CreateKeyStore create a keystore structure.

GetPrivatekeyFromKeystore decrypts the encrypted private key based on the user's password and necessary parameters.

MakeKeyStore encrypts the incoming password and private key to generate a json file in the program directory and returns the filename.

ReadJSON is used to read a json file with the specified file name and return the keystore data structure.

CipherParams is used to store the necessary parameters required by the aes-128-ctr encryption algorithm.

JSON is used for json encoding storage and local.

KdfParam is used to store the parameters used by the PBKDF2 algorithm to generate the certificate.