Crypt::Keys::Private::RSA is a Perl module with RSA private key drivers.
All Crypt::Keys::Private::RSA drivers (no matter the encoding) will return a data structure containing the same format. That structure will be a reference to a hash, containing a key Data; the value of the key Data is another hash reference, which contains the actual key data. This hash reference has the following keys:
These fields should all be self-explanatory. They are standard parts of a private RSA key.
Equal to d mod (p-1).
Equal to d mod (q-1).
Equal to inverse of q mod p.
These last three fields are used in the Chinese Remainder Theorem.