Cryptographic process involve algorithms and increasingly complex keys.

$[2$ Crypto Analysis is the process of analyzing available information

in an attempt to return the encrypted message to its

original form.

$[3$ Symmetric$-$key algorithms is a special mathematical function that performs one$-$key encryption.

$[4]\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_($not to be confused with a digital certificate$)$ is a

mathematical technique used to validate the authenticity

and integrity of a message, software or digital document.