Convert public key and private key to Java objects

In addition to supporting generating public key and private key, Java also supports us to convert these public key and private key files to Java objects. We just need to know the data format used in these files!

First, you need to read these files and convert their contents to byte arrays. My example with private key is as follows:

Then, depending on the data format of the public key and private key files, we use the appropriate KeySpec objects to read the contents of these files.

For example, my public key uses the X.509 format and the private key uses the PKCS#8 format, I will code as follows:

For public key:

For private key:

My entire code for the public key is as follows:

Result:

Convert public key and private key to Java objects

and private key:

Result:

Convert public key and private key to Java objects

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