![]() ![]() ![]() Openssl req -noout -modulus | openssl sha256 Generate a self-signed certificate for testing purposes with one year validity period, together with a new 2048-bit key: openssl req -x509 -newkey rsa:2048 -nodes -keyout -out -days 365 View and verify certificatesĬheck and display a certificate request (CSR): openssl req -noout -text -verify -in Verify and display a key pair: openssl rsa -noout -text -check -in View a PEM-encoded certificate: openssl x509 -noout -text -in View a certificate encoded in PKCS#7 format: openssl pkcs7 -print_certs -in View a certificate and key pair encoded in PKCS#12 format: openssl pkcs12 -info -in Verify an SSL connection and display all certificates in the chain: openssl s_client -connect The Kinamo SSL Tester will give you the same results, in a human-readable format.Ĭontrol whether a certificate, a certificate request and a private key have the same public key: openssl x509 -noout -modulus | openssl sha256 Remove a passphrase from an encrypted private key: openssl rsa -in -out Generate a new ECC private key: openssl ecparam -out server.key -name prime256v1 -genkey Create a self-signed certificate Generate a new certificate request using an existing private key: openssl req -new -sha256 -key -out Generate a certificate request starting from an existing certificate: openssl x509 -x509toreq -in -out -signkey Generate a new RSA private key: openssl genrsa -out 2048Įncrypt a private key with a passphrase: openssl rsa -in -out -des3 Typically, when you ordered a new SSL certificate you must generate a CSR or certificate signing request, with a new private key: openssl req -sha256 -nodes -newkey rsa:2048 -keyout -out Alternatively, use the Kinamo CSR Generator for easy CSR creation. You'll find an overview of the most commonly used commands below. OpenSSL is the true Swiss Army knife of certificate management, and just like with the real McCoy, you spend more time extracting the nail file when what you really want is the inflatable hacksaw. ![]()
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