Error message: OpenVPN error: PolarSSL : error passing config private key (iOS11)

TEERASAK

I'm using OpenVPN with Raspberry Pi3. My previous installation of OpenVPN using PiVPN worked fine.

Becuase I re-install the Raspberry Pi, and install Open VPN using PiVPN again, now it faces the error:

Error message: OpenVPN error: PolarSSL : error passing config private key : PKCS5 - Requested encryption or digest alg not available.

I'm using OpenVPN for iOS (iphone with iOS11).

Could you please advise how to fix this issue.

Thank you

TinCanTech

Like so:
https://community.openvpn.net/openvpn/wiki/IOSinline

TEERASAK

Thank you, TinCanTech. I tried to read the link you gave, but not quite clear. Could you please help provide more detail, step to fix the problem.