A certificate signing request (CSR) is a message sent to a certificate authority to request the signing of a public key and associated information. Most commonly a CSR will be in a PKCS10 format. The contents of a CSR comprises a public key, as well as a common name, organization, city, state, country, and e-mail. Not all of these fields are required and will vary depending with the assurance level of your certificate. Together these fields make up the Certificate Signing Request (CSR).
The CSR is signed by the applicant's private key; this proves to the CA that the applicant has control of the private key that corresponds to the public key included in the CSR. Once the requested information in a CSR passes a vetting process and domain control is established, the CA may sign the applicant's public key so that it can be publicly trusted.
Before you can order an SSL Certificate, you will need to generate a CSR. The process for generating a CSR varies from platform to platform. Some will use a command line, others will walk through a GUI-based wizard.
|Resources for Generating CSRs:|
Java Keytool (Tomcat & other Java-based servers)
OpenSSL (Use for Apache & NGINX)
-----BEGIN CERTIFICATE REQUEST----- MIICwjCCAaoCAQAwfTELMAkGA1UEBhMCVUsxFzAVBgNVBAMMDmdsb2JhbHNpZ24u Y29tMRIwEAYDVQQHDAlNYWlkc3RvbmUxGzAZBgNVBAoMEkdNTyBHbG9iYWxTaWdu IEx0ZDENMAsGA1UECAwES2VudDEVMBMGA1UECwwMS2VpciBUZXN0aW5nMIIBIjAN BgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAoYEz3F49JI+J/13Xr+uH+Bb89sav PaXKjkzwUu0w6MU/MATRT9iqdBJ5ifecTZvlr/KUorFnRTBmBOXCi7n8xKOIhgsP MTNUnr0wGPeJnU0PfrO67ylPKDIOKTXjcpm9g2kLRu/xbkxnBWMwezwOMJd4DzzZ RZg4byIXv+lRTMCqUy+yHNJsVj4SUmi9X7gUyCK7X4THR/ez0XChoYOIJXFdceIn RLFpXN0a68pOHTsZV3I+dD56Zt20EMtmLooovJxEnmXBHdgHx8QjjsG5W1wLZmaR yMHc1/ZufH9XuOnoH+KikKegqc9VOaW7iC9TLStt/KH2hOi1mIwoWwedcQIDAQAB oAAwDQYJKoZIhvcNAQELBQADggEBAA8CVf+d4p+Tpsr0mKkfD8LrSwYgTF39CGNs vUDopzbnrrSR6CKT2nqGDLkXVSsjeCv0mi0v54XWsYexffvjgQ97twfDvwStp4vA LfQ7arDMDwqwQ0af1MvI9Qu8z/Wci7l0XnBfx2jj9ojC/Pu2BIx1t3e9MAOoZaTW raDibu+fN1DypQXmuWJjIr0O1qHogNaheRnHgT7eJ38I6V43QI94rq95rEJM80QH oh8T+0tAIUxz8ZlxiIhHl+EPlGpnez+fNiTo23lwqriicRW1eRMT3uNJqfLjmzaj ndn3KyCF2E/0Him9FCG1cAsIjTEjIzqmdzqr/ffm9AUXlaPOtT4= -----END CERTIFICATE REQUEST-----
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