Sequential encryption method based on multi-key stream ciphers
US11165562B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 13, 2018 |
| Grant date | Nov 2, 2021 |
| Priority date | — |
| Expiry date | Mar 5, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L63/0457
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The invention discloses a sequential encryption method based on multi-key stream ciphers, comprising the following steps of: acquiring plaintext data, and storing the acquired plaintext data in the form of a circular linked list; storing a plurality of key sequences in the form of a circular linked list, respectively; performing a bitwise operation on the key sequences according to a specified starting bit to generate a stream random sequence; and, reconstructing the plaintext data according to the stream random sequence to generate encrypted ciphertext data. The method of the invention is simple in encryption and decryption, difficult to decipher, easy to implement by a computer without auxiliary hardware devices, fast in encryption and decryption speed, strong in the diffusion property of the generated ciphertext, and good in anti-interception performance and the like.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.