An encryption method and device

Abstract

The present invention provides an encryption method and apparatus. The objective of the invention is to solve the problem that an encryption mode in the prior art may reduce the security of stored standard passwords. The method includes the following steps that: a plaintext character string is acquired; the acquired plaintext character string is encrypted through adopting at least two kinds of encryption algorithms, so that at least two corresponding ciphertext character strings can be obtained; characters are intercepted from each kind of obtained ciphertext character strings; and the encryption result of encryption performed on the plaintext character string can be obtained according to the intercepted characters. The encryption result obtained by using the above method contains the ciphertext character strings obtained after the encryption is performed with the different encryption algorithms, and the ciphertext character strings contained in the encryption result are not complete ciphertext character strings, but the incomplete intercepted character strings, and therefore, the encryption method can assist in effectively preventing the encryption result from being subjected to collision attack, violent attack or rainbow table comparison attack compared with an encryption method according to which a single encryption algorithm is adopted to perform encryption to obtain complete ciphertext character strings, and therefore, the security of the encryption result can be improved.

Description

technical field

[0001] The present application relates to the field of computer technology, in particular to an encryption method and device. Background technique

[0002] With the rapid development of the information age, terminals such as personal computers (PCs), smart phones, and tablet computers can provide users with more and more conveniences, and information security has gradually become the focus of people's increasing attention. .

[0003] Verification is a common method to ensure information security. The main method is: set a standard password in advance, and save the standard password by the terminal or server. During verification, the user enters the password to be authenticated, and the terminal or server compares the standard password with the The password to be authenticated, if the two are consistent, the verification passes, otherwise, the verification fails.

[0004] In order to ensure the security of the standard passwords stored in the terminal or ser...

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