func (d *Digest) Clone() *Digest { ret := *d return &ret } // permute applies the KeccakF-1600 permutation. func (d *Digest) permute() { keccakF1600(&d.a) d.n = 0 } // padAndPermute appends the domain separation bits in dsbyte, applies // the multi-bitrate 10..1 padding rule, and permutes the state. func (d *Digest) padAndPermute() { // Pad with this instance's domain-separator bits. We know that there's // at least one byte of space in the sponge because, if it were full, // permute would have been...