cipherDecryptBytes

Decrypts data in a byte array using the specified block cipher algorithm, mode and padding. The key and initialization vector are passed as byte arrays.

Syntax

Public Function cipherDecryptBytes ( _
    lpInput() As Byte, _
    lpKey() As Byte, _
    lpIV() As Byte, _
    szAlgModePad As String, _
    Optional nOptions As Long = 0 _
) As Byte()

Parameters

lpInput

Input data to be decrypted.

lpKey

Key of exact length for block cipher algorithm.

lpIV

Initialization Vector (IV) of exactly the block size (if not provided in input) or empty array for ECB mode.

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
Pad:  pkcs5|nopad|oneandzeroes|ansix923|w3c

nOptions

Add API_IV_PREFIX to expect the IV to be prepended at the start of the input (ignored for ECB mode).

Return Value

Remarks