If your server/device requires a different certificate format other than Base64 encoded X.509, a third party tool such as OpenSSL can be used to convert the certificates into the appropriate format.
OpenSSL is an open source tool that is not provided or supported by Microsec
For information on OpenSSL please visit: www.openssl.org
The PEM format is the most common format used for certificates. They are Base64 encoded ASCII files.
Extensions used for PEM certificates are cer, crt, and pem.
Downloaded cer extension files can be PEM or DER files
The DER format is the binary form of the certificate.
DER formatted certificates do not contain the "BEGIN CERTIFICATE/END CERTIFICATE" statements.
DER formatted certificates most often use the '.der' extension.
Convert x509 to PEM
openssl x509 -in certificatename.cer -outform PEM -out certificatename.pem
Convert PEM to DER
openssl x509 -outform der -in certificatename.pem -out certificatename.der
Convert DER to PEM
openssl x509 -inform der -in certificatename.der -out certificatename.pem
Convert PEM to P7B
Note: The PKCS#7 or P7B format is stored in Base64 ASCII format and has a file extension of .p7b or .p7c.
A P7B file only contains certificates and chain certificates (Intermediate CAs), not the private key. The most common platforms that support P7B files are Microsoft Windows and Java Tomcat.
openssl crl2pkcs7 -nocrl -certfile certificatename.pem -out certificatename.p7b -certfile CACert.cer
Convert PKCS7 to PEM
openssl pkcs7 -print_certs -in certificatename.p7b -out certificatename.pem
Convert pfx to PEM
Note: The PKCS#12 or PFX format is a binary format for storing the server certificate, intermediate certificates, and the private key in one encryptable file. PFX files usually have extensions such as .pfx and .p12. PFX files are typically used on Windows machines to import and export certificates and private keys.
openssl pkcs12 -in certificatename.pfx -out certificatename.pem
Convert PFX to PKCS#8
Note: This requires 2 commands
STEP 1: Convert PFX to PEM
openssl pkcs12 -in certificatename.pfx -nocerts -nodes -out certificatename.pem
STEP 2: Convert PEM to PKCS8
openSSL pkcs8 -in certificatename.pem -topk8 -nocrypt -out certificatename.pk8
Convert P7B to PFX
Note: This requires 2 commands
STEP 1: Convert P7B to CER
openssl pkcs7 -print_certs -in certificatename.p7b -out certificatename.cer
STEP 2: Convert CER and Private Key to PFX
openssl pkcs12 -export -in certificatename.cer -inkey privateKey.key -out certificatename.pfx -certfile cacert.cer
| Bejegyzés azonosító | 118 |
| Kategória | SSL tanúsítványok |
| Hozzáadás dátuma | 2020-07-24 12:37:20 |
| Megtekintések száma | 1059 |
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