What are the differences between . pem, . cer, and . der? 227 pem, cer and der are all file extensions for files that may contain a X 509 v3 certificate The der extension DER is the method of encoding the data that makes up the certificate DER itself could represent any kind of data, but usually it describes an encoded certificate or a CMS container
openssl der files importing into java keystore - Stack Overflow convert your certificate in a DER format : openssl x509 -outform der -in certificate pem -out certificate der import into the keystore keytool -import -alias your-alias -keystore cacerts -file certificate der This brings me now to my question Is it possible to import the private and public key into the keystore without a certificate?
ssl : Unable to load certificate - Stack Overflow The problem is not PEM vs DER but that you are using a certificate request in a place where a certificate is expected This is clearly shown by the PEM header -----BEGIN CERTIFICATE REQUEST----- To show the content of a certificate request use openssl req -in CSR csr -text To show the content of a certificate use openssl x509 -in CERT crt -text
How to verify DER certificate with openssl? - Stack Overflow openssl x509 -inform der -in \leaf cert cer -outform pem Converts the DER certificate to PEM format with the output to the stdout openssl verify -CAfile CA ca crt Verifies the PEM certificate from stdin And you combine the two with the pipe '|' command which pipes the stdout from the first command to the stdin for the second command
How do I decode a DER encoded string in Java? - Stack Overflow I'm trying to read a custom extension from a digital certificate I know the value is a GeneralString encoded in DER Is there an easy way to correctly decode it and get a Java String? I tried the