506 search results - page 58 / 102 » The Block Cipher Square |
DICTA
2003
13 years 11 months ago
2003
Most codecs such as MPEG-1,2 are based on processing pixels in predetermined tiles of square blocks. The processing of each block is independent of the object-based contents that m...
ACISP
2005
Springer
14 years 3 months ago
2005
Springer
Abstract. The PCBC block cipher mode of operation has many variants, of which one, due to Meyer and Matyas, dates back over 20 years. Whilst a particularly simple variant of PCBC h...
ACNS
2010
Springer
14 years 2 months ago
2010
Springer
Abstract. This work presents a new method to compute the GHASH function involved in the Galois/Counter Mode of operation for block ciphers. If X = X1 . . . Xn is a bit string made ...
CRYPTO
2000
Springer
14 years 2 months ago
2000
Springer
We investigate the all-or-nothing encryption paradigm which was introduced by Rivest as a new mode of operation for block ciphers. The paradigm involves composing an all-or-nothing...
FSE
1998
Springer
14 years 2 months ago
1998
Springer
Ding et al [DNRS97] propose a stream generator based on several layers. We present several attacks. First, we observe that the non-surjectivity of a linear combination step allows ...