def pd.dpx

bend-osdev-cbc@0.1.0.0 · PROOF_padded.bend:101

import Base
import bend-osdev-bytes@0.1.1.0/bytes.bend as B
import bend-osdev-mode-core@0.1.0.0/mode_core.bend as M
import bend-osdev-pkcs7@0.1.0.0/pkcs7.bend as P
import bend-osdev-cbc@0.1.0.0/cbc.bend as C

101# decrypt_padded with its first check as an argument
102def pd.dpx(~K: Data, ~dec: K -> M.CmBlock -> M.CmBlock, +k: K, iv: B.Octets, +c: B.Octets, ok: Bool) -> Result<&2, &2, M.CmError, B.Octets>:
103  do Result<&2, &2, M.CmError, B.Octets>:
104    M.cm.check(ok, M.CmTooShort{B.Octets.len(c)})
105    padded : B.Octets <- C.Cbc.decrypt(~K, ~dec, k, iv, c)
106    P.Pkcs7.unpad(16n, padded)