REMOTE ENCRYPTION METHOD AND CRYPTOGRAPHIC CENTER

• US 20170093816A1
• Filed: 11/30/2015
• Published: 03/30/2017
• Est. Priority Date: 09/24/2015
• Status: Abandoned Application

• Current Assignee: Hon Hai Precision Industry Co., Ltd.
• Original Assignee: Hon Hai Precision Industry Co., Ltd.
• Inventors: KUO, CHIN-PIN, TSAI, TUNG-TSO, LIN, JUNG-YI, CHUANG, CHIH-YUAN, LU, CHIH-TE, TU, TSUNG-YUAN, CHEN, YU-CHENG
• Application Number:
  US14/953,613
• Publication Number:
  US 20170093816A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 21/602 Providing cryptographic facilities or services
• CPC Class Codes: H04L 2209/76 Proxy, i.e. using intermediary entity to perform cryptographic operations
• CPC Class Codes: H04L 63/0471 applying encryption by an intermediary, e.g. receiving clear information at the intermediary and encrypting the received information at the intermediary before forwarding
• CPC Class Codes: H04L 9/006 involving public key infrastructure [PKI] trust models network architecture or network communication protocol for supporting authentication of entities using certificates in a packet data network H04L63/0823
• CPC Class Codes: H04L 9/30 Public key, i.e. encryption algorithm being computationally infeasible to invert or user's encryption keys not requiring secrecy

Abstract

A remote encryption method is executed by at least one processor of a cryptographic center. The cryptographic center connects to a sending end and to at least one receiving end. Data and a list listing at least one receiving end to which the data is to be sent are received from the sending end. A public key corresponding to the at least one receiving end listed in the received list is obtained. The received data is asymmetrically encrypted using the obtained public key corresponding to the at least one receiving end. The encrypted data is sent to the corresponding receiving end.

Claims

1. A remote encryption method executable by at least one processor of a cryptographic center, the cryptographic center connecting to a sending end and at least one receiving end, the method comprising:

receiving data and a list from the send end, the list listing at least one receiving end to which the data is to be sent;

obtaining a public key corresponding to the at least one receiving end listed in the received list;

asymmetrically encrypting the received data using the obtained public key corresponding to the at least one receiving end; and

sending the encrypted data to the corresponding receiving end.

2. The method according to claim 1, wherein the data received from the sending end comprises an electronic signature.

3. The method according to claim 1, wherein the public key is generated by a certification authority of a public key infrastructure system or generated by a certification authority of a certificateless public key system.

4. The method according to claim 1, further comprising:

asymmetrically decrypting the received data using a private key of the cryptographic center, if the data received from the sending end is asymmetrically encrypted using a public key of the cryptographic center.

5. The method according to claim 1, further comprising:

symmetrically decrypting the received data using a symmetric key, if the data received from the sending end is symmetrically encrypted using the symmetric key.

6. A cryptographic center comprising:

at least one processor;

a connection device used to connect to a sending end and at least one receiving end;

a storage device that stores one or more programs, when executed by the at least one processor, causers the at least one processor to;

receive data and a list from the send end, the list listing at least one receiving end to which the data is to be sent;

obtain a public key corresponding to the at least one receiving end listed in the received list;

asymmetrically encrypt the received data using the obtained public key corresponding to the at least one receiving end; and

send the encrypted data to the corresponding receiving end.

7. The cryptographic center according to claim 6, wherein the data received from the sending end includes an electronic signature.

8. The cryptographic center according to claim 6, wherein the public key is generated by a public key infrastructure system or generated by a certification authority of a certificateless public key system.

9. The cryptographic center according to claim 6, wherein at least one processor further:

asymmetrically decrypts the received data using a private key of the cryptographic center, if the data received from the sending end is asymmetrically encrypted using a public key of the cryptographic center.

10. The cryptographic center according to claim 6, wherein at least one processor further:

symmetrically decrypts the received data using a symmetric key, if the data received from the sending end is symmetrically encrypted using the symmetric key.

11. A non-transitory storage medium having stored thereon instruction that, when executed by at least one processor of a cryptographic center, causers the at least one processor to perform a remote encryption method, the cryptographic center connecting to a sending end and at least one receiving end, the method comprising:

receiving data and a list from the send end, the list listing at least one receiving end to which the data is to be sent;

obtaining a public key corresponding to the at least one receiving end listed in the received list;

asymmetrically encrypting the received data using the obtained public key corresponding to the at least one receiving end; and

sending the encrypted data to the corresponding receiving end.

12. The non-transitory storage medium according to claim 11, wherein the data received from the sending end comprises an electronic signature.

13. The non-transitory storage medium according to claim 11, wherein the public key is generated by a certification authority of a public key infrastructure system or generated by a certification authority of a certificateless public key system.

14. The non-transitory storage medium according to claim 11, wherein the method further comprising:

asymmetrically decrypting the received data using a private key of the cryptographic center, if the data received from the sending end is asymmetrically encrypted using a public key of the cryptographic center.

15. The non-transitory storage medium according to claim 11, wherein the method further comprising:

symmetrically decrypting the received data using a symmetric key, if the data received from the sending end is symmetrically encrypted using the symmetric key.