Tag Archives: rsa

Check key length from the command line with OpenSSL

Check key length from the command line with OpenSSL | To check the key length of a certificate, use the openssl command. Here is how to check an RSA private key length: $ openssl rsa -text -noout -in private.key The top of the output will have: Private-Key: (1024 bit) For a certificates (.crt or .pem), use this command: $ openssl x509 -text -noout -in certificate.crt