Combination of columnar transposition cipher caesar cipher and lempel ziv welch algorithm in image security and compression
نویسندگان
چکیده
منابع مشابه
Data Compression on Columnar-Database Using Hybrid Approach (Huffman and Lempel-Ziv Welch Algorithm)
Columnar Oriented Database is an enhance approach to service to service the needs of Business Intelligence. A Columnar Oriented Database Management system that stores content by columns rather than the row. This type of data differs from traditional database with regards to performance, storage requirements and easy to modification of the schema. One of the major advantage of column based datab...
متن کاملImproving Security of Vigenère Cipher by Double Columnar Transposition
Protecting data from malicious attacks during storage and transmission is the reason for using encryption. Encryption can be achieved by two methods – Transposition and Substitution. Transposition refers to changing the order of characters in a given text. On the other hand, substitution is the process of replacing each character of the plaintext with some other character. Using a combination o...
متن کاملParallel Lempel-Ziv-Welch (PLZW) Technique for Data Compression
Data Compression is one of the most fundamental problems in computer science and information technology. Many sequential algorithms are suggested for the problem. The most well known sequential algorithm is Lempel-ZivWelch (LZW) compression technique. The limitation of sequential algorithm is that ith block can be coded only after the (i-1)th block has completed. This limitation can be overcome...
متن کاملLempel-Ziv Dimension for Lempel-Ziv Compression
This paper describes the Lempel-Ziv dimension (Hausdorff like dimension inspired in the LZ78 parsing), its fundamental properties and relation with Hausdorff dimension. It is shown that in the case of individual infinite sequences, the Lempel-Ziv dimension matches with the asymptotical Lempel-Ziv compression ratio. This fact is used to describe results on Lempel-Ziv compression in terms of dime...
متن کاملA Hybrid Cryptosystem Based On Vigenere Cipher and Columnar Transposition Cipher
Privacy is one of the key issues addressed by information Security. Through cryptographic encryption methods, one can prevent a third party from understanding transmitted raw data over unsecured channel during signal transmission. The cryptographic methods for enhancing the security of digital contents have gained high significance in the current era. Breach of security and misuse of confidenti...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Physics: Conference Series
سال: 2019
ISSN: 1742-6588,1742-6596
DOI: 10.1088/1742-6596/1339/1/012007