Developed and released the Passe library in the ocaml/opam-repository, delivering secure password hashing and verification capabilities for OCaml projects. The initial release focused on cryptography and security, implementing both Bcrypt and Argon2 algorithms to provide robust hash and verify APIs. By exposing these APIs, the work established a foundational security feature for password storage and authentication across downstream applications. The release included comprehensive documentation of initial capabilities and was linked to a specific commit for traceability. This contribution strengthened the security baseline for OCaml projects, leveraging expertise in library development, cryptography, and secure authentication practices.