SpiceCrypt: A Python library for decrypting LTspice encrypted model files

luu 21 points 2 comments March 15, 2026
github.com · View on Hacker News

Discussion Highlights (2 comments)

userbinator

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

rshm

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.

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