Accelerated cryptography with an encryption attribute

a technology of encryption attribute and cryptography, applied in the field of content security, can solve the problems of requiring an unreasonable length of time to crack and inability to decrypt a file without a correct key

Inactive Publication Date: 2015-01-15
INTEL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This approach reduces computational time and increases performance by encrypting only necessary segments, making encrypted files more secure and usable while minimizing computational overhead, thus enhancing the efficiency of encryption and decryption operations.

Problems solved by technology

An EFS uses public key cryptography to ensure that decrypting a file without a correct key is in theory impossible, or requires an unreasonable length of time to crack.

Method used

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  • Accelerated cryptography with an encryption attribute
  • Accelerated cryptography with an encryption attribute
  • Accelerated cryptography with an encryption attribute

Examples

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Embodiment Construction

[0014]Embodiments of methods and systems for encrypting and decrypting with encryption attributes are presented. An encryption attribute contains information to identify one or more segments of a file to be encrypted. An encryption process encrypts those one or more segments to generate a partly encrypted file instead of encrypting the entire file. That is, the file includes some data that are encrypted and some data that are not. In one embodiment, the encryption attribute is encrypted and stored together with the partly encrypted file.

[0015]In one embodiment, the decryption operation identifies those segments that are encrypted in the partly encrypted file with the information contained in the encryption attribute. In one embodiment, an authorized user, for example the owner of the file, sets the encryption attribute associated with a file to identify segments of the file that should be encrypted during an encryption operation.

[0016]In the following description, numerous specific ...

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PUM

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Abstract

Methods and systems for encrypting and decrypting are presented. In one embodiment, the method comprises encrypting one or more segments of a data with a key. The data is associated with at least one encryption attribute and having a plurality of segments. The encryption attribute includes information to identify one or more segments of the data to encrypt. The method further comprises encrypting the encryption attribute and storing the data including the partly encrypted data and the encrypted encryption attribute.

Description

FIELD OF THE INVENTION[0001]Embodiments of the invention relate to the field of content security, in particular, for encrypting and decrypting a data.BACKGROUND OF THE INVENTION[0002]Symmetric cryptography is a cryptography method in which both the encryption and decryption operations share the same key (or, less commonly, in which their keys are different, but related in an easily computable way). Examples of symmetric cryptography algorithms include Data Encryption Standard (DES) and Advanced Encryption Standard (AES).[0003]On the other hand, public key encryption algorithms use asymmetric keys for encryption and decryption. The asymmetric keys comprise a private key (which is held only by its owner) and a public key (which is available to other entities). The two keys are separate but complementary in function. Information that is encrypted with the public key can be decrypted only with the corresponding private key. The two keys together are called a key pair or a key set. RSA a...

Claims

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Application Information

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Patent Type & AuthorityApplications(United States)
IPC IPC(8): H04L9/08
CPCH04L9/0825G06F21/6209G06F9/06G06F21/00H04L9/14G06F21/62
InventorCHEW, YEN HSIANG
OwnerINTEL CORP