- File: XChaCha20.php
- Full Path: /home/u137906794/domains/sherisadvisors.com/public_html/wp-includes/sodium_compat/src/Core/XChaCha20.php
- Date Modified: 03/19/2026 11:04 AM
- File size: 3.24 KB
- MIME-type: text/x-php
- Charset: utf-8
<?php
if (class_exists('ParagonIE_Sodium_Core_XChaCha20', false)) {
return;
}
/**
* Class ParagonIE_Sodium_Core_XChaCha20
*/
class ParagonIE_Sodium_Core_XChaCha20 extends ParagonIE_Sodium_Core_HChaCha20
{
/**
* @internal You should not use this directly from another application
*
* @param int $len
* @param string $nonce
* @param string $key
* @return string
* @throws SodiumException
* @throws TypeError
*/
public static function stream($len, $nonce, $key)
{
if (self::strlen($nonce) !== 24) {
throw new SodiumException('Nonce must be 24 bytes long');
}
return self::encryptBytes(
new ParagonIE_Sodium_Core_ChaCha20_Ctx(
self::hChaCha20(
self::substr($nonce, 0, 16),
$key
),
self::substr($nonce, 16, 8)
),
str_repeat("\x00", $len)
);
}
/**
* @internal You should not use this directly from another application
*
* @param int $len
* @param string $nonce
* @param string $key
* @return string
* @throws SodiumException
* @throws TypeError
*/
public static function ietfStream($len, $nonce, $key)
{
if (self::strlen($nonce) !== 24) {
throw new SodiumException('Nonce must be 24 bytes long');
}
return self::encryptBytes(
new ParagonIE_Sodium_Core_ChaCha20_IetfCtx(
self::hChaCha20(
self::substr($nonce, 0, 16),
$key
),
"\x00\x00\x00\x00" . self::substr($nonce, 16, 8)
),
str_repeat("\x00", $len)
);
}
/**
* @internal You should not use this directly from another application
*
* @param string $message
* @param string $nonce
* @param string $key
* @param string $ic
* @return string
* @throws SodiumException
* @throws TypeError
*/
public static function streamXorIc($message, $nonce, $key, $ic = '')
{
if (self::strlen($nonce) !== 24) {
throw new SodiumException('Nonce must be 24 bytes long');
}
return self::encryptBytes(
new ParagonIE_Sodium_Core_ChaCha20_Ctx(
self::hChaCha20(self::substr($nonce, 0, 16), $key),
self::substr($nonce, 16, 8),
$ic
),
$message
);
}
/**
* @internal You should not use this directly from another application
*
* @param string $message
* @param string $nonce
* @param string $key
* @param string $ic
* @return string
* @throws SodiumException
* @throws TypeError
*/
public static function ietfStreamXorIc($message, $nonce, $key, $ic = '')
{
if (self::strlen($nonce) !== 24) {
throw new SodiumException('Nonce must be 24 bytes long');
}
return self::encryptBytes(
new ParagonIE_Sodium_Core_ChaCha20_IetfCtx(
self::hChaCha20(self::substr($nonce, 0, 16), $key),
"\x00\x00\x00\x00" . self::substr($nonce, 16, 8),
$ic
),
$message
);
}
}