Function poseidon_block_cipher 

pub fn poseidon_block_cipher<F: Field, SC: SpongeConstants, const FULL_ROUNDS: usize>(
    params: &ArithmeticSpongeParams<F, FULL_ROUNDS>,
    state: &mut [F],
)

Run a single instance of the Poseidon permutation.

Arguments

• params - The Poseidon parameters containing the MDS matrix and round constants.
• state - The state array to permute in place. Must have length SpongeConstants::SPONGE_WIDTH (e.g., 3 for PlonkSpongeConstantsKimchi).

Security

NOTE: Because this function can only be called with fixed-length input states of length SpongeConstants::SPONGE_WIDTH, the function will not incur in trailing-zeros padding type of collisions.