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<h1>modexpng_fpga_model</h1>

<p>Math model of ModExpNG IP core. The model mimics how an FPGA does modular exponentiation.</p>

<p>First use the scripts from the <code>vector/</code> folder to generate and format a keypair vector, then edit the <i>DUMP_*</i> switches in <code>modexpng_fpga_model.py</code> to dump the desired internal values. The <i>FORCE_OVERFLOW</i> setting artificially forces the virtually neven seen internal interim overflow situation and allows its handler to be tested. You can also un-comment the _#c.dump_banks()_ line and move it anywhere within _sign_using_crt()_ and/or _sign_without_crt()_ to dump the contents of entire core's memory.</p>
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