client-certificate-auth API Reference
client-certificate-auth API Reference / parsers / parseRfc9440
Function: parseRfc9440()
parseRfc9440(
headerValue):PeerCertificate|null
Defined in: parsers.js:476
Parse an RFC 9440 Client-Cert value: an RFC 8941 Byte Sequence, i.e. base64 DER between colons and nothing else. Cloudflare's RFC 9440 forwarding and Google Cloud's {client_cert_leaf} variable both produce this form. Anything outside the colons (parameters, joined repeats, bare base64) is rejected.
Parameters
headerValue
string
RFC 9440 formatted certificate
Returns
PeerCertificate | null
Parsed certificate or null on failure