Add key commitment to prevent invisible salamanders attack #141
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Implements a key binding strategy that ensures a ciphertext can only be decrypted with the exact key used for encryption, preventing the invisible salamanders attack. This implementation: 1. Derives a committed key from the original key and nonce 2. Uses the committed key for encryption/decryption operations 3. Ensures an attacker cannot create different keys that decrypt to different messages References: https://soatok.blog/2024/09/10/invisible-salamanders-are-not-what-you-think/ and the paper 'Committing Authenticated Encryption: Generic Transforms with Hash Functions'
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Implements the AEaH (AE-and-Hash) transform from the 'Committing Authenticated Encryption: Generic Transforms with Hash Functions' paper to prevent the invisible salamanders attack by ensuring a ciphertext can only be decrypted to a single plaintext.
Changes: