I am trying to generate a private-public key pair and convert the public key into a certificate which can be added into my truststore.
To generate private & public key:
openssl rsa -in private.pem -outform PEM -pubout -out public_key.pem
Now I am trying to convert this to a certificate:
openssl x509 -outform der -in public_key.pem -out public.cer
But I get an error:
7962:error:0906D06C:PEM routines:PEM_read_bio:no start line:/BuildRoot/Library/Caches/com.apple.xbs/Sources/OpenSSL098/OpenSSL098-64.30.2/src/crypto/pem/pem_lib.c:648:Expecting: TRUSTED CERTIFICATE
All tutorials show that I have to convert pem to crt before adding to a truststore.