2. Requirements Language

This section preserves the RFC text for unsigned X.509 certificates, including id-alg-unsigned, id-rdna-unsigned, zero-length signatureValue, issuer handling, extension guidance, validation rules, IANA registrations, and the ASN.1 module.

Original RFC Text

2.  Requirements Language

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and
   "OPTIONAL" in this document are to be interpreted as described in
   BCP 14 [RFC2119] [RFC8174] when, and only when, they appear in all
   capitals, as shown here.