To examine the content of a generated .csr file enter the following:
openssl req -text -noout -in website.csr
You will get information like this for example:
Certificate Request: Data: Version: 0 (0x0) Subject: C=country, ST=province, L=city, O=business name, CN=common name Subject Public Key Info: Public Key Algorithm: rsaEncryption RSA Public Key: (2048 bit) Modulus (2048 bit): <cut> Exponent: 65537 (0x10001) Attributes: Requested Extensions: X509v3 Basic Constraints: CA:FALSE X509v3 Key Usage: Digital Signature, Non Repudiation, Key Encipherment X509v3 Subject Alternative Name: DNS:www.example.com, DNS:example.com Signature Algorithm: sha256WithRSAEncryption <cut>