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iden3 / go-iden3-crypto

Go implementation of some cryptographic primitives (that fit inside the SNARK field) and compatible with circomlib
Apache License 2.0
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Update Poseidon Hash function names, rm HashBytes #25

Closed arnaucube closed 4 years ago

arnaucube commented 4 years ago

Since Poseidon Hash is used because of compatibility in zkSNARK circuits, due circuit constraints number, the hash method of [T]*big.Int is the one directly compatible with the circuits, is the method which have the Hash name on it. The method that can take arbitrary length of []*big.Int putting them in chunks of [T]*big.Int and iterating, is called HashSlice. The HashBytes has been removed, as is a method that will not be used in zkSNARK circuits due high constraints number.

For zkSNARK circuits, should be used poseidon.Hash([poseidon.T]*big.Int).