need 1 amp 2 in different docs with 2 3 references each in apa citation format no plagiarism please 2

1)

a). Using the Web or other resources, write a brief paper about RSA, its history, its methodology, and where it is used.

b). Send a brief message (fifteen words minimum) using the Caesar Cypher.

(must be in 500-600 words)

2)

What purpose does a performance appraisal serve?

What are some key ideas to remember when conducting a performance appraisal?

What best practices have you seen?

What would you change and why?

(must be in 500-600 words)