The second argument is the number of rounds to use when generating a salt. Thus, while the sync version is more convenient, it's best to stick with async if you're concerned about performance. When a user presents the password, such as for login, call BCryptVerify to verify the password against the stored bcrypt hash. The asynchronous approach is recommended because hashing is CPU intensive, and the synchronous version will block the event loop and prevent your app from handling other requests until it finishes. (Node.js) BCrypt Verify a Password (Check if Password is Correct) A system that uses BCrypt for storing passwords would not store the actual password, but would instead store the bcrypt hash of the password. Then include it like this: const bcrypt = require('bcrypt') īcrypt supports both sync and async methods. To use the library, simply install with NPM: npm install -save bcrypt For a brief explanation of why we use one-way hashes instead of encryption, check out this answer on StackOverflow. If you're coming from a PHP background, these are roughly equivalent to password_hash() and password_verify().īcrypt is the de facto way to hash and store passwords. The bcrypt library on NPM makes it really easy to hash and compare passwords in Node.
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