What is a recognized unsafe hash algorithm?

1, species MD5:MD5 has been proved to be unsafe. Attackers can easily generate data different from the original data but with the same MD5 value, which is called MD5 collision attack. Sha- 1: Sha- 1 has also been proved unsafe.

2. MD5. According to the implementation information of SM3 hash algorithm, we know that SM3 hash algorithm is famous, such as MD5, SHA- 1, but some of them, such as MD5, have been proved to be unsafe, so we must use the currently recognized excellent encryption algorithm in the actual use process.

3. However, some hash algorithms have been considered unsafe because they have some loopholes or are easily attacked by attackers. For example, MD5 and SHA- 1 algorithms have been proved to be unsafe because they are easily cracked by attackers. SHA-2 algorithm is considered to be relatively safe, but it also has some loopholes and attacks.

4. A series of algorithms represented by SHA- 1 Because the attacker can tamper with the message and the hash value together when the transmission channel is unsafe, and a series of algorithms represented by SHA- 1 are often used with the key to generate the hash value MAC, which makes a series of algorithms represented by SHA- 1 considered as unsafe hash algorithms.

5.SM3 algorithm: SM3 hashing algorithm is a password hashing algorithm independently designed in China. It is suitable for the generation and verification of digital signatures and authentication codes and the generation of random numbers in commercial cryptographic applications, and can meet the security requirements of various cryptographic applications.