Modify only Subject(CN) in PEM
I have .key file (RSA PRIVATE KEY) and .pem file (CERTIFICATE) , and I want to change only the CN of Subject.
What is the easy way to do that ?
Category Archives: pem
Unable to add Zscaler certificates to Ubuntu trusted store
I have a set of three certificates to form a trusted chain from Zscaler but I cannot install them in the Ubuntu trusted store.
The three corresponding certificates are there for reference:
Zscaler Intermediate Root CA (zscloud.net) (t)
Z… Continue reading Unable to add Zscaler certificates to Ubuntu trusted store
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
How do I create a pem file that I can use in a console app to authenticate to an SFTP service?
I’m writing a little program that downloads some basic data, consolidates it into a CSV and drop it to an SFTP server. I’m told that I need to generate a pem file. My search online suggests that pem is a private/public key pairing and that… Continue reading How do I create a pem file that I can use in a console app to authenticate to an SFTP service?
How to save AES Key in PEM file
I’d like to store a private symmetric key, aes-256, in a PEM file.
My understanding is that usually these types of keys are derived using RSA/EC DH and there’s no need to save them, but in my application I do need to save them and share se… Continue reading How to save AES Key in PEM file
When I run this command in OpenSSL, it also creates a file called `serial_number.pem`
Note that 00 in 00.pem is the serial number of the certificate.
When I run this command, it also creates a file called 00.pem in the new certs directory.
The 00.pem has the same content as enduser-example.com.crt.
Here is the command:
open… Continue reading When I run this command in OpenSSL, it also creates a file called `serial_number.pem`
What is LS0… encoding of a PKI certificate?
I am looking through a set of PKI certificates and key strings that are specified in a kubernetes yaml file. They are used for testing. Some of the strings are keyed (as in yaml key-value) as crt.pem. All of the strings have the following … Continue reading What is LS0… encoding of a PKI certificate?
Is it possible to decode an encoded PEM SSL certificate without OpenSSL in CLI?
It is said that PEM certificates are encoded with ASCII (Base64), excluding labels.
Let’s take this certificate as an example.
—–BEGIN CERTIFICATE—–
MIIEMjCCAxqgAwIBAgIBATANBgkqhkiG9w0BAQUFADB7MQswCQYDVQQGEwJHQjEb
MBkGA1UECAwSR3JlYX… Continue reading Is it possible to decode an encoded PEM SSL certificate without OpenSSL in CLI?
Missing DEK-Info header when converting from P12 to PEM using OpenSSL 2.8.3
I’m using openssl to convert an exported *.p12 file into a *.pem file that has a certificate and an encrypted private key.
The P12 file was exported with a password, this is the command that I’m using to generate the PEM file:
openssl pk… Continue reading Missing DEK-Info header when converting from P12 to PEM using OpenSSL 2.8.3
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?