cipherFileDecrypt

Decrypt a file.

Syntax

Public Function cipherFileDecrypt ( _
    szFileOut As String, _
    szFileIn As String, _
    lpKey() As Byte, _
    lpIV() As Byte, _
    szAlgModePad As String, _
    Optional nOptions As Long = 0 _
) As Long

Parameters

szFileOut

Name of output file to be created or overwritten.

szFileIn

Name of input file.

lpKey

Key of exact length for block cipher algorithm.

lpIV

Initialization Vector (IV) of required length, or empty array for ECB mode or if IV is prefixed.

szAlgModePad

String with block cipher algorithm, mode and padding, e.g. "aes128/cbc/pkcs5"

Alg:  aes128|aes192|aes256|tdea|3des|desede3
Mode: ecb|cbc|ofb|cfb|ctr|gcm
Pad:  pkcs5|nopad|oneandzeroes|ansix923|w3c

nOptions

Add PKI_IV_PREFIX to expect the IV before the ciphertext in the input.

Return Value

Remarks