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Open chrome browser (this step might work with other browsers too) settings > show advanced settings > HTTPS/SSL > manage certificates Import the .txt in step 1. Select and export that certificate in Base-64 encoded format. Save it as .cer. Now you can use keytool or Portecle to import it to your java keystore.
.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
A quick way to determine the type of a file on Linux is to use the file command. Example against a file containing PEM encoded private key: file mypemfile. Output: mypemfile: PEM RSA private key. Example against an OpenSSH file containing a private key: file id_rsa. Output: id_rsa: OpenSSH private key.
On the wire, during a TLS connection, DER is used. It doesn't really matter what the Windows Certificate store uses internally, it should be able to import/export DER or PEM/Base64 certificates. Certificate "types" is a wider topic than the DER/base64 format. Most certificates used for SSL/TLS are X.509 certificates. Then you get usage profiles.
Here is one case that worked for me if we need to convert .cer to .crt, though both of them are contextually same. Generate crt file: openssl pkcs12 -in identity.p12 -nokeys -out mycertificate.crt. Generate key file: openssl pkcs12 -in identity.p12 -out mycertificate.key -nodes -nocerts.
-----END CERTIFICATE----- This is a certificate in pem format which is a wrapper over public key. A Certificate is supposed to be public and can be distributed, but private key (as the name suggest) is supposed to be kept secret. So a certificate can never contain a private key. You mentioned, you have a ´.pem´ file too. What is it's content?
You can also create a certificate based on .pvk private key file. .pfx - stands for personal exchange format. It is used to exchange public and private objects in a single file. A pfx file can be created from .cer file. Can also be used to create a Software Publisher Certificate.
Yes, PEM format, but by convention, the one that says "PRIVATE KEY" is usually named .key. According to this answer, .crt keeps a signed certificate, whereas .csr is the certificate signing request. Also, .pem just indicates that the content (can be a key, certificate, ...) is Base64 encoded.
People used to say -. cer - certificate stored in the X.509 standard format. This certificate contains information about the certificate's owner... along with public and private keys. pfx - stands for personal exchange format. It is used to exchange public and private objects in a single file. A pfx file can be created from .cer file.
All you don't know is whether those certificate & private key are RSA or DSA. You can check this by extracting the certificate (s), and then examine them: openssl pkcs12 -in mycert.p12 -clcerts -nokeys -out mycert.crt. openssl x509 -in mycert.crt -text. The text output of the openssl x509 command should include a Subject Public Key section ...