Method and system for managing security in a computing environment

• US 9,560,019 B2
• Filed: 02/19/2014
• Issued: 01/31/2017
• Est. Priority Date: 04/10/2013
• Status: Active Grant

• Current Assignee: Kyndryl Incorporated
• Original Assignee: International Business Machines Corporation
• Inventors: Barney, Jonathan M., Mega, Cataldo, Plattier, Edmond, Suski, Daniel
• Primary Examiner(s): Su, Sarah
• Application Number:
  US14/183,735
• Publication Number:
  US 20140310513A1
• Time in Patent Office: 1,077 Days
• Field of Search: 713/153, 713/150, 380/283
• US Class Current: 1/1
• CPC Class Codes: G06F 21/602 Providing cryptographic facilities or services
• CPC Class Codes: H04L 63/0272 Virtual private networks
• CPC Class Codes: H04L 63/0428 wherein the data content is protected, e.g. by encrypting or encapsulating the payload
• 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 63/0478 applying multiple layers of encryption, e.g. nested tunnels or encrypting the content with a first key and then with at least a second key cryptographic mechanisms or cryptographic arrangements using a plurality of keys or algorithms H04L9/14
• CPC Class Codes: H04L 63/062 for key distribution, e.g. centrally by trusted party cryptographic mechanisms or cryptographic arrangements for key distribution involving a central third party H04L9/0819
• CPC Class Codes: H04L 9/0643 Hash functions, e.g. MD5, SHA, HMAC or f9 MAC
• CPC Class Codes: H04L 9/083 involving central third party, e.g. key distribution center [KDC] or trusted third party [TTP]
• CPC Class Codes: H04L 9/0841 involving Diffie-Hellman or related key agreement protocols
• CPC Class Codes: H04L 9/0869 involving random numbers or seeds
• CPC Class Codes: H04L 9/32 including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials

Abstract

A method and system for managing data security in a computing environment. A processor at the gateway server receives, from a user device, at least one message. Each message requests that an encryption key be downloaded to the user device. The gateway server interfaces between the user device and a cloud that includes interconnected computing systems external to the user device. In response to the received at least one message, the processor generates at least one unique encryption key for each message and sends the at least one generated encryption key to the user device, but does not store any of the generated encryption keys in the cloud. For each encryption key having been sent to the user device, the processor receives each encryption key returned from the user device. For each encryption key received from the user device, the processor stores each received encryption key in the cloud.

Claims

1. A method for managing data security in a computing environment, said method comprising:

receiving, by a processor of a gateway server from a user device, at least one message, wherein each message requests that an encryption key be downloaded to the user device, and wherein the gateway server interfaces between the user device and a cloud comprising a plurality of interconnected computing systems external to the user device;

in response to the received at least one message;

said processor generating, for each message, at least one unique encryption key for encrypting and decrypting data, sending each encryption key of the at least one generated encryption key to the user device, and not storing any of the generated encryption keys in the cloud, wherein the at least one generated encryption key comprises a first encryption key;

for each encryption key of the at least one generated encryption key having been sent to the user device, said processor receiving each sent encryption key of the at least one generated encryption key returned from the user device;

for each received encryption key, said processor validating each received encryption key for use by the processor to encrypt data to be stored in the cloud, wherein said validating each received encryption key comprises storing each received encryption key in the cloud at a time specific to each received encryption key, wherein said storing each received encryption key in the cloud comprises storing the first encryption key in the cloud at a first key storage time;

said processor storing first data in the cloud at a first data storage time after the first key storage time;

said processor encrypting the first data, at a first data encryption time after the first data storage time, by using the first encryption key to encrypt the first data; and

said processor decrypting the encrypted first data, at a first data decryption time after the first data encryption time, by using the first encryption key to decrypt the encrypted first data.

2. The method of claim 1, wherein said receiving each encryption key returned from the user device comprises receiving a second encryption key returned from the user device, wherein said storing comprises storing the second encryption key in the cloud at a second key storage time after the first data storage time, wherein the encrypted first data is denoted as singly encrypted first data, and wherein the method further comprises:

said processor encrypting the singly encrypted first data, at another first data encryption time after the second key storage time, by using the second encryption key to encrypt the singly encrypted first data to form a doubly encrypted first data; and

said processor decrypting the doubly encrypted first data, by using the second encryption key to decrypt the doubly encrypted first data to form the singly encrypted first data, followed by using the first encryption key to decrypt the singly encrypted first data to form the first data unencrypted.

3. The method of claim 1, wherein said receiving each encryption key returned from the user device comprises receiving a second encryption key returned from the user device, wherein said storing comprises storing the second encryption key in the cloud at a second key storage time after the first data storage time, and wherein the method further comprises:

said processor abandoning the first encryption key at a first key abandoning time after the first data decryption time; and

said processor encrypting the first data, at another first data encryption time after the first data abandoning time and after the second key storage time, by using the second encryption key to encrypt the first data.

4. The method of claim 3, wherein the first data decryption time is simultaneous with the second key storage time.

5. The method of claim 3, wherein the method further comprises:

said processor storing second data in the cloud at a second data storage time prior to the second key storage time;

said processor encrypting the second data, at a second data encryption time after the second data storage time, by using the second encryption key to encrypt the second data; and

said processor decrypting the encrypted second data, at a second data decryption time after the second data encryption time, by using the second encryption key to decrypt the encrypted second data.

6. A computer program product, comprising a computer readable storage device having computer readable program code stored therein, said program code containing instructions which, upon being executed by a processor of a gateway server of a computer system implements a method for managing data security in a computing environment, said method comprising:

receiving, by the processor of the gateway server from a user device, at least one message, wherein each message requests that an encryption key be downloaded to the user device, and wherein the gateway server interfaces between the user device and a cloud comprising a plurality of interconnected computing systems external to the user device;

in response to the received at least one message;

said processor generating, for each message, at least one unique encryption key for encrypting and decrypting data, sending each encryption key of the at least one generated encryption key to the user device, and not storing any of the generated encryption keys in the cloud, wherein the at least one generated encryption key comprises a first encryption key;

for each encryption key of the at least one generated encryption key having been sent to the user device, said processor receiving each sent encryption key of the at least one generated encryption key returned from the user device;

for each received encryption key, said processor validating each received encryption key for use by the processor to encrypt data to be stored in the cloud, wherein said validating each received encryption key comprises storing each received encryption key in the cloud at a time specific to each received encryption key, wherein said storing each received encryption key in the cloud comprises storing the first encryption key in the cloud at a first key storage time;

said processor storing first data in the cloud at a first data storage time after the first key storage time;

said processor encrypting the first data, at a first data encryption time after the first data storage time, by using the first encryption key to encrypt the first data; and

said processor decrypting the encrypted first data, at a first data decryption time after the first data encryption time, by using the first encryption key to decrypt the encrypted first data.

7. The computer program product of claim 6, wherein said receiving each encryption key returned from the user device comprises receiving a second encryption key returned from the user device, wherein said storing comprises storing the second encryption key in the cloud at a second key storage time after the first data storage time, wherein the encrypted first data is denoted as singly encrypted first data, and wherein the method further comprises:

said processor encrypting the singly encrypted first data, at another first data encryption time after the second key storage time, by using the second encryption key to encrypt the singly encrypted first data to form a doubly encrypted first data; and

said processor decrypting the doubly encrypted first data, by using the second encryption key to decrypt the doubly encrypted first data to form the singly encrypted first data, followed by using the first encryption key to decrypt the singly encrypted first data to form the first data unencrypted.

8. The computer program product of claim 6, wherein said receiving each encryption key returned from the user device comprises receiving a second encryption key returned from the user device, wherein said storing comprises storing the second encryption key in the cloud at a second key storage time after the first data storage time, and wherein the method further comprises:

said processor abandoning the first encryption key at a first key abandoning time after the first data decryption time; and

said processor encrypting the first data, at another first data encryption time after the first data abandoning time and after the second key storage time, by using the second encryption key to encrypt the first data.

9. The computer program product of claim 8, wherein the first data decryption time is simultaneous with the second key storage time.

10. The computer program product of claim 8, wherein the method further comprises:

said processor storing second data in the cloud at a second data storage time prior to the second key storage time;

said processor encrypting the second data, at a second data encryption time after the second data storage time, by using the second encryption key to encrypt the second data; and

said processor decrypting the encrypted second data, at a second data decryption time after the second data encryption time, by using the second encryption key to decrypt the encrypted second data.

11. A computer system comprising a gateway server that includes a processor, a memory coupled to the processor, and a computer readable storage device coupled to the processor, said storage device containing program code which, upon being executed by the processor, implements a method for managing data security in a computing environment, said method comprising:

receiving, by the processor of the gateway server from a user device, at least one message, wherein each message requests that an encryption key for encrypting and decrypting data be downloaded to the user device, and wherein the gateway server interfaces between the user device and a cloud comprising a plurality of interconnected computing systems external to the user device;

in response to the received at least one message;

said processor generating, for each message, at least one unique encryption key for encrypting and decrypting data, sending each encryption key of the at least one generated encryption key to the user device, and not storing any of the generated encryption keys in the cloud, wherein the at least one generated encryption key comprises a first encryption key;

for each encryption key of the at least one generated encryption key having been sent to the user device, said processor receiving each sent encryption key of the at least one generated encryption key returned from the user device;

for each received encryption key, said processor validating each received encryption key for use by the processor to encrypt data to be stored in the cloud, wherein said validating each received encryption key comprises storing each received encryption key in the cloud at a time specific to each received encryption key, wherein said storing each received encryption key in the cloud comprises storing the first encryption key in the cloud at a first key storage time;

said processor storing first data in the cloud at a first data storage time after the first key storage time;

said processor encrypting the first data, at a first data encryption time after the first data storage time, by using the first encryption key to encrypt the first data; and

said processor decrypting the encrypted first data, at a first data decryption time after the first data encryption time, by using the first encryption key to decrypt the encrypted first data.

12. The computer system of claim 11, wherein said receiving each encryption key returned from the user device comprises receiving a second encryption key returned from the user device, wherein said storing comprises storing the second encryption key in the cloud at a second key storage time after the first data storage time, wherein the encrypted first data is denoted as singly encrypted first data, and wherein the method further comprises:

said processor encrypting the singly encrypted first data, at another first data encryption time after the second key storage time, by using the second encryption key to encrypt the singly encrypted first data to form a doubly encrypted first data; and

said processor decrypting the doubly encrypted first data, by using the second encryption key to decrypt the doubly encrypted first data to form the singly encrypted first data, followed by using the first encryption key to decrypt the singly encrypted first data to form the first data unencrypted.

13. The computer system of claim 11, wherein said receiving each encryption key returned from the user device comprises receiving a second encryption key returned from the user device, wherein said storing comprises storing the second encryption key in the cloud at a second key storage time after the first data storage time, and wherein the method further comprises:

said processor abandoning the first encryption key at a first key abandoning time after the first data decryption time; and

said processor encrypting the first data, at another first data encryption time after the first data abandoning time and after the second key storage time, by using the second encryption key to encrypt the first data.

14. The computer system of claim 13, wherein the first data decryption time is simultaneous with the second key storage time.

15. The computer system of claim 13, wherein the method further comprises:

said processor storing second data in the cloud at a second data storage time prior to the second key storage time;

said processor encrypting the second data, at a second data encryption time after the second data storage time, by using the second encryption key to encrypt the second data; and

said processor decrypting the encrypted second data, at a second data decryption time after the second data encryption time, by using the second encryption key to decrypt the encrypted second data.