سند علمی

A two-phase encryption scheme for enhancing database security

چکیده

In this article, we propose a two-phase encryption algorithm for data base systems. The system, a record-oriented cryptosystem, allows the encryption and decryption of fields within a record by means of writing and reading subkeys of fields. In addition, we develop two algorithms for cryptographic relational algebra in data base systems. Two simple methods of solving the key management problem in the subkey scheme are presented.

اسناد مشابه

  • An Attribute-Based Anonymous Broadcast Encryption Scheme with Adaptive Security in the Standard Model

    سند علمی۲۰۱۶IACR Cryptology ePrint ArchiveReyhaneh Rabaninejad, Mohammad Hassan Ameri, Mahshid Delavar, Javad Mohajeri

    In broadcast encryption schemes, a distribution center broadcasts an encrypted message to a subset S chosen from a universe of receivers and only the intended users are able to decrypt the message. Most broadcast encryption schemes do not provide anonymity and the identities of t

  • Related Message Attacks to Public Key Encryption Schemes: Relations among Security Notions

    سند علمی۲۰۰۹IACR Cryptology ePrint ArchiveMaria Isabel Gonzalez Vasco, Angel L. Pérez del Pozo

    Consider a scenario in which an adversary, attacking a certain public key encryption scheme, gains knowledge of several ciphertexts which underlying plaintext are meaningfully related with a given target ciphertext. This kind of related message attack has been proved successful a

  • Cryptanalysis of a Fast Encryption Scheme for Databases and of its Variant

    سند علمی۲۰۱۰Stéphane Jacob

    Protecting the confidentiality in large databases without degrading their performance is a challenging problem, especially when encryption and decryption must be performed at the database-level or at the application-level. We here focus on symmetric ciphers for database encryptio

  • Hybrid Encryption for Cloud Database Security

    سند علمی۲۰۱۲Amanjot Kaur, Manisha Bhardwaj

    In cloud computing environment the new data management model is in use now a days that enables data integration and access on a large scale cloud computing as a service termed as Database-as-a-service (DAAS). Through which service provider offers customer management functionaliti

  • Some RSA-Based Encryption Schemes with Tight Security Reduction

    سند علمی۲۰۰۳ASIACRYPTKaoru Kurosawa, Tsuyoshi Takagi

    In this paper, we study some RSA-based semantically secure encryption schemes (IND-CPA) in the standard model. We first derive the exactly tight one-wayness of Rabin-Paillier encryption scheme which assumes that factoring Blum integers is hard. We next propose the first IND-CPA s

  • Cryptographic salting for security enhancement of double random phase encryption schemes

    مقاله‌ی دسترسی آزاد۲۰۱۷Journal of OpticsAlejandro VelezZea, John FredyBarrera, RobertoTorroba