AN IMPROVED GEO-ENCRYPTION ALGORITHM IN LOCATION BASED SERVICES

An Improved Geo-encryption Algorithm in Location Based Services

Wireless technology is used in many applications with location based data encryption techniques to secure the communication. The use of knowledge of the mobile user's location called Geo-encryption, produces more secure systems that can be used in different mobile applications. Location Based Data Encryption Methods (LBDEM) is a technique used to enhance the security of such applications called...

Modelling Geo Data for Location-based Services

fault location in power distribution networks using matching algorithm

چکیده رساله/پایان نامه : تاکنون روش‏های متعددی در ارتباط با مکان یابی خطا در شبکه انتقال ارائه شده است. استفاده مستقیم از این روش‏ها در شبکه توزیع به دلایلی همچون وجود انشعاب‏های متعدد، غیر یکنواختی فیدرها (خطوط کابلی، خطوط هوایی، سطح مقطع متفاوت انشعاب ها و تنه اصلی فیدر)، نامتعادلی (عدم جابجا شدگی خطوط، بارهای تک‏فاز و سه فاز)، ثابت نبودن بار و اندازه گیری مقادیر ولتاژ و جریان فقط در ابتدای...

An Improved Public Key Encryption Algorithm Based on Chebyshev Polynomials

This paper proposes an improved public key encryption algorithm based on Chebyshev polynomials. On the base of the semi-group property of Chebyshev polynomials, we import the alternative multiply coefficient i K to forge the ciphertext tactfully which can make the cipher text-only aattack out of work. The chosen of i K is decided by the value of ( ( )) mod r s T T x N , and the number of i K ca...

An Improved Piecewise Linear Chaotic Map Based Image Encryption Algorithm

An image encryption algorithm based on improved piecewise linear chaotic map (MPWLCM) model was proposed. The algorithm uses the MPWLCM to permute and diffuse plain image simultaneously. Due to the sensitivity to initial key values, system parameters, and ergodicity in chaotic system, two pseudorandom sequences are designed and used in the processes of permutation and diffusion. The order of pr...