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Enforce extension uniqueness #155

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cpu opened this issue Sep 10, 2023 · 0 comments
Open

Enforce extension uniqueness #155

cpu opened this issue Sep 10, 2023 · 0 comments

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@cpu
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cpu commented Sep 10, 2023 •
edited

As a breaking API change rcgen should refuse to generate certificates with duplicate extensions.

RFC 5280 §4.2 says:

A certificate MUST NOT include more than one instance of a particular extension.

This can occur with the current API in two ways:

  1. Specifying duplicate extensions within CertificateParams.custom_extensions
  2. Specifying an extension in CertificateParams.custom_extensions that has the same OID as an extension rcgen emits natively (e.g. id-ce-subjectAltName, id-ce-authorityKeyIdentifier, etc).
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wip: refactoring extension handling cpu/rcgen
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@cpu