Secure database backup and recovery

Patent metadata

Field	Value
Publication number	US-9715594-B2
Application number	US-201514883905-A
Country	US
Kind code	B2
Filing date	Oct 15, 2015
Priority date	Nov 6, 2014
Publication date	Jul 25, 2017
Grant date	Jul 25, 2017

Abstract

As disclosed herein a computer system for secure database backup and recovery in a secure database network has N distributed data nodes. The computer system includes program instructions that include instructions to receive a database backup file, fragment the file using a fragment engine, and associate each fragment with one node, where the fragment is not stored on the associated node. The program instructions further include instructions to encrypt each fragment using a first encryption key, and store, randomly, encrypted fragments on the distributed data nodes. The program instructions further include instructions to retrieve the encrypted fragments, decrypt the encrypted fragments using the first encryption key, re-encrypt the decrypted fragments using a different encryption key, and store, randomly, the re-encrypted fragments on the distributed data nodes. A computer program product and method corresponding to the above computer system are also disclosed herein.

First claim

What is claimed is:

1. A method for secure database backup and recovery in a secure database network having N distributed data nodes, wherein N is an integer greater than 2, the method comprising:
receiving a database backup file from a database system;
fragmenting the file into n fragments, wherein n is an integer greater than 2;
associating each fragment with a node of the N distributed data nodes that will not be used to store the fragment;
encrypting each fragment of the n fragments using a first key;
storing the n fragments on the N nodes whereby no fragment is stored on its associated node;
retrieving the n fragments a determined time later from the N nodes;
decrypting each fragment of the n fragments using the first key;
encrypting each fragment of the n fragments again with a different key; and
storing the n fragments again on the N nodes whereby no fragment is stored on its associated node;
wherein storing and retrieval of the n fragments is performed by agents in the database system and sensors in the data nodes whereby fragment node location is not stored in the database system; and
wherein after retrieving each fragment from a respective node, said fragment is stored again on a different node from the node it was retrieved from.

2. The method of claim 1 further comprising using a key generator and store to fragment the key; encrypt each key fragment; and store each encrypted key fragment with a backup fragment.

3. The method of claim 2 wherein database metadata is added to the fragment whereby database metadata is fragmented and distributed.

4. The method of claim 3 wherein the database metadata includes, but is not limited to, network configuration, database node locations and backup image expiration.

5. The method of claim 4 wherein the encryption is public/private key encryption.

Assignees

• IBM

Inventors

• Barbas Pedro M
• Duffy Joseph
• Maycock Ken
• Tilson David M

Classifications

• G06F16/182

  Distributed file systems · CPC title

• G06F3/067

  Distributed or networked storage systems, e.g. storage area networks [SAN], network attached storage [NAS] · CPC title

• G06F2201/805

  Real-time · CPC title

• H04L67/1097

  for distributed storage of data in networks, e.g. transport arrangements for network file system [NFS], storage area networks [SAN] or network attached storage [NAS] · CPC title

• G06F11/1448

  Management of the data involved in backup or backup restore · CPC title