Something about random and hashing MD5 and others

نویسنده

  • Juan Chamero
چکیده

Students use “random (101)” function with 101 as argument most times mechanically. However its comprehension will aid to use these types of functions more properly. As a mere “coincidence” we may notice that 101 is the closest number to the 100 prime number. Prime numbers are like “unbreakable” numbers, we can not “fold” them, and they can not be factorized except by themselves and by the unity besides. This characteristic make them appropriates as “seeds” in “pseudo random” generation, like those performed by LFSR’s.

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

BLAKE2: Simpler, Smaller, Fast as MD5

We present the hash function BLAKE2, an improved version of the SHA-3 finalist BLAKE optimized for speed in software. Target applications include cloud storage, intrusion detection, or version control systems. BLAKE2 comes in two main flavors: BLAKE2b is optimized for 64-bit platforms, and BLAKE2s for smaller architectures. On 64bit platforms, BLAKE2 is often faster than MD5, yet provides secur...

متن کامل

General Graph Identification By Hashing

A method for identifying graphs using MD5 hashing is presented. This allows fast graph equality comparisons and can also be used to facilitate graph isomorphism testing. The graphs can be labeled or unlabeled. The method identifies vertices by hashing the graph configuration in their neighborhoods. With each vertex hashed, the entire graph can be identified by hashing the vertex hashes.

متن کامل

Towards Realizing Random Oracles: Hash Functions That Hide All Partial Information

The random oracle model is a very convenient setting for designing cryptographic protocols. In this idealized model all parties have access to a common, public random function, called a random oracle. Protocols in this model are often very simple and efficient; also the analysis is often clearer. However, we do not have a general mechanism for transforming protocols that are secure in the rando...

متن کامل

Keyed Hash Functions

We give a new deenition of keyed hash functions and show its relation with strongly universal hash functions and Cartesian authenti-cation codes. We propose an algorithm for a secure keyed hash function and present preliminary result on its performance. The algorithm can be used for fast (about twice the speed of MD5) and secure message authentication.

متن کامل

A secured Cryptographic Hashing Algorithm

Cryptographic hash functions for calculating the message digest of a message has been in practical use as an effective measure to maintain message integrity since a few decades. This message digest is unique, irreversible and avoids all types of collisions for any given input string. The message digest calculated from this algorithm is propagated in the communication medium along with the origi...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2006