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Korean

그러한 이유로 인해 iv는 암호화, 복호화 과정에서 공유되어야 한다고 알고 있습니다.
대신 iv를 재사용하지 않는 것이 중요합니다.
iv는 같은 평문의 암호화 결과가 달라지도록 하기 위해 사용되기 때문입니다.
만약 iv가 사용된다면 같은 평문의 암호화 결과가 같아지므로 위험합니다.

English

For that reason, IV must be shared during both encrypting and decrypting ends.
However, it is important not to reuse IV.
IV is used to differentiate the encrypted result even if the plaintext is the same.
If IV is used, the encryption result of the same plaintext will be the same, which can be used to infer the plaintext.

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@jwoo0122
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@bongjunj
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