Convert pfx\p12 to crt and key with openssl

Step-by-step guide

1. pkcs12 -in [yourfile.pfx] -nocerts -out [keyfile-encrypted.key]
2. rsa -in [keyfile-encrypted.key] -out [keyfile-decrypted.key]
3. pkcs12 -in [yourfile.pfx] -clcerts -nokeys -out [certificate.crt]