Evolution of bag algorithms: Why Ripemd-160 was chosen before Sha-1
Two popular bags of bags: Sha-1 and Ripemd-160 were widely accepted in the first days of blockchain technology. Although both algorithms have their strengths and weaknesses, they differ in several main aspects that led to the choice.
Sha-1: old algorithm
SHA-1 (Safe Bag Algorithm 1) 2000 introduced by Ronald Rivest and others. It was designed as fast and efficient data integrity, which makes it a popular choice for various programs. However, SHA-1 restrictions were soon obvious. The values of his bag are relatively high, so that the collisions can be vulnerable (different inputs that create the same output). As a result, it was inadequate for cryptographic purposes.
Ripemd-160 carpet
1995 J.C. Kelsey and Ronald Rivest have developed the RIPEMD -160 -safe chipper feature, specially designed for the integrity of notifications. It has been introduced to solve SHA-1 restrictions to ensure stronger security and resistance. One of the main advantages of RIPEMD-160 is the shorter size of the exit compared to SH-1.
Solution between Sha-1 and Ripemd-160
2014 The Working Group for Internet Engineering (IETF) voted in favor of Sha-1 withdrawal with safer alternatives, such as SHA-256. The solution was based on several factors:
* Collision resistance : SHA-1 vulnerability has made it less suitable for cryptographic purposes.
* Key size restrictions : Sha-1 requires a 160-bit key that is not sufficient in certain cases of use.
Why was Ripemd-160 chosen
Although the transition from Sha-1 to Sha-256 was inevitable, the decision to make Ripemd-160 reflects its unique strengths as a secondary choice. Here are some reasons why:
* Shorter values of the bag : Ripemd-160 creates shorter values of the bag compared to SHA-1, which makes it more efficient in certain cases of use.
* Improved security : Ripemd-160 cryptographic properties provide stronger protection against attacks and vulnerabilities.
* Compatibility with existing systems : Many organizations have already invested in RIPEMD-160 implementations to ensure a smooth transition.
The effect of options
Although the SHA-1 is no longer widely accepted, its inheritance continues to influence the development of safe bag functions. The choice between Sha-256 and other alternatives, such as Sha-3 (such as Keccak), led to a more efficient and safer algorithm in the context of cryptographic programs.
In conclusion, the RIPEMD-160 selection through Sha-1 reflects its strengths as an integrity algorithm, including shorter exit dimensions, improved safety and compatibility with existing systems. This solution emphasizes the importance of evaluating the different functions of the bag, taking into account their specific requirements of use and safety.
