDAI permits.
Do AUAs/KUAs need a security audit?
Yes. UIDAI requires periodic information-security audits of the authentication and e-KYC environment. We deliver CERT-In-aligned audits that produce the evidence UIDAI and ASAs expect.
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