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Showing 1 to 14 of 14 for “"stream cipher"”.
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Genetic Algorithm Stream Cipher Key Generation Using NIST Functions
Stream ciphers are beneficial because of their efficiency, speed, and low resource utilization. However, stream ciphers are vulnerable to many attacks if they do not use strong keys for encryption and decryption. Thus, one way to increase the security of stream ciphers is to improve the key …
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Rethinking the Weakness of Stream Ciphers and Its Application to Encrypted Malware Detection
… use is a critical component to the security of a stream cipher: because many implementations simply consist of a key scheduling algorithm and logical exclusive or (XOR), an attacker can completely break the cipher by XORing two ciphertexts encrypted under the same key, revealing the original …
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Error rate performance analysis of stream and block ciphers in a digital mobile communication channel.
… on the bit error rate at the receiver. Block and stream cipher modes based on the Data Encryption Standard (DES) are examined. More specifically, Electronic Code Book (ECB), Cipher Block Chaining (CBC), Output FeedBack (OFB) and Cipher FeedBack (CFB) modes are considered. The ability of binary BCH …
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Studies on Gopala-Hemachandra Codes and their Applications
… exist. In 2014, Nalli and Ozyilmaz proposed a stream cipher based on GH codes. We show that this cipher is insecure and provide experimental results on the performance of our program that cracks this cipher.
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A Trivium-Inspired Pseudorandom Number Generator with a Statistical Comparison to the Randomness of SecureRandom and Trivium
… of two CSPRNGs: Trivium, a hardware-based stream cipher designed for constrained computing environments, and OpenJDK SecureRandom, a traditional CSPRNG recommended for Java programs that include a cryptographic algorithm. Our contributions are Quadrivium, a PRNG inspired by Trivium and …
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NON-LINEAR PSEUDORANDOM BIT GENERATION BY COMBINING BLUM BLUM SHUB AND LINEAR FEEDBACK SHIFT REGISTER SEQUENCES
… too slow for many practical uses as a stream cipher. Future work could focus on methods to increase the speed of the generator without a loss of excellent cryptographic properties.
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STRENGTH EVALUATION OF CRYPTOGRAPHIC PRIMITIVES TO LINEAR, DIFFERENTIAL AND ALGEBRAIC ATTACKS.
… different kinds of cryptanalysis for symmetric ciphers, differential, linear and algebraic, applying them to several symmetric ciphers, from the older ones to the most modern. The algebraic approach consists in solving a polynomial system of equations representing a cryptographic primitive and …
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Design And Hardware Implementation Of A Novel Scrambling Security Algorithm For Robust Wireless Local Area Networks
… which is a popular wireless secure communication stream cipher protocol approach to network security used to protect link-layer communications from eavesdropping and other attacks. It allows user to communicate with the user; sharing the public key over a network. It provides authentication and …
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Adaptive chosen all inputs model for analyzing key derivation functions against bit-flip and timing side-channel attacks
… attack. The result showed that only the stream cipher based KDF is vulnerable to the bit-flipping attack. However, all the existing KDFs are vulnerable to the timing side-channel attack. Finally, this research conducts the practical timing side-channel attack on KDFs that are constructed …
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Analysis of Lightweight Cryptographic Primitives
… viable. The next primitive proposed is a block cipher combination technique based on Galois Extension Field multiplication. Using any PRNG to produce the pseudorandom stream, the block cipher combination technique generates a variable sized key matrix to encrypt plaintext. Electronic Codebook …
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Hardware Implementations for Symmetric Key Cryptosystems
… of two members of the Welch-Gong (WG) family of stream ciphers, the WG$left(29,11right)$ and WG-$16$, are considered for the mobile communications domain. Optimizations in the WG$left(29,11right)$ stream cipher are considered when the $GFleft(2^{29}right)$ elements are represented in either the …
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Stream ciphers and linear complexity
… the mathematical analysis of the security of stream ciphers. Firstly, we will introduce the background ofstream ciphers with their design principles and theoretical security from the information theory viewpoint. Then we will introduce thealgebraic tools for the analysis of linear recurring …
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Cryptanalysis of Selected Stream Ciphers
… some cryptanalytical results on a selection of stream ciphers. We have grouped theory and results into three main parts. The first part focuses on the FCSR-based constructions X-FCSR and F-FCSR-H v3. For the X-FCSR family of stream ciphers we perform a severe state recovery attack. This attack …
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Webová aplikace pro šifrování souborů
Bakalářská práce se zabývá vytvořením webové aplikace pro šifrování souborů. V teoretické části jsou symetrické šifrovací algoritmy rozděleny na blokové a proudové. Vybrané šifry jsou popsány a jejich vlastnosti srovnány. Dále jsou rozebrány operační módy využívané blokovými šiframi. Vytvořená …