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Openssl view certificate3/6/2023 Openssl pkcs7 -print_certs -in your_pkcs7_certificate.p7b -out your_pem_certificates.pem Openssl crl2pkcs7 -nocrl -certfile your_pem_certificate.crt -out your_pkcs7_certificate.p7b -certfile CA-bundle.crt To convert the certificates into different formats, you can use the following commands: The file extensions are: *.p12 and *.pfx. Usually, PFX certificates are used on Windows machines, and are essential for transferring the certificate from one Windows server to another. Optionally, the file can include the CA chain certificates as well. Is a file in binary format that contains the certificate with a corresponding private key and is protected by a password. The certificate in PKCS#7 format can be retrieved from Comodo CA (now Sectigo CA), if you choose ‘Microsoft Internet Information Server’ as a server type during the certificate activation. The most common extensions are: *.p7b, *.p7s, *.cer. If you open a PKCS#7 file in a text editor, you can see the encoded text between -BEGIN PKCS7- and -END PKCS7- tags. Is another certificate with Base64 encoding that is used generally by Windows and Java-based Tomcat servers, and may contain domain end-entity certificate and CA chain certificates. Comodo CA (now Sectigo CA) sends out their certificates in PEM, if any server type except ‘Microsoft Internet Information Server’ (Microsoft IIS) is chosen during the certificate activation. PEM certificates may have the following file extensions: *.pem, *.crt, *.cer. It is the most widespread certificate format, which is mostly used by Linux-based servers, like Apache, Nginx, and by the majority of webhosting control panels (cPanel, Plesk, DirectAdmin, WebMin, etc.). Is a base64 encoded certificate placed between the headers -BEGIN CERTIFICATE- and -END CERTIFICATE. On the whole, we can differentiate the following certificate file formats: In this article we will talk about the file formats which differ based on encoding rules. In fact the certificates we provide are issued in x.509 format which is the version of ASN.1 file encoding standard. In order to convert the certificates from one format to another, you can use OpenSSL package generally available on Linux machines. How to convert certificates into different formats using OpenSSLĭifferent servers and control panels may require SSL certificates in different file formats.
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