Results 1 to 10 of about 6,241,434 (232)

Improved known-plaintext attack to permutation-only multimedia ciphers [PDF]

Information Sciences, 2018
Abstract Permutation is a commonly used operation in many secure multimedia systems . However, it is fragile against cryptanalysis when used alone. For instance, it is well-known that permutation-only multimedia encryption is insecure against known-plaintext attack (KPA).
Yushu Zhang, Leo Yu Zhang, Jiantao Zhou   +2 more
exaly   +4 more sources

On Known-Plaintext Attacks to a Compressed Sensing-Based Encryption: A Quantitative Analysis [PDF]

IEEE Transactions on Information Forensics and Security, 2015
Despite the linearity of its encoding, compressed sensing may be used to provide a limited form of data protection when random encoding matrices are used to produce sets of low-dimensional measurements (ciphertexts). In this paper we quantify by theoretical means the resistance of the least complex form of this kind of encoding against known-plaintext ...
Valerio Cambareri, Mauro Mangia, Fabio Pareschi, Riccardo Rovatti, Gianluca Setti   +4 more
semanticscholar   +7 more sources

A Simple Chaotic Map-Based Image Encryption System Using Both Plaintext Related Permutation and Diffusion [PDF]

Entropy, 2018
Recently, to conquer most non-plain related chaos-based image cryptosystems’ security flaws that cannot resist the powerful chosen/knownn plain-text attacks or differential attacks efficiently for less plaintext sensitivity, many plain related ...
Linqing Huang, Shuting Cai, Mingqing Xiao   +2 more
exaly   +4 more sources

Efficient Search Over Encrypted Medical Data With Known-Plaintext/Background Models and Unlinkability

IEEE Access, 2021
In advanced health care systems, patients’ medical data can be outsourced to cloud servers to enable remote healthcare service providers to access and analyze patients’ data from any location to provide better treatment.
Sherif Abdelfattah, Mohamed Baza, Mahmoud M. Badr, Mohamed M. E. A. Mahmoud, Gautam Srivastava, Fawaz Alsolami, Abdullah Marish Ali   +6 more
doaj   +2 more sources

Known-Plaintext Attack and Ciphertext-Only Attack for Encrypted Single-Pixel Imaging [PDF]

IEEE Access, 2019
In many previous works, a single-pixel imaging (SPI) system has been constructed as an optical image encryption system. Unauthorized users are not able to reconstruct the plaintext image from the ciphertext intensity sequence without knowing the ...
Shuming Jiao, Ting Lei, Yang Gao, Zhenwei Xie, Xiaocong Yuan   +4 more
doaj   +2 more sources

Security Evaluation of Y00 Protocol Based on Time-Translational Symmetry Under Quantum Collective Known-Plaintext Attacks

IEEE Access, 2021
In this paper, we concretely formulate to derive the attacker's success probability of obtaining the shared secret keys for the Y00 protocol under a combination of a quantum collective attack with infinitely-long known-plaintext, naming it “ ...
Takehisa Iwakoshi
doaj   +2 more sources

Known-plaintext attack to optical encryption systems with space and polarization encoding

Optics Express, 2020
Space-based optical encryption (SBOE) and double random polarization encoding (DRPO) are previously considered to be more secure than common random-phase-encoding-based optical cryptosystems. The known-plaintext attack (KPA) to SBOE and DRPO was seldomly investigated in the past.
Shuming, Jiao, Yang, Gao, Ting, Lei, Xiaocong, Yuan   +3 more
openaire   +3 more sources

Quantum cryptanalysis of SPN ciphers with known plaintext

npj Quantum Information
Key recovery attack on SPN ciphers such as AES is NP hard in complexity. Previous studies have estimated the quantum resources required for implementing Grover’s key search for AES, but these are largely theoretical in nature.
Uroosa Kiran, Aneela Safdar, Saif Ullah Khalid, Hammad Tanveer Butt, Zunera Jalil   +4 more
doaj   +2 more sources

Known‐plaintext attack on secure kNN computation on encrypted databases [PDF]

Security and Communication Networks, 2014
ABSTRACTTo protect user privacy and data security in cloud computing, a secure k‐nearest neighbor computation‐enhanced scheme on encrypted database has been proposed by Wong, Cheung, Kao and Mamoulis. The scheme is proven resistant to the known‐plaintext attack.
Chunsheng Gu, Jixing Gu
openaire   +2 more sources

A Known-Plaintext Attack on Two-Key Triple Encryption [PDF]

International Conference on the Theory and Application of Cryptographic Techniques, 1991
A chosen-plaintext attack on two-key triple encryption noted by Mcrkle and Hellman is extended to a known-plaintext attack. The known-plaintext attack has lower memory requirements than the chosen-plaintext attack, but has a greater running time. The new attack is a significant improvement over a known-plaintext brute-force attack, but is still not ...
Paul C. van Oorschot, Michael J. Wiener
openaire   +2 more sources