cipherInit

Initializes the CIPHER context with the key, algorithm and mode ready for repeated incremental operations.

Syntax

Public Function cipherInit ( _
    fEncrypt As Integer, _
    szAlgAndMode As String, _
    lpKey() As Byte, _
    lpIV() As Byte, _
    Optional nOptions As Long = 0 _
) As Long

Parameters

fEncrypt

Direction flag: set as ENCRYPT (True) to encrypt or DECRYPT (False) to decrypt.

szAlgAndMode

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

lpKey

Key of exact length for block cipher algorithm.

lpIV

Initialization Vector (IV) of exactly the block size or empty array for ECB mode.

nOptions

Option flags, set as zero for defaults.

Return Value