pip install hexlock

import hexlock

# ephemeral — no key needed, deanonymize in the same session
client = hexlock.Client()
anonymized = client.anonymize(
    "You can each me at jane.smith@acme.com or 415-555-0192."
)
original = client.deanonymize(llm_response)

# persistent — save and restore across sessions
key = hexlock.generate_key()  # store this securely
client = hexlock.Client(key=key)
anonymized = client.anonymize(
    "My credit card number is 4111 1111 1111 1111"
)
blob = client.save_session()  # store this alongside your key

# later, in a new process
client = hexlock.Client(key=key, session=blob)
original = client.deanonymize(llm_response)