A CSR file contains a request for signing a digital certificate. It is an encrypted text block with data identifying the applicant - country, state, organization, domain, email, and public key. Public...
A CSR file contains a request for signing a digital certificate. It is an encrypted text block with data identifying the applicant – country, state, organization, domain, email, and public key. Public and private keys generate CSR files. The public key goes in the file. The private key digitally signs it.
CSR files confirm websites’ identities for the Certification Authority. The CSR originates on the server where the SSL/TLS certificate will install. Applications like OpenSSL and Microsoft IIS open CSRs.
The CSR file falls under Web Files. Its format developed originally for OpenSSL. Programs like OpenSSL often modify or read CSR Certificate Signing Request Format files. Tools to open CSR files exist. OpenSSL handles CSR files on some operating systems. The CSR file has recognition by operating systems to open its content type.
OpenSSL
Microsoft IIS
Apache HTTP Server