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open-vault/changelog/13927.txt

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Use application/pem-certificate-chain for PEMs (#13927) * Use application/pem-certificate-chain for PEMs As mentioned in #10948, it appears we're incorrectly using the `application/pkix-cert` media type for PEM blobs, when `application/x-pem-file` is more appropriate. Per RFC 5280 Section 4.2.1.13, `application/pkix-crl` is only appropriate when the CRL is in DER form. Likewise, Section 4.2.2.1 states that `application/pkix-cert` is only applicable when a single DER certificate is used. Per recommendation in RFC 8555 ("ACME"), Section 7.4.2 and 9.1, we use the newer `application/pem-certificate-chain` media type for certificates. However, this is not applicable for CRLs, so we use fall back to `application/x-pem-file` for these. Notably, no official IETF source is present for the latter. On the OpenSSL PKI tutorial (https://pki-tutorial.readthedocs.io/en/latest/mime.html), this type is cited as coming from S/MIME's predecessor, PEM, but neither of the main PEM RFCs (RFC 934, 1421, 1422, 1423, or 1424) mention this type. Signed-off-by: Alexander Scheel <alex.scheel@hashicorp.com> * Add changelog entry Signed-off-by: Alexander Scheel <alex.scheel@hashicorp.com>
2022-02-08 13:12:33 +00:00
```release-note:improvement
secrets/pki: Use application/pem-certificate-chain for PEM certificates, application/x-pem-file for PEM CRLs
```