Method Nettle.CHACHA()->State()->set_iv()

class Nettle.CHACHA

class Nettle.CHACHA.State

Method set_iv

object set_iv(string(8bit) iv)

Description

Set the initialization vector (aka nonce) and reset the block counter to zero.

Parameter iv

An 8-byte long string which is only to be used once for every key.

Note

This function MUST be called in addition to set_encrypt_key() or set_decrypt_key().

Note

The same iv should NEVER be reused with the same key!