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Also the keys can be any random secret... Meaning you could use PBKDF2 of your favorite passphrase as your private key, then keep it in organic memory. Person
by jopsen 9y ago
Also the keys can be any random secret...
Meaning you could use PBKDF2 of your favorite passphrase as your private key, then keep it in organic memory.
Personally, I would love to see a strategy for generating a private from an analog picture.. But I don't see a good way to do it reliably.. Maybe one could generate it from error correction bits in a QR code.
- zokier 9y ago> Personally, I would love to see a strategy for generating a private from an analog picture.. But I don't see a good way to do it reliably.. Maybe one could generate it from error correction bits in a QR code Not clear exactly what you meant, but but deriving a key from a photograph shouldn't be that difficult. A good perceptual hash should work, maybe some preprocessing is needed (straighten/crop/normalize/resize). It helps that the amount of data in an image is absolutely massive compared to typical key size.
- ecesena 9y agoI'm not sure you can use a KDF because it requires a salt. I'm working on a blog post on deterministic passwords (i.e. not keys for ECC), but I guess that if you really want determinism you can do something similar, maybe sha3.512 and "cut" a 256-bit ECC key. This is the post, still a draft. Hopefully I'll publish it next week, but if you have any comments, they are more than welcome! https://medium.com/@0x0ece/how-i-manage-my-passwords-technical-version-8549dc1bde1e https://medium.com/@0x0ece/how-i-manage-my-passwords-technic...