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I can see based upon your question that you're not already a crypto-expert. Given that, I think the single most useful answer I can give you is this: Multiple encryption addresses a problem that mostly doesn't exist. Modern ciphers rarely get broken -- at least, not in the Swordfish sense. You're far more likely to get hit by malware or an ...


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Block ciphers are already built of multiple components: AES = fixed 8-bit sbox, MDS matrix multiplication, 8-bit rotations Twofish = key dependent sboxes, MDS matrix, 1 and 8-bit rotations, PHT Chaining ciphers adds more components, more rounds, more complexity Depending on chaining implementation, a different IV is not required for each cipher. For ...



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