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What are the differences between . pem, . cer, and . der? 228 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 cannot read DER formatted certificate - Stack Overflow Update I have based my solution on this and this answers Background I am trying to read a DER formatted certificate file and attempt to verify it My cert is in DER format I have confirmed t
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
Convert Certificate in DER or PEM to pkcs12 - Stack Overflow openssl x509 -inform der -in certificate der -out certificate pem and many speak of openssl pkcs12 -export -out certificate p12 -inkey *** -in *** -inform der -certfile *** to convert, but this command needs files that I could not get In short I have a file that contains all necessary information to convert to pkcs12
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
rsa - Read private key in DER format java - Stack Overflow Well finally looking at this thread Encrypting with RSA private key in Java found the answer First I had to unprotect the key, as follows openssl pkcs8 -inform DER -in myDERPassProtectedPrivate key -outform PEM -out myPEMPrivate key it asked me for my password and then I had the file myPEMPrivate key Once done this proceed to get rid of the password protecting the key like follows openssl