Description

You can easily decode or view the non-encoded version of a Certificate, Certificate Signing Request (CSR), or Private Key using OpenSSL, use the following commands.

A decoded Private Key will only show you:
- The key length
- Modulus
- PublicExponent
- PrivateExponent
- Encryption factors (prime1, prime2, exponent1, exponent2, and coefficient)

A decoded Certificate will provide you with:
- Version
- FQDN (CN or Common Name)
- Serial number
- Issuer information
- Subject
- Encryption factors (such as modulus, signature algorithm, keys, policies, etc..)

A decoded Certificate Signing Request (CSR) will show you
- Version
- Public Key size
- FQDN (CN or Common Name)
- Encryption factors (modulus, algorithm, and exponent)

openssl req -noout -text -in csr_file.csr

openssl in -noout -text -in key_file.key

openssl x509 -noout -text -in cert_file.cer

(DC) Decode Private Key, Certificate or CSR?

Description