How to write code for for openssl commandline

[mangesh....@gmail.com]

Hi,

I am trying to code following openssl commandline in C++
Can somebody share the snippet for the same

# convert public key from pem to der
openssl asn1parse -noout -inform pem -in www.example.com.pubkey.pem -out www.example.com.pubkey.der

# sha256 hash and base64 encode der to string for use
openssl dgst -sha256 -binary www.example.com.pubkey.der | openssl base64

I need sha256 base64 encoded has for publickey.

Thanks,
Mangesh

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