Common OpenSSL Commands with Keys and Certificates

Generate RSA private key with certificate in a single command

Openssl Generate Rsa Key With Passphrase Windows 7

Generate Certificate Signing Request (CSR) from private key with passphrase

Generate RSA private key (2048 bit)

Generate a Certificate Signing Request (CSR)

Openssl Generate Rsa Key Pair

Generate RSA private key (2048 bit) openssl genrsa -out private.pem 2048 Generate a Certificate Signing Request (CSR) openssl req -sha256 -new -key private.pem -out csr.pem Generate RSA private key (2048 bit) and a Certificate Signing Request (CSR) with a single command openssl req -new -newkey rsa:2048 -nodes -keyout server.key -out server.csr Convert private key to PEM format openssl rsa -in server.key -outform PEM -out server.pem. Host. AddKeysToAgent yes UseKeychain yes IdentityFile /.ssh/idrsa; Add your SSH private key to the ssh-agent and store your passphrase in the keychain. If you created your key with a different name, or if you are adding an existing key that has a different name, replace idrsa in the command with the name of your private key file.

Generate RSA private key (2048 bit) and a Certificate Signing Request (CSR) with a single command

Convert private key to PEM format

Generate a self-signed certificate that is valid for a year with sha256 hash

View details of a RSA private key

View details of a CSR

View details of a Certificate

View details of a Certificate in DER format

Convert a DER file (.crt .cer .der) to PEM

Openssl Generate Pem Key

Convert a PEM file to DER

OpenSSL is a robust, commercial-grade, and full-featured toolkit for the Transport Layer Security (TLS) and Secure Sockets Layer (SSL) protocols. It’s useful but hard to remember so many commands, so I have listed some common usages below.

General OpenSSL Commands

• Generate a new RSA private key

• Generate a new ECC private key

• Generate a new private key and Certificate Signing Request

• Generate a self-signed certificate

• Generate a certificate signing request (CSR) for an existing private key

• Generate a multi-domain SSL certificate signing request (CSR) for an existing private key

• Generate a certificate signing request based on an existing certificate

• Remove a passphrase from a private key

Checking Using OpenSSL

• Check a Certificate Signing Request (CSR)

• Check a private key

• Check a certificate

• Check a PKCS#12 file (.pfx or .p12)

• Check the chained certificates

Debugging Using OpenSSL

• Check an MD5 hash of the public key to ensure that it matches with what is in a CSR or private key

• Check an SSL connection. Rsa key generation in java. All the certificates (including Intermediates) should be displayed

• Check an SSL connection using specified CA

Converting Using OpenSSL

• Convert a DER file (.crt .cer .der) to PEM

• Convert a PEM file to DER

• Convert a PKCS#12 file (.pfx .p12) containing a private key and certificates to PEM

• Convert a PEM certificate file and a private key to PKCS#12 (.pfx .p12)