Analysis of a Modified RC4 Algorithm
نویسنده
چکیده
ABSTRACT In this paper, analysis of a simply modified RC4 algorithm is presented. RC4 is the most widely used stream cipher and it is not considered as a cipher that is strong in security. Many alternatives have been proposed to improve RC4 key generation and pseudo random number generation but the thoughts behind this work is to try out a simple modification of RC4’s PRGA, where we can mention like this:
منابع مشابه
Analysis of RC4 and Proposal of Additional Layers for Better Security Margin
In this paper, the RC4 Key Scheduling Algorithm (KSA) is theoretically studied to reveal non-uniformity in the expected number of times each value of the permutation is touched by the indices i, j. Based on our analysis and the results available in literature regarding the existing weaknesses of RC4, few additional layers over the RC4 KSA and RC4 Pseudo-Random Generation Algorithm (PRGA) are pr...
متن کاملStatistical weaknesses in 20 RC4-like algorithms and (probably) the simplest algorithm free from these weaknesses - VMPC-R
We find statistical weaknesses in 20 RC4-like algorithms including the original RC4, RC4A, PC-RC4 and others. This is achieved using a simple statistical test. We found only one algorithm which was able to pass the test VMPC-R. This algorithm, being approximately three times more complex then RC4, is probably the simplest RC4-like cipher capable of producing pseudo-random output.
متن کاملNovel Hardware Implementation of Modified RC4 Stream Cipher for Wireless Network Security
This paper presents novel hardware implementation of modified RC4 stream cipher for wireless network security. The Modified RC4 algorithm proposes two changes in conventional RC4 stream cipher algorithm, one in Key Scheduling Algorithm (KSA) stage and other in Pseudorandom Generation Algorithm (PRGA) stage. This modification in KSA removed many weakness and produces random states, so that it wi...
متن کاملHardware Implementation of Modified RC4 Stream Cipher Using FPGA
— In this project work, an efficient hardware Implementation of modified RC4 stream-cipher is proposed. In contrary to previous design, which requires four memories each of size 256 X 8, the proposed system can be implemented by using only two memories each of size 128 X 7. Due to the reduction in the memory size the strength of encryption can be increased. Design of RC4 stream cipher for data ...
متن کاملCompact High Speed Reconfigurable Hardware Implementation of RC4 Stream Cipher
RC4 Stream cipher is well known for its simplicity and ease to develop in software. But here, in the proposed design we have heighlighted the modified hardware implémentation of RC4. As RC4 is the most popular stream cipher. The proposed design performs reading and swapping simultaneously in one clock cycle. The proposed design also highlights the adder part which enhances the architecture spee...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- IACR Cryptology ePrint Archive
دوره 2014 شماره
صفحات -
تاریخ انتشار 2014