I have to implement HD Wallet and issue a deposit address to the user.

Is there a best practice for storing master private keys and mnemonic?

I would appreciate it if you could also tell me how to save the master private key and mnemonic, and how to save the user's private key (child key).

The method I am considering is to use AWS' Secret Manage Store.

Please let me know if there is another better alternative.

I know there are several similar questions, but I didn't have a satisfactory answer because I'm building the form of Cefi, not Dapp.


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