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CSR Decoder

CSR Decoder parses a Certificate Signing Request (CSR) in PEM format, decodes the DER-encoded ASN.1 structure, and shows the subject fields, public key details, and signature algorithm.

Example commands

Windows (cmd)

                      openssl req -new -newkey rsa:2048 -nodes -keyout server.key -out server.csr

Windows (PowerShell)

                      Get-Content .\server.csr | openssl req -noout -text

Linux (OpenSSL)

                      openssl req -in server.csr -noout -text -verify