tweetnacl
Port of TweetNaCl cryptographic library to JavaScript
jose
JWA, JWS, JWE, JWT, JWK, JWKS for Node.js, Browser, Cloudflare Workers, Deno, Bun, and other Web-interoperable runtimes
aes-js
A pure JavaScript implementation of the AES block cipher and all common modes of operation.
hashids
Generate YouTube-like ids from numbers. Use Hashids when you do not want to expose your database ids to the user.
md5-o-matic
Fast and simple MD5 hashing utility with zero module dependencies. View MD5 Shootout results, http://jsperf.com/md5-shootout/39