SpiceCrypt: A Python library for decrypting LTspice encrypted model files

rshm 2 hours ago | parent | next [-]

Coming from a brief failed attempt of using ghidra to see if keys were part of binary, this is a welcome news.

Next on wishlist is someone doing the same for encrypted fpga verilog blobs.

userbinator 3 hours ago | parent | prev | next [-]

The file header contains two 32-bit keys used to derive a substitution table index and step value for decryption.

In other words, obfuscation.

snthpy an hour ago | parent | prev [-]

What is LTspice?

	▲	flowerthoughts 20 minutes ago \| parent [-]
		It's one of the most widely used electronic circuit simulator. It's basically a graphical interface to wire up differential equations, together with physical models of components (mostly semiconductors.) There are other SPICE implementations, but Linear Technologies provides this program for free, and lots of manufacturers provide LTspice models for their components (of varying quality.)