cl-pass
cl-pass is a password hashing and verification library. In Quicklisp.

Usage:

cl-user> (cl-pass:hash "test")
"PBKDF2$sha256:20000$5cf6ee792cdf05e1ba2b6325c41a5f10$19c7f2ccb3880716bf7cdf999b3ed99e07c7a8140bab37af2afdc28d8806e854"
cl-user> (cl-pass:check-password "test" *)
t
cl-user> (cl-pass:check-password "nope" **)
nil

See also cryptography