https://app.knowbase.one/vault/rfc/docid/3476
RFC3110: RSA/SHA-1 SIGs and RSA KEYs in the Domain Name System (DNS)
Network Working Group D. Eastlake 3rd Request for Comments: 3110 Motorola Obsoletes: 2537 May 2001 Category: Standards Track RSA/SHA-1 SIGs and RSA KEYs in the Domain...