openssl x509

all

Manage X.509 certificates.

Examples (4)

Display certificate information

openssl x509 -in filename.crt -noout -text

Display a certificate's expiration date

openssl x509 -enddate -noout -in filename.pem

Convert a certificate between binary DER encoding and textual PEM encoding

openssl x509 -inform der -outform pem -in original_certificate_file -out converted_certificate_file

Store a certificate's public key in a file

openssl x509 -in certificate_file -noout -pubkey -out output_file