PROOF.ccmp.xt_short: def of bend-osdev-cipher-modes@0.1.0.0
Import: import bend-osdev-cipher-modes@0.1.0.0/PROOF.bend as PROOF
Lines 1797-1800 of bend-osdev-cipher-modes@0.1.0.0/PROOF.bend: https://jend.leeeet.dev/read.txt?path=bend-osdev-cipher-modes@0.1.0.0/PROOF.bend&start_line=1797&end_line=1800

import Base
import bend-osdev-bytes@0.1.0.0/bytes.bend as B
import bend-osdev-cipher-modes@0.1.0.0/cipher_modes.bend as M
import bend-osdev-cipher-modes@0.1.0.0/ccm.bend as CC

# the CTR tail is as short as the plaintext tail
def ccmp.xt_short(~K: Data, ~enc: K -> M.CmBlock -> M.CmBlock, +k: K, +a0: M.CmBlock, +ys: List<&2, U32>) -> {Nat.is_lt(B.len(M.cm.xor_bytes(M.cm.split.tail(M.cm.split(B.mask(ys))), M.cm.bytes_of(enc(k, CC.ccm.ai(a0, U32.add(1, U32.from_nat(List.length(&2, M.CmBlock, M.cm.split.blocks(M.cm.split(B.mask(ys))))))))))), 16n) == True{} : Bool}:
  %Equal.sym(Nat, B.len(M.cm.xor_bytes(M.cm.split.tail(M.cm.split(B.mask(ys))), M.cm.bytes_of(enc(k, CC.ccm.ai(a0, U32.add(1, U32.from_nat(List.length(&2, M.CmBlock, M.cm.split.blocks(M.cm.split(B.mask(ys))))))))))), B.len(M.cm.split.tail(M.cm.split(B.mask(ys)))), li.len_xor(M.cm.split.tail(M.cm.split(B.mask(ys))), M.cm.bytes_of(enc(k, CC.ccm.ai(a0, U32.add(1, U32.from_nat(List.length(&2, M.CmBlock, M.cm.split.blocks(M.cm.split(B.mask(ys))))))))))(na.lt_le(B.len(M.cm.split.tail(M.cm.split(B.mask(ys)))), 16n)(sp.tail_short(ys)))) : {Nat.is_lt(_, 16n) == True{} : Bool}
  sp.tail_short(ys)

Uses (21):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Equal.sym
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List.length
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat.is_lt
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.add
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.from_nat
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-bytes@0.1.1.0/bytes.bend&name=len
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-bytes@0.1.1.0/bytes.bend&name=mask
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-cipher-modes@0.1.0.0/PROOF.bend&name=li.len_xor
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-cipher-modes@0.1.0.0/PROOF.bend&name=na.lt_le
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-cipher-modes@0.1.0.0/PROOF.bend&name=sp.tail_short
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-cipher-modes@0.1.0.0/ccm.bend&name=ccm.ai
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-cipher-modes@0.1.0.0/cipher_modes.bend&name=CmBlock
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-cipher-modes@0.1.0.0/cipher_modes.bend&name=cm.bytes_of
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-cipher-modes@0.1.0.0/cipher_modes.bend&name=cm.split
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-cipher-modes@0.1.0.0/cipher_modes.bend&name=cm.split.blocks
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-cipher-modes@0.1.0.0/cipher_modes.bend&name=cm.split.tail
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-cipher-modes@0.1.0.0/cipher_modes.bend&name=cm.xor_bytes