DONE BY Ng Jia Yi 1003696 Alex Wang 1003474

RUN CP1 javac ServerWithCP1.java && java ServerWithCP1 javac ClientWithCP1.java && java ClientWithCP1 100.txt 1000.txt pdf1.pdf

CP2 javac ServerWithCP2.java && java ServerWithCP2 javac ClientWithCP2.java && java ClientWithCP2 100.txt 1000.txt pdf1.pdf

VERIFY md5 100.txt recv_100.txt

cacse.crt

• CA's certificate
• extract this to get CA's public key example.org.key
• server's private key in plain text
• generated with openssl example.org.pubkey
• server's public key in plain text
• generated with openssl example.org.csr
• server's certificate signing request
• contains everything about server's private key, public key example-19fb0430-7c8f-11ea-ae9d-89114163ae84.crt
• signed server's public key
• signed by CA
• should be sent to clients
• client able to verify with CA's public key
• client to extract this to get server's public key private_key.der
• server's private key in binary format
• to be read by java security library