Lifetimes of cryptographic hash functions

Re:Lifetimes of cryptographic hash functions by jeffdavis on Saturday February 25, 2017 @01:18PM (#13732917)

Maybe a dumb question: if sha2 and sha3 are so different, wouldn't it make sense to just use both and XOR the results?

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Re:Lifetimes of cryptographic hash functions by hannob on Saturday February 25, 2017 @02:00PM (#13733136)

I wouldn't do any such thing without thorough analysis. It very well might have unexpected consequences.

You can concatenate hash functions, so you get at least the best security from both. But the question is: Why would you want to do any such thing? Just choose one of them. Both are safe.

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Re:Lifetimes of cryptographic hash functions by kobeya on Sunday February 26, 2017 @12:58AM (#13735911)

XOR? No. That very likely breaks it entirely. But you could chain the algorithms, which is what Bitcoin does for its standard payment addresses.

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