[SP 800-185]: https://doi.org/10.6028/NIST.SP.800-185 package sha3 import ( "crypto/internal/fips140" "crypto/internal/fips140/subtle" "errors" ) // spongeDirection indicates the direction bytes are flowing through the sponge. type spongeDirection int const ( // spongeAbsorbing indicates that the sponge is absorbing input. spongeAbsorbing spongeDirection = iota // spongeSqueezing indicates that the sponge is being squeezed. spongeSqueezing ) type Digest struct { a [1600 / 8]byte // main state of the...