Necessary for decrypting NCCH and CIA files for newer 3DS games.

using tools like GodMode9 or FBI . How to Obtain or Generate a Full SeedDB

许多2015年之后发布的游戏（特别是eShop下载版）都使用了种子加密（Seed Crypto）。如果你通过CIA安装器（如FBI）安装了这类游戏，但没有提供对应的种子密钥，那么启动时就会卡在3DS Logo界面，无法进入游戏。

SeedDB, in the context of 3DS homebrew, seems to be related to collecting and organizing data (like game save "seeds") that can be used to facilitate various homebrew applications. These might include tools for:

A: seeddb.bin is a database of seeds. seedinfo.bin is for legacy decrypting tools like rxTools to generate KeyYs at once.

SEEDconv - seeddb.bin generator for the 3DS console - GitHub

Leo paid $600, nearly his entire rent.

Place it in the AppData/Roaming/Citra/sysdata folder so the emulator can decrypt your dumped games.

3DS game content (NCCH/NCSD) uses AES-128-CTR or AES-128-CBC encryption with keys derived from a console-unique movable.sed and title-specific data. Some titles require an additional from seeddbbin to generate the correct decryption key.