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(R)CCA Secure Updatable Encryption with Integrity Protection
updatable encryption integrity, key rotation ciphertext-independence
2019/2/28
An updatable encryption scheme allows a data host to update ciphertexts of a client from an old to a new key, given so-called update tokens from the client. Rotation of the encryption key is a common ...
An updatable encryption scheme allows to periodically rotate the encryption key and move already existing ciphertexts from the old to the new key. These ciphertext updates are done with the help of a ...
CCA Security for Self-Updatable Encryption: Protecting Cloud Data When Clients Read/Write Ciphertexts
Public-key encryption Self-updatable encryption Chosen-ciphertext security
2016/1/27
Self-updatable encryption (SUE) is a new kind of public-key encryption, motivated by cloud computing,
which enables anyone (i.e. cloud server with no access to private keys) to update a past cipherte...
Self-Updatable Encryption with Short Public Parameters and Its Extensions
Public-key encryption Self-updatable encryption Ciphertext delegation
2016/1/23
Cloud storage is very popular since it has many advantages, but there is a new threat to cloud storage that was not considered before. Self-updatable encryption that updates a past ciphertext to a fu...
Fully Secure Self-Updatable Encryption in Prime Order Bilinear Groups
public-key encryption self-updatable encryption ciphertext update
2016/1/5
In CRYPTO 2012, Sahai et al. raised the concern that in a cloud control system revocation
of past keys should also be accompanied by updation of previously generated ciphertexts in
order to prevent ...
Self-Updatable Encryption: Time Constrained Access Control with Hidden Attributes and Better Efficiency
Attribute-based encryption Predicate encryption
2014/3/6
Revocation and key evolving paradigms are central issues in cryptography, and in PKI in particular. A novel concern related to these areas was raised in the recent work of Sahai, Seyalioglu, and Water...