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I have no advanced knowledge in cryptography.

Is it possible to recover the AES-256 key with the decrypted and encrypted message?

schroeder
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Perfect28
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    I think you're talking about either a chosen plaintext or known plaintext attack. See [Security of AES against known plaintext attack if no IV is used?](/q/138229) and [Is symmetric encryption vulnerable to known plaintext attack?](/q/16165) – Fire Quacker Jan 21 '22 at 15:04
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    See https://crypto.stackexchange.com/questions/1512/why-is-aes-resistant-to-known-plaintext-attacks – mti2935 Jan 21 '22 at 15:07
  • Another link: [Can I recover a lost AES key?](/q/199879) – Fire Quacker Jan 21 '22 at 15:09

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