GeneratorsLesson 43Free preview

Hash Generator

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Summary

Hash Generator converts the input to a hash value of fixed length through a one-way function. The same input always produces the same hash, but the hash cannot be reversed into the original text. Any slight change in input usually results in a very different hash, so the hash is useful for checking file integrity. For passwords, use special algorithms like bcrypt or Argon2 with salt, not MD5 or SHA-1.

Key points

The hash function is one-way and produces a fixed output length
The same input always produces the same hash.
Small changes in input drastically change hash
MD5 and SHA-1 are no longer safe for security purposes.
Passwords should be hashed with bcrypt or argon2 and salt.

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