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verilogA encryption for spectre

Fabb

Hello,

 

I would like to encrypt a compact analog model written in verilogA and executed with spectre and ultrasim.

In the spectre doc, I found that a netlist could be encrypted wtih

spectre_encrypt [-i input_file] [-o output_file] [-all]

but what about a verilogA file?

 Regards,

 

Fabrice

Parents

  • Hello there,

    I have encrypted a simple verilog file using "spectre_encrypt" command.

    When i try to simulate it using "spectre" , it gives pragma error.

    ERROR (VACOMP-1588): "verilog_enc_line.v", line 12: Could not decrypt the encrypted file.
    invalid or unknown or incomplete pragma specification 'NO ERROR'
    Check that the encryption key is valid and that the version of the encryptor for this file is compatible with (not
    newer than) the version of the decryptor.
    ERROR (VACOMP-1588): "Error: unexpected EOF or end of line//pragma protect begin_protected"
    "verilog_enc_line.v", line 13: Could not decrypt the encrypted file.
    invalid or unknown or incomplete pragma specification 'invalid or unknown or incomplete pragma specification 'NO
    ERROR''
    Check that the encryption key is valid and that the version of the encryptor for this file is compatible with (not
    newer than) the version of the decryptor.

    My "run Simulation" file looks like below.

    rsim (a b) simpleres
    simulator lang = spectre
    ahdl_include "verilog_enc_line.v"
    tran tran stop=10n errpreset=conservative write="spectre.ic" writefinal="spectre.fc" annotate=status maxiters=5

    Any help is appreciated.

    Thanks & Regards,

    Amar

  • in reply to Amar Kumar

    Hi Amar,

    You can't use spectre_encrypt for Verilog-A; this is for encrypting spectre netlists. For Verilog-A you need to use the xmprotect (ncprotect in older versions) that's in <SPECTREinstDir>/tools.lnx86/bin as described in this article: How can I encrypt a verilogA module ?

    In essence, something like:

    xmprotect -extension vap -language vlog -autoprotect mymodule.va

    Andrew.

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