Method for performing a cryptographic task in an electronic hardware component

摘要

A method and apparatus are provided to perform a cryptographic task on at least one numerical datum in an electronic hardware component. The method includes a step of at least partial use of an encryption function. This encryption function includes a basic encryption function obtained by the addition between an intermediate function arising from composition of a coding function with a first function, and a second function. This method can be applied to the encryption of a datum or to the decryption of a datum. Also, a method is provided for generating a public key and a device able to implement one of these methods.

主权项

1. A method for performing a cryptographic task on at least one numerical datum, said method comprising:
a step of at least partial use of a cryptographic function in an electronic hardware component as an asymmetric cryptographic public key, wherein the cryptographic function comprises a basic encryption function obtained by the addition between:
an intermediate function derived from composition of an error-correcting coding function with a first function, wherein the first function is a polynomial function of degree df greater than or equal to two,and a second function, wherein the second function is a polynomial function of degree dE greater than or equal to two; a step of converting between the at least one numeric datum and at least one encrypted numeric datum by applying the cryptographic function.