Enter DNS records in standard zone file format
⚠️ Educational Tool Only
This is a simulation tool for educational purposes. It demonstrates how DNSSEC zone signing works but does not perform actual cryptographic signing.
For production DNSSEC signing, use proper tools like dnssec-signzonefrom BIND, or enable DNSSEC through your DNS provider (Cloudflare, Route 53, etc.).
About Zone Signing
DNSSEC zone signing is the process of cryptographically signing all DNS records in a zone to enable DNSSEC validation. This process transforms a standard DNS zone file into a DNSSEC-signed zone that can be verified by resolvers. Understanding zone signing helps you comprehend how DNSSEC works at a technical level.
The complete zone signing process involves several steps:
- Key Generation: Creating DNSKEY records including both Key Signing Keys (KSK) and Zone Signing Keys (ZSK)
- Record Signing: Signing each record set with RRSIG records using the ZSK
- Authenticated Denial: Adding NSEC or NSEC3 records to prove non-existent records
- Chain Establishment: Publishing DS records in the parent zone to create the chain of trust
The signing process ensures all DNS records are cryptographically signed and can be verified by resolvers checking the chain of trust. Each record set gets its own RRSIG record that proves authenticity. The signatures have expiration dates and must be periodically re-signed to maintain validation.
This tool provides a simplified simulation of zone signing for educational purposes. In production, use proper tools like dnssec-signzone from BIND, or enable DNSSEC through your DNS provider which handles signing automatically. For implementation details, see our Getting Started Guide.