CipherStreamFile Method

public static int File(
	string fileOut,
	string fileIn,
	byte[] key,
	byte[] iv,
	int counter,
	CipherStreamAlgorithm streamAlg
)

Public Shared Function File ( 
	fileOut As String,
	fileIn As String,
	key As Byte(),
	iv As Byte(),
	counter As Integer,
	streamAlg As CipherStreamAlgorithm
) As Integer

Parameters

fileOut  String

Name of output file to be created or overwritten

fileIn  String

Name of input file

key  Byte

Key

iv  Byte

Initialization Vector (IV, nonce) or null for Arcfour

counter  Int32

Counter value for ChaCha20 only, otherwise ignored. Use 0 for default.

streamAlg  CipherStreamAlgorithm

Stream cipher algorithm

Return Value

• Arcfour: any length key; specify null for IV.
• Salsa20: key must be exactly 16 or 32 bytes and IV exactly 8 bytes long.
• ChaCha20: key must be exactly 16 or 32 bytes and IV exactly 8, 12, or 16 bytes long. Counter is ignored if IV is 16 bytes.

Reference