ParagonIE_Sodium_Core32_ChaCha20_IetfCtx::__construct() public WP 1.0

ParagonIE_Sodium_Core_ChaCha20_IetfCtx constructor.

{} Это метод класса: ParagonIE_Sodium_Core32_ChaCha20_IetfCtx{}

Хуков нет.

Возвращает

Null. Ничего.

Использование

$ParagonIE_Sodium_Core32_ChaCha20_IetfCtx = new ParagonIE_Sodium_Core32_ChaCha20_IetfCtx();
$ParagonIE_Sodium_Core32_ChaCha20_IetfCtx->__construct( $key, $iv, $counter );

$key(строка)

ChaCha20 key.

$iv(строка)

Initialization Vector (a.k.a. nonce).

$counter(строка)

The initial counter value.
По умолчанию: 4 0x00 bytes

Код ParagonIE_Sodium_Core32_ChaCha20_IetfCtx::__construct() ParagonIE Sodium Core32 ChaCha20 IetfCtx:: construct ^{WP 5.6.2}

<?php
public function __construct($key = '', $iv = '', $counter = '')
{
    if (self::strlen($iv) !== 12) {
        throw new InvalidArgumentException('ChaCha20 expects a 96-bit nonce in IETF mode.');
    }
    parent::__construct($key, self::substr($iv, 0, 8), $counter);

    if (!empty($counter)) {
        $this->container[12] = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($counter, 0, 4));
    }
    $this->container[13] = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($iv, 0, 4));
    $this->container[14] = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($iv, 4, 4));
    $this->container[15] = ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($iv, 8, 4));
}