关键词: 密码, 多模态, 无序交融输入, 金融交易系统, 身份认证

Abstract: In financial transactions, some safety and reliability problems exist in the client authentication system with single keyboard password mode. To solve these problems, the password multimodality method was proposed. Modal sensors accessed the password codeword information and transmitted its normalized result. The formatted code information was pre-processed in property and then classified by its attributes. After that, the multimode passwords were fused through sharing public units. For a certain M bits password, if each bit had N kinds of possible modals, the password theft rate was 1/(10MCN×MM). In this multimode input system, the keyboard password and black box handwriting are the two default modals, and the application results demonstrate that the proposed method realizes the disordered blending input of multimodal password codeword. At M=6, the password theft rate is 1/(106C2×66), and the method types and difficulty of cracking those passwords increase with the number of modals. The password input system's safety, reliability and other performances are significantly better than those with only one modal.

Key words: password, multimodal, disordered blending input, financial transaction system, identity authentication