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Efficient Hybrid Proxy Re-Encryption for Practical Revocation and Key Rotation
Proxy Re-encryption Ciphertext Delegation Hybrid Encryption
2017/9/1
We consider the problems of i) using public-key encryption to enforce dynamic access control on clouds; and ii) key rotation of data stored on clouds. Historically, proxy re-encryption, ciphertext del...
A common requirement in practice is to periodically rotate the keys used to encrypt stored data. Systems used by Amazon and Google do so using a hybrid encryption technique which is eminently practica...
On the Resistance of Prime-variable Rotation Symmetric Boolean Functions against Fast Algebraic Attacks
Boolean functions cryptography fast algebraic attacks
2015/12/30
Boolean functions used in stream ciphers should have many cryptographic properties in order to help resist different kinds of cryptanalytic attacks. The resistance of Boolean functions against fast al...
On the Systematic Constructions of Rotation Symmetric Bent Functions with Any Possible Algebraic Degrees
Orbit rotation symmetric function Walsh transform
2015/12/30
In the literature, few constructions of n-variable rotation symmetric bent functions have been presented,
which either have restriction on n or have algebraic degree no more than 4. In this paper, fo...
Enumerating Results of Homogeneous Rotation over GF(p)
Rotation symmetry Homogenous Minimal function Enumeration Inclusion–exclusion principle
2010/12/22
In this paper, we consider the open problem of counting homogeneous rotation symmetric Boolean functions over $GF(p)$. By using inclusion–exclusion principle, we obtain a formula to exactly enumerate ...
Results on Rotation Symmetric Bent Functions
Applied Statistics Unit, Indian Statistical Institute
2009/2/5
In this paper we analyze the combinatorial properties related to the Walsh spectra
of rotation symmetric Boolean functions on even number of variables. These results are
then applied in studying rot...
Enumeration of 9-variable Rotation Symmetric Boolean Functions having Nonlinearity > 240
Boolean Functions Covering Radius Reed-Muller Code
2008/12/9
The existence of 9-variable Boolean functions having nonlinearity strictly greater
than 240 has been shown very recently (May 2006) by Kavut, Maitra and Y¨ucel.
The functions with nonlinearity 241 h...
Scalable Storage Scheme from Forward Key Rotation
Secure Storage Public Key Backward Key Rotation Files Scalability
2008/8/25
Kallahalla et al. presented a RSA-based Forward Key Rotation mechanism in secure storage scheme PLUTUS to ensure that the key used for encrypting updated files is related to the keys for all files in ...
Construction of Rotation Symmetric Boolean Functions with Maximum Algebraic Immunity on Odd Number of Variables
Algebraic Immunity Boolean Function Nonlinearity Nonsingular Matrix
2008/6/4
In this paper we present a theoretical construction of Rotation
Symmetric Boolean Functions (RSBFs) on odd number of variables
with maximum possible AI and further these functions are not symmetric...
Generalized Rotation Symmetric and Dihedral Symmetric Boolean Functions – 9 variable Boolean Functions with Nonlinearity 242
9-variable Boolean functions Nonlinearity 242 RSBFs
2008/5/30
Recently, 9-variable Boolean functions having nonlinearity
241, which is strictly greater than the bent concatenation bound of 240,
have been discovered in the class of Rotation Symmetric Boolean
F...