def segment_len

bend-collections-laws-crypto@1.0.0.0 · proofs/crypto/argon2/fill.bend:277

import Base
import bend-collections-laws-crypto@1.0.0.0/spec/lib/common.bend as SC
import bend-collections-laws-crypto@1.0.0.0/src/crypto/argon2/types.bend as A
import bend-collections-laws-crypto@1.0.0.0/spec/crypto/argon2/blamka.bend as SG
import bend-collections-laws-crypto@1.0.0.0/spec/crypto/argon2/argon2.bend as SA

277def segment_len(+r: Nat, +s: Nat, +l: Nat, +p: Nat, +q: Nat, +sl: Nat, +mm: Nat, +t: Nat, +mem: List<&2, A.Block>) -> {SC.length(A.Block, SA.segment(r, s, l, p, q, sl, mm, t, mem)) == SC.length(A.Block, mem) : Nat}:
278  +r0 = Nat.is_eq(r, 0n)
279  +st = SA.start_index(Bool.and(r0, Nat.is_eq(s, 0n)))
280  seg_len(Nat.sub(sl, st), st, True{}, SG.zero(), mem, r, l, s, p, q, sl, mm, t, Bool.and(r0, Nat.is_lt(s, 2n)))