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Added salt definition in README.md #1223

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9 changes: 9 additions & 0 deletions README.md
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Expand Up @@ -317,6 +317,15 @@ Resultant hashes will be 60 characters long and they will include the salt among
- 16-byte (128-bit) salt, base64 encoded to 22 characters
- 24-byte (192-bit) hash, base64 encoded to 31 characters

### What is a Salt?
A salt is a random value that is added to a password before hashing.

It ensures that:
- The same password does not produce the same hash every time
- Precomputed attacks like rainbow tables become ineffective

bcrypt automatically generates and stores the salt as part of the hash, so you do not need to manage it manually.

Example:
```
$2b$10$nOUIs5kJ7naTuTFkBy1veuK0kSxUFXfuaOKdOKf9xYT0KKIGSJwFa
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