Title:
COMPUTER ACCESSING DEVICE
Document Type and Number:
Japanese Patent JPS54136205
Kind Code:
A
Abstract:
A communications link between a computer and a remote user is effected by a portable access unit which generates a nonrecurring access code which is a function of a password and a pseudorandomly generated number. The access code is transmitted and compared with an access code generated by a computer access controller. In addition to the access code, the pseudorandomly generated number provides an encryption key which is not transmitted but corresponds to a mating encryption key generated at the controller. The mating encryption keys are utilized to set up data transmission enciphering/deciphering networks successive links are established by incremented pseudorandomly generated access codes.
Inventors:
FURANKU TOOMASU CHIETSUKU JIYU
Application Number:
JP3826679A
Publication Date:
October 23, 1979
Filing Date:
March 30, 1979
Export Citation:
Assignee:
PITNEY BOWES INC
International Classes:
H04K1/00; G06F21/12; G06F21/14; G06F21/31; G07F7/10; H04L9/32; (IPC1-7): G06F15/00; H04K1/00; H04L9/00; H04L13/00
Domestic Patent References:
| JPS516632A | 1976-01-20 |