feature request: deterministic key generation

[sneak]

I'd like to generate a pseudoinfinite list of deterministic private age keys, ideally from a leaf of a BIP32-style seed phrase.

This is a feature request for age-keygen to support either:

• the use of a bip32 seed phrase and a derivation path to deterministically generate a private key

or

• the use of an "entropy file" as input to age-keygen instead of platform-specific random sources for generic deterministic key generation

[keisentraut]

I'd like to generate a pseudoinfinite list of deterministic private age keys, ideally from a leaf of a BIP32-style seed phrase.

I had the need to generate a deterministic key from a passphrase, too. So I wrote a little utility a week ago and just updated it for your usecase of generating more than one secret key. I did not bother implementing BIP32 derivation paths, but you can use any passphrase and generate up to 2^64 secret keys from it.

Please take a look at https://github.com/keisentraut/age-keygen-deterministic but use at your own risk.