Unable to get local issuer certificate while processing chain

3
votes

I do have private key(my_ca.key) and public key(my_cert.crt) which is signed by DigiCert. Now I want to create RA(Registration Authority) and sign it by my private key . Here is the way I tried to do that. But when I try to export private and public key as pkcs12 file I have been getting error like this unable to get local issuer certificate getting chain. No idea how to solve this. Here my_cert.crt is extended from DigiCert High Assurance CA-3 and that one extended from DigiCert High Assurance EV Root CA

 SSL_SUBJ="/C=LK/ST=Colombo/L=Colombo/O=Nope/OU=mobile/CN=My root"

 openssl genrsa -out ra.key 4096
 openssl req -new -key ra.key -out ra.csr -subj "$SSL_SUBJ"
 openssl x509 -req -days 365 -in ra.csr -CA my_cert.pem -CAkey my_ca.pem -  set_serial 76964474 -out ra.crt 
 openssl rsa -in ra.key -text > ra_private.pem
 openssl x509 -in ra.crt -out ra_cert.pem


 openssl pkcs12 -export -out ca.p12 -inkey my_ca.pem -in my_cert.pem -name "cacert" -passout pass:password
 openssl pkcs12 -export -out ra.p12 -inkey ra_private.pem -in ra_cert.pem -  chain -CAfile my_cert.pem -name "racert" -passout pass:password
1
sslopensslx509pkipkcs#12

1 Answers

7
votes

You usually can't use a certificate issued by a public CA to sign anything but client or server traffic; you won't be able to use it for your RA.

The error message indicates that there is a problem with the intermediate certificates. Make sure that you add both of Digicert's certificates to the my_cert.pem file before exporting it to pkcs12