What’s the difference between DER and PKCS#12 formats? [closed]
Both are binary files and both can store digital certificates and private keys.
Continue reading What’s the difference between DER and PKCS#12 formats? [closed]
Category Archives: der
converting just a public key from PEM to DER using openssl
There are plenty of instructions for converting PEM certificates to DER which also pop up when looking for ways to convert public keys.
These are among the options offered:
openssl x509 -in cert.pem -out cert.der
openssl rsa -in cert.pem -… Continue reading converting just a public key from PEM to DER using openssl
Generating a DER-encoded DSA public key of a particular file size
I am reverse engineering a binary that contains a raw, DER-encoded X.509 certificate containing a DSA public key. I want to replace this certificate with one that I have generated so that I have access to the private key.
Due to this certi… Continue reading Generating a DER-encoded DSA public key of a particular file size
OpenSSL encrypt DER format private key
When converting a password-protected PEM/PKCS1-encoded private key to DER format one is not able to encrypt the key, OpenSSL automagically asks for the password and writes the plain-text key in the output file.
However, I understand that P… Continue reading OpenSSL encrypt DER format private key
How to add subject alternative name when converting PEM certificate to DER format?
Is it possible to add a subject alternative name when converting PEM certificate to DER format.
openssl x509 -outform der -in Certificate.pem -out Certificate.der -extensions SAN -subject-alternative-name ‘alternative name’
If possible,… Continue reading How to add subject alternative name when converting PEM certificate to DER format?