mbedTLS: HTTP Public Key Pinning

[MalteJ]

Hi,

I am trying to implement HTTP Public Key Pinning (HPKP) using mbedTLS. The TLS connection is set up, handshake is done and I have the peer's x509 certificate as an mbedtls_x509_crt struct. Now I am stuck. How do I access the subjectPublicKeyInfo that I need to hash?

Thank you!

Best,
Malte

[WiFive]

This may help
https://github.com/curl/curl/blob/02839 ... tls.c#L534