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Union of India - Section
Section 7 in The Digital Signature (End entity) Rules, 2015
7. Digital signature standards.
- The most important standards that shall be applicable for different activities associated with digital signature functions are as under-| Products | Standards |
| Cryptographic hash function | SHA-2 as specified in FIPS 180-4 |
| RSA Public Key Technology | PKCS# 1 RSA Encryption Standard ([2048, 4096 bit]); Version 1.5 |
| Encryption and digital signature | PKCS# 7, CMS |
| Validation of Digital Signature Certificate | RFC 5280 |
| ECC curve | NIST P-256, P-384, or P-521 |
| Long term signature formats | 1. CAdES RFC 5126, |
| 2. PAdES with CAdES | |
| Time stamp token | As specified RFC 3161 |