Encrypting a file with RSA in Python without storing any password?

There seems to be some confusion. You mention that you don't want to store the 'password', but you're working with RSA and not a symmetric algorithm. The term 'password' strongly implies a shared secret as used in symmetric encryption, and it appears that you're trying really hard to fit RSA into the mould you've created.

There seems to be some confusion. You mention that you don't want to store the 'password', but you're working with RSA and not a symmetric algorithm. The term 'password' strongly implies a shared secret as used in symmetric encryption, and it appears that you're trying really hard to fit RSA into the mould you've created.

The issue I see is that this functionality may not fit into your planned use very well. Your plan seems focused on symmetric ciphers. Further, using asymmetric keys this way may be a problem.

I think asymmetric encryption is used to encrypt nonces for a reason; it may not be robust to attacks that can be waged against a scheme like the one you propose. Asymmetric keys are often used as follows: Generate a purely random 32-'character' key and call it "nonce". Encrypt the message with the "nonce" and call it ciphertext.

Encrypt the "nonce" with your asymmetric key (presumably the public key, but you should specify). The result consists of the ciphertext and the asymmetrically encrypted "nonce". Decrypting requires only the paired opposite of the asymmetric key used to encrypt.

If you're hardcore, you could encrypt (using AES + a password or similar) the public or private key that can be used to decrypt the nonce and send it along for a ride too. Sadly that isn't really increasing security over AES+password, and you are increasing the bloat in your message by a lot.

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