Information privacy and identity authentication method and digital signature program

Abstract

The invention provides an information privacy and identity authentication method and a digital signature program, which relate to the technical filed of computer software, network communication and information safety and are particularly used for the information privacy of instant messaging, electronic mails and file information. A symmetrical cryptographic algorithm and an unsymmetrical cryptographic algorithm are combined, and a key ciphertext and an information ciphertext form a complex ciphertext. The effect of text confidentiality and sharing is reached through the integration of effects of multiple keys, and the effect of text confidentiality interlocking is realized through the effect of the combination of multiple keys. The signature is used for challenging the response mechanism, more than two cipher devices are compatible, the effect of automatic identification distinction and / or self-customization by users can be realized, and the identity authentication is more flexible and complete. A convenient and practical data signature program is also designed, and the convenient and practical data signature program assists a target program for use and runs independently for realizing the instant signature and the instant verification on window text information.

Description

Technical field [0001] The invention relates to the technical fields of computer software, network communication and information security. Background technique [0002] Information often involves the confidentiality, privacy, and property of institutions and individuals; in the network environment, especially in the Internet environment, these important information can easily be stolen and leaked, leading to irreparable losses. Therefore, information confidentiality has become a common concern. The basic technical idea of ​​information confidentiality is to use a certain cryptographic algorithm combined with a key to encrypt the plain text of the information that needs to be kept secret, and generate garbled cipher text. There are many kinds of current practical cryptographic algorithms, some of which have already become technical standards, such as DES, AES, RSA, DSA, etc. Information is most likely to be leaked in the link of input, storage and transmission, and the encryptio...

AI Technical Summary

Problems solved by technology

This invention emphasizes the flexibility of selection, but there are several deficiencies: first, the operation efficiency is low, and after the selection, it needs to be marked and a password is set; The symmetric encryption algorithm AES is adopted, and the password is hidden in the ciphertext, so the risk of key leakage due to exchange is high

"Login authentication method" (Chinese Invention Patent Application No. 200810109084.7), proposed that under the challenge response mechanism, it is compatible with two methods of password authentication and signature authentication to allow users to choose independently. Hardware diversity support is not considered

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