{'fraction_non_alphanumeric': 0.018518518518518517, 'fraction_numerical': 0.0, 'mean_word_length': 5.324675324675325, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Robust User Password Change Scheme based on the Elliptic Curve Cryptosystem

In this paper, an efficient user password change scheme based on the elliptic curve discrete logarithm problem (ECDLP) is presented. In contrast to the existing password change schemes using a server's public key, the proposed scheme can securely update user passwords without a complicated process and server's public key, and also provides explicit key authentication in the case of a session key agreement.