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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Ability to access certificate extensions through `Crypto` API `X509Certificate` class","articleBody":"### What is the problem this feature will solve?\n\nKey usages (not extend) are completely different and can only be accessed through certificate extension under OID 2.5.29.15 which contains value in a bit array format.\r\n\r\nKey usage can have for definition: Digital signature, Non-repudiation, Key encipherment, Data encipherment, Key agreement, Certificate signing, CRL signing, Encipher only, Decipher only.\r\n\r\nAs of now Crypto API only provides access to[ Extended Key usage under the `x509.keyUsage`](https://github.com/nodejs/node/issues/48727) but does not provide access to the Key Usage through the certificate Extensions part.\n\n### What is the feature you are proposing to solve the problem?\n\nHaving a method the class `x509` that can allow to have access to the Extension part of a certificate through a safe structure.\n\n### What alternatives have you considered?\n\nUsing 3rd party libraries like PKIjs or Forge, but I would like a native feature instead.","author":{"url":"https://github.com/jeffsec-aws","@type":"Person","name":"jeffsec-aws"},"datePublished":"2023-07-10T19:44:21Z","url":"https://github.com/nodejs/node/issues/48730"}