Generate CSR (Certificate Signing Request) on macOS

This section provides a tutorial example on how to create a CSR (Certificate Signing Request) with auto-generated private/public key pair on macOS using Keychain Access.

With my own root CA certificate created, now I am in business to issue new certificates for others that are signed by my root CA.

Normally, if John from the Internet wants me to issue a certificate for him, he has to generate a CSR (Certificate Signing Request) by himself and sent it to me for signing.

But if he has no tools to generate a CSR, I can generate one on his behalf.

1. Click "Keychain Access > Certificate Assistant > Request a Certificate From a Certificate Authority" menu. The Certificate Assistant dialog box shows up.

2. Enter the following and click "Continue".

User Email Address: joe.doe@gmail.com
Common Name: Joe Doe
CA Email Address: herong_yang@yahoo.com
Request is: [x] Saved to disk
            [ ] Let me specify key pair information

3. Enter the following and click "Continue".

User Email Address: joe.doe@gmail.com
Common Name: Joe Doe
CA Email Address: herong_yang@yahoo.com
Request is: [x] Saved to disk
            [ ] Let me specify key pair information

4. Specify "joe.csr" as the CSR file name in "~/temp" folder and click "Save".

Now I can send a copy of "joe.csr" to Joe for him to keep.

Generate CSR (Certificate Signing Request) on macOS
Generate CSR (Certificate Signing Request) on macOS

Table of Contents

 About This Book

 Introduction of PKI (Public Key Infrastructure)

 Introduction of HTTPS (Hypertext Transfer Protocol Secure)

 Using HTTPS with Google Chrome

 Using HTTPS with Mozilla Firefox

 HTTPS with Microsoft Edge

 Using HTTPS with Apple Safari

 HTTPS with IE (Internet Explorer)

 Android and Server Certificate

 iPhone and Server Certificate

 Windows Certificate Stores and Console

 RDP (Remote Desktop Protocol) and Server Certificate

macOS Certificate Stores and Keychain Access

 What Is Keychain Access on macOS

 Listing of Trusted Root CA in macOS

 Exporting Root Certificate to File from macOS

 Delete/Untrust Certificates from macOS

 Unlock Keychain to Access Certificate on macOS

 Import Server Certificates to macOS

 Create My Own Root CA on macOS

 Review My Root CA Certificate on macOS

 Review Private Key of My CA Certificate on macOS

Generate CSR (Certificate Signing Request) on macOS

 Issue New Certificate with My CA on macOS

 Verify Certificate Signed by My CA on macOS

 Perl Scripts Communicating with HTTPS Servers

 PHP Scripts Communicating with HTTPS Servers

 Java Programs Communicating with HTTPS Servers

 .NET Programs Communicating with HTTPS Servers

 CAcert.org - Root CA Offering Free Certificates

 PKI CA Administration - Issuing Certificates

 Comodo Free Personal Certificate

 Digital Signature - Microsoft Word

 Digital Signature - OpenOffice.org 3

 S/MIME and Email Security

 PKI (Public Key Infrastructure) Terminology

 Outdated Tutorials

 References

 Full Version in PDF/EPUB