Title:
IMPROVED METHOD AND DEVICE FOR SECURING SAFETY OF DATA TRANSMISSION
Document Type and Number:
Japanese Patent JPS5661853
Kind Code:
A
Abstract:
A method and apparatus are provided for improving the security of data transmissions between stations and for controlling secured transactions from remote locations in a data-transfer system. The method and apparatus obviate the need for transmitting user-identification information such as personal identification number (PIN) from station to station, e.g., from the station utilized by the user to enter his PIN and initiate a transaction, to the station that processes the transaction. Also, for added security, the method and apparatus provide for encryption (encoding) and decryption (decoding) of data during a transaction using encryption and decryption keys produced from different (independent) PIN's. The apparatus includes at least one irreversible algorithm module, a random number generator and at least one data file (e.g., disc or magnetic tape storage). The apparatus also includes a comparator or, alternatively, an encoding algorithm module and a matching decoding algorithm module. In addition, a data-transfer system obviates the need for paired encryption/decryption modules on a data link while nevertheless maintaining a high level of security in the data transferred. This facilitates remote control of data transfer between locations within the system, enables use of conventional data links, and permits convenient changes of and additions to the files of stored codes for the system without compromising the security of data transfers or of identifying codes for authorized individuals. An encoding center may be established which can be contacted by telephone and supplied with the PIN of a user and which can produce an encoding word that is received by the user via the telephone for his subsequent use in completing a telephone-oriented transaction.
Inventors:
MAACHIN EMU ATARA
Application Number:
JP14182380A
Publication Date:
May 27, 1981
Filing Date:
October 09, 1980
Export Citation:
Assignee:
ATALLA TECHNOVATIONS
International Classes:
G07F7/10; H04L9/00; H04K1/00; H04L9/32; (IPC1-7): H04K1/00; H04L9/00