A keystroke dynamics anonymization technique that includes: receiving a plain-text password from a computer user; providing at least the plain-text password as a seed to a pseudorandom mapping function; applying the pseudorandom mapping function to keycodes that are produced by the computer responsive to keystrokes of the computer user, to map the keycodes to a set of mapped, anonymized keycodes; and providing the set of mapped, anonymized keycodes to a keystroke dynamics algorithm, to enable the keystroke dynamics algorithm to (a) learn a keystroke dynamics model of the computer user, and (b) authenticate an identity of the computer user.