118 lines
5.7 KiB
Plaintext
118 lines
5.7 KiB
Plaintext
Bakalarska praca
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Meno studenta: Tomas Lukac
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Veduci BP: prof. Ing. Milos Drutarovsky CSc.
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Skola: KEMT FEI TUKE
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Datum poslednej upravy: 6.4.2020
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Verzia: 0.1
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----------------------------
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Zoznam zdrojovych suborov
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certifikaty
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autorita
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|__autorita_ecc.pem
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|__autorita_ecc.key
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|__autorita_rsa.pem
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|__autorita_rsa.key
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server
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|__server_ecc.pem
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|__server_ecc.key
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|__server_rsa.pem
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|__server_rsa.key
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klient
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|__klient_ecc.pem
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|__klient_ecc.key
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|__klient_rsa.pem
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|__klient_rsa.key
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kniznica
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|__komunikacia.h
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|__komunikacia.c
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|__kryptografia.h
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|__kryptografia.c
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tcpip_kanal
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|__klient.c
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|__server.c
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|__Makefile
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rs232_kanal
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|__klient.c
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|__klient.txt
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|__server.c
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|__server.txt
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|__Makefile
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Opis aplikacie
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Realizuje zabezpecenu vymenu sprav medzi klientom a serverom a autentizaciu servera klientom vyuzitim kniznice WolfSSL. Ako prvu je
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potrebne spustit aplikaciu na strane servera s prepinacom port s hodnotou, ktora urcuje ake bude cislo portu, na ktorom bude server
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cakat na prichadzajucu komunikaciu, v pripade rs232 kanala je potrebne uviest cislo serioveho rozhrania (hodnoty: https://www.teuniz.net/RS-232/).
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Dalsim potrebnym prepinacom je bud -n (nacitanie certifikatov z adresaru /certifikaty) alebo -g (vygenerovanie a podpis certifikatov
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pomocou certifikatu a kluca autority, ktore sa nachadzaju taktiez v adresari /certifikaty).Sukromne kluce a certifikaty su ulozene vo formate DER.
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Nasledne je potrebne spustit aplikaciu na strane klienta, ktora pri pouziti kanalu TCP_IP okrem predchadzajucich parametrov vyzaduje parameter
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pre ip adresu: -ip adresa. Po vytvoreni zabezpeceneho prenosoveho kanalu sa klient pokusi odoslat subor, ktoreho lokacia mu bola predana pri
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spusteni pomocou parametru -s subor. Pred samotnym poslanim klient najprv vyhotovi kontrolny sucet suboru, ktory odosle po zabezpecenom kanali
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serveru. Ten po prijati suboru overi ci sa zhoduje prijaty kontrolny sucet s jeho, ktory vyhotovil po prijati suboru. Ak pri prijati suboru
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nenastala chyba a kontrolne sucty sa zhoduju server oznami ze prijem bol uspesny a dalej caka na komunikaciu.
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Klientsky program po odoslani suboru ukonci svoju cinnost.
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Generovanie certifikatov RSA (OpenSSL)
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openssl genrsa -out autorita_rsa.key 2048
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openssl req -x509 -new -nodes -key autorita_rsa.key -sha256 -days 1825 -out autorita_rsa.pem
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openssl x509 -outform pem -in autorita_rsa.pem -out autorita_rsa.crt
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openssl genrsa -out server_rsa.key 2048
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openssl req -new -key server_rsa.key -out server_rsa.csr
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openssl x509 -req -in server_rsa.csr -CA autorita_rsa.pem -CAkey autorita_rsa.key -CAcreateserial -out server_rsa.pem -days 1825 -sha256
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openssl x509 -outform pem -in server_rsa.pem -out server_rsa.crt
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openssl genrsa -out klient_rsa.key 2048
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openssl req -new -key klient_rsa.key -out klient_rsa.csr
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openssl x509 -req -in klient_rsa.csr -CA autorita_rsa.pem -CAkey autorita_rsa.key -CAcreateserial -out klient_rsa.pem -days 1825 -sha256
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openssl pkcs12 -inkey klient_rsa.key -in klient_rsa.pem -export -out klient_rsa.pfx
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Generovanie certifikatov ECC (OpenSSL)
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openssl ecparam -genkey -name prime256v1 -out autorita_ecc.key
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openssl req -x509 -new -nodes -key autorita_ecc.key -sha256 -days 1825 -out autorita_ecc.pem
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openssl x509 -outform pem -in autorita_ecc.pem -out autorita_ecc.crt
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openssl ecparam -genkey -name prime256v1 -out server_ecc.key
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openssl req -new -key server_ecc.key -out server_ecc.csr
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openssl x509 -req -in server_ecc.csr -CA autorita_ecc.pem -CAkey autorita_ecc.key -CAcreateserial -out server_ecc.pem -days 1825 -sha256
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openssl x509 -outform pem -in server_ecc.pem -out server_ecc.crt
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openssl ecparam -genkey -name prime256v1 -out klient_ecc.key
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openssl req -new -key klient_ecc.key -out klient_ecc.csr
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openssl x509 -req -in klient_ecc.csr -CA autorita_ecc.pem -CAkey autorita_ecc.key -CAcreateserial -out klient_ecc.pem -days 1825 -sha256
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openssl pkcs12 -inkey klient_ecc.key -in klient_ecc.pem -export -out klient_ecc.pfx
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Navod na prelozenie a spustenie (Linux)
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1. prelozenie kniznice wolfssl s podporou OpenSSL (v adresari s kniznicou)
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./configure --enable-opensslextra --enable-certgen --enable-keygen
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make
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sudo make install
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2. prelozenie programov (v podadresari tcpip_kanal alebo rs232_kanal)
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make all
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3. spustenie (prenosovy kanal TCP/IP)
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./server -port port -n rsa|ecc
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./server -port port -g rsa|ecc
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./klient -ip 127.0.0.1 -port port -n rsa|ecc -s subor
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./klient -ip 127.0.0.1 -port port -g rsa|ecc -s subor
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4. spustenie (prenosovy kanal RS232)
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./server -port seriove_rozhranie -n rsa|ecc
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./server -port seriove_rozhranie -g rsa|ecc
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./klient -port seriove_rozhranie -n rsa|ecc -s subor
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./klient -port seriove_rozhranie -g rsa|ecc -s subor
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Navod na prelozenie a spustenie (Windows)
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1. skopirovanie potrebnych dll z adresara /wolfssl/64bit_kniznice/ , resp. /wolfssl/32bit_kniznice/
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do podadresara tcpip_kanal, resp. rs232_kanal
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a) wolfssl.dll -> kniznica wolfssl
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b) vcruntime140.dll -> visual c++ runtime
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c) api-ms-win-crt-runtime-l1-1-0.dll
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2. prelozenie programov (v podadresari tcpip_kanal alebo rs232_kanal)
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make all
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3. spustenie (prenosovy kanal TCP/IP)
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server -port port -n rsa|ecc
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server -port port -g rsa|ecc
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klient -ip 127.0.0.1 -port port -n rsa|ecc -s subor
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klient -ip 127.0.0.1 -port port -g rsa|ecc -s subor
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4. spustenie (prenosovy kanal RS232)
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server -port seriove_rozhranie -n rsa|ecc
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server -port seriove_rozhranie -g rsa|ecc
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klient -port seriove_rozhranie -n rsa|ecc -s subor
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klient -port seriove_rozhranie -g rsa|ecc -s subor
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