نتایج جستجو برای: order preserving encryption
تعداد نتایج: 975584 فیلتر نتایج به سال:
Order Preserving Encryption (OPE) schemes have been examined to a great extent in the cryptography literature because of their prospective application to database design. OPE is an appealing method for database encryption as it permits to execute sort and range queries in an efficient manner without decrypting the data. Databases such as CryptDB are beginning to employ encryption to guard sensi...
Order-preserving encryption (OPE) allows encrypting without losing information about the order relation between the encrypted data items. Thus, the execution of compare, order and grouping operations can be done like on plaintext data. In particular it allows databases to do range queries over encrypted data, which is a useful feature especially for cloud databases that usually run in untrusted...
Semantic-security of individual plaintext bits given the corresponding ciphertext is a fundamental notion in modern cryptography. We initiate the study of this basic problem for Order-Preserving Encryption (OPE), asking “what plaintext information can be semantically hidden by OPE encryptions?” OPE has gained much attention in recent years due to its usefulness for secure databases, and has rec...
Order-preserving encryption (OPE) is a cryptographic primitive that preserves the order of plaintexts. In past few years, many OPE schemes were proposed to solve problem executing range queries in encrypted databases. However, leaks some certain information (for example, ciphertext), so it vulnerable attacks. Subsequently, order-revealing (ORE) was by Boneh <italic xmlns:mml="http://www.w3.org/...
Processing queries on encrypted data protects sensitive data stored in cloud databases. CryptDB has introduced the approach of adjustable encryption for such processing. A database column is adjusted to the necessary level of encryption, e.g. order-preserving, for the set of executed queries, but never reversed. This has the drawback that long running cloud databases will eventually transform i...
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