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I'm deriving the session keys using Keccak/SHA3 by absorbing three(3) things: (1) the salt, (2) the common secret and (3) bits from a common key file. Normally, all three are concatenated and then padded, and the whole thing is absorbed. Would it still be secure if I pad each on
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I understand that the Ed25519 variety of EdDSA uses SHA-512 for the random oracle H. Would replacing H with Keccak be provably secure? I'm in a situation where the systems are constrained in ROM and RAM. Using Keccak in Ed25519 saves a lot because Keccak is already used for the