law chacha20_block.valid

bend-collections-laws-crypto@1.0.0.0 · proofs/crypto/chacha/laws.bend:53

import Base
import bend-collections-laws-crypto@1.0.0.0/src/crypto/chacha/chacha20.bend as I
import bend-collections-laws-crypto@1.0.0.0/spec/crypto/chacha.bend as R

53law chacha20_block.valid:
54  for +key: List<&2, U32>
55  for +counter: U32
56  for +nonce: List<&2, U32>
57  for +hk: {List.length(&2, U32, key) == 32n : Nat}
58  for +hn: {List.length(&2, U32, nonce) == 12n : Nat}
59  {I.chacha20_block(key, counter, nonce) == Some{R.block(key, counter, nonce)} : Maybe<&2, List<&2, U32>>}