RFC: trits-t1b1 encoding - #14
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| # Motivation | ||
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| This encoding of sequences of balanced trits is necessary for the `Curl` hash function and therefore still necessary to allow for the Bee framework to interoperate with the current IOTA mainnet. |
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Curl can be implemented using a more efficient encoding (64 trits per two 64-bit words). This way memory footprint can be reduced by a factor of 4. When pointer arithmetic is used to access words of Curl state (instead of LUT) then the memory footprint reduces additionally be a factor of 4/3. All in all, optimizing of Curl is worth investigating.
So, it's not a very convincing argument that "balanced trits is necessary for the Curl". Maybe we should talk about Curl-compliant encoding?
t1b1 however is the simplest encoding that could be very useful for tests, to compare invariants when other encodings are used to perform the same trits transformation.
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Not if we actually do a difference between Curl and PCurl. Per se Curl is the one operating on T1B1 while PCurl accepts different encodings. It is briefly mentioned in the base RFC here https://github.com/iotaledger/bee-rfcs/pull/10/files#diff-b075c83057cb59013a66d6ee87aa3986R31.
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yea, I know of BCT-Curl. There is already a Rust port of it btw. But can we use it as a full replacement for Standard-Curl? Or putting this question differently: Is there really no other usecase for T1B1 other than tests, debugging, ....
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I think for single hashing Curl is faster than PCurl because of all the overhead it has. Also, almost all prototyping is done with T1B1.
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