Adding the hash Multimixer-128 #591
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AFAIK this hash function does not have any real world adoption and it has not received any independent cryptanalysis. The paper has only one citation from the same group. So I am not sure if we want to include this function at the current time.
@tarcieri WDYT?
| let mut k = [0u32; 4]; | ||
| for i in 0..4 { | ||
| h[i] = u32::from_ne_bytes([ | ||
| self.key_blocks[self.block_index][i * 4], |
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What happens with messages bigger than key size? IIUC this code will panic.
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Yes, correct, actually the message and key should be equal in size. I first created the algorithm with a key, but then also implemented a PRNG with a seed. I really wanted to bench the code, and for this I would need a really big key. Ideally I would maybe create two different hash-classes, Multimixer-128 and Multimixer-128-PRNG. I think this would solve the other comments as well.
| HashMarker, OutputSizeUser, | ||
| }; | ||
| use rand_chacha::rand_core::{RngCore, SeedableRng}; | ||
| use rand_chacha::ChaCha8Rng; |
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You should use the chacha20 crate instead.
| key_blocks: Vec<Block<Self>>, | ||
| block_sums: [u64; 8usize], | ||
| block_index: usize, | ||
| rng: Option<ChaCha8Rng>, |
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This looks... suspicious. If you want to make code generic over key blocks generator, I think it's better to make it generic over closure.
| } | ||
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| //Uses key instead of RNG, needs to be same size as message. | ||
| fn new_from_slice(key: &[u8]) -> Result<Self, InvalidLength> { |
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In general, T::new(&key) and T::new_from_slice(&key).unwrap() should produce the same result for the same key.
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Thank you for the review! Yes, it should not be used by the public, but as I understood it, maybe as a replacement for the NU hash in UMAC. I really appreciate the comments, but if it not going to be merged, I think I'll give implementing UMAC a try 🙂. RustCrypto/MACs#1 |
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Joan Daemen is listed as one of the authors on the paper, so I wouldn't completely discount it, but I'm not seeing a whole lot in the way of peer review on it. It seems very new. |
Did this to exercise my Rust. Any interest having it in the main repo?