Methods of verifying, signing, encrypting, and decrypting data and file

• US 20070074027A1
• Filed: 09/26/2005
• Published: 03/29/2007
• Est. Priority Date: 09/26/2005
• Status: Abandoned Application

• Current Assignee: Tien-Chun Tung
• Original Assignee: Tien-Chun Tung
• Inventors: Tung, Tien-Chun
• Application Number:
  US11/234,524
• Publication Number:
  US 20070074027A1
• Time in Patent Office: Days
• US Class Current: 713/176
• CPC Class Codes: H04L 2209/56 Financial cryptography, e.g. electronic payment or e-cash
• CPC Class Codes: H04L 2209/80 Wireless
• CPC Class Codes: H04L 9/3247 involving digital signatures

Abstract

Methods of verifying, signing, encrypting and decrypting data and files contained a mobile telecommunication device having public keys (authentication) and private keys (digital identification) installed inside the device, and an electronic device handling requests to the mobile telecommunication device. When the files are signed, verified, encrypted or decrypted, the electronic device is input (or automatically connected) with an identification code and then requests are sent for verification, signing, encryption and decryption together with certain optional necessary data to the mobile telecommunication device. According to various requests, the mobile telecommunication device releases the installed public keys or obtains private keys by inputting pre-set protective access codes to sign, verify, encrypt, or decrypt to the necessary data and then re-transmit the signed, verified, encrypted or decrypted necessary data to the electronic device to complete the methods. By using the mobile telecommunication to sign, verify, encrypt and decrypt the data and files, methods of identification are cost saving and conveniently to be used.

Claims

1. A method for signing, verifying, encrypting and decrypting data and files, the method comprising:

installing a software or a hardware in a mobile telecommunication device;

generating a public key and a private key by the software or hardware in the mobile telecommunication device; and

using the public key and the private key stored in the mobile telecommunication device to sign, verify, encrypt and decrypt the data and files.

2. The method for signing, verifying, encrypting and decrypting data and files as claimed in claim 1, wherein the mobile telecommunication device is a cell phone.

3. The method for signing, verifying, encrypting and decrypting data and files as claimed in claim 1, wherein the method further comprises:

using a protective access code to prevent the private key from illegal accesses. Optionally set a time interval during which the private key is available without re-entering the protective access code.

4. The method for signing, verifying, encrypting and decrypting data and files as claimed in claim 1, wherein multiple pairs of the private keys and the public keys are generated.

5. A method for signing, verifying, encrypting and decrypting data/files, the method comprising:

installing an execution software in a mobile telecommunication device;

inputting a public key and a private key in pair;

operating the execution software (while working together with an electronic device) to sign, verify, encrypt and decrypt the data/files by using the public key and the private key.

6. The method for signing, verifying, encrypting and decrypting data and files as claimed in claim 5, wherein the mobile telecommunication device is a cell phone.

7. The method for signing, verifying, encrypting and decrypting data and files as claimed in claim 5, wherein the method further comprises:

using a protective code to prevent the private-key from illegal accesses.

8. The method for signing, verifying, encrypting and decrypting data and files as claimed in claim 5, wherein multiple pairs of the private keys and the public keys are generated.

9. The method for signing, verifying, encrypting and decrypting data and files as claimed in claim 5, wherein a verification method of the data and files is to confirm validity of signing to the data and files in an electronic device and comprises steps of:

confirming whether the public key is contained in a signature of the data and files;

if a result is negative, confirming whether the public key is saved in the electronic device;

if the result is negative, further confirming whether the public key is saved in a designated certification authority;

if the result is negative, further inputting a set of identification numbers of the mobile telecommunication device belonged to a signer;

or automatically connecting to the mobile telecommunication device of the signer according to properties of the signature;

sending the public key with permission of the signer after the mobile telecommunication device received the request for sending the public key;

or selectively automatically sending the public key to the electronic device;

observing the public key in the electronic device; and

checking validity of the signing in the data and files by using the public key.

10. The method for signing, verifying, encrypting and decrypting data and files as claimed in claim 9, wherein the mobile telecommunication device is a cell phone.

11. The method for signing, verifying, encrypting and decrypting data and files as claimed in claim 9, wherein the electronic device is a computer.

12. The method for signing, verifying, encrypting and decrypting data and files as claimed in claim 9, wherein signing data and files comprises a transmission method to connect to the mobile telecommunication device of the signer.

13. The method for signing, verifying, encrypting and decrypting data and files as claimed in claim 5, wherein signing and verification of the data and files are to sign the files with an electronic device and comprise steps of:

confirming whether the private key is contained in the electronic device;

if the result is positive, inputting a protective access code to obtain the private key that is used to sign digest data of the files to achieve the signing;

if the result is negative, further inputting a set of identification numbers of the mobile telecommunication device belonged to a signer;

sending the digest data of the files to the mobile telecommunication device of the signer in order to ask for the signing;

inputting the protective access code to obtain the private key saved in the mobile telecommunication device;

signing the digest data with the private key;

sending the signed digest data to the electronic device; and

completing a digital signature with the electronic device.

14. The method for signing, verifying, encrypting and decrypting data and files as claimed in claim 13, wherein the electronic device can be a computer or a cell phone.

15. The method for signing, verifying, encrypting and decrypting data and files as claimed in claim 13, wherein the mobile telecommunication device is a cell phone.

16. The method for signing, verifying, encrypting and decrypting data and files as claimed in claim 13, wherein the digest data of the files is a digest of the data and files.

17. The method for signing, verifying, encrypting and decrypting data and files as claimed in claim 5, wherein an encryption method of the data and files is to encrypt the files with an electronic device, is only decrypted by a receiver and comprises steps of:

confirming whether one public key of the receiver is contained in the electronic device;

if the result is negative, confirming whether the public key is saved in a certification authority;

if the result is negative, further inputting a set of identification numbers of the mobile telecommunication device belonged to the receiver;

observing a request for the public key in the mobile telecommunication device of the receiver;

sending the public key of the receiver to the electronic device;

observing the public key in the electronic device;

selectively repeating foregoing steps when multiple receivers are included;

generating a password in the electronic device;

encrypting the files by the password;

or encrypting certain application-dependent cipher data by the password;

encrypting the password by the public key of the receiver;

combining relative data with the data and files to complete the encryption method.

18. The method for signing, verifying, encrypting and decrypting data and files as claimed in claim 17, wherein the mobile telecommunication device is a cell phone in the encryption method of the files.

19. The method for signing, verifying, encrypting and decrypting data and files as claimed in claim 17, wherein the electronic device is a cell phone in the encryption method of the files.

20. The method for signing, verifying, encrypting and decrypting data and files as claimed in claim 17, wherein the electronic device is a computer in the encryption method of the files.

21. The method for signing, verifying, encrypting and decrypting data and files- as claimed in claim 5, wherein a decryption method of the data and files is to decrypt the encrypted data and files by using the private key with an electronic device and comprises steps of:

confirming whether the private key is saved in the electronic device;

if the result is positive, inputting a protective code to obtain the private key that is used to decrypt an encrypted password in the data and files;

if the result is negative, further inputting a set of identification numbers of the mobile telecommunication device having the private key to the electronic device;

or to connect the mobile telecommunication device automatically according to the properties of the public key.

sending a decryption request and the encrypted password;

inputting the protective access code to the mobile telecommunication device to obtain the private key;

using the private key to decrypt the password encrypted by the public key to obtain a decrypted password;

sending the decrypted password to the electronic device;

depending on the actual application, either using the password to decrypt the data and files directly;

or using the password to decrypt certain application-depended cipher data which is used to decrypt the data and files.

22. The method for signing, verifying, encrypting and decrypting data and files as claimed in claim 21, wherein the mobile telecommunication device is a cell phone in the decryption method of the files.

23. The method for signing, verifying, encrypting and decrypting data and files mobile files as claimed in claim 21, wherein the electronic device is a cell phone in the decryption method of the files.

24. The method for signing, verifying, encrypting and decrypting mobile files as claimed in claim 21, wherein the electronic device is a computer or computer peripherals in the decryption method of the files.