Because once the 1024-bit RSA is cracked, it doesn't matter how strong the symmetric algorithm is as you'll have its key. Analogy: a virtually uncrackable safe (AES-256) whose combination is written on a piece of paper that's stuck in a box protected by a weak padlock (1024-bit RSA).
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Because once the 1024-bit RSA is cracked, it doesn't matter how strong the symmetric algorithm is as you'll have its key. Analogy: a virtually uncrackable safe (AES-256) whose combination is written on a piece of paper that's stuck in a box protected by a weak padlock (1024-bit RSA).