noted: I need a unique answer with a focus with the third question must do a flow diagram please don't publish this answer for the public, send the answer in private

$1-$Distinguish between Hash Function and Cryptographic Hash function?

$2-$Explain the significance of Cryptographic Hash algorithm on comparing with encryption algorithms.

$3-$Explain how the Cryptographic hash algorithm is used for storing passwords in Unix operating system with flow diagram?

$4-$What is the mathematical background of ElGamal Digital Signature Scheme?

$5-$Present a detailed comparison of the RSA, ElGamal, Schnorr and Digital Signature schemes on basis of their process?

$6-$Using the RSA scheme, let p $=809,$ q $=751,$ and d $=23.$ Calculate the public key e$.$ Then,

a$)$ Sign and verify a message with M$1=100.$ Call the signature S$1.$

b$)$ Sign and verify a message with M$2=50.$ Call the signature S$2.$

c$)$ Show that if M $=$ M$1$ M$2=5000,$ then S $=$ S$1$ S$2$