METHOD FOR EXECUTING A MACHINE CODE OF A SECURE FUNCTION

    公开(公告)号:US20200257805A1

    公开(公告)日:2020-08-13

    申请号:US16603786

    申请日:2018-03-20

    IPC分类号: G06F21/60 G06F9/30 G06F9/32

    摘要: This execution method comprises the supplying of the machine code, this machine code being formed by a succession of base blocks, each base block being associated with a signature and comprising instructions to be protected, each instruction to be protected being immediately preceded or followed by an instruction for constructing the value of the signature associated with this base block, wherein: each construction instruction is coded on strictly less than N bits, and each word of the machine code which comprises at least one portion of one of said instructions to be protected also comprises one of said construction instructions so that it is not possible to load an instruction to be protected into an execution file, without at the same time loading a construction instruction which modifies the value of the signature associated with this base block when it is executed.

    Terahertz laser source and method for emitting terahertz radiation

    公开(公告)号:US10732484B2

    公开(公告)日:2020-08-04

    申请号:US16472162

    申请日:2017-12-22

    发明人: Mohand Ouali Acef

    IPC分类号: G02F1/35 H01S3/00

    摘要: A THz laser source includes a first generator suitable for emitting at least one first light emission and one second light emission of frequencies that are multiples of a first reference frequency; a second generator suitable for emitting at least one first light emission and one second light emission of frequencies that are multiples of a second reference frequency different from the first reference frequency; the THz laser source furthermore comprises a nonlinear crystal suitable for forming, from the first light emissions emitted by each of the first and second generators, a THz light emission generated by difference-frequency generation, of frequency comprised between 0.3 THz and 10 THz; and at least one first frequency-stabilizing module allowing the frequency of one of the second emissions emitted by one of the first and second generators to be stabilized to an atomic transition.