loading certificates through keystore fails

[Protheon]

Hi. on attempting to load the keystore the same way mentioned here
ssl.keystore.location=C:\temp\kafka-certs\keystore.p12
ssl.keystore.password=XXXXX

i run into the error Error reading ssl.keystore.location PKCS#12 file: C:\temp\kafka-certs\keystore.p12: error:0D06B08E:asn1 encoding routines:asn1_d2i_read_bio:not enough data

this suggests that the file is missing or somehow is not found. i can confirm that the file is there and works as i have loaded it properly using another loader.

if i extract the keys and certificates and load directly, this works:
config.set("ssl.ca.location", "%path_to%/chain.pem");
config.set("ssl.certificate.location", "%path_to%/client_cert");
config.set("ssl.key.location", "%path_to%/client_key");
config.set("ssl.key.password"

This however poses a security risk by exposing the pkey in a file and is not accepted.

Do you have any idea what could be going wrong when loading the keystore?

I'm using
OS: Windows 10
Framework: .net6.0 confluentinc/confluent-kafka-dotnet sdk, that references this dll.