ChaCha.start

Initialize the ChaCha20 stream cipher.

struct ChaCha(uint rounds)

@safe nothrow @nogc

void

start

(

in ubyte[] key

in ubyte[] iv

)

in { assert (key.length == 32, "ChaCha requires a 32 byte key."); assert (iv.length == 12, "ChaCha requires a 12 byte nonce."); }

if (

rounds % 2 == 0

)

Parameters

forEncryption: Type: bool
Not used, because encryption and decryptioin are the same.
key: Type: ubyte[]
A secret key of 32 bytes length (256 bit).
iv: Type: ubyte[]
A nonce of 12 bytes length (96 bit).
initial_counter: Type: uint
The initial value of the counter. The default is 1. (Set this to 2 to skip the first block.)