Encrypt the password using a public key: $ openssl rsautl -encrypt -pubin -inkey /.ssh/idrsa.pub.pkcs8 -in secret.txt.key -out secret.txt.key.enc The recipient can decode the password using a matching private key: $ openssl rsautl -decrypt -ssl -inkey /.ssh/idrsa -in secret.txt.key.enc -out secret.txt.key Package the Encrypted File and Key. Say I have previously created a private/public key combination, and decided at the time to not protect the private key with a password. If I later decide to 'beef up' security and use a password. To improve security, create your own private key and a certificate instead of using the self-signed ones that are available in License Metric Tool by default. You can use openSSL to create a private key and a certificate signing request (CSR) that can be transformed into a certificate after it is signed by a certificate authority (CA). Openssl pkcs8 -in key.pem -topk8 -out enckey.pem Convert a private key to PKCS#8 using a PKCS#12 compatible algorithm (3DES).
In this short article I will show you how to store private key in pkcs8 format in java and again read back the stored key in java.PKCS #8 defines a standard syntax for storing private key information. There are 2 ways we can store private key in pkcs8 format.
1) unencrypted key
2) encrypted key
Openssl Generate Rsa Pkcs8 Private Key
I will create both types of keys in java and store them in file. After that I will read them from file and create privatekey java object from stored file. We are using bouncy castle API for this program.1) Create pkcs8 key
Code to create pkcs8 :
So you can see that for unencrypted key we do not provide any encryptor object which contains information about algorithm, password etc. While creating encrypted key we do provide that details.
As an outcome of this program we will have below 2 files in our file system:
Lets open them in notepad and check the difference.
encrypted key file:unencrypted key file:
You can see the difference in start and end tag of both the files.
2) Read pkcs8 key
Code to read pkcs8:
output:
So here you can after generating back the private key object from file we have compared them for equality and they returned true because they have been created from same private key and stored in file.
That's it for now...
Please post your comments and doubts!!!