openssl

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The original was posted on /r/openssl by /u/maxcoder88 on 2023-03-21 14:15:03+00:00.

Hi,

I have certificate is exported with DER encoding. I want to get CRT , KEY , PEM file from CER file.

Could not read key from certificate.pem

I will convert from CER to PEM via below command.

openssl x509 -inform der -in certificate.cer -out certificate.pem

openssl pkey -in certificate.pem -out certificate.key

openssl crl2pkcs7 -nocrl -certfile certificate.pem | openssl pkcs7 -print_certs -out certificate.crt

openssl pkcs12 -export -out certificate.pfx -inkey certificate.key -in certificate.crt -certfile CACert.crt

or , I will convert Key files from PFX file?

openssl x509 -inform der -in certificate.cer -out certificate.pem
openssl pkcs12 -in certificate.pfx -nocerts -out certificate.key
openssl rsa -in certificate.key -out certificate_private.key
openssl rsa -in certificate.key -pubout -out  certificate_public.key
openssl pkcs12 -in certificate.pfx -clcerts -nokeys -out certificate.crt

Thanks,