System and method for controlling transaction data access

1. A system for controlling transaction data access, comprising:

a transaction management module configured to determine a plurality of security levels for transaction data, using a processor;

a data encryption module configured to perform multiple level encrypting the transaction data according to the plurality of security levels, using a processor; and

a storage device configured to store the encrypted data as a block, and provide the block to a peer-to-peer (P2P) network,

wherein performing the multiple level encrypting includes applying a first encryption to at least a portion of the transaction data and applying a second encryption to the transaction data including the at least a portion to which the first encryption has been applied, and

wherein the first and the second encryptions correspond to different security levels.

2. The system of claim 1 , wherein:

the transaction data comprises a first data and a second data,

the transaction management module determines the security level of the first data as a first security level, and determines the security level of the second data as a second security level, and

the data encryption module generates a first index based on the first data and the second data, generates a first data set by concatenating the first index with the first data and the second data, and generates a first encrypted data by encrypting the first index and the first data with a first encryption key corresponding to the first security level.

3. The system of claim 2 , wherein:

the first index comprises information on a number of data in the first data set or a length of data.

4. The system of claim 2 , wherein:

the data encryption module generates a second index based on the first encrypted data and the second data, generates a second data set by concatenating the second index with the first encrypted data and the second data, and generates a second encrypted data by encrypting the second index, the first encrypted data, and the second data with a second encryption key corresponding to the second security level.

5. The system of claim 4 , wherein:

the transaction data further comprises a third data,

the transaction management module determines the security level of the third data as a third security level, and

the data encryption module generates a third index based on the second encrypted data and the third data, generates a third data set by concatenating the third index with the second encrypted data and the third data, and generates a third encrypted data by encrypting the third index, the second encrypted data, and the third data with a third encryption key corresponding to the third security level.

6. The system of claim 1 , further comprising:

a data access request module configured to send an access request for the transaction data to the transaction management module and receive a decryption key from the transaction management module, using a processor.

7. The system of claim 6 , further comprising:

a data decryption module configured to perform multiple level decrypting the encrypted data using the decryption key, using a processor.

8. The system of claim 7 , wherein:

the decryption key comprises a third decryption key, and

the data decryption module obtains a third data set by decrypting a third encrypted data with the third decryption key, separates a second encrypted data from the third data set based on a third index, and restores a third data.

9. The system of claim 8 , wherein:

the decryption key comprises a second decryption key, and

the data decryption module obtains a second data set by decrypting a second encrypted data with the second decryption key, separates a first encrypted data from the second data set based on a second index, and restores a second data.

10. The system of claim 9 , wherein:

the decryption key comprises a first decryption key, and

the data decryption module obtains a first data set by decrypting a first encrypted data with the first decryption key, and restores a first data from the first data set based on a first index.

11. A system for controlling transaction data access comprising:

a data encryption module configured to perform multiple level encrypting the transaction data using a plurality of encryption keys, using a processor;

a storage device configured to store the encrypted data as a block, and provide the block to a P2P network; and

a data decryption module configured to perform multiple level decrypting the encrypted data using a plurality of decryption keys generated in a pair with the plurality of encryption keys, using a processor,

wherein performing the multiple level encrypting includes applying a first encryption to at least a portion of the transaction data and applying a second encryption to the transaction data including the at least a portion to which the first encryption has been applied, and

wherein the first and the second encryptions correspond to different security levels.

12. The system of claim 11 , wherein:

the transaction data comprises a first data and a second data, and

the data encryption module generates a first encrypted data by encrypting the first data with a first encryption key, and generates a second encrypted data by encrypting the first encrypted data and the second data with a second encryption key.

13. The system of claim 12 , wherein:

the data decryption module separates the first encrypted data by decrypting the second encrypted data with a second decryption key, and restores the second data.

14. The system of claim 13 , wherein:

the data decryption module restores the first data by decrypting the first encrypted data with a first decryption key.

15. A method for controlling transaction data access comprising:

determining a plurality of security levels for transaction data;

performing multiple level encrypting the transaction data according to the plurality of security levels; and

storing the encrypted data as a block to provide the block to a peer-to-peer (P2P) network,

wherein performing the multiple level encrypting includes applying a first encryption to at least a portion of the transaction data and applying a second encryption to the transaction data including the at least a portion to which the first encryption has been applied, and

wherein the first and the second encryptions correspond to different security levels.

16. The method of claim 15 , wherein:

the transaction data comprises a first data and a second data,

the determining the plurality of security levels comprises,

determining the security level of the first data as a first security level, and

determining the security level of the second data as a second security level, and

the performing multiple level encrypting comprises,

generating a first index based on the first data and the second data,

generating a first data set by concatenating the first index with the first data and the second data, and

generating a first encrypted data by encrypting the first index and the first data with a first encryption key corresponding to the first security level.

17. The method of claim 16 , wherein:

the performing multiple level encrypting further comprises,

generating a second index based on the first encrypted data and the second data,

generating a second data set by concatenating the second index with the first encrypted data and the second data, and

generating a second encrypted data by encrypting the second index, the first encrypted data, and the second data with a second encryption key corresponding to the second security level.

18. The method of claim 16 , further comprising:

performing multiple level decrypting the encrypted data using the decryption key.

19. The method of claim 18 , wherein:

the decryption key comprises a third decryption key, and

the performing multiple level decrypting further comprises,

obtaining a third data set by decrypting a third encrypted data with the third decryption key, separating a second encrypted data from the third data set based on a third index, and restoring a third data.

20. The method of claim 19 , wherein:

the decryption key comprises a second decryption key, and

the performing multiple level decrypting further comprises,

obtaining a second data set by decrypting a second encrypted data with the second decryption key, separating a first encrypted data from the second data set based on a second index, and restoring a second data.