Bootgen has the capability of generating RSA keys. Alternatively, you can create keys using external tools such as OpenSSL. Bootgen creates the keys in the paths specified in the BIF file.
The figure shows the sample RSA private key file.
Figure 1. Sample RSA Private Key File
Note: The public component is usually
referred with the extension .pub. This can be
extracted from the private key which has both the public and private components. The
private keys usually have extension .pem. To
generate public key components use ppkfile/spkfile instead of pskfile/sskfile in the
above example.
BIF Example
A sample BIF file, generate_pem.bif:
generate_pem:
{
[pskfile] psk0.pem
[sskfile] ssk0.pem
}Command
The command to generate keys is, as follows:
bootgen -generate_keys pem -arch zynqmp -image generate_pem.bif