Are you sure AES 256-bit hasn't been broken?
Next time you insult someone, better use your cognition powers to avoid looking like that which you call others
By GP, u/blitzar's comment, my cognition tells me that his comment meant anyone can break AES 256-bit encryption, including Apple, but in this context, he could have meant everyone else
One for password key column, one for value column and one for the password file.
Authentication: "Prove you are you" (hash functions)
Secure Storage: "Keep this secret but let me get it back later" (encryption)
Identification: "Track who/what this is" (UUIDs/tokens)
Password managers—all password managers—require stored passwords to be encrypted such that they can be decrypted. Otherwise they would have no possibly way to retrieve the stored secret for the sake of submitting it to the verifying party.
Best practice for verifiers is to use a one-way memory-hard password hash.
Keychain is a password manager.
This is what keychain does. You retrieve the passwords later.
So, no. It is not a one-way hash function as you stated.
Use Argon2 to hash a password before storing it in the password manager. Now the user visits that website and wants to log in. What is it that the password manager pastes into the login form?
Answer: the plaintext password. But how do you get that out of the hashed value you stored earlier? You don’t. Ergo, password managers cannot use hashing functions to store their contents.