Interface unit for fully homomorphic encryption chip

Abstract

The invention discloses an interface unit for a fully homomorphic encryption chip. The interface unit comprises an encryption interface, a decryption interface and a cipher text operation interface. The encryption interface is used for encrypting data of a data owner to generate cipher texts and transmitting the cipher texts to a data processor. The cipher text operation interface is used for receiving the cipher texts from the data processor to operate the cipher texts and transmitting the operated cipher texts to the data owner. The decryption interface is used for receiving the operated cipher texts from the data owner, decrypting the cipher texts to generate plain texts, and transmitting the plain texts to the data owner. The encryption interface comprises a first integer sub-interface and a first real sub-interface, wherein the first integer sub-interface is used for encrypting plain text integers and plain text unsigned integers, and the first real sub-interface is used for encrypting plain text real numbers, plain text floating numbers, plain text double-precision floating numbers and plain text format real numbers. The interface unit for the fully homomorphic encryption chip can complete arithmetic operation, relation comparison operation and logical operation under encryption and can guarantee information safety.

Description

technical field [0001] The invention belongs to the field of information security cryptography, and more specifically relates to an interface of a fully homomorphic encryption chip. Background technique [0002] In 1978, R.Rivest and others proposed the concept of "full homomorphic encryption". In 2009, C. Gentry theoretically designed a fully homomorphic encryption scheme based on ideal lattices. This scheme can be regarded as a special public key cryptosystem. It only solves the encryption and decryption of positive integers, and completes the addition and multiplication operations in the secret state. [0003] However, up to now, in the field of information security cryptography, the fully homomorphic encryption algorithm has not been manufactured into a chip and provided with a user interface, and companies engaged in cloud computing and cloud storage cannot truly realize the encryption of positive and negative integers and various types of real data. Encryption and de...

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Problems solved by technology

[0003] However, up to now, in the field of information security cryptography, the fully homomorphic encryption algorithm has not been manufactured into a chip and provided with a user interface, and companies engaged in cloud computing and cloud storage cannot truly realize the encryption of positive and negative integers and various types of real data. Encryption and decryption of type numbers, and complete various arithmetic operations, relational comparison operations, and logic operations in a secret state, so that the security of information in finance, banking, securities, insurance, hospitals and other industries cannot be guaranteed. malicious person steals

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