Encryption display card

• US 20020019939A1
• Filed: 12/12/2000
• Published: 02/14/2002
• Est. Priority Date: 12/20/1999
• Status: Abandoned Application

• Current Assignee: Hiroyasu Yamamoto, Misako Koibuchi, Takakuni Shimizu
• Original Assignee: Hiroyasu Yamamoto, Misako Koibuchi, Takakuni Shimizu
• Inventors: Shimizu, Takakuni, Koibuchi, Misako, Yamamoto, Hiroyasu
• Application Number:
  US09/733,925
• Publication Number:
  US 20020019939A1
• Time in Patent Office: Days
• US Class Current: 713/172
• CPC Class Codes: G06Q 20/341 Active cards, i.e. cards including their own processing means, e.g. including an IC or chip
• CPC Class Codes: G06Q 20/40975 using encryption therefor
• CPC Class Codes: G07F 7/1008 Active credit-cards provided with means to personalise their use, e.g. with PIN-introduction/comparison system

Abstract

There is provided an easy-to-carry encryption display card which can generate and store a random encryption and display the encryption when the user wishes to check the encryption. The encryption display card has a main body of a thin plate and includes: a control circuit 2 for switching between two modes including an encryption registration mode and an encryption search mode; input keys 7 for accepting an input of label data; an encryption generating unit 22 for, upon input of the label data in the encryption registration mode, generating a random encryption for a label equivalent to the label data; a RAM 3 for storing the encryption in a one-to-one correspondence with the label; and a display panel 6 for, upon input of the label data in the encryption search mode, displaying the encryption for the label equivalent to the label data. A random encryption is generated by merely inputting the label data when registering an encryption, and the target encryption is displayed by merely inputting the label data when searching the encryption.

Claims

1. An encryption display card characterized by comprising:

a main body (9) of a thin plate;

mode switching means (2) for switching between two modes including an encryption registration mode and an encryption search mode;

label input means (7) for accepting an input of label data;

encryption generating means (22) for, upon input of the label data through said label input means in the encryption registration mode, generating a random encryption for a label equivalent to the label data;

encryption storage means (3) for storing the encryption generated by said encryption generating means in a one-to-one correspondence with the label; and

display means (6) for, upon input of the label data through said label input means in the encryption search mode, displaying the encryption corresponding to the label equivalent to the label data with reference to said encryption storage means.

3. The encryption display card according to claim 1 or 2, wherein said encryption storage means (3) is capable of storing more than one encryption.

4. The encryption display card according to any preceding claim, wherein said encryption generating means (22) generates a random encryption by using a natural random number or a pseudo-random number.

5. The encryption display card according to any preceding claim, further comprising:

password input means (7) for accepting an input of operation enable password data; and

personal identification authenticating means (21) for, upon input of the operation enable password data through said password input means, storing the operation enable password data in password storage means (3) as an operation enable password when said encryption display card is used for a first time, said personal identification authenticating means also for, when said encryption display card is used for a second time or beyond, enabling operations thereafter only if input operation enable password data coincides with the operation enable password stored in said password storage means.

2. An encryption display card characterized by comprising:

a main body (9) of a thin plate;

mode switching means (2) for switching between two modes including an encryption registration mode and an encryption search mode;

label input means (7) for accepting an input of label data;

digit number specifying means (7) for accepting a specific digit number of an encryption;

encryption generating means (22) for, when the digit number of an encryption is specified through said digit number specifying means upon input of the label data through said label input means in the encryption registration mode, generating a random encryption of a specified digit number for a label equivalent to the label data;

encryption storage means (3) for storing the encryption generated by said encryption generating means in a one-to-one correspondence with the label; and

display means (6) for, upon input of the label data through said label input means in the encryption search mode, displaying the encryption corresponding to the label equivalent to the label data with reference to said encryption storage means.