ENSURING DATA INTEGRITY USING BIOMETRIC MECHANISM ALONG WITH ACCESS CONTROL AND USER REVOCATION ON CLOUD COMPUTING

Computer Science And Engineering

NATIONAL CONFERENCE ON TECHNOLOGICAL ADVANCEMENTS IN ENGINEERING

To provide the outsourcible data protection ,Access control mechanism and user revocationis used.Access policy is defined by the data owner for the data user .User revocation is done by the cloud service provider with the updation of ciphertext that is stored in the cloud.Data owner itself and encryption proxy is used for converting the plaintext into ciphertext .For the keygeneration ,attribute authorization is used.RSA & AES encryption methods are used for encryption and decryption process. Data user receives the ciphertext to the decryption proxy then partial ciphertext is generated.From that partial ciphertext exact plaintext will be recomputed .To enhance the security mechanism ,biometric mechanism is used .One-time message authentication code MACLESS is embedded with in the message/image documents for the integrity.MACLESS is generated from the message and one-time biokey using MAC-SHA-1 . One time biokey is the feature vector that is generated from the handwritten signature of the data owner using LBP filter mechanism. For the message documents MACLESS is appended at sender side and recomputed at receiver side.For the image documents MACLESS is hidden in the image through DWT based steganography mechanism., recomputed MACLESS for data integrity checking at the receiver side.This can be used in any environment that uses cloud for data storage to provide security.

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