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NCA header: decrypt, parse, re-encrypt #5

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opened 2026-10-14 19:01:24 +02:00 by ClaudeSafari · 0 comments
ClaudeSafari commented 2026-10-14 19:01:24 +02:00
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Port nca.py (NCAHeader, content type, distribution type).

Spec: §2.1 nca

Done when

  • Round-trip decrypt → encrypt is byte-identical
Port `nca.py` (`NCAHeader`, content type, distribution type). Spec: [§2.1 `nca`](https://git.benoitsafari.com/safari-slop-apps/safari-slopapps-nx-archiver/src/branch/main/docs/SPEC.md) ## Done when - Round-trip decrypt → encrypt is byte-identical
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Blocks
#8 XCI: parse and build
safari-slop-apps/safari-slopapps-nx-archiver
#20 NCA section decryption
safari-slop-apps/safari-slopapps-nx-archiver
Depends on
#3 Keys: load prod.keys / title.keys and derive keys
safari-slop-apps/safari-slopapps-nx-archiver
#4 Crypto: AES-XTS (Nintendo sectors) and AES-CTR
safari-slop-apps/safari-slopapps-nx-archiver
Reference
safari-slop-apps/safari-slopapps-nx-archiver#5
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