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About node.js : SHA256-CRYPT-SHA512-CRYPT-in-nodejs

Question Detail

I use dovecot as my mail transfer agent and I aim to use the strongest password scheme which is supported by my system: SHA512-CRYPT or SHA256-CRYPT (BLF-CRYPT doesn’t work).

For my own written webinterface I look for a function or library in node.js for hashing a password (with SHA***-CRYPT).

Question Answer

You may consider checking: https://github.com/mvo5/sha512crypt-node which contains a implementation for sha512crypt in JS. Its very new but passes the testvectors from the glibc reference implementation.

Check out my fork of shacrypt – a Node.js addon that supports SHA-256 crypt and SHA-512 crypt password hashing.

I extended it to:

  • Support asynchronous operation where computation is performed in Node.js’s libuv thread pool, so it won’t block the event loop.

  • Allow the module to be built under Windows

You will need to have C++ build tools installed on your system to successfully install the package. If you are running under Windows, you can download Microsoft’s Build Tools for Visual Studio 2017.

Link:
https://github.com/vlasky/shacrypt

Have you seen this page:
cryto.createHash sha512 with hexDigest input type

You can use crypto.createHash function, but why SHA512? Are you sure you need it for your website?

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