1,804 research outputs found
Recommended from our members
Morpheus: stream cipher for software & hardware applications
In a world where electronic devices with different characteristics are networked, privacy is an essential element for the communicating process. Privacy can be achieved by encryption algorithms with unique features based on the application that are deployed. In this paper a word-oriented stream cipher, or Morpheus, for both hardware and software devices, is proposed. Morpheus targets multimedia applications, such as Games-On-Demand or IPTV, where data are usually streamed over different kind of networks and devices. Morpheus behaves very well in all known statistical tests and is resilient to known attacks for both synchronous and self-synchronous encryption modes
A New Type of Cipher: DICING_csb
In this paper, we will propose a new type of cipher named DICING_csb, which
is derived from our previous stream cipher DICING. It has applied a stream of
subkey and an encryption form of block ciphers, so it may be viewed as a
combinative of stream cipher and block cipher. Hence, the new type of cipher
has fast rate like a stream cipher and need no MAC.Comment: There is a new variant added in the section
Nofish - A new stream cipher
The proposed algorithm is a synchronous stream cipher, more precisely a binary additive stream cipher because it using the XOR function to encrypt the plaintext. The design is based on HENKOS stream cipher (http://eprint.iacr.org/2004/080.pdf), the functions used in the internal state are kept, the initialization and mixing key part being modified with respect to its revealed weaknesses. This stream cipher uses a named key of 64 bytes (512 bits) as a secret key and no initialization vector. Nofish is free to use for any non-commercial purposes, and the reference source code can be found in the appendix
Weaknesses in HENKOS Stream Cipher
HENKOS is a synchronous stream cipher posted by Marius Oliver Gheorghita to eprint. In this paper we are going to present some weaknesses in the cipher. We first present a chosen IV attack which is very straight forward attack on the cipher. Second we present a group of weak keys
On the Security of Y-00 under Fast Correlation and Other Attacks on the Key
The potential weakness of the Y-00 direct encryption protocol when the
encryption box ENC in Y-00 is not chosen properly is demonstrated in a fast
correlation attack by S. Donnet et al in Phys. Lett. A 35, 6 (2006) 406-410. In
this paper, we show how this weakness can be eliminated with a proper design of
ENC. In particular, we present a Y-00 configuration that is more secure than
AES under known-plaintext attack. It is also shown that under any
ciphertext-only attack, full information-theoretic security on the Y-00 seed
key is obtained for any ENC when proper deliberate signal randomization is
employed
- …