NODE 58ee0850Re: Secure comm program, Sockets + LINK
jpp@markv.comSat, 10 Jul 93 19:59:58 PDT
Andrew Betty
KCA=Initial key K0 in s/w KCB=Initial key K0 in s/w
KCB=Initial key K0 in s/w KCA=Initial key K0 in s/w
KCi= KCA + KCB KCi= KCA + KCB
KCo= KCA + KCB KCo= KCA + KCB
Use KCi for reading, and Use KCi for reading, and
KCo for writeing to the KCo for writeing to the
chanell for a while chanell for a while
Requset a new sesion key Requset a new sesion key
DES(KCo,RSA(BP,K1A)) KRB=DES(KCo,RSA(AP,K1B))
\_____________ ______________/
KCi=KCA+KCB \ / KCi=KCB+KCA
KCo=K1A+KCB X KCo=K1B+KCA
_____________/ \______________
/ \
Sevice new key request
TA=DES(KCi,KRB)
K1B=RSA(AS,TA)
KCi=K1A+K1B