#!/usr/bin/env python3

import csv
import hashlib
import random
import string
import sys


SALT_LENGTH = 2
CSV_DELIMITER = ','
CSV_QUOTECHAR = '"'


def anonymize_email(email):
    salt = ''
    for i in range(0, 2):
        salt += random.choice(string.printable)

    return hashlib.sha1((salt + email).encode('ascii')).hexdigest()


def main():
    dump_in = csv.reader(sys.stdin,
                         delimiter=CSV_DELIMITER, quotechar=CSV_QUOTECHAR)
    dump_out = csv.writer(sys.stdout,
                          delimiter=CSV_DELIMITER, quotechar=CSV_QUOTECHAR)
    for (person_id, name, email) in dump_in:
        anon_email = anonymize_email(email)
        dump_out.writerow([person_id, name, anon_email])


if __name__ == '__main__':
    main()