发明名称 |
METHOD AND APPARATUS FOR PUBLIC-KEY ENCRYPTED COMMUNICATION |
摘要 |
A method and an apparatus for public-key encrypted communication includes: encrypting, by a first device, random information according to a first public key to obtain a first ciphertext; encrypting, by the first device, plaintext information according to a second public key to obtain a second ciphertext, where the plaintext information is unencrypted data to be sent by the first device to a second device, the first public key is represented in a form of a polynomial, the first public key is obtained through calculation on a truncated polynomial ring according to system parameters, the second public key is represented in a form of a polynomial, the second public key is randomly selected on a truncated polynomial ring, and the random information is randomly selected on a truncated polynomial ring; and sending, by the first device, the first ciphertext and the second ciphertext to the second device. |
申请公布号 |
US2016119120(A1) |
申请公布日期 |
2016.04.28 |
申请号 |
US201514985942 |
申请日期 |
2015.12.31 |
申请人 |
HUAWEI TECHNOLOGIES CO.,LTD. |
发明人 |
Wang Baocang;Lei Hao;Hu Yupu |
分类号 |
H04L9/06;H04L9/30;H04L9/14 |
主分类号 |
H04L9/06 |
代理机构 |
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代理人 |
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主权项 |
1. A method for public-key encrypted communication, comprising:
encrypting, by a first device, random information according to a first public key, to obtain a first ciphertext; encrypting, by the first device, plaintext information according to a second public key to obtain a second ciphertext, wherein the plaintext information is unencrypted data to be sent by the first device to a second device, the first public key is represented in a form of a polynomial, the first public key is obtained through calculation on a truncated polynomial ring according to system parameters, the second public key is represented in the form of the polynomial, the second public key is randomly selected on a truncated polynomial ring, and the random information is randomly selected on a truncated polynomial ring; and sending, by the first device, the first ciphertext and the second ciphertext to the second device. |
地址 |
Shenzhen CN |